libstdc++-v3/ChangeLog

   1 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/bits/alloc_traits.h
   4         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
   5         (allocator_traits<allocator<T>>::construct): Perform placement new
   6         directly for C++20, instead of calling allocator<T>::construct.
   7         (allocator_traits<allocator<T>>::destroy): Call destructor directly
   8         for C++20, instead of calling allocator<T>::destroy.
   9         (allocator_traits<allocator<T>>::max_size): Return value directly
  10         for C++20, instead of calling std::allocator<T>::max_size().
  11         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
  12         define for C++17 and up.
  13         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
  14         for C++17 and up, instead of tag dispatching.
  15         * include/bits/allocator.h (allocator<void>): Remove for C++20.
  16         (allocator::pointer, allocator::const_pointer, allocator::reference)
  17         (allocator::const_reference, allocator::rebind): Remove for C++20.
  18         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
  19         rebind allocator.
  20         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
  21         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
  22         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
  23         (malloc_allocator::pointer, malloc_allocator::const_pointer)
  24         (malloc_allocator::reference, malloc_allocator::const_reference)
  25         (malloc_allocator::rebind, malloc_allocator::max_size)
  26         (malloc_allocator::construct, malloc_allocator::destroy): Do not
  27         define for C++20.
  28         (malloc_allocator::_M_max_size): Define new function.
  29         * include/ext/new_allocator.h (new_allocator::~new_allocator)
  30         (new_allocator::pointer, new_allocator::const_pointer)
  31         (new_allocator::reference, new_allocator::const_reference)
  32         (new_allocator::rebind, new_allocator::max_size)
  33         (new_allocator::construct, new_allocator::destroy): Do not
  34         define for C++20.
  35         (new_allocator::_M_max_size): Define new function.
  36         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
  37         __alloc_traits to rebind allocator.
  38         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
  39         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
  40         to construct character.
  41         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
  42         allocator.
  43         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
  44         Use __alloc_traits.
  45         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
  46         members of std::allocator, use __alloc_traits members instead.
  47         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
  48         * include/ext/vstring_util.h (__vstring_utility): Likewise.
  49         * include/std/memory: Include <bits/alloc_traits.h>.
  50         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
  51         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
  52         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
  53         for pointer, const_pointer, reference, const_reference or rebind in
  54         C++20.
  55         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
  56         * testsuite/23_containers/deque/capacity/29134.cc: Use
  57         __gnu_test::max_size.
  58         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
  59         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
  60         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
  61         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
  62         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
  63         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
  64         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
  65         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
  66         test for C++20.
  67         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
  68         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
  69         * testsuite/util/replacement_memory_operators.h: Do not assume
  70         Alloc::pointer exists.
  71         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
  72         helper to call max_size for any allocator.
  73
  74 2019-10-22  Andreas Schwab  <schwab@suse.de>
  75
  76         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
  77
  78 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
  79
  80         PR libstdc++/92143
  81         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
  82         to at least sizeof(void*).
  83
  84         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
  85         logic from std::less::operator() to remove the dependency on it.
  86
  87 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
  88
  89         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
  90
  91         * include/Makefile.am: Add new header.
  92         * include/Makefile.in: Regenerate.
  93         * include/bits/range_cmp.h: New header for C++20 function objects.
  94         * include/std/functional: Include new header.
  95         * testsuite/20_util/function_objects/identity/1.cc: New test.
  96         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
  97         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
  98         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
  99         test.
 100         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
 101         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
 102         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
 103         test.
 104
 105         PR libstdc++/92124
 106         * include/bits/forward_list.h
 107         (_M_move_assign(forward_list&&, false_type)): Do not use
 108         __make_move_if_noexcept, instead move unconditionally.
 109         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
 110         Likewise.
 111         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
 112         Likewise.
 113         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
 114         Likewise.
 115         * testsuite/23_containers/vector/92124.cc: New test.
 116
 117 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
 118
 119         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
 120         one of __is_same_as or __is_same when available.
 121         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
 122         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
 123         Use new macro instead of __is_same_as.
 124         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
 125         specialization.
 126         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
 127         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
 128
 129 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
 130
 131         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
 132         entry with <unknown constness>. Replace state_names <unknown> entry with
 133         <unknown state>.
 134
 135 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
 136
 137         * include/Makefile.am: Add new header.
 138         * include/Makefile.in: Regenerate.
 139         * include/precompiled/stdc++.h: Include <concepts>.
 140         * include/std/concepts: New header for C++20.
 141         * include/std/version (__cpp_lib_concepts): Define.
 142         * scripts/create_testsuite_files: Look for test files in new std
 143         directory.
 144         * testsuite/libstdc++-dg/conformance.exp: Likewise.
 145         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
 146         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
 147         test.
 148         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
 149         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
 150         test.
 151         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 152         floating_point.cc: New test.
 153         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 154         New test.
 155         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 156         signed_integral.cc: New test.
 157         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 158         unsigned_integral.cc: New test.
 159         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
 160         test.
 161         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
 162         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
 163         test.
 164         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
 165         New test.
 166         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
 167         New test.
 168         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
 169         New test.
 170         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 171         1.cc: New test.
 172         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 173         New test.
 174         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 175         New test.
 176         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 177         New test.
 178         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 179         New test.
 180         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 181         New test.
 182         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 183         New test.
 184         * testsuite/std/concepts/concepts.lang/concept.swappable/
 185         swappable_with.cc: New test.
 186         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 187         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 188         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 189         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 190
 191         * include/std/type_traits (is_same): Replace partial specialization
 192         by using __is_same_as built-in in primary template.
 193         (is_same_v): Use __is_same_as built-in instead of instantiating the
 194         is_same trait.
 195
 196         PR libstdc++/92059
 197         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 198         special member functions as defaulted. Add noexcept to most members.
 199         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 200         Mask off unwanted bits in the __val parameter. Avoid undefined left
 201         shifts.
 202         (__dynamic_bitset_base::_M_assign): Remove.
 203         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 204         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 205         block_type has lower rank than int.
 206         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 207         in return types and parameter types.
 208         (dynamic_bitset::_M_Nb): Add default member initializer.
 209         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 210         defaulted.
 211         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 212         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 213         defaulted.
 214         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 215         Define without using swap, to propagate allocator correctly.
 216         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 217         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 218         casts to avoid unwanted integer promotions.
 219         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 220         add default template arguments and default argument to simplify usage.
 221         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 222         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 223         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 224         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 225         Adjust template parameters to match declaration.
 226         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 227         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 228         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 229         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 230         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 231
 232         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 233         warnings.
 234
 235 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 236
 237         PR libstdc++/91057
 238         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 239         (find_ldbl_sync_facet): Fix parameter type and missing return.
 240
 241 2019-10-09  Marek Polacek  <polacek@redhat.com>
 242
 243         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 244         PR c++/69531 - DR 1307: Differently bounded array parameters.
 245         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 246         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 247         post-P0388R4 behavior.
 248
 249 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 250
 251         PR libstdc++/91057
 252         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 253         compare-exchange or double-checked lock to ensure only one thread sets
 254         the _M_index variable.
 255         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 256         facets that share another facet's ID.
 257         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 258
 259         PR libstdc++/78552
 260         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 261         locale object for every call.
 262         (locale::_S_initialize_once()): Construct C locale here.
 263
 264 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 267         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 268         * doc/Makefile.in: Regenerate.
 269         * doc/xml/manual/documentation_hacking.xml: Document new target.
 270         * doc/html/*: Regenerate.
 271
 272         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 273         * doc/html/*: Regenerate.
 274
 275 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 276
 277         * include/bits/stl_algo.h
 278         (__copy_n_a(_IIte, _Size, _OIte)): New.
 279         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 280         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 281         latter.
 282         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 283         std::__copy_n_a friend.
 284         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 285         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 286         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 287         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 288
 289         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 290         for C++11.
 291         (_RequireInputIte): Likewise and use __enable_if_t.
 292         * include/std/numeric
 293         (__is_random_access_iter): Use __iterator_category_t.
 294
 295         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 296         debug checks.
 297         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 298         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 299
 300 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 301
 302         * include/debug/forward_list
 303         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 304         distance when not empty.
 305         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 306         Likewise.
 307         * include/debug/helper_functions.h (__dp_sign_max_size): New
 308         _Distance_precision enum entry.
 309         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 310         __false_type)): Adapt.
 311         * include/debug/safe_iterator.tcc
 312         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 313         distance computation.
 314
 315 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 316
 317         PR libstdc++/81091
 318         PR libstdc++/91947
 319         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 320         * config.h.in: Regenerate:
 321         * configure: Regenerate:
 322         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 323         target to generate config header for filesystem library.
 324         (${host_builddir}/c++config.h): Rename macros for large file support.
 325         * include/Makefile.in: Regenerate.
 326         * src/c++17/fs_dir.cc: Include new config header.
 327         * src/c++17/fs_ops.cc: Likewise.
 328         (filesystem::file_size): Use uintmax_t for size.
 329         * src/filesystem/dir.cc: Include new config header.
 330         * src/filesystem/ops.cc: Likewise.
 331         (experimental::filesystem::file_size): Use uintmax_t for size.
 332
 333         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 334         std::tr1::unordered_map.
 335         * testsuite/util/testsuite_allocator.h: Likewise.
 336
 337         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 338
 339         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 340         __gnu_cxx::__alloc_traits for allocator construct function.
 341         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 342
 343         * include/precompiled/stdc++.h: Include <span> for C++20.
 344         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 345
 346 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 347
 348         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 349
 350 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 351
 352         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 353
 354         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 355         recent standards.
 356         * doc/html/*: Regenerate.
 357
 358 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 359
 360         * include/experimental/algorithm (experimental::sample): Qualify call
 361         to __sample correctly.
 362         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 363         for algorithms that don't have parallel implementations.
 364
 365         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 366         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 367         constant evaluated.
 368         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 369         Add _GLIBCXX20_CONSTEXPR.
 370
 371         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 372         parallel mode.
 373         * testsuite/20_util/hash/84998.cc: Likewise.
 374         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 375         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 376         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 377         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 378         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 379         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 380         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 381         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 382         Likewise.
 383         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 384         Likewise.
 385         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 386         Likewise.
 387         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 388         Likewise.
 389         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 390         Likewise.
 391         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 392         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 393         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 394         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 395         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 396         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 397         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 398
 399         * include/parallel/algo.h: Replace non-reserved names.
 400         * include/parallel/multiway_merge.h: Likewise.
 401         * include/parallel/multiway_mergesort.h: Likewise.
 402         * include/parallel/numericfwd.h: Likewise.
 403         * testsuite/17_intro/names.cc: Add RAI to test macros.
 404
 405 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 406
 407         * include/debug/array: Add C++20 constexpr to comparison operators.
 408         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 409         dg-error line numbers.
 410         * testsuite/23_containers/array/tuple_interface/
 411         tuple_element_debug_neg.cc: Likewise.
 412
 413 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 414
 415         * include/experimental/internet: Include netinet/in.h if we have
 416         _GLIBCXX_HAVE_NETINET_IN_H defined.
 417
 418         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 419         FreeBSD warning about lower advertised precision of tgammal.
 420         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 421         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 422         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 423         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 424         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 425         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 426         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 427         * testsuite/tr1/5_numerical_facilities/special_functions/
 428         08_cyl_bessel_i/check_nan.cc: Likewise.
 429         * testsuite/tr1/5_numerical_facilities/special_functions/
 430         09_cyl_bessel_j/check_nan.cc: Likewise.
 431         * testuite/tr1/5_numerical_facilities/special_functions/
 432         10_cyl_bessel_k/check_nan.cc: Likewise.
 433         * testsuite/tr1/5_numerical_facilities/special_functions/
 434         11_cyl_neumann/check_nan.cc: Likewise.
 435         * testsuite/tr1/5_numerical_facilities/special_functions/
 436         21_sph_bessel/check_nan.cc: Likewise.
 437         * testsuite/tr1/5_numerical_facilities/special_functions/
 438         23_sph_neumann/check_nan.cc: Likewise.
 439
 440 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 441
 442         * include/std/span (span(element_type(&)[N]))
 443         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 444         Deduce array element type to allow safe const conversions (LWG 3255).
 445         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 446         remove_cv_t on arguments to __is_std_span and __is_std_array.
 447         * testsuite/23_containers/span/lwg3255.cc: New test.
 448
 449         PR libstdc++/77936
 450         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 451
 452 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 453
 454         * include/bits/stl_algo.h (merge): Fix documentation.
 455         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 456         (__check_sorted): Likewise and remove nested irreflexive check.
 457         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 458         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 459         (_Irreflexive_checker::_S_is_valid): Likewise.
 460         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 461         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 462         (__valid_range_aux): Add C++20 constexpr.
 463         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 464         Likewise and add std::is_constant_evaluated check.
 465         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 466         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 467         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 468         use latter.
 469         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 470         __builtin_is_contant_evaludated check..
 471         (__can_advance, __base): Add constexpr.
 472         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 473         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 474         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 475         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 476         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 477         std::less.
 478         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 479         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 480         lambda to be irreflexive.
 481
 482 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 483
 484         * configure: Regenerate.
 485
 486 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 487
 488         PR libstdc++/91910
 489         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 490         atomically and lock the mutex before accessing the sequence.
 491         (_Safe_local_iterator_base::_M_detach()): Likewise.
 492         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 493
 494 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 495
 496         * include/debug/array (to_array): Define for debug mode.
 497
 498         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 499         piecewise construction constructor, assignment operators, and swap.
 500         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 501         Add _GLIBCXX20_CONSTEXPR.
 502         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 503         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 504         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 505
 506         * include/experimental/internet (operator==, operator<): Fix loop
 507         condition to avoid reading past the end of the array.
 508
 509         * include/std/array: Remove references to profile mode.
 510         * include/std/bitset: Likewise.
 511         * include/std/deque: Likewise.
 512         * include/std/forward_list: Likewise.
 513         * include/std/list: Likewise.
 514         * include/std/map: Likewise.
 515         * include/std/set: Likewise.
 516         * include/std/unordered_map: Likewise.
 517         * include/std/unordered_set: Likewise.
 518         * include/std/vector: Likewise.
 519         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 520         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 521
 522 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 523
 524         * include/bits/regex.h
 525         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 526         argument (LWG 3296).
 527         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 528         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 529
 530 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 531
 532         * include/std/variant (variant::index()): Remove impossible case.
 533
 534         PR libstdc++/91871
 535         * testsuite/util/testsuite_hooks.h
 536         (conversion::iterator_to_const_iterator()): Do not return an invalid
 537         iterator. Test direct-initialization and direct-list-initialization
 538         as well as implicit conversion.
 539
 540 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 541
 542         PR libstdc++/91788 (partial)
 543         * include/std/variant (variant::index()): Improve codegen for cases
 544         where conversion to size_t already works correctly.
 545
 546 2019-09-23  Andreas Schwab  <schwab@suse.de>
 547
 548         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 549
 550 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 551
 552         PR libstdc++/91748
 553         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 554         case.
 555         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 556         access iterators.
 557
 558 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 559
 560         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 561         Fix syntax error.
 562
 563         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 564         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 565         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 566         for C++2a and up.
 567
 568 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 569
 570         * include/std/type_traits (__do_common_type_impl): Implement
 571         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 572         (basic_common_reference, common_reference, common_reference_t): Define
 573         for C++20.
 574         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 575         test.
 576         * testsuite/20_util/common_reference/requirements/
 577         explicit_instantiation.cc: New test.
 578         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 579         test.
 580
 581         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 582         non-template overloads for each signed and unsigned integer type and
 583         char. Define deleted overload for bool (LWG 3266).
 584         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 585         * testsuite/20_util/to_chars/3.cc: New test.
 586         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 587
 588 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 589
 590         * acinclude.m4: Handle uclinux*.
 591         * configure: Regenerate.
 592         * configure.host: Handle uclinux*
 593
 594 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 595         Mickaël Guêné <mickael.guene@st.com>
 596
 597         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 598         support.
 599
 600 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 601
 602         PR libstdc++/91711
 603         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 604         0ul being a valid null pointer constant.
 605
 606         * include/std/type_traits (__remove_cv_t): New alias template.
 607         (is_void, is_integral, is_floating_point, is_pointer)
 608         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 609         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 610         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 611         (__decay_selector): Use __remove_cv_t.
 612         (remove_cv): Add partial specializations for cv-qualified types.
 613         (__decay_t): New alias template.
 614         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 615         __decay_t.
 616         (__enable_if_t): Move earlier in the file.
 617         (_Require): Use __enable_if_t.
 618         (swap(T&, T&)): Use _Require.
 619         (swap(T(&)[N])): Use __enable_if_t.
 620
 621 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 622
 623         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 624         Issue 3256 - Feature testing macro for constexpr algorithms,
 625         and Issue 3257 - Missing feature testing macro update from P0858.
 626         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 627         * include/bits/algorithmfwd.h: Ditto.
 628         * include/std/utility: Ditto.
 629         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 630         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 631         __cpp_lib_constexpr macro in <algorith>.
 632         * testsuite/20_util/exchange/constexpr.cc: Add check for
 633         __cpp_lib_constexpr macro in <utility>.
 634         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 635         __cpp_lib_constexpr_algorithms.
 636         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 637         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 638         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 639         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 640         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 641         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 642         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 643         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 644         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 645         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 646         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 647         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 648         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 649         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 650         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 651         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 652         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 653         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 654         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 655         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 656         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 657         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 658         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 659         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 660         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 661         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 662         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 663         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 664         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 665         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 666         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 667         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 668         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 669         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 670         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 671         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 672         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 673         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 674         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 675         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 676         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 677         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 678         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 679         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 680         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 681         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 682         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 683         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 684         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 685         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 686         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 687         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 688         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 689
 690 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 691
 692         Update docs for recent <span> and constexpr lib changes.
 693         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 694         p1023r0, p1085r2 status.
 695         * doc/html/manual/status.html: Regenerate.
 696
 697 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 698
 699         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 700         final offsets with constants.
 701
 702 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 703
 704         * include/bits/range_access.h (__adl_to_address): Remove.
 705         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 706         with span::__is_compatible.
 707         (__is_std_array_v): Replace with __is_std_array class template and
 708         partial specializations.
 709         (__is_std_array, __is_std_span): New class templates and partial
 710         specializations.
 711         (span::__is_compatible): New alias template for SFINAE constraints.
 712         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 713         not use __adl_data to obtain a pointer.
 714         (span::span(array<value_type, N>&)): Likewise.
 715         (span::span(const array<value_type, N>&)): Likewise.
 716         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 717         (span::iter_value_t, span::derived_from): New alias templates for
 718         SFINAE constraints, until the equivalents are supported in <concepts>
 719         and <iterator>.
 720         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 721         for SFINAE constraints.
 722         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 723         SFINAE constraints.
 724         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 725         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 726         Use std::to_address instead of __adl_to_address.
 727         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 728         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 729         template for SFINAE constraints.
 730         [!_GLIBCXX_P1394] (span::span(Container&))
 731         (span::span(const Container&)): Improve constraints.
 732         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 733         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 734         (span(const span<OType, OExtent>&)): New constructor.
 735
 736 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 737
 738         * include/bits/range_access.h (ssize): Define for C++20.
 739         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 740         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 741         * doc/html/*: Regenerate.
 742
 743 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 744
 745         * configure: Regenerate.
 746
 747 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 748
 749         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 750         P1024R3. Remove entry for P0920R2.
 751         * include/std/span  (__cpp_lib_span): Change value.
 752         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 753         constructor.
 754         (span): Replace __extent_storage base class with data member.
 755         (span::_S_subspan_extent): New function.
 756         (span::empty()): Add nodiscard attribute.
 757         (span::front, span::back, span::operator[]): Check preconditions.
 758         (span::first, span::last, span::subspan): Add noexcept. Improve
 759         precondition checks (LWG 3103).
 760         (get): Remove redundant condition from static_assert.
 761         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 762         (as_writable_bytes): Add inline specifier.
 763         * include/std/version (__cpp_lib_span): Change value.
 764         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 765         * testsuite/23_containers/span/front_neg.cc: Likewise.
 766         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 767         * testsuite/23_containers/span/last_neg.cc: Improve test.
 768         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 769         * testsuite/23_containers/span/1.cc: New test.
 770         * testsuite/23_containers/span/2.cc: New test.
 771         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 772         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 773         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 774         * testsuite/23_containers/span/first_neg.cc: New test.
 775         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 776         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 777         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 778         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 779         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 780         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 781         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 782         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 783         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 784         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 785
 786 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 787
 788         * include/Makefile.am: Add <span> header.
 789         * include/Makefile.in: Regenerate.
 790         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 791         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 792         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 793         New functions for performing argument-dependent lookup of range
 794         customization points.
 795         * include/bits/stl_iterator.h (__normal_iterator): Add
 796         _GLIBCXX20_CONSTEXPR to all functions.
 797         * include/std/span: New header.
 798         * include/std/version (__cpp_lib_span): Define feature test macro.
 799         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 800         * testsuite/23_containers/span/everything.cc: New test.
 801         * testsuite/23_containers/span/get_neg.cc: New test.
 802         * testsuite/23_containers/span/last_neg.cc: New test.
 803         * testsuite/23_containers/span/subspan_neg.cc: New test.
 804         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 805         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 806         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 807
 808 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 809
 810         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 811         * doc/html/*: Regenerate.
 812
 813 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 814
 815         PR libstdc++/41861
 816         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 817         pthread_cond_clockwait function.
 818         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 819         * configure: Regenerate.
 820         * config.h.in: Regenerate.
 821         * include/std/condition_variable: (condition_variable): Rename
 822         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 823         a typedef for the preferred clock to convert arbitrary other clocks to.
 824         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 825         overload.
 826         (wait_until): Change __clock_t overload to use system_clock.
 827         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 828         steady_clock overload that calls pthread_cond_clockwait.
 829         (__wait_until_impl): Change __clock_t overload to use system_clock.
 830         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 831         steady_clock for __clock_t if pthread_cond_clockwait is available.
 832
 833 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 834
 835         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 836         Parameterise so that test can be run against an arbitrary clock.
 837         (main): Test using std::chrono::steady_clock and a user-defined
 838         clock in addition to the previous std::chrono::system_clock.
 839         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 840
 841 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 842
 843         * crossconfig.m4: Remove references to spu.
 844         * configure: Regenerate.
 845         * doc/xml/manual/appendix_contributing.xml: Remove references
 846         to __ea as "badword" for spu.
 847         * doc/html/manual/source_code_style.html: Regenerate.
 848         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 849         to avoid __ea (as "badword" for spu).
 850         (__ellint_rj): Likewise.
 851
 852 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 853
 854         PR other/79543
 855         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 856         scanning to conform to the GNU Coding Standards.
 857         * configure: Regenerate.
 858
 859 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 860
 861         * src/c++17/memory_resource.cc: Use __constinit keyword.
 862
 863 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 864
 865         * doc/xml/manual/abi.xml: Document 9.x library versions.
 866         * doc/html/*: Regenerate.
 867
 868 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 869
 870         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 871         (__detail::__to_chars_8_len): Remove.
 872         (__detail::__to_chars_8): Inline length calculation here.
 873         (__detail::__from_chars_binary): Use numeric_limits instead of
 874         CHAR_BIT.
 875
 876 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 877
 878         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 879         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 880         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 881         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 882         Likewise.
 883
 884 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 885
 886         * testsuite_files/util/testsuite_performance.h
 887         (resource_counter::start): Ignore unused malloc(0) result.
 888
 889 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 890
 891         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 892         Model Object Technologies): Adjust name and link.
 893
 894 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 895
 896         * include/std/charconv (__detail::__to_chars_8)
 897         __detail::__to_chars_16): Replace array of precomputed digits with
 898         arithmetic operations to avoid CPU cache misses. Remove zero
 899         termination from array of digits to allow symbol merge with generic
 900         implementation of __detail::__to_chars. Replace final offsets with
 901         constants. Use __detail::__to_chars_len_2 instead of a generic
 902         __detail::__to_chars_len.
 903         (__detail::__to_chars): Remove zero termination from array of digits.
 904         (__detail::__to_chars_2): Leading digit is always '1'.
 905
 906 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 907
 908         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 909
 910 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 911
 912         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 913
 914 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 915
 916         PR libstdc++/89164
 917         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 918         to template parameters.
 919         * include/bits/stl_uninitialized.h (uninitialized_copy)
 920         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 921         diagnose invalid uses.
 922         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 923         Adjust expected error.
 924         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 925         New test.
 926         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 927         89164.cc: New test.
 928         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 929         New test.
 930         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 931         89164.cc: New test.
 932         * testsuite/23_containers/vector/cons/89164.cc: New test.
 933         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 934
 935 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 936
 937         PR libstdc++/91067
 938         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 939         * configure: Regenerate.
 940         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 941         missing symbols.
 942         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 943         constructors.
 944         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 945
 946 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 947
 948         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 949         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 950
 951 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 952
 953         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 954         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 955         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 956         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 957         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 958         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 959         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 960
 961 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 962
 963         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 964         (std::filesystem::__gnu_posix::lstat): Add return type.
 965
 966 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 967
 968         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 969
 970         * include/std/numeric (reduce): Fix Doxygen markup.
 971
 972         PR libstdc++/91371
 973         * include/std/type_traits (is_function): Simplify definition. Remove
 974         partial specializations for function types.
 975         (__is_referenceable): Simplify definition.
 976         * testsuite/20_util/bind/91371.cc: New test.
 977         * testsuite/20_util/is_function/91371.cc: New test.
 978         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 979         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 980         * testsuite/20_util/is_object/91371.cc: New test.
 981
 982 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 983
 984         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 985
 986 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 987
 988         PR libstdc++/91456
 989         * include/bits/std_function.h (__check_func_return_type): Remove.
 990         (function::_Callable): Use std::__is_invocable_impl instead of
 991         __check_func_return_type.
 992         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 993         template parameter. Define a separate partial specialization for
 994         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
 995         with a check that models delayed temporary materialization.
 996         * testsuite/20_util/function/91456.cc: New test.
 997         * testsuite/20_util/is_invocable/91456.cc: New test.
 998
 999 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
1000
1001         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
1002
1003 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
1004
1005         Implement C++20 p0879 - Constexpr for swap and swap related functions.
1006         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
1007         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
1008         New macro.
1009         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
1010         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
1011         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
1012         * include/bits/move.h (swap): Add constexpr.
1013         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
1014         (__gcd, __rotate, rotate, __partition, __heap_select)
1015         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
1016         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
1017         (__introselect, __chunk_insertion_sort, next_permutation)
1018         (prev_permutation, partition, partial_sort, nth_element, sort)
1019         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
1020         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
1021         (swap_ranges): Add constexpr.
1022         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
1023         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
1024         Add constexpr.
1025         * include/std/type_traits (swap): Add constexpr.
1026         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
1027         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
1028         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
1029         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
1030         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
1031         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
1032         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
1033         * testsuite/25_algorithms/partition/constexpr.cc: New test.
1034         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
1035         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
1036         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
1037         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
1038         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
1039         * testsuite/25_algorithms/sort/constexpr.cc: New test.
1040         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
1041         * testsuite/25_algorithms/swap/constexpr.cc: New test.
1042         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
1043
1044 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
1045
1046         PR libstdc++/90361
1047         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
1048
1049         * include/std/tuple (__unpack_std_tuple): New variable template and
1050         partial specializations.
1051         (apply, make_from_tuple): Add noexcept-specifier.
1052         * testsuite/20_util/tuple/apply/2.cc: New test.
1053         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
1054
1055 2019-08-09  Corentin Gay  <gay@adacore.com>
1056
1057         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
1058         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
1059         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
1060         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
1061         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
1062         Add call to `VERIFY`.
1063
1064 2019-08-09  Alexandre Oliva <oliva@adacore.com>
1065
1066         * include/ext/random
1067         (normal_mv_distribution::param_type::param_type): New private
1068         ctor taking a decomposed varcov matrix, for use by...
1069         (operator>>): ... this, befriended.
1070         * include/ext/random.tcc (operator>>): Use it.
1071         (normal_mv_distribution::param_type::_M_init_lower): Adjust
1072         member function name in exception message.
1073
1074 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1075
1076         P0325R4 to_array from LFTS with updates
1077         * include/experimental/array (to_array): Qualify call to __to_array.
1078         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1079         * include/std/version (__cpp_lib_to_array): Likewise.
1080         * testsuite/23_containers/array/creation/1.cc: New test.
1081         * testsuite/23_containers/array/creation/2.cc: New test.
1082         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1083         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1084         Use zero for dg-error line number.
1085
1086 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1087
1088         P1651R0 bind_front should not unwrap reference_wrapper
1089         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1090         * include/std/version (__cpp_lib_bind_front): Update value.
1091         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1092         feature test macro.
1093         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1094
1095         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1096         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1097         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1098         specializations for __float128.
1099         * testsuite/26_numerics/numbers/float128.cc: New test.
1100
1101 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1102
1103         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1104         doxygen.nl.
1105
1106 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1107
1108         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1109         in <algorithm> and <utility> Headers.
1110         Implement C++20 p1023 - constexpr comparison operators for std::array.
1111         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1112         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1113         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1114         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1115         none_of, partition_copy, partition_point, remove, remove_if,
1116         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1117         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1118         count_if, equal, find, find_first_of, find_if, for_each, generate,
1119         generate_n, lexicographical_compare, merge, mismatch, replace,
1120         replace_if, search, search_n, set_difference, set_intersection,
1121         set_symmetric_difference, set_union, transform, unique_copy):
1122         Mark constexpr.
1123         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1124         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1125         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1126         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1127          Use const ref instead of ref arg;
1128         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1129         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1130         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1131         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1132         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1133         __iter_comp_iter): Mark constexpr.
1134         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1135         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1136         none_of, any_of, find_if_not, is_partitioned, partition_point,
1137         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1138         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1139         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1140         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1141         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1142         __equal_range, equal_range, binary_search, __includes, includes,
1143         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1144         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1145         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1146         find_if, find_first_of, adjacent_find, count, count_if, search,
1147         search_n, transform, replace, replace_if, generate, generate_n,
1148         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1149         set_intersection, __set_difference, set_difference,
1150         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1151         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1152         wrappers around __builtin_memmove and __builtin_memcmp
1153         respectively;
1154         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1155         copy, move, __copy_move_b, __copy_move_backward_a,
1156         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1157         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1158         __lexicographical_compare_impl, __lexicographical_compare,
1159         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1160         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1161         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1162         is_heap): Mark constexpr.
1163         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1164         is_heap): Mark constexpr.
1165         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1166         * include/std/array: Make comparison ops constexpr.
1167         * include/std/utility: Make exchange constexpr.
1168         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1169         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1170         * testsuite/23_containers/array/tuple_interface/
1171         tuple_element_neg.cc: Adjust.
1172         * testsuite/20_util/exchange/constexpr.cc: New.
1173         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1174         * testsuite/25_algorithms/constexpr_macro.cc: New.
1175         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1176         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1177         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1178         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1179         * testsuite/25_algorithms/copy/constexpr.cc: New.
1180         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1181         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1182         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1183         * testsuite/25_algorithms/count/constexpr.cc: New.
1184         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1185         * testsuite/25_algorithms/equal/constexpr.cc: New.
1186         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1187         * testsuite/25_algorithms/fill/constexpr.cc: New.
1188         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1189         * testsuite/25_algorithms/find/constexpr.cc: New.
1190         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1191         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1192         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1193         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1194         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1195         * testsuite/25_algorithms/generate/constexpr.cc: New.
1196         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1197         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1198         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1199         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1200         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1201         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1202         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1203         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1204         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1205         * testsuite/25_algorithms/merge/constexpr.cc: New.
1206         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1207         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1208         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1209         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1210         * testsuite/25_algorithms/remove/constexpr.cc: New.
1211         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1212         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1213         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1214         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1215         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1216         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1217         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1218         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1219         * testsuite/25_algorithms/search/constexpr.cc: New.
1220         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1221         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1222         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1223         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1224         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1225         * testsuite/25_algorithms/transform/constexpr.cc: New.
1226         * testsuite/25_algorithms/unique/constexpr.cc: New.
1227         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1228         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1229
1230 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1231
1232         * include/std/memory (make_obj_using_allocator): Qualify call to
1233         uses_allocator_construction_args.
1234
1235         P0631R4 Math Constants
1236         * include/Makefile.am: Add new header.
1237         * include/Makefile.in: Regenerate.
1238         * include/precompiled/stdc++.h: Include new header.
1239         * include/std/numbers: New header.
1240         * include/std/version (__cpp_lib_math_constants): Define.
1241         * testsuite/26_numerics/numbers/1.cc: New test.
1242         * testsuite/26_numerics/numbers/2.cc: New test.
1243         * testsuite/26_numerics/numbers/3.cc: New test.
1244         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1245
1246         * include/std/bit: Add Doxygen comments.
1247
1248         PR libstdc++/91308
1249         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1250         constraints on deleter that should only apply to the constructor.
1251         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1252         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1253         constraints on deleter here.
1254         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1255
1256 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1257
1258         PR libstdc++/51333
1259         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1260         constructor inline.
1261         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1262         constructor.
1263         * testsuite/18_support/51333.cc: New test.
1264
1265 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1266
1267         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1268         to the Doxygen manual. Avoid a "here" link on the way.
1269         Fix another broken link to Doxygen docblocks.
1270
1271 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1272
1273         * include/std/bit (__cpp_lib_endian): Define.
1274         * include/std/version (__cpp_lib_endian): Define.
1275         * testsuite/26_numerics/endian/2.cc: New.
1276         * testsuite/26_numerics/endian/3.cc: New.
1277         * testsuite/26_numerics/endian/4.cc: New.
1278
1279 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1280
1281         * testsuite/util/testsuite_iterators.h
1282         (bidirectional_iterator_wrapper): Fix type comment.
1283         (random_access_iterator_wrapper): Likewise.
1284
1285 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1286
1287         * include/std/bit (endian): Move definition here as per P1612R1.
1288         * include/std/type_traits (endian): Remove definition from here.
1289         * testsuite/20_util/endian/1.cc: Rename to ...
1290         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1291
1292 2019-07-25  Martin Liska  <mliska@suse.cz>
1293             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1294
1295         PR c++/23383
1296         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1297         -fno-allocation-dce.
1298         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1299         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1300         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1301
1302 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1303
1304         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1305         * testsuite/26_numerics/bit/bit.count/*: Here.
1306
1307         * include/std/bit (__rotl, __rotr): Change second parameter from
1308         unsigned int to int and handle negative values.
1309         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1310         parameter from unsigned int to int. Add nodiscard attribute.
1311         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1312         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1313         shifts.
1314         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1315         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1316         shifts.
1317
1318         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1319         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1320         so that out of range values cause undefined behaviour. Ensure that
1321         shift will still be undefined if left operand is promoted.
1322         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1323         unrepresentable values with checks that they are not core constant
1324         expressions.
1325         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1326
1327 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1328
1329         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1330         sized deallocation size computation.
1331
1332 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1333
1334         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1335
1336 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1337
1338         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1339         (~_Temporary_buffer()): Use latter.
1340         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1341
1342 2019-07-17  Andreas Schwab  <schwab@suse.de>
1343
1344         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1345
1346 2019-07-16  Jason Merrill  <jason@redhat.com>
1347
1348         * include/std/memory (uses_allocator_construction_args): Add parens
1349         around constraint.
1350
1351 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1352
1353         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1354
1355         * include/experimental/string_view (__detail::__idt): Remove.
1356         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1357         Use __type_identity_t instead of __detail::__idt;
1358         * include/std/string_view (__detail::__idt): Remove.
1359         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1360         Use __type_identity_t instead of __detail::__idt;
1361         * include/std/type_traits (__type_identity_t): New alias template.
1362
1363         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1364         and floating point atomics.
1365
1366 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1367
1368         * doc/xml/manual/configure.xml: Improve documentation of
1369         --enable-libstdcxx-time option.
1370
1371         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1372         wrappers around atomic built-ins.
1373         (__atomic_float, __atomic_ref): New class templates for use as base
1374         classes.
1375         * include/std/atomic (atomic<float>, atomic<double>)
1376         (atomic<long double>): New explicit specializations.
1377         (atomic_ref): New class template.
1378         (__cpp_lib_atomic_ref): Define.
1379         * include/std/version (__cpp_lib_atomic_ref): Define.
1380         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1381         * testsuite/29_atomics/atomic_float/1.cc: New test.
1382         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1383         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1384         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1385         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1386         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1387         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1388         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1389
1390 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1391
1392         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1393         throw() with _GLIBCXX_NOTHROW.
1394         (__atomic_add_dispatch): Return after performing atomic increment.
1395
1396 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1397
1398         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1399         (__exchange_and_add): Replace static specifier with always_inline
1400         attribute.
1401         (__exchange_and_add_single, __atomic_add_single): Likewise.
1402         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1403         combine !__gthread_active_p() and !__GTHREADS branches.
1404
1405 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1406
1407         PR libstdc++/91067
1408         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1409         * configure: Regenerate.
1410         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1411         missing symbols.
1412         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1413         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1414
1415 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1416
1417         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1418         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1419         instead of __is_identifier to detect Clang support.
1420
1421 2019-07-02  Jim Wilson  <jimw@sifive.com>
1422
1423         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1424         and xmllint.
1425         * configure: Regenerate.
1426
1427 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1428
1429         PR libstdc++/91012
1430         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1431         for the what_arg parameters.
1432         (filesystem_error::filesystem_error): Pass system_error::what() to
1433         the _Impl constructor.
1434         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1435         filesystem_error::what() contains system_error::what().
1436
1437 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1438
1439         * include/std/charconv (chars_format): Define bitmask type.
1440         * testsuite/20_util/to_chars/chars_format.cc: New test.
1441
1442         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1443         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1444         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1445         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1446         (countl_one(byte), countr_zero(byte), countr_one(byte))
1447         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1448         (log2p1(byte)): Remove.
1449         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1450         (__detail::__is_int_to_chars_type): Remove.
1451         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1452         and __is_unsigned_integer.
1453         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1454         (__is_signed_integer, __is_unsigned_integer): New helpers.
1455         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1456         std::byte overload.
1457         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1458         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1459         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1460         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1461         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1462         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1463         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1464         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1465         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1466         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1467
1468 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1469
1470         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1471         function.
1472
1473 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1474
1475         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1476         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1477         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1478         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1479
1480 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1481
1482         * include/std/numeric (midpoint(T, T)): Change implementation for
1483         floating-point types to avoid incorrect rounding of denormals.
1484         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1485         rounding with denormals.
1486         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1487         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1488
1489         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1490
1491 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1492
1493         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1494         stage of bootstrap.
1495         * configure: Regenerate.
1496
1497         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1498         Qualify calls to __never_valueless.
1499
1500         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1501         C++17 working draft.
1502
1503         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1504         vector<bool> for test.
1505         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1506
1507 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1508
1509         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1510         private.
1511         (istream_iterator::_M_read()): Do not check stream state before
1512         attempting extraction. Set stream pointer to null when extraction
1513         fails (P0738R2).
1514         (operator==(const istream_iterator&, const istream_iterator&)): Change
1515         to be a hidden friend of istream_iterator.
1516         (operator!=(const istream_iterator&, const istream_iterator&)):
1517         Likewise.
1518         (ostream_iterator::ostream_iterator()): Add default constructor.
1519         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1520         addressof.
1521         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1522         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1523         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1524         constructor taking a string.
1525         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1526         New test.
1527
1528 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1529             Jonathan Wakely  <jwakely@redhat.com>
1530
1531         PR libstdc++/90945
1532         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1533         values of type bool for vector<bool> elements.
1534         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1535         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1536
1537 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1538
1539         PR libstdc++/90920 partially revert r263433
1540         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1541         (rotate): Remove checks.
1542         * testsuite/25_algorithms/rotate/90920.cc: New test.
1543
1544         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1545         category used in invocable check.
1546         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1547         * testsuite/26_numerics/reduce/2.cc: New test.
1548
1549 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1550
1551         * include/bits/algorithmfwd.h: Change title of doc group.
1552         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1553         P0024R2.
1554         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1555         * include/std/numeric (__is_random_access_iter): New internal trait.
1556         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1557         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1558         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1559         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1560         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1561         * testsuite/26_numerics/reduce/1.cc: New test.
1562         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1563         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1564         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1565         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1566         member function.
1567
1568         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1569         in unsigned int to avoid promotion (LWG 2950).
1570
1571 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1572
1573         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1574         failure on AIX.
1575
1576         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1577
1578         PR libstdc++/90281 Fix string conversions for filesystem::path
1579         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1580         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1581         __str_codecvt_in_all to fail for partial conversions and throw on
1582         error.
1583         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1584         (path::_Cvt<char8_t>): Add explicit specialization.
1585         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1586         overloads.
1587         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1588         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1589         instead of codecvt_utf8. Use __str_codecvt_in_all and
1590         __str_codecvt_out_all.
1591         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1592         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1593         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1594         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1595         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1596         after converting to UTF-8.
1597         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1598         __str_codecvt_in_all.
1599         (path::string): Fix initialization of string types with different
1600         allocators.
1601         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1602         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1603         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1604         runtime conditions.
1605         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1606         return false for partial conversions.
1607         * include/experimental/bits/fs_path.h (u8path):
1608         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1609         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1610         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1611         instead of codecvt_utf8. Use __str_codecvt_in_all and
1612         __str_codecvt_out_all.
1613         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1614         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1615         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1616         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1617         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1618         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1619         __str_codecvt_in_all.
1620         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1621         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1622         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1623         __str_codecvt_in_all.
1624         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1625         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1626         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1627         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1628         strings and with Unicode characters outside the basic multilingual
1629         plane.
1630         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1631         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1632         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1633         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1634         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1635         empty strings and with Unicode characters outside the basic
1636         multilingual plane.
1637
1638 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1639             Jonathan Wakely  <jwakely@redhat.com>
1640
1641         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1642         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1643         deallocate node if insertion fails.
1644         (_Hashtable::_M_insert_multi_node): Likewise.
1645         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1646         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1647         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1648         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1649         (_Hashtable::extract(const _Key&)): Likewise.
1650         (_Hashtable::_M_merge_unique): Pass additional key argument.
1651         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1652         _Scoped_node.
1653         (_Hashtable::_M_insert): Likewise.
1654         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1655         (_Hashtable_alloc): Add comments to functions with misleading names.
1656
1657 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1658
1659         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1660         for std::string.
1661         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1662         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1663         header for std::allocator.
1664         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1665         using-declaration for std::size_t.
1666         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1667         Likewise.
1668         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1669         std::istream.
1670         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1671         * testsuite/experimental/map/erasure.cc: Include <string> for
1672         std::string.
1673         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1674
1675 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1676
1677         * include/experimental/type_traits (experimental::nonesuch): Use
1678         pragma to disable -Wctor-dtor-privacy warnings.
1679         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1680         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1681
1682         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1683
1684 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1685
1686         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1687         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1688         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1689         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1690
1691         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1692         (variant::emplace): Change static_assert messages from "should be"
1693         to "must be".
1694         (hash<monostate>::operator()): Remove name of unused parameter.
1695
1696         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1697         expression.
1698
1699         * include/Makefile.am: Add new <bits/charconv.h> header.
1700         * include/Makefile.in: Regenerate.
1701         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1702         (to_string(long), to_string(unsigned long), to_string(long long))
1703         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1704         * include/bits/charconv.h: New header.
1705         (__detail::__to_chars_len): Move here from <charconv>.
1706         (__detail::__to_chars_10_impl): New function extracted from
1707         __detail::__to_chars_10.
1708         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1709         (__to_chars_unsigned_type): New class template that reuses
1710         __make_unsigned_selector_base::__select to pick a type.
1711         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1712         (__detail::__to_chars_len): Move to new header.
1713         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1714         output to __detail::__to_chars_10_impl and call that.
1715         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1716         * testsuite/21_strings/basic_string/numeric_conversions/char/
1717         to_string.cc: Fix reference in comment. Remove unused variable.
1718         * testsuite/21_strings/basic_string/numeric_conversions/char/
1719         to_string_int.cc: New test.
1720
1721 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1722
1723         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1724         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1725         Replace copy with hand-rolled loop.
1726         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1727         Ditto.
1728
1729 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1730
1731         Test for C++20 p0858 - ConstexprIterator requirements.
1732         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1733         New test.
1734         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1735         New test.
1736
1737 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1738
1739         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1740         project) standards.
1741         * include/bits/c++config: Rename all macros of the form __PSTL* to
1742         _PSTL*.
1743         * include/std/algorithm: Likewise.
1744         * include/std/execution: Likewise.
1745         * include/std/numeric: Likewise.
1746         * include/std/memory: Likewise.
1747         * include/pstl/glue_memory_impl.h: Likewise.
1748         * include/pstl/numeric_impl.h: Likewise.
1749         * include/pstl/glue_memory_defs.h: Likewise.
1750         * include/pstl/execution_defs.h: Likewise.
1751         * include/pstl/utils.h: Likewise.
1752         * include/pstl/algorithm_fwd.h: Likewise.
1753         * include/pstl/unseq_backend_simd.h: Likewise.
1754         * include/pstl/glue_execution_defs.h: Likewise.
1755         * include/pstl/algorithm_impl.h: Likewise.
1756         * include/pstl/parallel_impl.h: Likewise.
1757         * include/pstl/memory_impl.h: Likewise.
1758         * include/pstl/glue_numeric_defs.h: Likewise.
1759         * include/pstl/parallel_backend_utils.h: Likewise.
1760         * include/pstl/glue_algorithm_defs.h: Likewise.
1761         * include/pstl/parallel_backend.h: Likewise.
1762         * include/pstl/glue_numeric_impl.h: Likewise.
1763         * include/pstl/parallel_backend_tbb.h: Likewise.
1764         * include/pstl/numeric_fwd.h: Likewise.
1765         * include/pstl/glue_algorithm_impl.h: Likewise.
1766         * include/pstl/execution_impl.h: Likewise.
1767         * include/pstl/pstl_config.h: Likewise.
1768         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1769         * testsuite/util/pstl/test_utils.h: Likewise.
1770         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1771         Likewise.
1772         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1773         Likewise.
1774         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1775         Likewise.
1776         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1777         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1778         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1779         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1780         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1781         Likewise.
1782         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1783         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1784         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1785         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1786         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1787         Likewise.
1788         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1789         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1790         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1791         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1792         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1793         Likewise.
1794         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1795         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1796         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1797         Likewise.
1798         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1799         Likewise.
1800         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1801         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1802         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1803         Likewise.
1804         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1805         Likewise.
1806         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1807         Likewise.
1808         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1809         Likewise.
1810         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1811         Likewise.
1812         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1813         Likewise.
1814         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1815         Likewise.
1816         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1817         Likewise.
1818         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1819         Likewise.
1820         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1821         Likewise.
1822         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1823         Likewise.
1824         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1825
1826         Rename header guards to be consistent with upstream project's
1827         conventions.
1828         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1829         _PSTL_(.*)_H to _PSTL_\U\1_H.
1830         * include/pstl/numeric_impl.h: Likewise.
1831         * include/pstl/glue_memory_defs.h: Likewise.
1832         * include/pstl/execution_defs.h: Likewise.
1833         * include/pstl/utils.h: Likewise.
1834         * include/pstl/algorithm_fwd.h: Likewise.
1835         * include/pstl/unseq_backend_simd.h: Likewise.
1836         * include/pstl/glue_execution_defs.h: Likewise.
1837         * include/pstl/algorithm_impl.h: Likewise.
1838         * include/pstl/parallel_impl.h: Likewise.
1839         * include/pstl/memory_impl.h: Likewise.
1840         * include/pstl/glue_numeric_defs.h: Likewise.
1841         * include/pstl/parallel_backend_utils.h: Likewise.
1842         * include/pstl/glue_algorithm_defs.h: Likewise.
1843         * include/pstl/parallel_backend.h: Likewise.
1844         * include/pstl/glue_numeric_impl.h: Likewise.
1845         * include/pstl/parallel_backend_tbb.h: Likewise.
1846         * include/pstl/numeric_fwd.h: Likewise.
1847         * include/pstl/glue_algorithm_impl.h: Likewise.
1848         * include/pstl/execution_impl.h: Likewise.
1849         * include/pstl/pstl_config.h: Likewise.
1850         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1851
1852         Synchronize libstdc++ parallel algorithms with upstream
1853         project.
1854         * include/pstl/algorithm_fwd.h: Synchronize with
1855         upstream PSTL project.
1856         * include/pstl/algorithm_impl.h: Likewise.
1857         * include/pstl/execution_defs.h: Likewise.
1858         * include/pstl/execution_impl.h: Likewise.
1859         * include/pstl/glue_algorithm_impl.h: Likewise.
1860         * include/pstl/glue_execution_defs.h: Likewise.
1861         * include/pstl/numeric_fwd.h: Likewise.
1862         * include/pstl/numeric_impl.h: Likewise.
1863         * include/pstl/parallel_backend.h: Likewise.
1864         * include/pstl/pstl_config.h: Likewise.
1865         * include/pstl/unseq_backend_simd.h: Likewise.
1866         * include/pstl/parallel_backend_serial.h: New file.
1867         * include/Makefile.am (pstl_headers): Add
1868         parallel_backend_serial.h.
1869         * include/Makefile.in: Regenerate.
1870
1871         Clean up non-conforming names
1872         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1873         Uglfiy copy_range1 and copy_range2
1874         (__pattern_walk2_n): Rename local n to __n
1875         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1876         Rename parameter _T to _Tp.
1877
1878         Integrate non-TBB serial backend support
1879         * include/bits/c++config: Adjust TBB detection logic to select serial
1880         PSTL backend if no TBB present.
1881         * testsuite/utils/pstl/test_utils.h: Remove check for
1882         _PSTL_USE_PAR_POLICIES
1883
1884 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1885
1886         * testsuite/24_iterators/container_access.cc: Move dg-options before
1887         dg-do directive so the target check uses the -std option.
1888
1889         PR libstdc++/90770
1890         * configure: Regenerate.
1891         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1892         * src/Makefile.in: Regenerate.
1893
1894 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1895
1896         * include/std/array: Do not include <stdexcept>.
1897         * include/std/optional: Include <exception> and
1898         <bits/exception_defines.h> instead of <stdexcept>.
1899         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1900         for std::isalnum.
1901         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1902         std::allocator.
1903         * testsuite/23_containers/map/erasure.cc: Include <string>.
1904         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1905
1906         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1907         dg-prune-output for different C++98 diagnostic.
1908         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1909         Likewise.
1910         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1911         Likewise.
1912         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1913         Likewise.
1914         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1915         Likewise.
1916         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1917         Likewise.
1918         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1919         Likewise.
1920         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1921         Likewise.
1922         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1923         Likewise.
1924         * testsuite/23_containers/vector/requirements/dr438/
1925         constructor_1_neg.cc: Likewise.
1926         * testsuite/23_containers/vector/requirements/dr438/
1927         constructor_2_neg.cc: Likewise.
1928         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1929         Likewise.
1930         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1931
1932         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1933         Do not test allocator rebinding extension for C++2a.
1934         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1935         dg-do directive for C++17 and C++2a.
1936
1937         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1938         1_c++0x.cc: Remove redundant test.
1939         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1940         2.cc: Use target selector instead of preprocessor condition.
1941         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1942         3.cc: Do not run test for C++2a.
1943         * testsuite/23_containers/forward_list/requirements/
1944         explicit_instantiation/3.cc: Likewise.
1945         * testsuite/23_containers/forward_list/requirements/
1946         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1947         for C++2a.
1948         * testsuite/23_containers/list/requirements/explicit_instantiation/
1949         1_c++0x.cc: Remove redundant test.
1950         * testsuite/23_containers/list/requirements/explicit_instantiation/
1951         2.cc: Use target selector instead of preprocessor condition.
1952         * testsuite/23_containers/list/requirements/explicit_instantiation/
1953         3.cc: Do not run test for C++2a.
1954         * testsuite/23_containers/list/requirements/explicit_instantiation/
1955         5.cc: Do not test allocator rebinding extension for C++2a.
1956         * testsuite/23_containers/map/requirements/explicit_instantiation/
1957         1_c++0x.cc: Remove redundant test.
1958         * testsuite/23_containers/map/requirements/explicit_instantiation/
1959         2.cc: Adjust comment.
1960         * testsuite/23_containers/map/requirements/explicit_instantiation/
1961         3.cc: Do not run test for C++2a.
1962         * testsuite/23_containers/map/requirements/explicit_instantiation/
1963         5.cc: Do not test allocator rebinding extension for C++2a.
1964         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1965         1_c++0x.cc: Remove redundant test.
1966         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1967         3.cc: Do not run test for C++2a.
1968         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1969         5.cc: Do not test allocator rebinding extension for C++2a.
1970         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1971         3.cc: Do not run test for C++2a.
1972         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1973         5.cc: Do not test allocator rebinding extension for C++2a.
1974         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1975         Do not run test for C++2a.
1976         * testsuite/23_containers/set/requirements/explicit_instantiation/
1977         1_c++0x.cc: Remove redundant test.
1978         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1979         Do not test allocator rebinding extension for C++2a.
1980         * testsuite/23_containers/unordered_map/requirements/
1981         explicit_instantiation/3.cc: Likewise.
1982         * testsuite/23_containers/unordered_map/requirements/
1983         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1984         for C++2a.
1985         * testsuite/23_containers/unordered_multimap/requirements/
1986         explicit_instantiation/3.cc: Do not run test for C++2a.
1987         * testsuite/23_containers/unordered_multimap/requirements/
1988         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1989         for C++2a.
1990         * testsuite/23_containers/unordered_multiset/requirements/
1991         explicit_instantiation/3.cc: Do not run test for C++2a.
1992         * testsuite/23_containers/unordered_multiset/requirements/
1993         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1994         for C++2a.
1995         * testsuite/23_containers/unordered_set/requirements/
1996         explicit_instantiation/3.cc: Do not run test for C++2a.
1997         * testsuite/23_containers/unordered_set/requirements/
1998         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1999         for C++2a.
2000         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2001         2.cc: Remove redundant test.
2002         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2003         3.cc: Do not run test for C++2a.
2004         * testsuite/23_containers/vector/requirements/explicit_instantiation/
2005         3.cc: Likewise.
2006
2007         * include/std/type_traits (is_empty, is_polymorphic, is_final)
2008         (is_abstract, is_aggregate): Remove static_assert.
2009         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
2010         from builtin only.
2011         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
2012         missing -std=gnu++17 option.
2013         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
2014         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
2015         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
2016         from builtin only.
2017
2018         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
2019         * testsuite/18_support/set_unexpected.cc: Likewise.
2020         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
2021         void.
2022         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
2023         function to be valid in C++11.
2024         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
2025         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
2026         include Library Fundamentals or Networking headers in C++11 mode.
2027         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
2028
2029         * include/std/tuple (_TC): Replace with _TupleConstraints.
2030         (_TupleConstraints): New helper for SFINAE constraints, with more
2031         expressive member functions to reduce duplication when used.
2032         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
2033         (tuple::_TCC): Replace dummy type parameter with bool non-type
2034         parameter that can be used to check the pack size.
2035         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
2036         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
2037         checking constraints in constructors.
2038         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
2039         New SFINAE helpers.
2040         (tuple::tuple): Use new helpers to reduce repitition in constraints.
2041         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
2042         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
2043         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
2044         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
2045         constraints in constructors.
2046         (tuple::__is_alloc_arg()): New SFINAE helpers.
2047         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
2048         constraints.
2049         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
2050         * testsuite/20_util/tuple/cons/90700.cc: New test.
2051         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
2052         to meet new constraint on allocator-extended default constructor.
2053
2054 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2055
2056         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
2057         * include/bits/stl_multimap.h (multimap): Likewise.
2058
2059 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
2060
2061         Rename variables and cleanup comments.
2062         * include/bits/hashtable_policy.h
2063         * include/bits/hashtable.h
2064
2065 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2066
2067         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
2068         Fix bgcolor for P0340R3.
2069         * doc/html/*: Regenerate.
2070
2071         PR libstdc++/90686
2072         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2073         <experimental/memory_resource>.
2074         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2075         P0339R6, P0340R3, P1164R1 and P1357R1.
2076         * doc/html/*: Regenerate.
2077
2078         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2079         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2080         allocator::value_type assertion for C++2a.
2081         * include/bits/hashtable.h: Likewise.
2082         * include/bits/stl_deque.h: Likewise.
2083         * include/bits/stl_list.h: Likewise.
2084         * include/bits/stl_map.h: Likewise.
2085         * include/bits/stl_multimap.h: Likewise.
2086         * include/bits/stl_multiset.h: Likewise.
2087         * include/bits/stl_set.h: Likewise.
2088         * include/bits/stl_vector.h: Likewise.
2089         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2090         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2091         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2092         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2093         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2094         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2095         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2096         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2097         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2098         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2099         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2100         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2101
2102 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2103
2104         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2105
2106 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2107
2108         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2109         constructors.
2110         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2111         function.
2112         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2113
2114 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2115
2116         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2117
2118         PR libstdc++/90682
2119         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2120         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2121         * libsupc++/eh_term_handler.h: New header defining
2122         _GLIBCXX_DEFAULT_TERM_HANDLER.
2123         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2124         (set_terminate): Restore default handler when argument is null.
2125         (set_unexpected): Likewise.
2126         * testsuite/18_support/set_terminate.cc: New test.
2127         * testsuite/18_support/set_unexpected.cc: New test.
2128
2129         * include/backward/hashtable.h (size_t, ptrdiff_t)
2130         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2131         (distance, vector, pair, __iterator_category): Remove
2132         using-declarations that add these names to namespace __gnu_cxx.
2133         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2134         * include/ext/debug_allocator.h (size_t): Likewise.
2135         * include/ext/functional (size_t, unary_function, binary_function)
2136         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2137         Likewise.
2138         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2139         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2140         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2141         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2142         * include/ext/numeric (iota): Fix outdated comment.
2143         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2144         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2145         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2146         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2147         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2148         Likewise.
2149         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2150         (allocator, __true_type, __false_type): Likewise.
2151
2152 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2153
2154         PR libstdc++/71579
2155         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2156         New helpers for checking preconditions in traits.
2157         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2158         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2159         (is_destructible, is_nothrow_destructible, is_constructible)
2160         (is_default_constructible, is_copy_constructible)
2161         (is_move_constructible, is_nothrow_default_constructible)
2162         (is_nothrow_constructible, is_nothrow_copy_constructible)
2163         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2164         (is_nothrow_assignable, is_nothrow_copy_assignable)
2165         (is_nothrow_move_assignable, is_trivially_constructible)
2166         (is_trivially_copy_constructible, is_trivially_move_constructible)
2167         is_trivially_assignable, is_trivially_copy_assignable)
2168         (is_trivially_move_assignable, is_trivially_destructible)
2169         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2170         (is_invocable_r, is_nothrow_invocable)
2171         (has_unique_object_representations, is_aggregate): Add static_asserts
2172         to make sure that type traits are not misused with incomplete types.
2173         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2174         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2175         base characteristics without assertions that can be reused in other
2176         traits.
2177         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2178         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2179         test.
2180         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2181         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2182         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2183         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2184         * testsuite/20_util/is_function/value.cc: Likewise.
2185         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2186         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2187         test.
2188         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2189         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2190         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2191         * testsuite/20_util/is_union/value.cc: Likewise.
2192         * testsuite/20_util/is_void/value.cc: Likewise.
2193         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2194
2195 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2196
2197         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2198         Add new private member function.
2199         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2200         (random_device::_M_init_pretr1(const string&)): Call new private
2201         member with string data.
2202         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2203         Define.
2204         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2205         test using COW strings.
2206         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2207         a value from the device.
2208         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2209         Fix typo in token string.
2210
2211 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2212
2213         LWG2788 basic_string spurious use of a default constructible allocator
2214         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2215         (basic_string::_M_replace_dispatch): Construct temporary string with
2216         the current allocator.
2217         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2218         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2219
2220 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2221
2222         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2223         exception classes.
2224         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2225         section about new/delete overloads. Improve section on verbose
2226         terminate handler.
2227         * doc/html/*: Regenerate.
2228
2229         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2230         P0811R3. Change status of P1353R0.
2231         * doc/html/*: Regenerate.
2232
2233         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2234         documentation of implementation-defined types for [thread.req.native].
2235         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2236         implementation-defined strings for [variant.bad.access]. Fix typo in
2237         documentation of implementation-defined support for [fs.conform.9945].
2238         * doc/html/*: Regenerate.
2239
2240 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2241
2242         PR libstdc++/85494
2243         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2244         that fails on mingw-w64.
2245
2246         PR libstdc++/88881
2247         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2248         (status(const path&, error_code&)): Use parent_path() to remove
2249         trailing slash.
2250         (symlink_status(const path&, error_code&)): Duplicate workaround for
2251         bug in _wstat for paths with trailing slash.
2252         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2253         with trailing slash.
2254         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2255         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2256
2257         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2258         once instead of building it iteratively.
2259
2260         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2261
2262         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2263         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2264         the assembler supports rdseed.
2265         * config.h.in: Regenerate.
2266         * configure: Regenerate.
2267         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2268         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2269         * doc/html/*: Regenerate.
2270         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2271         * include/bits/random.h (random_device::random_device()): Always call
2272         _M_init rather than _M_init_pretr1.
2273         (random_device::random_device(const string&)): Likewise.
2274         (random_device::operator()()): Always call _M_getval().
2275         (random_device::_M_file): Replace first member of union with an
2276         anonymous struct, with _M_file as its first member.
2277         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2278         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2279         (USE_MT19937): Define if none of the above are defined.
2280         (USE_POSIX_FILE_IO): Define.
2281         (_M_strtoul): Remove.
2282         [USE_RDSEED] (__x86_rdseed): Define new function.
2283         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2284         (random_device::_M_init(const string&)): Initialize new union members.
2285         Add support for "rdseed" and "rand_s" tokens. Decide what the
2286         "default" token does according to which USE_* macros are defined.
2287         [USE_POSIX_FILE_IO]: Store a file descriptor.
2288         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2289         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2290         code from _M_strtoul.
2291         [!USE_MT19937]: Call _M_init, transforming the old default token or
2292         numeric tokens to "default".
2293         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2294         (random_device::_M_getval()): Use new union members to obtain a
2295         random number from the stored function pointer or file descriptor.
2296         [USE_MT19937]: Obtain a value from the mt19937 engine.
2297         (random_device::_M_getval_pretr1()): Call _M_getval().
2298         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2299         instead of fileno.
2300         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2301         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2302
2303 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2304
2305         PR libstdc++/90634
2306         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2307         _M_split_cmpts() for a path with multiple components.
2308         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2309         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2310         components and reserve space in vector. Return early when there is
2311         only one component.
2312         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2313         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2314
2315         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2316         form of std::equals for C++11 compatibility.
2317
2318 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2319
2320         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2321         C++ standard at ansi.org.
2322
2323 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2324
2325         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2326         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2327         to "run".
2328
2329         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2330         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2331
2332 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2333
2334         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2335         tests to ...
2336         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2337         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2338         "compile" test to "run".
2339
2340         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2341         * doc/html/*: Regenerate.
2342         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2343         rvalue aliasing constructor.
2344         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2345         (reinterpret_pointer_cast): Add overloads taking rvalues.
2346         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2347         Add rvalue aliasing constructor.
2348         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2349         "run" and check return values as well as types.
2350         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2351         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2352         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2353         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2354         values.
2355
2356         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2357         * doc/xml/manual/intro.xml: Likewise.
2358         * include/std/future (__create_task_state): Add default arguments
2359         to make providing an allocator optional.
2360         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2361         instead of delegating to another constructor.
2362         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2363         define allocator-extended constructors for C++17 and later.
2364         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2365         C++11 and C++14.
2366         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2367         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2368         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2369
2370 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2371
2372         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2373         Don't run the libstdc++/83237 part on simulator targets.
2374
2375 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2376
2377         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2378         P0040R3.
2379         * doc/html/*: Regenerate.
2380
2381         * include/experimental/any (__any_caster): Use RTTI if comparing
2382         addresses fails, to support non-unique addresses in shared libraries.
2383         * include/std/any (__any_caster): Likewise.
2384
2385         PR libstdc++/90220
2386         * include/experimental/any (__any_caster): Constrain to only be
2387         callable for object types. Use remove_cv_t instead of decay_t.
2388         If the type decays or isn't copy constructible, compare the manager
2389         function to a dummy specialization.
2390         (__any_caster): Add overload constrained for non-object types.
2391         (any::_Manager_internal<_Op>): Add dummy specialization.
2392         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2393         and array types.
2394
2395 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2396
2397         PR libstdc++/90557
2398         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2399         reversed arguments to uninitialized_copy_n.
2400         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2401         is unchanged by copy assignment.
2402         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2403         compare path components.
2404
2405         PR libstdc++/77691
2406         * include/experimental/memory_resource: Add system header pragma and
2407         do not define anything unless compiled as C++14 or later.
2408         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2409         (__resource_adaptor_imp::do_allocate): If the requested alignment
2410         is a fundamental alignment then either allocate directly from _M_alloc
2411         or call the new _M_allocate function.
2412         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2413         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2414         of the allocator rebound to a POD type with the specified alignment.
2415         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2416         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2417         Adjust expected allocation sizes.
2418         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2419         xfail for Solaris x86.
2420
2421 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2422
2423         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2424         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2425         Use std::__remove_cvref_t when building with GCC.
2426
2427 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2428
2429         PR libstdc++/90252
2430         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2431         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2432         Use check_v3_target_prop_cached to cache the result of the test.
2433
2434         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2435
2436 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2437
2438         PR libstdc++/90252
2439         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2440         Changed v3_target_compile check from preprocess to executable.
2441         Added "-ltbb" to v3_target_compile flags.
2442
2443 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2444
2445         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2446         Add check for Thread Building Blocks 2018 or later.
2447
2448 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2449
2450         * testsuite/experimental/names.cc: Only include Networking TS headers
2451         on targets with the necessary Gthreads support.
2452
2453 2019-05-20  Marek Polacek  <polacek@redhat.com>
2454
2455         CWG 2094 - volatile scalars are trivially copyable.
2456         PR c++/85679
2457         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2458         result for volatile int.
2459
2460 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2461
2462         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2463         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2464         conditionally.
2465
2466         PR c++/90532 Ensure __is_constructible(T[]) is false
2467         * include/std/type_traits (__do_is_default_constructible_impl)
2468         (__is_default_constructible_atom, __is_default_constructible_safe):
2469         Remove.
2470         (is_default_constructible): Use is_constructible.
2471         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2472         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2473         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2474         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2475         Likewise.
2476
2477 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2478
2479         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2480         to the deallocator with -fsized-deallocation.
2481
2482 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2483
2484         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2485         test by passing correct alignment to deallocate function.
2486
2487 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2488
2489         PR libstdc++/90520
2490         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2491         Raise exception if unique_ptr tuple member has unknown structure.
2492         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2493         Adjust worker to support new __uniq_ptr_data base class. Do not
2494         assume field called _M_head_impl is the first tuple element.
2495
2496 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2497
2498         * include/bits/stl_deque.h
2499         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2500         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2501         (_Deque_base::_Deque_impl_data): New.
2502         (_Deque_base::_Deque_impl): Inherit latter.
2503         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2504         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2505         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2506         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2507         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2508         (deque<>::deque()): Default.
2509         (deque<>::deque(deque&&)): Default.
2510         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2511         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2512         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2513         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2514         _M_range_initialize.
2515         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2516         (deque<>::resize(size_type, const value_type&)): Share a single
2517         implementation.
2518         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2519         _M_range_insert_aux.
2520         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2521         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2522         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2523         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2524
2525 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2526
2527         PR libstdc++/90246
2528         * include/std/variant (holds_alternative, get, get_if): Improve
2529         static assertion messages.
2530         (bad_variant_access::bad_variant_access()): Change default message.
2531         (__throw_bad_variant_access(bool)): New overload.
2532         (get): Use new overload.
2533         (visit, visit<R>): Improve exception message.
2534
2535         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2536         targets. Add more cases from P0608R3.
2537         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2538
2539         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2540         * include/experimental/type_traits (is_detected_exact)
2541         (is_detected_exact_v): Likewise.
2542         * include/pstl/execution_defs.h (is_execution_policy)
2543         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2544         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2545         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2546         * testsuite/experimental/names.cc: New test.
2547
2548         PR libstdc++/85965
2549         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2550         assertions from the destructor.
2551         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2552         Move static_assert for hash function to here.
2553         (_Hash_table_base::_M_equals): Move static_assert for equality
2554         predicate to here.
2555         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2556         Remove.
2557         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2558         the value directly instead of calling _S_value.
2559         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2560         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2561         _S_key(_Const_Link_type).
2562         * testsuite/23_containers/set/85965.cc: Check construction,
2563         destruction, assignment and size() do not trigger the assertions.
2564         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2565         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2566         expected errors.
2567         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2568         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2569         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2570         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2571         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2572         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2573         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2574
2575         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2576         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2577         in C++11.
2578
2579         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2580         P1165R1 entries.
2581         * doc/html/*: Regenerate.
2582         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2583         of decay_t (P0777R1).
2584
2585 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2586
2587         Move from state of allocators (LWG2593)
2588         * include/bits/stl_deque.h
2589         (_Deque_base(_Deque_base&&, false_type)): Remove.
2590         (_Deque_base(_Deque_base&&, true_type)): Remove.
2591         (_Deque_base(_Deque_base&&)): Adapt.
2592         (_Deque_base::_M_move_impl()): Remove.
2593         * testsuite/util/testsuite_allocator.h
2594         (propagating_allocator(propagating_allocator&&)): Preserve move from
2595         state.
2596         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2597         Adapt.
2598         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2599         Adapt.
2600         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2601         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2602         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2603         Adapt.
2604         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2605         Adapt.
2606         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2607         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2608         (test02): Adapt.
2609         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2610         (test02): Adapt.
2611         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2612         (test02): Adapt.
2613         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2614         (test02): Adapt.
2615         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2616         Adapt.
2617         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2618         Adapt.
2619         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2620         (test02): Adapt.
2621         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2622         (test02): Adapt.
2623
2624 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2625
2626         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2627         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2628
2629         * include/std/variant (__overload_set): Remove.
2630         (_Arr): New helper.
2631         (_Build_FUN): New class template to define a single FUN overload,
2632         with specializations to prevent unwanted conversions, as per P0608R3.
2633         (_Build_FUNs): New class template to build an overload set of FUN.
2634         (_FUN_type): New alias template to perform overload resolution.
2635         (__accepted_type): Use integer_constant base for failure case. Use
2636         _FUN_type for successful case.
2637         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2638         (variant::variant(_Tp&&)): Likewise.
2639         (variant::operator=(_Tp&&)): Likewise.
2640
2641         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2642         Replace raw visitation with a runtime check for the valueless state
2643         and a non-raw visitor.
2644         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2645         (variant::index()): Remove branch.
2646         (variant::swap(variant&)): Use valueless_by_exception() instead of
2647         comparing the index to variant_npos, and add likelihood attribute.
2648
2649         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2650         (_Hashtable_base::_Equal_hash_code): Define new class template.
2651         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2652         _Equal_helper.
2653
2654         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2655         Replace with _M_get non-static member function.
2656         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2657         member function.
2658         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2659         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2660
2661         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2662         _S_get accessors for members in EBO helpers.
2663         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2664         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2665         overloads.
2666         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2667         helpers.
2668         (_Hashtable_base::_M_eq()): Remove non-const overload.
2669
2670 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2671
2672         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2673
2674 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2675
2676         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2677         Fix return value.
2678
2679 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2680
2681         * config/os/solaris/solaris2.10: Move to ...
2682         * config/os/solaris: ... this.
2683         * configure.host (os_include_dir): Adapt.
2684         (abi_baseline_pair): Remove Solaris 10 handling.
2685         * config/abi/post/i386-solaris2.10: Remove.
2686         * config/abi/post/sparc-solaris2.10: Remove.
2687         * config/abi/post/i386-solaris2.11: Rename to ...
2688         * config/abi/post/i386-solaris: ... this.
2689         * config/abi/post/sparc-solaris2.11: Rename to ...
2690         * config/abi/post/sparc-solaris: ... this.
2691
2692         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2693         workaround.
2694
2695         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2696         xfail.
2697
2698 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2699
2700         * include/std/variant (__visit_with_index): Remove typedef.
2701         (__deduce_visit_result): New tag type.
2702         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2703         visitation of possibly-valueless variants, forwarding to __do_visit
2704         with the relevant tag type.
2705         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2706         and make lambda return void.
2707         (__variant_construct): Likewise.
2708         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2709         __raw_idx_visit and make lambda return void.
2710         (_Multi_array::__untag_result): Add metafunction to check the function
2711         pointer type for a tag type that dictates the kind of visitation.
2712         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2713         Use decltype(auto) instead of tagged function pointer type.
2714         (__gen_vtable_impl): Remove bool non-type parameter and unused
2715         _Variant_tuple parameter.
2716         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2717         (__gen_vtable_impl::__do_visit_invoke): Remove.
2718         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2719         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2720         for the visit<R> case, rather than dispatching to separate functions.
2721         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2722         lambda return void.
2723         (variant::swap): Likewise.
2724         (__do_visit): Replace two non-type template parameters with a single
2725         type parameter, so that the caller must specify the visitor's return
2726         type (or one of the tag types).
2727         (visit): Deduce a return type from the visitor and use the
2728         __deduce_visit_result tag to enforce that all overloads return the
2729         same type.
2730         (visit<R>): Call __do_visit<R> with explicit result type.
2731         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2732         lambda return void.
2733
2734 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2735
2736         nonesuch is insufficiently useless (lwg2996)
2737         * include/std/type_traits (struct __nonesuch): Added private base
2738         class to make __nonesuch not an aggregate and removed deleted default
2739         constructor.
2740         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2741         (operator=(const pair&)): Use __nonesuch instead of
2742         __nonesuch_no_braces.
2743         (operator=(pair&&)): Likewise
2744         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2745         of __nonesuch_no_braces.
2746         (operator=(tuple&&)): Likewise
2747         * include/experimental/type_traits (struct nonesuch): Added private
2748         base class to make nonesuch not an aggregate and removed deleted
2749         default constructor.
2750         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2751         * testsuite/experimental/type_traits/nonesuch.cc: New.
2752
2753 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2754
2755         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2756         (_Function_handler): Remove partial specializations for void return
2757         types and pointers to member.
2758         (_Function_handler::_M_manager): Adapt to removal of
2759         _Simple_type_wrapper.
2760         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2761         * include/std/functional (_Bind_result::__enable_if_void)
2762         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2763         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2764         return types.
2765         * include/std/future (__future_base::_Task_state::_M_run)
2766         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2767         change return type of lambda expressions.
2768
2769         * include/bits/invoke.h (__invoke_r): Define new function implementing
2770         the INVOKE<R> pseudo-function.
2771         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2772         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2773
2774         * include/std/type_traits (__is_nt_convertible_helper): Define it
2775         unconditionally, not only for C++20.
2776         (__is_nothrow_convertible): Define internal trait for use in C++11.
2777         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2778         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2779         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2780         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2781         that has nothrow explicit conversion but potentially-throwing implicit
2782         conversion.
2783         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2784         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2785         function to only consider implicit conversions.
2786         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2787
2788         * include/std/iterator: Include <iosfwd> instead of <istream> and
2789         <ostream>.
2790
2791         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2792         Remove unused, non-standard function.
2793
2794         * include/bits/regex.h (match_results::max_size()): Adjust return
2795         value to account for prefix/suffix/unmatched subs.
2796         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2797         reset the contained sub matches.
2798         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2799         function to set result state following a failed match.
2800         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2801         sub_match states after _M_resize. Use _M_establish_failed_match.
2802
2803         PR libstdc++/69724
2804         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2805         Replace single _Callable parameter with variadic _Args pack, to
2806         forward them directly to the tuple of decayed copies.
2807         * testsuite/30_threads/thread/cons/69724.cc: New test.
2808
2809 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2810
2811         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2812         * include/bits/basic_string.h: (operator=(const basic_string&):
2813         Move allocator decision to assign.
2814         (assign(const basic_string&)): Move allocator decision here.
2815         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2816         Add tests.
2817         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2818         Add tests.
2819
2820 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2821
2822         * testsuite/util/testsuite_allocator.h (memory_resource)
2823         (default_resource_mgr): Fix indentation.
2824
2825         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2826         Use operator-> to access raw pointer member.
2827         * testsuite/23_containers/vector/59829.cc: Likewise.
2828         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2829         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2830         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2831         for tests.
2832         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2833         its constructors and equality operators. Change converting
2834         constructors to use operator-> to access private member of the other
2835         pointer type.
2836         (PointerBase_void::operator->()): Add, for access to private member.
2837         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2838         (operator==(PointerBase, PointerBase)): Remove.
2839         (operator!=(PointerBase, PointerBase)): Remove.
2840
2841         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2842         not assume field called _M_head_impl is the first tuple element.
2843         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2844         implementation more accurate.
2845         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2846         empty pointer type and non-empty deleter.
2847
2848         LWG 2899 - Make is_move_constructible correct for unique_ptr
2849         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2850         move assignment operator.
2851         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2852         (__uniq_ptr_data): New class template with conditionally deleted
2853         special members.
2854         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2855         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2856         constructor and move assignment operator as defaulted.
2857         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2858         __uniq_ptr_impl::release().
2859         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2860         to __uniq_ptr_impl::reset(pointer).
2861         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2862         Check for new __uniq_ptr_data type.
2863         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2864
2865 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2866
2867         PR libstdc++/90454.cc path construction from void*
2868         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2869         pointers to void are rejected as well as void.
2870         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2871         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2872         pointers to void.
2873         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2874
2875         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2876         <remark> elements. Fix formatting of bibliography references.
2877
2878 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2879
2880         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2881
2882 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2883
2884         Remove Profile Mode, deprecated since 7.1.0
2885         * doc/Makefile.am: Remove XML file for profile mode docs.
2886         * doc/Makefile.in: Regenerate.
2887         * doc/xml/authors.xml: Remove authors of profile mode docs.
2888         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2889         mode.
2890         * doc/xml/manual/debug.xml: Likewise.
2891         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2892         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2893         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2894         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2895         directive.
2896         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2897         macro.
2898         * doc/html/*: Regenerate.
2899         * include/Makefile.am: Remove profile mode headers.
2900         * include/Makefile.in: Regenerate.
2901         * include/bits/c++config (std::__profile): Remove namespace.
2902         [_GLIBCXX_PROFILE]: Remove checks for macro.
2903         * include/profile/array: Remove.
2904         * include/profile/base.h: Remove.
2905         * include/profile/bitset: Remove.
2906         * include/profile/deque: Remove.
2907         * include/profile/forward_list: Remove.
2908         * include/profile/impl/profiler.h: Remove.
2909         * include/profile/impl/profiler_algos.h: Remove.
2910         * include/profile/impl/profiler_container_size.h: Remove.
2911         * include/profile/impl/profiler_hash_func.h: Remove.
2912         * include/profile/impl/profiler_hashtable_size.h: Remove.
2913         * include/profile/impl/profiler_list_to_slist.h: Remove.
2914         * include/profile/impl/profiler_list_to_vector.h: Remove.
2915         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2916         * include/profile/impl/profiler_node.h: Remove.
2917         * include/profile/impl/profiler_state.h: Remove.
2918         * include/profile/impl/profiler_trace.h: Remove.
2919         * include/profile/impl/profiler_vector_size.h: Remove.
2920         * include/profile/impl/profiler_vector_to_list.h: Remove.
2921         * include/profile/iterator_tracker.h: Remove.
2922         * include/profile/list: Remove.
2923         * include/profile/map: Remove.
2924         * include/profile/map.h: Remove.
2925         * include/profile/multimap.h: Remove.
2926         * include/profile/multiset.h: Remove.
2927         * include/profile/ordered_base.h: Remove.
2928         * include/profile/set: Remove.
2929         * include/profile/set.h: Remove.
2930         * include/profile/unordered_base.h: Remove.
2931         * include/profile/unordered_map: Remove.
2932         * include/profile/unordered_set: Remove.
2933         * include/profile/vector: Remove.
2934         * scripts/run_doxygen: Do not process profile mode headers.
2935         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2936         profile mode type.
2937         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2938         Remove dg-skip-if for profile mode.
2939         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2940         preprocessor check for profile mode.
2941         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2942         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2943         for profile mode.
2944         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2945         Likewise.
2946         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2947         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2948         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2949         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2950         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2951         Likewise.
2952         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2953         Likewise.
2954         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2955         Likewise.
2956         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2957         Likewise.
2958         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2959         preprocessor check for profile mode.
2960         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2961         Likewise.
2962         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2963         Remove dg-skip-if for profile mode.
2964         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2965         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2966         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2967         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2968         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2969         * testsuite/Makefile.am: Remove profile_flags variable and
2970         * testsuite/Makefile.am: Remove profile_flags variable and
2971         check-profile target.
2972         * testsuite/Makefile.in: Regenerate.
2973         * testsuite/ext/profile/all.cc: Remove.
2974         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2975         * testsuite/ext/profile/profiler_algos.cc: Remove.
2976         * testsuite/ext/profile/replace_new.cc: Remove.
2977         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2978         preprocessor check for profile mode.
2979         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2980         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2981         (check_v3_target_normal_mode): Do not check for profile mode macro.
2982         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2983         profile mode.
2984         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2985         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2986         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2987         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2988         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2989         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2990         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2991         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2992         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2993         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
2994
2995         Remove array_allocator extension, deprecated since 4.9.0
2996         * doc/xml/manual/allocator.xml: Remove documentation for
2997         array_allocator.
2998         * doc/xml/manual/evolution.xml: Document array_allocator removal.
2999         * doc/xml/manual/using.xml: Remove header from documentation.
3000         * include/Makefile.am: Remove <ext/array_allocator.h> header.
3001         * include/Makefile.in: Regenerate.
3002         * include/ext/array_allocator.h: Remove.
3003         * include/precompiled/extc++.h: Do not include removed header.
3004         * testsuite/ext/array_allocator/1.cc: Remove.
3005         * testsuite/ext/array_allocator/2.cc: Remove.
3006         * testsuite/ext/array_allocator/26875.cc: Remove.
3007         * testsuite/ext/array_allocator/3.cc: Remove.
3008         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
3009         * testsuite/ext/array_allocator/check_delete.cc: Remove.
3010         * testsuite/ext/array_allocator/check_new.cc: Remove.
3011         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
3012         * testsuite/ext/headers.cc: Do not include removed header.
3013
3014 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
3015
3016         * include/bits/stl_bvector.h
3017         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3018         Make hidden friend.
3019         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3020         Likewise.
3021         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3022         Likewise.
3023         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3024         Likewise.
3025         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3026         Likewise.
3027         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3028         Likewise.
3029         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3030         Likewise.
3031         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
3032         copy elision.
3033         (_Bit_iterator::operator-(difference_type)): Likewise.
3034         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
3035         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
3036         NRVO copy elision.
3037         (_Bit_const_iterator::operator-(difference_type)): Likewise.
3038         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
3039
3040 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
3041
3042         PR libstdc++/81266
3043         * testsuite/util/thread/all.h: Do not use remove_pointer for
3044         std::thread::native_handle_type.
3045
3046         PR libstdc++/90397
3047         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
3048         (_Variant_storage<true, Types...>::_M_reset()))
3049         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
3050         (__get_storage): Likewise.
3051         (variant): Add noexcept to friend declarations for __get and
3052         __get_storage.
3053
3054         PR libstdc++/90388
3055         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
3056         Use _Require for constraints.
3057         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
3058         per the standard.
3059         (__uniq_ptr_hash): New base class with conditionally-disabled call
3060         operator.
3061         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
3062         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
3063         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
3064
3065         * include/bits/shared_ptr.h: Improve docs.
3066         * include/bits/shared_ptr_base.h: Likewise.
3067         * include/bits/stl_uninitialized.h: Likewise.
3068         * include/bits/unique_ptr.h: Likewise.
3069         * libsupc++/new: Likewise.
3070
3071 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
3072
3073         * include/bits/stl_deque.h
3074         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3075         Make hidden friend.
3076         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3077         Likewise.
3078         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3079         Likewise.
3080         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3081         Likewise.
3082         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3083         Likewise.
3084         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3085         Likewise.
3086         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3087         copy elision.
3088         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3089
3090 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3091
3092         PR libstdc++/90277
3093         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3094         (test01): Reserve for number of insertions to avoid rehash during test.
3095         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3096         (test01): Likewise.
3097         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3098         (test01): Likewise.
3099         (test02): Likewise.
3100         (test03): Likewise.
3101
3102 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3103
3104         * include/experimental/bits/fs_path.h: Improve docs.
3105         * include/experimental/bits/net.h: Fix wrong header name in comment.
3106         Do not document implementation details.
3107         * include/experimental/netfwd: Fix doxygen grouping.
3108
3109 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3110
3111         * include/bits/stl_pair.h: Improve docs.
3112         * include/std/tuple: Likewise.
3113
3114         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3115         inline namespace.
3116         * include/std/chrono: Improve docs.
3117         * include/std/ratio: Do not document implementation details.
3118         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3119         line numbers.
3120         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3121
3122         PR libstdc++/89102
3123         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3124         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3125         (__duration_common_type): New helper.
3126         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3127         __duration_common_type.
3128         (__timepoint_common_type_wrapper): Replace with ...
3129         (__timepoint_common_type): New helper.
3130         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3131         Use __time_point_common_type.
3132         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3133         (__common_type_impl): If either argument is transformed by decay,
3134         use the common_type of the decayed types.
3135         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3136         decayed, use __do_common_type_impl to get the common_type.
3137         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3138         (__do_member_type_wrapper, __member_type_wrapper)
3139         (__expanded_common_type_wrapper): Remove.
3140         (__common_type_pack, __common_type_fold): New helpers.
3141         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3142         __member_type_wrapper and __expanded_common_type_wrapper.
3143         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3144         Test zero-length template argument list.
3145         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3146         Test single argument cases and argument types that should decay.
3147         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3148         Adjust expected error.
3149         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3150         dg-error lineno.
3151         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3152         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3153         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3154
3155         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3156
3157 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3158
3159         Make allocator propagation more consistent for
3160         operator+(basic_string) (P1165R1)
3161         * include/bits/basic_string.h
3162         (operator+(basic_string&&, basic_string&&): Changed resulting
3163         allocator to always be the one from the first parameter.
3164         * include/bits/basic_string.tcc
3165         (operator+(const _CharT*, const basic_string&)): Changed
3166         resulting allocator to be SOCCC on the second parameter's allocator.
3167         (operator+(_CharT, const basic_string&)): Likewise.
3168         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3169         New.
3170         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3171         New.
3172
3173 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3174
3175         * include/bits/regex.h: Improve docs.
3176         * include/bits/regex.tcc: Do not document implementation details.
3177
3178         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3179
3180 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3181
3182         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3183         Add type printer for container types in std::__debug namespace.
3184         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3185         (gdb-tests): Use distinct parameters for the type of test and use of
3186         regex.
3187         (gdb-test): Check for regex test even if 'whatis' test.
3188         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3189         mode.
3190         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3191         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3192         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3193         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3194         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3195         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3196         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3197
3198 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3199
3200         * include/std/system_error (error_category): Fix comment.
3201
3202         PR libstdc++/90299
3203         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3204         argument is an empty path.
3205         (absolute(const path&, error_code&)): Use invalid_argument as error
3206         code instead of no_such_file_or_directory.
3207         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3208         of non-existent paths and empty paths with both overloads of absolute.
3209
3210         * include/std/system_error (error_category, error_code)
3211         (error_condition): Improve docs.
3212         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3213         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3214         to class documentation. Suppress documentation for implementation
3215         details.
3216         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3217         Suppress documentation for implementation details.
3218
3219         * include/std/system_error (error_code): Remove friend declaration
3220         for hash<error_code>.
3221         (hash<error_code>::operator()): Use public member functions to access
3222         value and category.
3223         (hash<error_condition>::operator()): Use address of category, not
3224         its object representation.
3225         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3226         Use public member functions to access value and category.
3227         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3228
3229 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3230
3231         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3232         * include/bits/hashtable_policy.h
3233         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3234         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3235         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3236         smaller than input value rather than always greater. Preserve
3237         _M_next_resize if called with 0 input. Use __builtin_floorl.
3238         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3239         elements + number of insertions is greater than _M_next_resize. Start
3240         with 11 buckets if not told otherwise. Use __builtin_floorl.
3241         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3242         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3243         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3244         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3245         told otherwise. Use __builtin_floorl.
3246         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3247         to also validate _Power2_rehash_policy.
3248         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3249         Adapt.
3250
3251 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3252
3253         PR libstdc++/61761
3254         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3255         std::copysign.
3256
3257         PR libstdc++/52119
3258         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3259         overflow warning with -Wpedantic -Wsystem-headers.
3260
3261 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3262
3263         PR libstdc++/90314
3264         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3265         * include/bits/move.h (swap): Remove extra parentheses.
3266
3267         * include/experimental/bits/lfts_config.h: Improve doc markup.
3268         * include/experimental/optional: Improve docs.
3269         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3270         (__constexpr_addressof): Remove.
3271         (optional::operator->()): Use std::__addressof().
3272         * include/std/optional (optional::operator->()): Adjust whitespace.
3273         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3274         that operator-> is still constexpr with overloaded operator&. Change
3275         to compile-only test.
3276         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3277         compile-only test.
3278
3279         * include/bits/shared_ptr.h: Improve docs.
3280         * include/bits/shared_ptr_atomic.h: Likewise.
3281         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3282
3283         * include/bits/basic_string.h: Fix iterator/index confusion in
3284         Doxygen comments.
3285         * include/bits/range_access.h: Fix Doxygen warnings.
3286         * include/bits/refwrap.h: Do not document implementation details.
3287         (ref, cref): Group docs with reference_wrapper.
3288         * include/std/fstream: Fix Doxygen markup.
3289         * libsupc++/initializer_list (begin, end): Group docs with
3290         initializer_list.
3291
3292         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3293
3294         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3295         * include/std/mutex: Likewise.
3296         * include/std/shared_mutex: Likewise.
3297
3298         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3299         * include/bits/fs_fwd.h: Likewise.
3300         * include/bits/fs_ops.h: Likewise.
3301         * include/bits/fs_path.h: Likewise.
3302         * include/std/filesystem: Likewise.
3303
3304         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3305         * include/experimental/buffer: Likewise.
3306         * include/experimental/executor: Likewise.
3307         * include/experimental/internet: Likewise.
3308         * include/experimental/io_context: Likewise.
3309         * include/experimental/net: Likewise.
3310         * include/experimental/netfwd: Likewise.
3311         * include/experimental/socket: Likewise.
3312         * include/experimental/timer: Likewise.
3313
3314         * doc/doxygen/doxygroups.cc: Move description of experimental group
3315         here.
3316         * include/experimental/algorithm: Add to libfund-ts doc group.
3317         * include/experimental/any: Likewise. Do not document implementation
3318         details.
3319         * include/experimental/array: Add to libfund-ts doc group.
3320         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3321         for Library Fundamentals.
3322         * include/experimental/chrono: Add to libfund-ts doc group.
3323         * include/experimental/deque: Likewise.
3324         * include/experimental/forward_list: Likewise.
3325         * include/experimental/functional: Likewise.
3326         * include/experimental/iterator: Likewise.
3327         * include/experimental/list: Likewise.
3328         * include/experimental/map: Likewise.
3329         * include/experimental/memory: Likewise.
3330         * include/experimental/memory_resource: Likewise. Improve docs.
3331         details.
3332         * include/experimental/numeric: Add to libfund-ts doc group.
3333         * include/experimental/optional: Likewise.
3334         * include/experimental/propagate_const: Likewise.
3335         * include/experimental/random: Likewise.
3336         * include/experimental/ratio: Likewise.
3337         * include/experimental/regex: Likewise.
3338         * include/experimental/set: Likewise.
3339         * include/experimental/source_location: Likewise.
3340         * include/experimental/string: Likewise.
3341         * include/experimental/string_view: Likewise.
3342         * include/experimental/system_error: Likewise.
3343         * include/experimental/tuple: Likewise.
3344         * include/experimental/type_traits: Likewise.
3345         * include/experimental/unordered_map: Likewise.
3346         * include/experimental/unordered_set: Likewise.
3347         * include/experimental/utility: Likewise.
3348         * include/experimental/vector: Likewise.
3349         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3350         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3351         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3352         Likewise.
3353         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3354         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3355         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3356         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3357         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3358
3359         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3360         * include/experimental/bits/fs_fwd.h: Improve docs.
3361         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3362         * include/experimental/bits/fs_path.h: Likewise.
3363         (path, filesystem_error, u8path): Improve docs.
3364         * include/experimental/filesystem: Link to docs for TS.
3365
3366         * config/allocator/new_allocator_base.h (__allocator_base): Add
3367         workaround for Doxygen bug #6945.
3368         * include/std/memory: Improve docs. Define group for pointer safety.
3369         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3370         conditional to suppress documentation for implementation details.
3371
3372         * include/bits/specfun.h: Improve docs.
3373         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3374         and namespaces.
3375
3376         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3377         (std::experimental): Add docs.
3378         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3379         namespace to nothing when generating docs.
3380         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3381         * include/std/chrono (std::chrono): Likewise.
3382         * include/std/functional (std::placeholders): Likewise.
3383         * include/std/thread (std::this_thread): Likewise.
3384
3385         * include/parallel/settings.h: Fix Doxygen markup.
3386
3387         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3388         anything unless PB_DS_CLASS_C_DEC is defined.
3389         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3390         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3391         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3392         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3393         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3394         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3395         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3396         Likewise.
3397         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3398         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3399         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3400         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3401         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3402         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3403         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3404         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3405         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3406         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3407         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3408         Likewise.
3409         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3410         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3411         Likewise.
3412         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3413         Likewise.
3414
3415         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3416         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3417         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3418         Doxygen expands.
3419
3420 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3421
3422         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3423         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3424         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3425         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3426         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3427         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3428         Likewise.
3429         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3430         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3431         Likewise.
3432
3433 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3434
3435         PR libstdc++/61761
3436         * include/std/complex (__complex_proj): Return parameter unchanged.
3437         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3438         floating-point types to take std::complex arguments.
3439         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3440         floating-point types.
3441         * testsuite/26_numerics/complex/proj.cc: New test.
3442
3443 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3444
3445         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3446         to _Lock_policyE[012].
3447         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3448
3449 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3450
3451         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3452         macros accidentally left in.
3453         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3454         unnecessary -lstdc++fs option. Fix test for mingw.
3455         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3456         Fix test for mingw.
3457
3458 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3459
3460         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3461
3462 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3463
3464         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3465
3466         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3467         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3468
3469         PR libstdc++/71312
3470         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3471
3472         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3473         attribute.
3474
3475         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3476         class template and partial specialization.
3477
3478         PR libstdc++/87982
3479         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3480         an integral type.
3481         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3482         functions to convert a value to an integral type.
3483         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3484         (fill_n): Convert _Size parameter to an integral type.
3485         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3486         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3487         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3488         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3489         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3490         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3491
3492 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3493
3494         Adding noexcept-specification on tuple constructors (LWG 2899)
3495         * libstdc++-v3/include/std/tuple:
3496         (tuple()): Add noexcept-specification.
3497         (tuple(const _Elements&...)): Likewise
3498         (tuple(_UElements&&...)): Likewise
3499         (tuple(const tuple<_UElements...>&)): Likewise
3500         (tuple(tuple<_UElements...>&&)): Likewise
3501         (tuple(const _T1&, const _T2&)): Likewise
3502         (tuple(_U1&&, _U2&&)): Likewise
3503         (tuple(const tuple<_U1, _U2>&): Likewise
3504         (tuple(tuple<_U1, _U2>&&): Likewise
3505         (tuple(const pair<_U1, _U2>&): Likewise
3506         (tuple(pair<_U1, _U2>&&): Likewise
3507         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3508
3509 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3510
3511         PR libstdc++/87106
3512         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3513         arguments with __restrict.
3514
3515 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3516
3517         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3518
3519 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3520
3521         * include/experimental/bits/fs_path.h
3522         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3523         avoid redundant call to _S_convert_loc with non-const pointers.
3524
3525         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3526         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3527         * testsuite/21_strings/basic_string/hash/hash.cc
3528         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3529         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3530         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3531
3532         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3533         wstring::_M_replace_dispatch with more specific patterns.
3534         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3535         Create const std::string to avoid redundant call to _S_convert_loc
3536         with non-const pointers.
3537         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3538         avoid unnecessary basic_string::assign instantiations.
3539
3540         * include/std/memory (__uses_alloc_args): Add string-literal to
3541         static_assert, to match the one in __uses_alloc.
3542         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3543         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3544         for recursive uses-allocator construction of nested pairs.
3545         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3546         comment.
3547
3548 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3549
3550         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3551         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3552         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3553         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3554
3555         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3556         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3557         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3558         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3559         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3560         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3561         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3562
3563 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3564
3565         PR libstdc++/90239
3566         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3567         * include/std/scoped_allocator [__cplusplus > 201703L]
3568         (scoped_allocator_adaptor::construct): Define in terms of
3569         uses_allocator_construction_args, as per P0591R4.
3570         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3571         * testsuite/util/testsuite_allocator.h: Remove name of unused
3572         parameter.
3573
3574 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3575
3576         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3577         * doc/html/*: Regenerate.
3578
3579         * include/bits/fs_path.h (operator<, operator<=, operator>)
3580         (operator>=, operator==, operator!=): Make hidden friends, as per
3581         LWG 3065.
3582         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3583         string type in test.
3584         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3585
3586         * include/std/any (any::any(ValueType&&)): Use __and_v.
3587         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3588         Likewise.
3589
3590         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3591         as per P0777R1.
3592         * include/std/type_traits (__result_of_memfun): Use remove_reference
3593         instead of __remove_cvref_t and remove redundant is_same check.
3594         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3595
3596         * include/experimental/string_view (basic_string_view::pointer)
3597         (basic_string_view::reference): Fix to refer to non-const value_type.
3598         * include/bits/basic_string.h (basic_string): Use __sv_check and
3599         __sv_limit instead of basic_string_view::_M_check and
3600         basic_string_view::_M_limit.
3601         * include/std/string_view (__sv_check, __sv_limit): New
3602         helper functions to replace basic_string_view::_M_check and
3603         basic_string_view::_M_limit.
3604         (basic_string_view): Add static assertions to enforce ill-formed
3605         requirement for traits_type::char_type from P1148R0, and to enforce
3606         required properties of char-like types.
3607         (basic_string_view::pointer, basic_string_view::reference): Fix to
3608         refer to non-const value_type.
3609         (basic_string_view::operator[], basic_string_view::at)
3610         (basic_string_view::front, basic_string_view::back)
3611         (basic_string_view::data): Use const_reference and const_pointer
3612         typedefs for return types.
3613         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3614         (hash<wstring_view>): Fix argument_type typedef.
3615         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3616         char/1.cc: Fix expected return type of basic_string_view::data().
3617         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3618         wchar_t/1.cc: Likewise.
3619         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3620         char/1.cc: Likewise.
3621         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3622         wchar_t/1.cc: Likewise.
3623         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3624         New test.
3625         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3626         Check reference and pointer typedefs.
3627         * testsuite/experimental/string_view/requirements/typedefs.cc:
3628         Likewise.
3629         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3630         Fix expected return type of basic_string_view::data().
3631         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3632         1.cc: Likewise.
3633         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3634         Likewise.
3635         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3636         1.cc: Likewise.
3637
3638         PR libstdc++/90220
3639         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3640         Avoid a runtime check for types that can never be stored in std::any.
3641         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3642         array types.
3643
3644         PR libstdc++/90220 (partial)
3645         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3646         not attempt ill-formed static_cast to pointers to non-object types.
3647         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3648         function types.
3649
3650         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3651         prevent -Wcatch-value warning.
3652
3653         * include/std/variant (__variant_construct): Use template parameter
3654         type instead of equivalent decltype-specifier.
3655         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3656         Replace forward with move.
3657         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3658         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3659         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3660         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3661         index after construction succeeds.
3662         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3663         if-constexpr checks that are always true. Use __remove_cvref_t instead
3664         of remove_reference so that is_nothrow_move_constructible check
3665         doesn't use a const rvalue parameter. In the potentially-throwing case
3666         construct a temporary and move assign it, as per LWG 2904.
3667         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3668         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3669         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3670         construct a temporary and move assign from it, as per LWG 2904.
3671         * testsuite/20_util/variant/exception_safety.cc: Check that
3672         assignment operators have strong exception safety guarantee.
3673
3674 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3675
3676         Document PSTL linker flags
3677
3678         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3679
3680 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3681
3682         * include/std/variant (__detail::__variant::_Traits): Make
3683         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3684         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3685         P0602R4.
3686         (__detail::__variant::_Copy_assign_alias): Only depend on
3687         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3688         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3689         move assignment operators.
3690
3691         PR libstdc++/90165
3692         * include/std/variant (variant::__not_self): New helper for the
3693         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3694         (variant::__to_type_impl): Remove.
3695         (variant::__to_type): Add default argument to check pack size, instead
3696         of using __to_type_impl.
3697         (variant::__accepted_type): Add default argument using __not_self.
3698         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3699         for variant(T&&) constructor constraint.
3700         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3701         Extract __accepted_type into a named template parameter for reuse in
3702         other constraints and in the exception specification.
3703         (variant::variant(in_place_type_t<T>, Args&&...))
3704         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3705         (variant::variant(in_place_index_t<T>, Args&&...))
3706         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3707         (variant::operator=T&&)): Remove redundant && from trait arguments.
3708         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3709         isn't used for in_place_type or in_place_index arguments.
3710
3711         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3712         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3713         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3714
3715 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3716             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3717             Jakub Jelinek  <jakub@redhat.com>
3718
3719         PR target/89093
3720         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3721         general-regs-only target attribute for ARM.
3722
3723 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3724
3725         PR libstdc++/87431
3726         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3727         specialization also depend on is_nothrow_move_constructible.
3728         * include/std/variant (__detail::__variant::__never_valueless()):
3729         Only true if the variant would have a move assignment operator.
3730         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3731         Check __never_valueless<T...>().
3732         (variant::emplace): Only perform non-throwing move assignments
3733         for never-valueless alternatives if the variant has a move assignment
3734         operator.
3735         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3736         types can be emplaced into non-assignable variants.
3737         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3738         don't get copied when emplaced into non-assignable variants.
3739
3740         * include/std/variant (__detail::__variant::__ref_cast): Remove
3741         unused function.
3742         (__detail::__variant::_Uninitialized::_M_get)
3743         (__detail::__variant::__get)
3744         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3745
3746 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3747
3748         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3749         to Darwin10.
3750         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3751         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3752         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3753         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3754
3755 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3756
3757         Delegate PSTL configuration to pstl/pstl_config.h
3758
3759         * include/bits/c++config: Remove explicit PSTL configuration
3760         macros and use definitions from <pstl/pstl_config.h>.
3761
3762 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3763
3764         Cleanup algorithm implementations
3765         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3766         execution policy.
3767         (mismatch): Forward execution policy.
3768         (equal): Qualify call to std::equal().
3769         (partial_sort): Forward execution policy.
3770         (inplace_merge): Forward execution policy.
3771
3772 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3773
3774         Improve implementation of parallel equal()
3775         * include/pstl/algorithm_impl.h
3776         (__internal::__brick_equal): use "4 iterator" version of
3777         std::equal().
3778         (__internal::__brick_equal): use simd for random access
3779         iterators on unsequenced execution policies.
3780         (__internal::__pattern_equal): add "4 iterator" version
3781         (__internal::__pattern_equal): dispatch to simd __brick_equal
3782         for vector-only execution policies.
3783         (__internal::__pattern_equal): dispatch to __parallel_or for
3784         parallel execution policies.
3785         * include/pstl/glue_algorithm_impl.h
3786         (std::equal): dispatch to "4 iterator" version of
3787         __internal::__pattern_equal().
3788
3789 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3790
3791         PR libstdc++/90105
3792         * include/bits/forward_list.h (operator==): Do not use operator!= to
3793         compare elements.
3794         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3795         earlier in the list, so that sort is stable.
3796         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3797         * testsuite/23_containers/forward_list/comparable.cc: Test with
3798         types that meet the minimum EqualityComparable and LessThanComparable
3799         requirements. Remove irrelevant comment.
3800
3801         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3802         Do not depend on whether all alternative types are move constructible.
3803         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3804         from the operand when deciding whether to perform the assignment.
3805         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3806         with deleted move constructor and deleted move assignment operator.
3807         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3808         behaviour of variants with DeletedMoves as an alternative.
3809         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3810         (move_ctor, move_assign): Check that moving a variant with a
3811         DeletedMoves alternative falls back to copying instead of moving.
3812
3813         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3814         from static_assert declarations.
3815
3816         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3817         actually match its name.
3818         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3819         (test_swap()): Fix result for MoveCtorOnly and check
3820         MoveCtorAndSwapOnly.
3821
3822         * include/std/optional (optional::value_or(U&&) &&): Add missing
3823         constexpr specifier.
3824         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3825         for disengaged optionals and rvalue optionals.
3826         * testsuite/20_util/optional/observers/4.cc: Likewise.
3827
3828 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3829
3830         * include/pstl/algorithm_impl.h: Uglify identfiers.
3831         * include/pstl/numeric_impl.h:  Uglify identfiers.
3832         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3833
3834 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3835
3836         * include/bits/c++config:
3837         Add definition for __PSTL_ASSERT.
3838         Add definition for __PSTL_ASSERT_MSG.
3839         * include/pstl/algorithm_impl.h: Replace use of assert().
3840         * include/pstl/numeric_impl.h: Replace use of assert().
3841         * include/pstl/parallel_backend_tbb.h:
3842         Replace use of assert().
3843         Replace use of __TBB_ASSERT().
3844         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3845
3846 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3847
3848         PR libstdc++/90046
3849         * src/c++17/memory_resource.cc
3850         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3851         needed to allow placing a _Chunk at the end of the buffer.
3852         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3853
3854 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3855
3856         * doc/xml/faq.xml: Add information about emergency EH pool.
3857         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3858         Move outdated information on mt_allocator to a separate section.
3859         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3860         doesn't affect the default allocator.
3861
3862         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3863         typo.
3864
3865         PR libstdc++/89851
3866         * testsuite/20_util/variant/89851.cc: New test.
3867
3868 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3869
3870         * include/std/variant: Adjust whitespace. Add comments.
3871         (_Multi_array): Leave primary template undefined.
3872         (_Multi_array<_Tp>): Define partial specialization for base case of
3873         recursion.
3874         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3875         which is always a reference.
3876         (__gen_vtable::_S_apply()): Remove function, inline body into
3877         default member initializer.
3878         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3879
3880         * include/std/variant (__variant_idx_cookie): Add member type.
3881         (__visitor_result_type): Remove.
3882         (__do_visit): Use invoke_result instead of __visitor_result_type.
3883         * testsuite/20_util/variant/visit.cc: New test.
3884
3885         PR libstdc++/90008
3886         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3887         unused capture.
3888         * testsuite/20_util/variant/90008.cc: New test.
3889
3890 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3891
3892         * include/pstl/algorithm_impl.h: Add namespace qualification.
3893         * include/pstl/execution_defs.h: Add namespace qualification.
3894         * include/pstl/execution_impl.h: Add namespace qualification.
3895         * include/pstl/numeric_impl.h: Add namespace qualification.
3896         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3897         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3898         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3899
3900 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3901
3902         Fix visit<R> for variant.
3903         * include/std/variant (__do_visit): Add a template parameter
3904         for enforcing same return types for visit.
3905         (__gen_vtable_impl): Likewise.
3906         (_S_apply_single_alt): Adjust.
3907         (__visit_invoke_impl): New. Handle casting to void.
3908         (__do_visit_invoke): New. Enforces same return types.
3909         (__do_visit_invoke_r): New. Converts return types.
3910         (__visit_invoke): Adjust.
3911         (__gen_vtable):  Add a template parameter for enforcing
3912         same return types for visit.
3913         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3914         different return types.
3915         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3916         visitors with different return types don't accidentally
3917         compile with regular visitation.
3918
3919 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3920
3921         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3922         dg-require-filesystem-ts.
3923
3924 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3925
3926         * doc/xml/manual/status_cxx2020.xml: Update status.
3927         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3928         * testsuite/20_util/variant/visit_r.cc: New test.
3929
3930         * include/bits/fs_dir.h (directory_iterator::operator*)
3931         (directory_iterator::operator->): Add noexcept.
3932         (operator==, operator!=): Replace namespace-scope equality operators
3933         for directory iterators with hidden friends.
3934
3935         PR libstdc++/89986
3936         * config/abi/pre/gnu.ver: Add missing exports.
3937         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3938         increment member.
3939
3940         * config/abi/pre/gnu.ver: Export new symbols.
3941         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3942         (recursive_directory_iterator::recursion_pending())
3943         (recursive_directory_iterator::disable_recursion_pending()): Remove
3944         inline definitions. Make noexcept.
3945         (recursive_directory_iterator::depth())
3946         (recursive_directory_iterator::operator*())
3947         (recursive_directory_iterator::operator->()): Make noexcept.
3948         (recursive_directory_iterator::_M_options)
3949         (recursive_directory_iterator::_M_pending): Remove data members.
3950         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3951         (recursive_directory_iterator::recursive_directory_iterator): Remove
3952         ctor-initializer. Use new constructor for _Dir_stack.
3953         (recursive_directory_iterator::options())
3954         (recursive_directory_iterator::recursion_pending())
3955         (recursive_directory_iterator::disable_recursion_pending()): Add
3956         non-inline definitions.
3957         (recursive_directory_iterator::depth()): Make noexcept.
3958         (recursive_directory_iterator::increment(error_code&))
3959         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3960         location of options and recursion_pending members.
3961         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3962         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3963         user-declared move constructor and assignment operator, to make the
3964         type move-only.
3965
3966         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3967         d_type == DT_UNKNOWN immediately.
3968         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3969         handling here.
3970         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3971
3972         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3973         assignment.
3974         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3975         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3976         assignment.
3977
3978         PR libstdc++/87431 (again)
3979         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3980         Define partial specialization for basic_string.
3981         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3982         shared_ptr and weak_ptr.
3983         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3984         function.
3985         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3986         vector.
3987         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3988         unique_ptr.
3989         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3990         vector.
3991         * include/std/any (_Never_valueless_alt): Define explicit
3992         specialization for any.
3993         * include/std/variant (_Never_valueless_alt): Define primary template.
3994         (__never_valueless): Use _Never_valueless_alt instead of
3995         is_trivially_copyable.
3996         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
3997         initializations to avoid try-catch overhead. Add special case for
3998         scalars produced by potentially-throwing conversions. Use
3999         _Never_valueless_alt instead of is_trivially_copyable for the
4000         remaining strong exception-safety cases.
4001         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
4002         * testsuite/20_util/variant/87431.cc: Run both test functions.
4003         * testsuite/20_util/variant/exception_safety.cc: New test.
4004         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
4005         so the variant becomes valueless.
4006
4007 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
4008
4009         PR libstdc++/85184
4010         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
4011         Remove assertions.
4012         (variant::emplace<_Tp>): Return result of emplace<N> directly.
4013
4014         * include/std/string (__hash_string_base): New class template defining
4015         operator() for hashing strings.
4016         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
4017         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
4018         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
4019         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
4020
4021 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
4022
4023         Use single-visitation in variant assignment and swap and relops.
4024         Also use indices instead of types when checking whether
4025         variants hold the same thing.
4026         * include/std/variant (__do_visit): Add a template parameter
4027         for index visitation, invoke with indices if index visitation
4028         is used.
4029         (__variant_idx_cookie): New.
4030         (__visit_with_index): Likewise.
4031         (_Copy_assign_base::operator=): Do single-visitation with
4032         an index visitor.
4033         (_Move_assign_base::operator=): Likewise.
4034         (_Extra_visit_slot_needed): Adjust.
4035         (__visit_invoke): Call with indices if it's an index visitor.
4036         (relops): Do single-visitation with an index visitor.
4037         (swap): Likewise.
4038         (__visitor_result_type): New.
4039
4040 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
4041
4042         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
4043
4044 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
4045
4046         Don't revisit a variant we are already visiting.
4047         * include/std/variant (__variant_construct_single): New.
4048         (__variant_construct): Use it.
4049         (_M_destructive_move): Likewise.
4050         (_M_destructive_copy): Likewise.
4051         (_Copy_assign_base::operator=): Adjust.
4052         (_Move_assign_base::operator=): Likewise.
4053         (swap): Likewise.
4054
4055 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
4056
4057         PR libstdc++/85965
4058         * include/bits/hashtable.h (_Hashtable): Move static assertions to
4059         destructor so they are not evaluated until the _Key type is complete.
4060         * include/bits/stl_tree.h (_Rb_tree): Likewise.
4061         * testsuite/23_containers/set/85965.cc: New test.
4062         * testsuite/23_containers/unordered_set/85965.cc: New test.
4063         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
4064         with regexp matching the corresponding _Rb_tree specialization.
4065         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
4066         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
4067         * testsuite/23_containers/set/48101_neg.cc: Likewise.
4068         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
4069         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
4070         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
4071         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
4072
4073 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4074
4075         PR libstdc++/89825
4076         Fix based on a suggestion by Antony Polukhin.
4077         * include/std/variant (__never_valueless): New.
4078         (_M_valid): Use it.
4079         (_Extra_visit_slot_needed): New.
4080         (_Multi_array): Use it.
4081         (_S_apply_all_alts): Likewise.
4082
4083 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4084
4085         PR libstdc++/89824
4086         Fix based on a suggestion by Antony Polukhin.
4087         * include/std/variant (__gen_vtable): Don't reserve an
4088         additional table slot, _Multi_array already does that.
4089
4090 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4091
4092         PR libstdc++/89816
4093         Fix based on a suggestion by Antony Polukhin.
4094         * include/std/variant (__variant_construct): Capture a pointer
4095         to the storage and visit just one variant.
4096
4097 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4098
4099         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4100         Doxygen-generated pages with unstable URL.
4101         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4102         * doc/xml/manual/extensions.xml: Likewise.
4103         * doc/xml/manual/parallel_mode.xml: Likewise.
4104         * doc/xml/manual/support.xml: Likewise.
4105
4106         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4107         avoid -Wconversion warnings.
4108
4109 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4110
4111         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4112         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4113         (allstamped): Add stamp-pstl.
4114         (install-headers): Add ptsl_builddir.
4115         * include/Makefile.in: Regenerate.
4116         * include/bits/c++config: Add pstl configuration.
4117         * include/pstl/LICENSE.txt: New file.
4118         * include/pstl/algorithm_fwd.h: New file.
4119         * include/pstl/algorithm_impl.h: New file.
4120         * include/pstl/execution_defs.h: New file.
4121         * include/pstl/execution_impl.h: New file.
4122         * include/pstl/glue_algorithm_defs.h: New file.
4123         * include/pstl/glue_algorithm_impl.h: New file.
4124         * include/pstl/glue_execution_defs.h: New file.
4125         * include/pstl/glue_memory_defs.h: New file.
4126         * include/pstl/glue_memory_impl.h: New file.
4127         * include/pstl/glue_numeric_defs.h: New file.
4128         * include/pstl/glue_numeric_impl.h: New file.
4129         * include/pstl/memory_impl.h: New file.
4130         * include/pstl/numeric_fwd.h: New file.
4131         * include/pstl/numeric_impl.h: New file.
4132         * include/pstl/parallel_backend.h: New file.
4133         * include/pstl/parallel_backend_tbb.h: New file.
4134         * include/pstl/parallel_backend_utils.h: New file.
4135         * include/pstl/parallel_impl.h: New file.
4136         * include/pstl/pstl_config.h: New file.
4137         * include/pstl/unseq_backend_simd.h: New file.
4138         * include/pstl/utils.h: New file.
4139         * include/std/algorithm: Include parallel algorithm implementations.
4140         * include/std/execution: New file.
4141         * include/std/memory: Include parallel algorithm implementations.
4142         * include/std/numeric: Include parallel algorithm implementations.
4143         * include/std/version: Add parallel algorithms feature test macro.
4144         * testsuite/util/pstl/pstl_test_config.h: New file.
4145         * testsuite/util/pstl/test_utils.h: New file.
4146         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4147         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4148         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4149         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4150         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4151         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4152         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4153         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4154         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4155         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4156         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4157         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4158         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4159         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4160         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4161         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4162         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4163         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4164         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4165         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4166         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4167         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4168         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4169         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4170         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4171         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4172         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4173         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4174         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4175         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4176         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4177         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4178         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4179         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4180         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4181         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4182         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4183         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4184         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4185         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4186         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4187         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4188         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4189         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4190         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4191         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4192         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4193         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4194         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4195         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4196         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4197         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4198         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4199         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4200         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4201         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4202         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4203         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4204         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4205         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4206         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4207         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4208         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4209         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4210         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4211         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4212         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4213         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4214         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4215         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4216         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4217         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4218         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4219         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4220         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4221         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4222         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4223         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4224         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4225         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4226         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4227         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4228         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4229         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4230         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4231         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4232         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4233         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4234         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4235         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4236         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4237         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4238         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4239         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4240         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4241         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4242         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4243         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4244         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4245         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4246         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4247         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4248         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4249         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4250         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4251         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4252
4253 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4254
4255         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4256         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4257         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4258         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4259         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4260         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4261         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4262         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4263         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4264         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4265         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4266         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4267         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4268         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4269         when the special functions IS is enabled, not for C++17.
4270         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4271         Replace with ...
4272         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4273         without checks for special functions in C++17.
4274         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4275         New test.
4276
4277         PR libstdc++/88066
4278         * include/backward/hash_map: Use <> for includes not "".
4279         * include/backward/hash_set: Likewise.
4280         * include/backward/strstream: Likewise.
4281         * include/tr1/bessel_function.tcc: Likewise.
4282         * include/tr1/exp_integral.tcc: Likewise.
4283         * include/tr1/legendre_function.tcc: Likewise.
4284         * include/tr1/modified_bessel_func.tcc: Likewise.
4285         * include/tr1/riemann_zeta.tcc: Likewise.
4286
4287 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4288
4289         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4290         of extension allocators.
4291         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4292         Document new headers in 7.2, 8.1 and 9.1 releases.
4293         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4294         * doc/html/*: Regenerate.
4295
4296 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4297
4298         PR libstdc++/89461
4299         * testsuite/lib/libstdc++.exp: Locate libatomic.
4300         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4301         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4302         libatomic options.
4303         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4304         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4305         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4306         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4307
4308 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4309
4310         PR libstdc++/89460
4311         * configure.ac: Check for sockatmark.
4312         * crossconfig.m4: Check for sockatmark.
4313         * config.h.in: Regenerate.
4314         * configure: Regenerate.
4315         * include/experimental/internet (address_v4::_S_hton): Rename
4316         overloaded functions to _S_hton_16 and _S_ntoh_16.
4317         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4318         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4319         * include/experimental/socket (basic_socket::at_mark): Check
4320         _GLIBCXX_HAVE_SOCKATMARK.
4321
4322         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4323         const variables instead of macros.
4324
4325         PR libstdc++/89629
4326         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4327         Use correct type for len_aligned.
4328         * testsuite/20_util/hash/89629.cc: New test.
4329
4330 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4331
4332         PR libstdc++/89641
4333         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4334         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4335         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4336         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4337         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4338         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4339         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4340         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4341         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4342         memory_order_seq_cst to int.
4343
4344 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4345
4346         * doc/xml/manual/using.xml: Use link element instead of xref.
4347         * doc/html/*: Regenerate.
4348
4349         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4350
4351 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4352
4353         PR libstdc++/89477
4354         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4355         parameters in deduction guides.
4356         * include/debug/multimap.h (multimap): Likewise.
4357         * include/debug/set.h (multimap): Likewise.
4358         * include/debug/multiset.h (multimap): Likewise.
4359         * include/debug/unordered_map (unordered_map): Likewise.
4360         (unordered_multimap): Likewise.
4361         * include/debug/unordered_set (unordered_set): Likewise.
4362         (unordered_multiset): Likewise.
4363
4364         PR libstdc++/89608
4365         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4366         Invalidate all iterators in case of rehash.
4367         (unordered_multimap<>::_M_check_rehashed): Likewise.
4368         * include/debug/unordered_set
4369         (unordered_set<>::_M_check_rehashed): Likewise.
4370         (unordered_multiset<>::_M_check_rehashed): Likewise.
4371         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4372
4373 2019-03-07  Andreas Schwab  <schwab@suse.de>
4374
4375         * config/abi/post/riscv64-linux-gnu: New directory.
4376         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4377
4378 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4379
4380         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4381         compile test to run. Fix typo.
4382
4383         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4384         * doc/html/*: Regenerate.
4385
4386         P0356R5 Simplified partial function application
4387         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4388         helpers for bind_front.
4389         (bind_front, __cpp_lib_bind_front): Define.
4390         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4391
4392 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4393
4394         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4395         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4396         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4397         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4398
4399 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4400
4401         PR libstdc++/86655 - std::assoc_legendre should not constrain
4402         the value of m (or x).
4403         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4404         __sph_legendre): If degree > order Don't throw, return 0.
4405         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4406         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4407         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4408         * testsuite/tr1/5_numerical_facilities/special_functions/
4409         02_assoc_legendre/pr86655.cc: New test.
4410         * testsuite/tr1/5_numerical_facilities/special_functions/
4411         22_sph_legendre/pr86655.cc: New test.
4412
4413 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4414
4415         Rewrite variant.
4416         Also PR libstdc++/85517
4417         * include/std/variant (__do_visit): New.
4418         (__variant_cast): Likewise.
4419         (__variant_cookie): Likewise.
4420         (__erased_*): Remove.
4421         (_Variant_storage::_S_vtable): Likewise.
4422         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4423         (_Variant_storage::__M_reset): Adjust.
4424         (__variant_construct): New.
4425         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4426         __variant_construct.
4427         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4428         (_Move_ctor_base::__M_destructive_copy): New.
4429         (_Move_ctor_base::__M_destructive_move): Adjust to use
4430         __variant_construct.
4431         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4432         (_Copy_assign_alias): Adjust to check both copy assignment
4433         and copy construction for triviality.
4434         (_Move_assign_base::operator=): Adjust to use __do_visit.
4435         (_Multi_array): Add support for visitors that accept and return
4436         a __variant_cookie.
4437         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4438         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4439         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4440         a __variant_cookie temporary for a variant that is valueless and..
4441         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4442         (__gen_vtable::_Array_type): Conditionally make space for
4443         the __variant_cookie visitor case.
4444         (__variant_construct_by_index): New.
4445         (get_if): Adjust to use std::addressof.
4446         (relops): Adjust to use __do_visit.
4447         (variant): Add __variant_cast and __variant_construct_by_index
4448         as friends.
4449         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4450         instead of self-destruction.
4451         (variant::swap): Adjust to use __do_visit.
4452         (visit): Reimplement in terms of __do_visit.
4453         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4454         * testsuite/20_util/variant/compile.cc: Adjust.
4455         * testsuite/20_util/variant/run.cc: Likewise.
4456
4457 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4458
4459         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4460         constant.
4461         * testsuite/experimental/feat-char8_t.cc: Likewise.
4462
4463          * include/std/type_traits [C++20] (is_bounded_array)
4464          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4465          Define.
4466          * testsuite/20_util/is_bounded_array/requirements/
4467          explicit_instantiation.cc: New test.
4468          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4469          test.
4470          * testsuite/20_util/is_bounded_array/value.cc: New test.
4471          * testsuite/20_util/is_unbounded_array/requirements/
4472          explicit_instantiation.cc: New test.
4473          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4474          * test.
4475          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4476
4477         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4478         Add constexpr.
4479         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4480
4481 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4482
4483         * include/c_compatibility/math.h [C++20] (lerp): Add using
4484         declaration.
4485         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4486         (__lerp): Define function template to implement lerp.
4487         (lerp(float, float, float), lerp(double, double, double))
4488         (lerp(long double, long double, long double)): Define for C++20.
4489         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4490         (midpoint(T, T), midpoint(T*, T*)): Define.
4491         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4492         * testsuite/26_numerics/lerp.cc: New test.
4493         * testsuite/26_numerics/midpoint/floating.cc: New test.
4494         * testsuite/26_numerics/midpoint/integral.cc: New test.
4495         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4496
4497 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4498
4499         PR libstdc++/88996 Implement P0439R0
4500         Make std::memory_order a scoped enumeration.
4501         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4502         add variables for the old enumerators.  Adjust calls.
4503         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4504         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4505
4506 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4507
4508         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4509         directive.
4510
4511         * include/std/memory_resource (polymorphic_allocator): Add default
4512         template argument for C++20.
4513         (polymorphic_allocator::allocate_bytes)
4514         (polymorphic_allocator::deallocate_bytes)
4515         (polymorphic_allocator::allocate_object)
4516         (polymorphic_allocator::deallocate_object)
4517         (polymorphic_allocator::new_object)
4518         (polymorphic_allocator::delete_object): New member functions for
4519         C++20.
4520         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4521         test.
4522
4523 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4524
4525         PR libstdc++/89562
4526         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4527         mode for mingw.
4528
4529 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4530
4531         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4532         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4533
4534         * include/std/memory (uses_allocator_construction_args): New set of
4535         overloaded functions.
4536         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4537         New functions.
4538         * include/std/memory_resource (polymorphic_allocator::construct)
4539         [__cplusplus > 201703l]: Replace all overloads with a single function
4540         using uses_allocator_construction_args.
4541         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4542         test.
4543         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4544
4545 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4546
4547         PR libstdc++/89466
4548         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4549         stylesheet directories before check for xsltproc. Try to use
4550         xmlcatalog to find local stylesheet directory before trying hardcoded
4551         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4552         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4553         use xsltproc if xmlcatalog fails to find a local stylesheet.
4554         * configure.ac: Check for xmlcatalog.
4555         * Makefile.in: Regenerate.
4556         * configure: Likewise.
4557         * doc/Makefile.in: Likewise.
4558         * include/Makefile.in: Likewise.
4559         * libsupc++/Makefile.in: Likewise.
4560         * po/Makefile.in: Likewise.
4561         * python/Makefile.in: Likewise.
4562         * src/Makefile.in: Likewise.
4563         * src/c++11/Makefile.in: Likewise.
4564         * src/c++17/Makefile.in: Likewise.
4565         * src/c++98/Makefile.in: Likewise.
4566         * src/filesystem/Makefile.in: Likewise.
4567         * testsuite/Makefile.in: Likewise.
4568
4569 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4570
4571         PR libstdc++/89477
4572         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4573         container deduction guides.
4574         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4575         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4576         parameters in deduction guides.
4577         * include/bits/stl_multimap.h (multimap): Likewise.
4578         * include/bits/stl_multiset.h (multiset): Likewise.
4579         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4580         * include/bits/stl_set.h (set): Likewise.
4581         * include/bits/stl_stack.h (stack): Likewise.
4582         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4583         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4584         constrain parameters in deduction guides.
4585         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4586         Likewise.
4587         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4588         deduction cases.
4589         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4590         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4591         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4592         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4593         Likewise.
4594         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4595         Likewise.
4596         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4597
4598         PR libstdc++/89416
4599         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4600         to class template and partial specialization using void_t.
4601         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4602
4603 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4604
4605         PR libstdc++/89416
4606         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4607         copy and move members public.
4608
4609 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4610
4611         * include/std/type_traits (__underlying_type_impl): New helper to
4612         make underlying_type SFINAE-friendly.
4613         (underlying_type): Derive from __underlying_type_impl.
4614         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4615         test.
4616
4617         PR libstdc++/89446
4618         * include/bits/char_traits.h (__constant_char_array): Check index is
4619         in range before dereferencing.
4620         (char_traits<char>::compare, char_traits<char>::find)
4621         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4622         immediately if n is zero.
4623         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4624         Remove workarounds for PR 67026.
4625         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4626         New test.
4627         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4628         New test.
4629
4630 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4631
4632         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4633         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4634
4635 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4636
4637         PR libstdc++/89402
4638         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4639         type to std::size_t and argument to type to long double.
4640
4641 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4642
4643         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4644         * config/abi/post/sparc64-linux-gnu: New directory.
4645         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4646         * config/abi/post/sparc64-linux-gnu/32: New directory.
4647         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4648
4649 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4650
4651         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4652         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4653         test.
4654
4655 2019-02-22  Tom Honermann  <tom@honermann.net>
4656
4657         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4658         printers for u8string and u8string_view.
4659
4660 2019-02-22  Tom Honermann  <tom@honermann.net>
4661
4662         * testsuite/18_support/byte/ops.cc: Validate
4663         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4664         std::to_integer<char32_t>.
4665         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4666         std::numeric_limits<char8_t>.
4667         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4668         std::numeric_limits<char8_t>::lowest().
4669         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4670         std::numeric_limits<char8_t>::max_digits10.
4671         * testsuite/18_support/type_info/fundamental.cc: Validate
4672         typeinfo for char8_t.
4673         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4674         std::from_chars with char8_t.
4675         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4676         Validate explicit instantiation of std::hash<char8_t>.
4677         * testsuite/20_util/is_integral/value.cc: Validate
4678         std::is_integral<char8_t>.
4679         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4680         Validate std::make_signed<char8_t>.
4681         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4682         Validate u8string construction from char8_t sources.
4683         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4684         std::pmr::u8string.
4685         * testsuite/21_strings/basic_string_view/operations/compare/
4686         char/70483.cc: Validate substr operations on u8string_view.
4687         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4688         the u8string_view typedef is defined.
4689         * testsuite/21_strings/char_traits/requirements/
4690         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4691         member functions.
4692         * testsuite/21_strings/char_traits/requirements/
4693         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4694         constexpr member functions.
4695         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4696         that the u8string typedef is defined.
4697         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4698         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4699         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4700         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4701         numbers.
4702         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4703         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4704         Likewise.
4705         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4706         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4707         Validate std::atomic<char8_t>::is_always_lock_free
4708         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4709         Update line numbers.
4710         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4711         Likewise.
4712         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4713         Likewise.
4714         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4715         Validate std::experimental::pmr::u8string.
4716         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4717         u8string_view typedef is defined.
4718         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4719         char32_t to the typelists.
4720
4721 2019-02-22  Tom Honermann  <tom@honermann.net>
4722
4723         * include/ext/typelist.h: Constrain a partial specialization of
4724         typelist::detail::append_ to only match chain<T1,T2>.
4725
4726 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4727
4728         PR libstdc++/89416
4729         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4730         class template with class. Replace move and copy member types with
4731         member alias templates, so they are only instantiated when needed.
4732         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4733         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4734         test for C++11/14/17 as well.
4735         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4736         test.
4737
4738 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4739
4740         PR libstdc++/89402
4741         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4742         _GLIBCXX_PURE to the alias declaration.
4743
4744 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4745
4746         * testsuite/21_strings/basic_string/literals/types.cc
4747         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4748         * testsuite/21_strings/basic_string/literals/values.cc
4749         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4750         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4751         potentially having different type.
4752         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4753         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4754         to char.
4755         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4756         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4757         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4758         string literals only using basic character set.
4759         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4760         u8 literals to char.
4761         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4762         Test ATOMIC_CHAR8_T_LOCK_FREE.
4763         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4764         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4765         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4766         * testsuite/experimental/string_view/literals/types.cc
4767         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4768         literal.
4769         * testsuite/experimental/string_view/literals/values.cc
4770         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4771
4772 2019-02-19  Tom Honermann  <tom@honermann.net>
4773
4774         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4775         from char16_32_t.cc; validates numeric_limits<char8_t>.
4776         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4777         test cloned from types.cc; validates operator""s for char8_t
4778         returns u8string.
4779         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4780         test cloned from values.cc; validates construction and comparison
4781         of u8string values.
4782         * testsuite/21_strings/basic_string/requirements/
4783         /explicit_instantiation/char8_t/1.cc: New test cloned from
4784         char16_t/1.cc; validates explicit instantiation of
4785         basic_string<char8_t>.
4786         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4787         New test cloned from types.cc; validates operator""sv for char8_t
4788         returns u8string_view.
4789         * testsuite/21_strings/basic_string_view/literals/
4790         values-char8_t.cc: New test cloned from values.cc; validates
4791         construction and comparison of u8string_view values.
4792         * testsuite/21_strings/basic_string_view/requirements/
4793         explicit_instantiation/char8_t/1.cc: New test cloned from
4794         char16_t/1.cc; validates explicit instantiation of
4795         basic_string_view<char8_t>.
4796         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4797         New test cloned from char16_t/65049.cc; validates that
4798         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4799         * testsuite/21_strings/char_traits/requirements/char8_t/
4800         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4801         that char_traits<char8_t> member typedefs are present and correct.
4802         * testsuite/21_strings/char_traits/requirements/
4803         explicit_instantiation/char8_t/1.cc: New test cloned from
4804         char16_t/1.cc; validates explicit instantiation of
4805         char_traits<char8_t>.
4806         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4807         from char16_t.cc: validates
4808         codecvt<char16_t, char8_t, mbstate_t>.
4809         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4810         from char32_t.cc: validates
4811         codecvt<char32_t, char8_t, mbstate_t>.
4812         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4813         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4814         codecvt<char32_t, char8_t, std::mbstate_t>.
4815         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4816         test cloned from string.cc; validates filesystem::path construction
4817         from char8_t input.
4818         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4819         the __cpp_lib_char8_t feature test macro is defined with the
4820         correct value.
4821         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4822         New test cloned from string.cc; validates filesystem::path
4823         construction from char8_t input.
4824         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4825         test cloned from types.cc; validates operator""sv for char8_t
4826         returns u8string_view.
4827         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4828         New test cloned from values.cc; validates construction and
4829         comparison of u8string_view values.
4830         * testsuite/experimental/string_view/requirements/
4831         explicit_instantiation/char8_t/1.cc: New test cloned from
4832         char16_t/1.cc; validates explicit instantiation of
4833         basic_string_view<char8_t>.
4834         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4835         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4836         enabled.
4837
4838 2019-02-19  Tom Honermann  <tom@honermann.net>
4839
4840         P0482R5 char8_t: Standard library support
4841         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4842         typeinfo symbols for char8_t.
4843         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4844         (GLIBCXX_3.4.26): Add symbols for specializations of
4845         numeric_limits and codecvt that involve char8_t.
4846         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4847         * include/bits/atomic_base.h: Add atomic_char8_t.
4848         * include/bits/basic_string.h: Add std::hash<u8string> and
4849         operator""s(const char8_t*, size_t).
4850         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4851         __cpp_lib_char8_t.
4852         * include/bits/char_traits.h: Add char_traits<char8_t>.
4853         * include/bits/codecvt.h: Add
4854         codecvt<char16_t, char8_t, mbstate_t>,
4855         codecvt<char32_t, char8_t, mbstate_t>,
4856         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4857         codecvt_byname<char32_t, char8_t, mbstate_t>.
4858         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4859         recognize char8_t as an integral type.
4860         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4861         char8_t.
4862         (path::u8string): Return std::u8string when char8_t support is
4863         enabled.
4864         (path::generic_u8string): Likewise.
4865         (path::_S_convert): Handle conversion from char8_t input.
4866         (path::_S_str_convert): Likewise.
4867         * include/bits/functional_hash.h: Add hash<char8_t>.
4868         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4869         char8_t.
4870         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4871         for new char8_t specializations.
4872         * include/bits/localefwd.h: Add missing declarations of
4873         codecvt<char16_t, char, mbstate_t> and
4874         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4875         codecvt<char16_t, char8_t, mbstate_t> and
4876         codecvt<char32_t, char8_t, mbstate_t>.
4877         * include/bits/postypes.h: Add u8streampos
4878         * include/bits/stringfwd.h: Add declarations of
4879         char_traits<char8_t> and u8string.
4880         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4881         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4882         Recognize char8_t.
4883         (path::u8string): Return std::u8string when char8_t support is
4884         enabled.
4885         (path::generic_u8string): Likewise.
4886         (path::_S_convert): Handle conversion from char8_t input.
4887         (path::_S_str_convert): Likewise.
4888         * include/experimental/string: Add u8string.
4889         * include/experimental/string_view: Add u8string_view,
4890         hash<experimental::u8string_view>, and
4891         operator""sv(const char8_t*, size_t).
4892         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4893         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4894         as a character type.
4895         * include/std/limits: Add numeric_limits<char8_t>.
4896         * include/std/string_view: Add u8string_view,
4897         hash<experimental::u8string_view>, and
4898         operator""sv(const char8_t*, size_t).
4899         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4900         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4901         * libsupc++/atomic_lockfree_defines.h: Define
4902         ATOMIC_CHAR8_T_LOCK_FREE.
4903         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4904         codecvt.cc and limits.cc so that char8_t specializations of
4905         numeric_limits and codecvt and emitted.
4906         * src/c++11/Makefile.in: Likewise.
4907         * src/c++11/codecvt.cc: Define members of
4908         codecvt<char16_t, char8_t, mbstate_t>,
4909         codecvt<char32_t, char8_t, mbstate_t>,
4910         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4911         codecvt_byname<char32_t, char8_t, mbstate_t>.
4912         * src/c++11/limits.cc: Define members of
4913         numeric_limits<char8_t>.
4914         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4915         locale_init.cc and localename.cc.
4916         * src/c++98/Makefile.in: Likewise.
4917         * src/c++98/locale_init.cc: Add initialization for the
4918         codecvt<char16_t, char8_t, mbstate_t> and
4919         codecvt<char32_t, char8_t, mbstate_t> facets.
4920         * src/c++98/localename.cc: Likewise.
4921         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4922
4923 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4924
4925         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4926         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4927         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4928
4929 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4930
4931         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4932         * doc/html/*: Regenerate.
4933
4934         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4935         * doc/html/*: Regenerate.
4936
4937         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4938         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4939         allocator type in is_constructible checks.
4940         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4941         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4942         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4943         problematic type from LWG 2586 discussion.
4944         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4945         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4946
4947         * configure.ac: Check for C11 timespec_get function.
4948         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4949         (openbsd): Likewise
4950         * config.h.in: Regenerate.
4951         * configure: Regenerate.
4952         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4953         std for C++17 and up.
4954
4955         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4956         * include/bits/stl_queue.h
4957         (priority_queue(const Compare&, const Container&, const Alloc&))
4958         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4959         make_heap.
4960         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4961
4962         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4963         * include/bits/stl_queue.h (queue, priority_queue): Add static
4964         assertions to enforce LWG 2566 requirement on value_type.
4965         * include/bits/stl_stack.h (stack): Likewise.
4966
4967         PR middle-end/89303
4968         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4969
4970         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4971         * include/bits/std_abs.h: Add comment about LWG 2735.
4972         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4973
4974 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4975
4976         PR libstdc++/89345
4977         * include/std/version [__cpp_impl_destroying_delete]
4978         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4979         * libsupc++/new [__cpp_impl_destroying_delete]
4980         (__cpp_lib_destroying_delete): Likewise.
4981         (destroying_delete_t, destroying_delete): Likewise, but define even
4982         when __cpp_impl_destroying_delete is not defined.
4983         * testsuite/18_support/destroying_delete.cc: New test.
4984
4985 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4986
4987         PR libstdc++/89023
4988         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4989         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4990         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4991         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4992
4993 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
4994
4995         PR libstdc++/71044
4996         * include/bits/fs_path.h (path::has_root_name)
4997         (path::has_root_directory, path::has_root_path)
4998         (path::has_relative_path, path::has_parent_path)
4999         (path::has_filename, path::has_stem, path::has_extension)
5000         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
5001         noexcept.
5002         * src/c++17/fs_path.cc (path::has_root_name)
5003         (path::has_root_directory, path::has_root_path)
5004         (path::has_relative_path, path::has_parent_path)
5005         (path::has_filename, path::_M_find_extension): Add noexcept.
5006
5007 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
5008
5009         PR libstdc++/89102 (partial)
5010         * include/std/type_traits (common_type<>): Define.
5011         (common_type<T>): Derive from common_type<T, T>.
5012         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
5013         Test zero-length template argument list.
5014         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
5015         Test additional single argument cases.
5016         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
5017         Adjust expected error.
5018
5019 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
5020
5021         PR libstdc++/89128
5022         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
5023         guides.
5024         * include/bits/stl_stack.h (stack): Likewise.
5025         * testsuite/23_containers/priority_queue/deduction.cc: New test.
5026         * testsuite/23_containers/queue/deduction.cc: New test.
5027         * testsuite/23_containers/stack/deduction.cc: New test.
5028
5029         PR libstdc++/89194
5030         * include/std/type_traits (__is_convertible_helper)
5031         (__is_convertible_helper<_From, _To, false>): Revert changes to
5032         support is_nothrow_convertible.
5033         (__is_nt_convertible_helper): New helper.
5034         (is_nothrow_convertible): Use __is_nt_convertible_helper.
5035
5036         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
5037         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
5038
5039         PR libstdc++/89130
5040         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
5041         __is_alloc_insertable_impl. Replace single type member with two
5042         members, one for each of copy and move insertable.
5043         (__is_move_insertable): New trait for internal use.
5044         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
5045         (vector::_S_nothrow_relocate(true_type)): New functions to
5046         conditionally check if __relocate_a can throw.
5047         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
5048         on __is_move_insertable.
5049         (vector::_S_do_relocate): New overloaded functions to conditionally
5050         call __relocate_a.
5051         (vector::_S_relocate): New function that dispatches to _S_do_relocate
5052         based on _S_use_relocate.
5053         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5054         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
5055         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
5056
5057         PR libstdc++/89090
5058         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
5059         parameter unnamed. Add message to static assertion.
5060         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5061         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
5062         in C++11 code.
5063
5064 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
5065
5066         PR libstdc++/87106
5067         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
5068         Rename...
5069         (__is_bitwise_relocatable): ... to this.
5070         (__relocate_a_1): Adapt.
5071         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
5072         (__is_bitwise_relocatable): ... to this.
5073
5074 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5075
5076         PR libstdc++/89117
5077         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5078         final component as well as from _M_pathname. Append the dot using
5079         operator+= instead of only to _M_pathname.
5080         (path::_M_find_extension): Reformat slightly.
5081         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5082         Add more test cases.
5083
5084 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5085
5086         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5087
5088 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5089
5090         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5091         constexpr specifiers from arg and proj.
5092
5093         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5094         __shared_ptr instantiations used by gcc4-compatible ABI.
5095
5096         * include/experimental/forward_list (experimental::erase): Qualify
5097         call to erase_if.
5098         * include/experimental/list (experimental::erase): Likewise.
5099         * include/std/forward_list (std::erase): Likewise.
5100         * include/std/list (std::erase): Likewise.
5101
5102         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5103         C++2a.
5104         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5105         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5106         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5107         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5108         * testsuite/ext/array_allocator/26875.cc: Likewise.
5109         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5110         * testsuite/util/replacement_memory_operators.h: Likewise.
5111         * testsuite/util/testsuite_allocator.h: Likewise.
5112
5113         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5114         normal mode vector, even for debug mode.
5115         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5116         Define alias template for normal mode vector.
5117
5118 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5119
5120         PR libstdc++/68737
5121         * config/locale/generic/c_locale.h (__convert_from_v)
5122         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5123         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5124         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5125         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5126
5127 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5128
5129         PR libstdc++/88840
5130         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5131         data member with static member function _S_use_relocate().
5132         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5133         (vector::_M_default_append): Use _S_use_relocate() instead of
5134         __use_relocate.
5135
5136         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5137         sign of results.
5138
5139 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5140
5141         PR libstdc++/88740
5142         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5143         write to stderr instead of using printf.
5144
5145 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5146
5147         PR libstdc++/86590
5148         * include/bits/char_traits.h (__constant_string_p,
5149         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5150         available.
5151
5152 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5153
5154         Implement C++20 P0600r1.
5155         * include/backward/hash_map: Add nodiscard attribute to empty.
5156         * include/backward/hash_set: Likewise.
5157         * backward/hashtable.h: Likewise.
5158         * include/bits/basic_string.h: Likewise.
5159         * include/bits/forward_list.h: Likewise.
5160         * include/bits/hashtable.h: Likewise.
5161         * include/bits/regex.h: Likewise.
5162         * include/bits/stl_deque.h: Likewise.
5163         * include/bits/stl_list.h: Likewise.
5164         * include/bits/stl_map.h: Likewise.
5165         * include/bits/stl_multimap.h: Likewise.
5166         * include/bits/stl_multiset.h: Likewise.
5167         * include/bits/stl_queue.h: Likewise.
5168         * include/bits/stl_set.h: Likewise.
5169         * include/bits/stl_stack.h: Likewise.
5170         * include/bits/stl_tree.h: Likewise.
5171         * include/bits/stl_vector.h: Likewise.
5172         * include/bits/unordered_map.h: Likewise.
5173         * include/bits/unordered_set.h: Likewise.
5174         * include/debug/array: Likewise.
5175         * include/experimental/any: Likewise.
5176         * include/experimental/bits/fs_path.h: Likewise.
5177         * include/experimental/internet: Likewise.
5178         * include/experimental/string_view: Likewise.
5179         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5180         Likewise.
5181         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5182         Likewise.
5183         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5184         Likewise.
5185         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5186         Likewise.
5187         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5188         Likewise.
5189         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5190         Likewise.
5191         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5192         Likewise.
5193         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5194         Likewise.
5195         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5196         info_fn_imps.hpp: Likewise.
5197         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5198         left_child_next_sibling_heap_.hpp: Likewise.
5199         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5200         Likewise.
5201         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5202         Likewise.
5203         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5204         Likewise.
5205         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5206         Likewise.
5207         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5208         Likewise.
5209         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5210         Likewise.
5211         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5212         Likewise.
5213         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5214         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5215         * include/ext/rope: Likewise.
5216         * include/ext/slist: Likewise.
5217         * include/ext/vstring.h: Likewise.
5218         * include/profile/array: Likewise.
5219         * include/std/array: Likewise.
5220         * include/tr1/array: Likewise.
5221         * include/tr1/hashtable.h: Likewise.
5222         * include/tr1/regex: Likewise.
5223         * include/tr2/dynamic_bitset: Likewise.
5224         * include/bits/alloc_traits.h: Add nodiscard attribute to
5225         allocate.
5226         * include/experimental/memory_resource: Likewise.
5227         * include/ext/alloc_traits.h: Likewise.
5228         * include/ext/array_allocator.h: Likewise.
5229         * include/ext/bitmap_allocator.h: Likewise.
5230         * include/ext/debug_allocator.h: Likewise.
5231         * include/ext/extptr_allocator.h: Likewise.
5232         * include/ext/mt_allocator.h: Likewise.
5233         * include/ext/new_allocator.h: Likewise.
5234         * include/ext/pool_allocator.h: Likewise.
5235         * include/ext/throw_allocator.h: Likewise.
5236         * include/std/scoped_allocator: Likewise.
5237         * libsupc++/eh_alloc.cc: Likewise.
5238         * include/std/future: Add nodiscard attribute to async.
5239         * libsupc++/new: Add nodiscard attribute to new.
5240
5241 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5242
5243         PR libstdc++/87514
5244         PR libstdc++/87520
5245         PR libstdc++/88782
5246         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5247         * include/bits/shared_ptr.h
5248         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5249         (allocate_shared): Change to use new tag type.
5250         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5251         Declare new member function.
5252         (_Sp_alloc_shared_tag): Define new type.
5253         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5254         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5255         _Sp_make_shared_tag::_S_eq to check type_info.
5256         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5257         Constrain to prevent being called with _Sp_alloc_shared_tag.
5258         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5259         Replace constructor with ...
5260         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5261         reference parameter so address of the new object can be returned to
5262         the caller. Obtain the allocator from the tag type.
5263         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5264         constructor with ...
5265         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5266         to the __shared_count constructor.
5267         (__allocate_shared): Change to use new tag type.
5268         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5269
5270 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5271
5272         * src/c++17/fs_ops.cc
5273         (equivalent(const path&, const path&, error_code&))
5274         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5275         compare files instead of relying on incomplete info returned by stat.
5276
5277         PR libstdc++/88884
5278         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5279         if the path is already absolute.
5280         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5281         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5282
5283         PR libstdc++/88881
5284         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5285         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5286         of filesystem::exists.
5287         (create_directories(const path&, error_code&)): Add assertions.
5288         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5289         Add workaround for bug in _wstat for paths with trailing slash.
5290         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5291         for expected behaviour on mingw.
5292         * testsuite/experimental/filesystem/operations/create_directories.cc:
5293         Likewise.
5294         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5295         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5296         not test permissions on mingw targets.
5297
5298 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5299
5300         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5301         constructors and open members taking wide strings. Fix patterns for
5302         filesystem::path members to match wstring_view parameters. Add
5303         exports for shared_ptr members used by directory iterators.
5304         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5305         error code parameter if the file doesn't exist.
5306         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5307         Likewise.
5308         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5309         values for mingw targets, where "/" is not an absolute path. Do not
5310         test symlinks on mingw targets.
5311         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5312         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5313         on mingw targets.
5314         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5315         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5316         that each component of the path is created.
5317         * testsuite/experimental/filesystem/operations/create_directories.cc:
5318         Likewise.
5319         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5320         permissions on mingw targets.
5321         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5322         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5323         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5324         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5325         mingw targets.
5326         * testsuite/experimental/filesystem/operations/permissions.cc:
5327         Likewise.
5328         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5329         symlinks or permissions on mingw targets.
5330         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5331         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5332         symlinks on mingw targets.
5333         * testsuite/experimental/filesystem/operations/remove_all.cc:
5334         Likewise.
5335         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5336         permissions on mingw targets.
5337         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5338         test symlinks on mingw targets.
5339         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5340         for mingw targets.
5341
5342 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5343
5344         PR libstdc++/88738
5345         Warn about unused comparisons of shared_ptr/unique_ptr
5346         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5347         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5348         <, <=, >, >= for shared_ptr.
5349         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5350
5351 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5352
5353         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5354         as 201611L, because P0497R0 changes are supported.
5355         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5356
5357         * include/bits/erase_if.h [__cplusplus > 201703L]
5358         (__cpp_lib_erase_if): Only define for C++2a.
5359         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5360         (__cpp_lib_null_iterators): Define.
5361         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5362         (__cpp_lib_null_iterators): Define.
5363         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5364
5365         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5366         status.
5367         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5368         Define.
5369         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5370         changes are supported.
5371         * include/std/optional (__cpp_lib_optional): Likewise.
5372         * include/std/variant (__cpp_lib_variant): Likewise.
5373         * include/std/version [!__STRICT_ANSI__]
5374         (__cpp_lib_uncaught_exceptions): Define as long integer.
5375         [__cplusplus >= 201703L] (__cpp_lib_any)
5376         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5377         (__cpp_lib_variant): Define for C++17.
5378         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5379         as long integer.
5380         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5381         integer.
5382
5383         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5384
5385 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5386
5387         PR libstdc++/88811
5388         PR libstdc++/83306
5389         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5390         before second path.
5391         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5392         test.
5393
5394 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5395
5396         * doc/xml/manual/intro.xml: Include new section.
5397         * doc/xml/manual/status_cxx2017.xml: Document more
5398         implementation-defined properties of the library.
5399         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5400         * doc/html/*: Regenerate.
5401
5402         * include/bits/refwrap.h [__cplusplus > 201703L]
5403         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5404         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5405         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5406         for C++2a.
5407         (reference_wrapper::operator()): Add static assertion.
5408         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5409
5410         * include/std/chrono (duration_values::zero(), duration_values::min())
5411         (duration_values::max()): Add noexcept.
5412         (duration::zero(), duration::min(), duration::max()): Likewise.
5413         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5414         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5415         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5416
5417         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5418
5419 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5420
5421         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5422         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5423
5424 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5425
5426         PR libstdc++/88802
5427         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5428         specialization for C++17 (P0513R0, LWG 2817).
5429         * testsuite/20_util/hash/nullptr.cc: New test.
5430
5431         PR libstdc++/88125
5432         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5433         pattern for std::basic_stringbuf::str().
5434
5435         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5436         basic_ostream::operator<< patterns.
5437
5438 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5439
5440         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5441         test failures on targets with 32-bit time_t.
5442
5443         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5444         * include/std/deque: Likewise.
5445         * include/std/forward_list: Likewise.
5446         * include/std/list: Likewise.
5447         * include/std/string: Likewise.
5448         * include/std/vector: Likewise.
5449         * include/std/version: Likewise.
5450         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5451         * testsuite/23_containers/deque/erasure.cc: Likewise.
5452         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5453         * testsuite/23_containers/list/erasure.cc: Likewise.
5454         * testsuite/23_containers/map/erasure.cc: Likewise.
5455         * testsuite/23_containers/set/erasure.cc: Likewise.
5456         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5457         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5458         * testsuite/23_containers/vector/erasure.cc: Likewise.
5459
5460         * include/experimental/internet [AI_NUMERICSERV]
5461         (resolver_base::numeric_service): Define conditionally.
5462         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5463         conditionally.
5464         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5465         Likewise.
5466
5467 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5468             Jonathan Wakely  <jwakely@redhat.com>
5469
5470         Implement LWG 2221
5471         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5472         (GLIBCXX_3.4.26): Add new exports.
5473         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5474         correct list of sources.
5475         * include/Makefile.in: Regenerate.
5476         * include/std/ostream (operator<<(nullptr_t)): New member function.
5477         * src/c++17/ostream-inst.cc: New file.
5478         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5479         test.
5480
5481 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5482
5483         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5484         of the source file containing the caller.
5485         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5486         directories created by test.
5487         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5488         Likewise.
5489         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5490         Likewise.
5491         * testsuite/experimental/filesystem/iterators/
5492         recursive_directory_iterator.cc: Likewise.
5493
5494 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5495
5496         PR tree-optimization/88775
5497         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5498         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5499         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5500         instead of __builtin_constant_p if available.  Don't bother with
5501         the pointer comparison in C++11 and earlier.
5502
5503 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5504
5505         PR other/16615
5506
5507         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5508         with "cannot".
5509
5510 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5511
5512         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5513         for filesystem::path. Give variables more distinctive names.
5514
5515         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5516         member function to perform non-trivial assignment.
5517         (_Optional_payload_base::_M_move_assign): Likewise.
5518         (_Optional_payload<T, true, false, true>::operator=)
5519         (_Optional_payload<T, true, true, false>::operator=)
5520         (_Optional_payload<T, true, false, false>::operator=): Call
5521         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5522
5523         PR libstdc++/88204
5524         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5525         test std::complex<long double> if long double format is IBM128.
5526         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5527         Likewise.
5528
5529 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5530
5531         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5532         for old std::unique_ptr layout.
5533         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5534         to become valueless. Add filesystem::path tests.
5535
5536         PR libstdc++/87855
5537         * include/std/optional (_Optional_payload_base): New class template
5538         for common code hoisted from _Optional_payload specializations. Use
5539         a template for the union, to allow a partial specialization for
5540         types with non-trivial destructors. Add constructors for in-place
5541         initialization to the union.
5542         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5543         to perform non-trivial copy construction, instead of relying on
5544         non-standard copy elision in a delegating constructor.
5545         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5546         non-trivial move construction.
5547         (_Optional_payload): Derive from _Optional_payload_base and use it
5548         for everything except the non-trivial assignment operators, which are
5549         defined as needed.
5550         (_Optional_payload<false, C, M>): Derive from the specialization
5551         _Optional_payload<true, false, false> and add a destructor.
5552         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5553         Forward to corresponding members of _Optional_payload.
5554         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5555         Hoist common members from _Optional_base.
5556         (_Optional_base): Make all members and base class public.
5557         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5558         _Optional_base_impl.
5559         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5560         support for new std::optional layout.
5561         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5562
5563         PR libstdc++/88066
5564         * include/bits/locale_conv.h: Use <> for includes not "".
5565         * include/ext/random: Likewise.
5566         * include/ext/vstring.h: Likewise.
5567
5568 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5569
5570         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5571         (GLIBCXX_3.4.21): Likewise.
5572
5573 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5574
5575         PR libstdc++/88749
5576         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5577         to match the one that controls whether utimbuf and utime are declared.
5578
5579 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5580
5581         PR libstdc++/87787
5582         * include/bits/char_traits.h (char_traits::move): Do not pass null
5583         pointers to memmove.
5584         * include/bits/locale_facets.h
5585         (ctype<char>::widen(const char*, const char*, char*)): Do not
5586         pass null pointers to memcpy.
5587         (ctype<char>::narrow(const char*, const char*, char, char*)):
5588         Likewise.
5589         (ctype<char>::do_widen(const char*, const char*, char*)):
5590         Likewise.
5591         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5592         Likewise.
5593
5594         * doc/xml/manual/spine.xml: Update copyright years.
5595         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5596         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5597         for C++17 filesystem library.
5598         * doc/html/*: Regenerate.
5599
5600         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5601         * config.h.in: Regenerate.
5602         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5603         alphabetically and add missing entries for copy_symlink,
5604         hard_link_count, rename, and resize_file.
5605         * configure: Regenerate.
5606         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5607         used unconditionally.
5608         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5609         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5610         supports truncating to zero length.
5611         * testsuite/27_io/filesystem/operations/all.cc: New test.
5612         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5613
5614 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5615
5616         PR libstdc++/86756
5617         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5618         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5619         * config.h.in: Regenerate.
5620         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5621         remaining std::filesystem types and functions.
5622         * configure: Regenerate.
5623         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5624         * src/c++17/Makefile.in: Regenerate.
5625         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5626         here, and change name of included file.
5627         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5628         here, and change name of included file.
5629         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5630         path to dir-common.h.
5631         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5632         path to ops-common.h. Disable -Wunused-parameter warnings.
5633         (internal_file_clock): Define unconditionally.
5634         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5635         define.
5636         (do_copy_file, do_space): Move definitions to ops.common.h.
5637         (copy, file_size, hard_link_count, last_write_time, space): Only
5638         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5639         report an error.
5640         (last_write_time, read_symlink): Remove unused attributes from
5641         parameters.
5642         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5643         * src/filesystem/Makefile.in: Regenerate.
5644         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5645         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5646         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5647         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5648         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5649         dummy types and functions instead of using #error.
5650         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5651         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5652         in terms of stat.
5653         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5654         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5655         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5656         to account for new namespace.
5657         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5658         -lstdc++fs from dg-options.
5659         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5660         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5661         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5662         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5663         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5664         Likewise.
5665         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5666         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5667         Likewise.
5668         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5669         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5670         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5671         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5672         * testsuite/27_io/filesystem/operations/create_directories.cc:
5673         Likewise.
5674         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5675         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5676         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5677         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5678         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5679         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5680         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5681         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5682         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5683         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5684         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5685         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5686         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5687         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5688         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5689         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5690         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5691         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5692         Likewise.
5693         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5694
5695
5696         PR libstdc++/86756
5697         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5698         typeinfo and vtables less greedy.
5699         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5700         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5701         * src/c++17/Makefile.in: Regenerate.
5702         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5703         here, and change name of included file.
5704         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5705         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5706         from sources.
5707         * src/filesystem/Makefile.in: Regenerate.
5708         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5709         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5710         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5711         from dg-options and remove dg-require-filesystem-ts.
5712         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5713         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5714         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5715         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5716         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5717         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5718         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5719         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5720         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5721         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5722         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5723         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5724         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5725         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5726         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5727         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5728         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5729         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5730         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5731         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5732         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5733         Likewise.
5734         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5735         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5736         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5737         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5738         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5739         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5740         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5741         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5742         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5743         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5744         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5745         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5746         Likewise.
5747         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5748         Likewise.
5749         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5750         Likewise.
5751         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5752         Likewise.
5753         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5754         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5755         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5756         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5757         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5758         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5759         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5760         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5761         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5762         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5763         Likewise.
5764         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5765         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5766         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5767         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5768         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5769
5770         PR libstdc++/87431
5771         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5772         Check is_trivially_copyable instead of is_scalar.
5773         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5774         contained value can throw and its type is trivially copyable then
5775         construct into a temporary variant and move from it, to provide the
5776         strong exception safety guarantee.
5777         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5778         Likewise.
5779         * testsuite/20_util/variant/87431.cc: New test.
5780         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5781         conversion causes valueless state.
5782
5783         PR libstdc++/88607
5784         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5785         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5786         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5787         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5788         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5789
5790 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5791
5792         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5793         (file_time_type): Redefine in terms of __file_clock.
5794         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5795         overflow.
5796         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5797         internal linkage.
5798         (internal_file_lock): New helper type for accessing __file_clock.
5799         (do_copy_file): Use internal_file_lock to convert system time to
5800         file_time_type.
5801         (last_write_time(const path&, error_code&)): Likewise.
5802         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5803
5804 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5805
5806         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5807         for const member functions of std::basic_string.
5808         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5809         in C++17.
5810         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5811         Make non-standard constructor private.
5812         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5813         Likewise.
5814         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5815         explicit instantiations for C++17 as well as earlier dialects.
5816         * src/c++17/Makefile.am: Add new source files.
5817         * src/c++17/Makefile.in: Regenerate.
5818         * src/c++17/cow-string-inst.cc: New file defining explicit
5819         instantiations for basic_string member functions added in C++17.
5820         * src/c++17/string-inst.cc: Likewise.
5821
5822         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5823         copy/move constructors for old std::basic_string.
5824         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5825         (basic_string::reference, basic_string::const_reference): Define
5826         as plain references for C++11 and later.
5827         (basic_string::basic_string()): Put constructor body outside
5828         preprocessor conditional groups.
5829         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5830         instead of copying it.
5831         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5832         Define.
5833         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5834         Define.
5835         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5836         cases for old basic_string.
5837         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5838         allocator-extended constructors unconditionally. Add extra members to
5839         allocator type when using old string ABI.
5840         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5841         for old string ABI.
5842         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5843
5844         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5845         -fno-inline added to test flags.
5846
5847         * testsuite/21_strings/basic_string/requirements/
5848         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5849
5850         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5851         assertion failures with old std::string ABI.
5852
5853         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5854         with ...
5855         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5856         functions that will only erase elements at the end.
5857         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5858         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5859         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5860         of erase(p, end()).
5861         (path::_List::pop_back()): Define.
5862         (path::_List::_M_erase_from(const_iterator)): Define.
5863         (path::operator/=(const path&)): Use pop_back to remove last component
5864         and _M_erase_from to remove multiple components.
5865         (path::_M_append(basic_string_view<value_type>)): Likewise.
5866         (path::operator+=(const path&)): Likewise.
5867         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5868         (path::remove_filename()): Likewise.
5869         (path::lexically_normal()): Use _List::_Impl iterators instead of
5870         path::iterator. Use pop_back to remove components from the end. Clear
5871         trailing filename, instead of using erase(const_iterator) to remove
5872         a non-final component.
5873         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5874         additional cases.
5875         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5876
5877         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5878         incorrect treatment of empty filename after trailing slash.
5879         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5880
5881         * testsuite/21_strings/basic_string/modifiers/assign/char/
5882         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5883         to test flags.
5884         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5885         move_assign_optim.cc: Likewise.
5886
5887 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5888             Jakub Jelinek  <jakub@redhat.com>
5889
5890         PR libstdc++/88607
5891         * include/experimental/memory: Replace UTF-8 quote characters.
5892         * include/std/future: Replace UTF-8 "em dash" characters.
5893
5894 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5895
5896         PR libstdc++/88607
5897         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5898         * include/debug/forward_list: Likewise.
5899         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5900         character.
5901         * include/experimental/chrono: Likewise.
5902         * include/experimental/functional: Likewise.
5903         * include/experimental/ratio: Likewise.
5904         * include/experimental/system_error: Likewise.
5905         * include/experimental/tuple: Likewise.
5906         * include/experimental/type_traits: Likewise.
5907         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5908         * include/parallel/multiseq_selection.h: Likewise.
5909
5910         PR libstdc++/88681
5911         * config/abi/pre/gnu.ver: Add missing exports.
5912         * testsuite/22_locale/collate_byname/88681.cc: New test.
5913         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5914         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5915
5916 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5917
5918         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5919         initializer_list<value_type> and from input iterator ranges.
5920         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5921
5922         * testsuite/experimental/string_view/element_access/char/empty.cc:
5923         Fix year range in copyright header.
5924
5925 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5926
5927         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5928         Fix year range in copyright header.
5929
5930 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5931
5932         Update copyright years.
5933 \f
5934 Copyright (C) 2019 Free Software Foundation, Inc.
5935
5936 Copying and distribution of this file, with or without modification,
5937 are permitted in any medium without royalty provided the copyright
5938 notice and this notice are preserved.