libstdc++-v3/ChangeLog

   1 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/util/testsuite_abi.h: Restore use of tr1/unordered_map
   4         when compiled as C++98.
   5
   6         * include/bits/memoryfwd.h (uses_allocator): Do not declare for C++98.
   7         * testsuite/17_intro/names.cc: Check uses_allocator in C++98.
   8
   9         * include/bits/alloc_traits.h
  10         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
  11         (allocator_traits<allocator<T>>::construct): Perform placement new
  12         directly for C++20, instead of calling allocator<T>::construct.
  13         (allocator_traits<allocator<T>>::destroy): Call destructor directly
  14         for C++20, instead of calling allocator<T>::destroy.
  15         (allocator_traits<allocator<T>>::max_size): Return value directly
  16         for C++20, instead of calling std::allocator<T>::max_size().
  17         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
  18         define for C++17 and up.
  19         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
  20         for C++17 and up, instead of tag dispatching.
  21         * include/bits/allocator.h (allocator<void>): Remove for C++20.
  22         (allocator::pointer, allocator::const_pointer, allocator::reference)
  23         (allocator::const_reference, allocator::rebind): Remove for C++20.
  24         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
  25         rebind allocator.
  26         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
  27         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
  28         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
  29         (malloc_allocator::pointer, malloc_allocator::const_pointer)
  30         (malloc_allocator::reference, malloc_allocator::const_reference)
  31         (malloc_allocator::rebind, malloc_allocator::max_size)
  32         (malloc_allocator::construct, malloc_allocator::destroy): Do not
  33         define for C++20.
  34         (malloc_allocator::_M_max_size): Define new function.
  35         * include/ext/new_allocator.h (new_allocator::~new_allocator)
  36         (new_allocator::pointer, new_allocator::const_pointer)
  37         (new_allocator::reference, new_allocator::const_reference)
  38         (new_allocator::rebind, new_allocator::max_size)
  39         (new_allocator::construct, new_allocator::destroy): Do not
  40         define for C++20.
  41         (new_allocator::_M_max_size): Define new function.
  42         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
  43         __alloc_traits to rebind allocator.
  44         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
  45         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
  46         to construct character.
  47         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
  48         allocator.
  49         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
  50         Use __alloc_traits.
  51         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
  52         members of std::allocator, use __alloc_traits members instead.
  53         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
  54         * include/ext/vstring_util.h (__vstring_utility): Likewise.
  55         * include/std/memory: Include <bits/alloc_traits.h>.
  56         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
  57         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
  58         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
  59         for pointer, const_pointer, reference, const_reference or rebind in
  60         C++20.
  61         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
  62         * testsuite/23_containers/deque/capacity/29134.cc: Use
  63         __gnu_test::max_size.
  64         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
  65         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
  66         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
  67         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
  68         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
  69         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
  70         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
  71         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
  72         test for C++20.
  73         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
  74         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
  75         * testsuite/util/replacement_memory_operators.h: Do not assume
  76         Alloc::pointer exists.
  77         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
  78         helper to call max_size for any allocator.
  79
  80 2019-10-22  Andreas Schwab  <schwab@suse.de>
  81
  82         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
  83
  84 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
  85
  86         PR libstdc++/92143
  87         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
  88         to at least sizeof(void*).
  89
  90         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
  91         logic from std::less::operator() to remove the dependency on it.
  92
  93 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
  94
  95         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
  96
  97         * include/Makefile.am: Add new header.
  98         * include/Makefile.in: Regenerate.
  99         * include/bits/range_cmp.h: New header for C++20 function objects.
 100         * include/std/functional: Include new header.
 101         * testsuite/20_util/function_objects/identity/1.cc: New test.
 102         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
 103         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
 104         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
 105         test.
 106         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
 107         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
 108         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
 109         test.
 110
 111         PR libstdc++/92124
 112         * include/bits/forward_list.h
 113         (_M_move_assign(forward_list&&, false_type)): Do not use
 114         __make_move_if_noexcept, instead move unconditionally.
 115         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
 116         Likewise.
 117         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
 118         Likewise.
 119         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
 120         Likewise.
 121         * testsuite/23_containers/vector/92124.cc: New test.
 122
 123 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
 124
 125         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
 126         one of __is_same_as or __is_same when available.
 127         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
 128         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
 129         Use new macro instead of __is_same_as.
 130         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
 131         specialization.
 132         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
 133         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
 134
 135 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
 136
 137         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
 138         entry with <unknown constness>. Replace state_names <unknown> entry with
 139         <unknown state>.
 140
 141 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
 142
 143         * include/Makefile.am: Add new header.
 144         * include/Makefile.in: Regenerate.
 145         * include/precompiled/stdc++.h: Include <concepts>.
 146         * include/std/concepts: New header for C++20.
 147         * include/std/version (__cpp_lib_concepts): Define.
 148         * scripts/create_testsuite_files: Look for test files in new std
 149         directory.
 150         * testsuite/libstdc++-dg/conformance.exp: Likewise.
 151         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
 152         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
 153         test.
 154         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
 155         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
 156         test.
 157         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 158         floating_point.cc: New test.
 159         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 160         New test.
 161         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 162         signed_integral.cc: New test.
 163         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 164         unsigned_integral.cc: New test.
 165         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
 166         test.
 167         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
 168         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
 169         test.
 170         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
 171         New test.
 172         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
 173         New test.
 174         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
 175         New test.
 176         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 177         1.cc: New test.
 178         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 179         New test.
 180         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 181         New test.
 182         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 183         New test.
 184         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 185         New test.
 186         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 187         New test.
 188         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 189         New test.
 190         * testsuite/std/concepts/concepts.lang/concept.swappable/
 191         swappable_with.cc: New test.
 192         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 193         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 194         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 195         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 196
 197         * include/std/type_traits (is_same): Replace partial specialization
 198         by using __is_same_as built-in in primary template.
 199         (is_same_v): Use __is_same_as built-in instead of instantiating the
 200         is_same trait.
 201
 202         PR libstdc++/92059
 203         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 204         special member functions as defaulted. Add noexcept to most members.
 205         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 206         Mask off unwanted bits in the __val parameter. Avoid undefined left
 207         shifts.
 208         (__dynamic_bitset_base::_M_assign): Remove.
 209         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 210         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 211         block_type has lower rank than int.
 212         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 213         in return types and parameter types.
 214         (dynamic_bitset::_M_Nb): Add default member initializer.
 215         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 216         defaulted.
 217         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 218         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 219         defaulted.
 220         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 221         Define without using swap, to propagate allocator correctly.
 222         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 223         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 224         casts to avoid unwanted integer promotions.
 225         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 226         add default template arguments and default argument to simplify usage.
 227         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 228         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 229         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 230         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 231         Adjust template parameters to match declaration.
 232         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 233         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 234         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 235         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 236         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 237
 238         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 239         warnings.
 240
 241 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 242
 243         PR libstdc++/91057
 244         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 245         (find_ldbl_sync_facet): Fix parameter type and missing return.
 246
 247 2019-10-09  Marek Polacek  <polacek@redhat.com>
 248
 249         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 250         PR c++/69531 - DR 1307: Differently bounded array parameters.
 251         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 252         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 253         post-P0388R4 behavior.
 254
 255 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 256
 257         PR libstdc++/91057
 258         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 259         compare-exchange or double-checked lock to ensure only one thread sets
 260         the _M_index variable.
 261         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 262         facets that share another facet's ID.
 263         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 264
 265         PR libstdc++/78552
 266         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 267         locale object for every call.
 268         (locale::_S_initialize_once()): Construct C locale here.
 269
 270 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 271
 272         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 273         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 274         * doc/Makefile.in: Regenerate.
 275         * doc/xml/manual/documentation_hacking.xml: Document new target.
 276         * doc/html/*: Regenerate.
 277
 278         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 279         * doc/html/*: Regenerate.
 280
 281 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 282
 283         * include/bits/stl_algo.h
 284         (__copy_n_a(_IIte, _Size, _OIte)): New.
 285         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 286         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 287         latter.
 288         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 289         std::__copy_n_a friend.
 290         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 291         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 292         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 293         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 294
 295         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 296         for C++11.
 297         (_RequireInputIte): Likewise and use __enable_if_t.
 298         * include/std/numeric
 299         (__is_random_access_iter): Use __iterator_category_t.
 300
 301         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 302         debug checks.
 303         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 304         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 305
 306 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 307
 308         * include/debug/forward_list
 309         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 310         distance when not empty.
 311         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 312         Likewise.
 313         * include/debug/helper_functions.h (__dp_sign_max_size): New
 314         _Distance_precision enum entry.
 315         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 316         __false_type)): Adapt.
 317         * include/debug/safe_iterator.tcc
 318         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 319         distance computation.
 320
 321 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 322
 323         PR libstdc++/81091
 324         PR libstdc++/91947
 325         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 326         * config.h.in: Regenerate:
 327         * configure: Regenerate:
 328         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 329         target to generate config header for filesystem library.
 330         (${host_builddir}/c++config.h): Rename macros for large file support.
 331         * include/Makefile.in: Regenerate.
 332         * src/c++17/fs_dir.cc: Include new config header.
 333         * src/c++17/fs_ops.cc: Likewise.
 334         (filesystem::file_size): Use uintmax_t for size.
 335         * src/filesystem/dir.cc: Include new config header.
 336         * src/filesystem/ops.cc: Likewise.
 337         (experimental::filesystem::file_size): Use uintmax_t for size.
 338
 339         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 340         std::tr1::unordered_map.
 341         * testsuite/util/testsuite_allocator.h: Likewise.
 342
 343         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 344
 345         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 346         __gnu_cxx::__alloc_traits for allocator construct function.
 347         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 348
 349         * include/precompiled/stdc++.h: Include <span> for C++20.
 350         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 351
 352 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 353
 354         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 355
 356 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 357
 358         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 359
 360         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 361         recent standards.
 362         * doc/html/*: Regenerate.
 363
 364 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 365
 366         * include/experimental/algorithm (experimental::sample): Qualify call
 367         to __sample correctly.
 368         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 369         for algorithms that don't have parallel implementations.
 370
 371         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 372         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 373         constant evaluated.
 374         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 375         Add _GLIBCXX20_CONSTEXPR.
 376
 377         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 378         parallel mode.
 379         * testsuite/20_util/hash/84998.cc: Likewise.
 380         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 381         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 382         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 383         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 384         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 385         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 386         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 387         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 388         Likewise.
 389         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 390         Likewise.
 391         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 392         Likewise.
 393         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 394         Likewise.
 395         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 396         Likewise.
 397         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 398         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 399         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 400         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 401         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 402         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 403         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 404
 405         * include/parallel/algo.h: Replace non-reserved names.
 406         * include/parallel/multiway_merge.h: Likewise.
 407         * include/parallel/multiway_mergesort.h: Likewise.
 408         * include/parallel/numericfwd.h: Likewise.
 409         * testsuite/17_intro/names.cc: Add RAI to test macros.
 410
 411 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 412
 413         * include/debug/array: Add C++20 constexpr to comparison operators.
 414         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 415         dg-error line numbers.
 416         * testsuite/23_containers/array/tuple_interface/
 417         tuple_element_debug_neg.cc: Likewise.
 418
 419 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 420
 421         * include/experimental/internet: Include netinet/in.h if we have
 422         _GLIBCXX_HAVE_NETINET_IN_H defined.
 423
 424         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 425         FreeBSD warning about lower advertised precision of tgammal.
 426         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 427         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 428         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 429         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 430         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 431         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 432         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 433         * testsuite/tr1/5_numerical_facilities/special_functions/
 434         08_cyl_bessel_i/check_nan.cc: Likewise.
 435         * testsuite/tr1/5_numerical_facilities/special_functions/
 436         09_cyl_bessel_j/check_nan.cc: Likewise.
 437         * testuite/tr1/5_numerical_facilities/special_functions/
 438         10_cyl_bessel_k/check_nan.cc: Likewise.
 439         * testsuite/tr1/5_numerical_facilities/special_functions/
 440         11_cyl_neumann/check_nan.cc: Likewise.
 441         * testsuite/tr1/5_numerical_facilities/special_functions/
 442         21_sph_bessel/check_nan.cc: Likewise.
 443         * testsuite/tr1/5_numerical_facilities/special_functions/
 444         23_sph_neumann/check_nan.cc: Likewise.
 445
 446 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 447
 448         * include/std/span (span(element_type(&)[N]))
 449         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 450         Deduce array element type to allow safe const conversions (LWG 3255).
 451         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 452         remove_cv_t on arguments to __is_std_span and __is_std_array.
 453         * testsuite/23_containers/span/lwg3255.cc: New test.
 454
 455         PR libstdc++/77936
 456         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 457
 458 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 459
 460         * include/bits/stl_algo.h (merge): Fix documentation.
 461         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 462         (__check_sorted): Likewise and remove nested irreflexive check.
 463         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 464         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 465         (_Irreflexive_checker::_S_is_valid): Likewise.
 466         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 467         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 468         (__valid_range_aux): Add C++20 constexpr.
 469         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 470         Likewise and add std::is_constant_evaluated check.
 471         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 472         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 473         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 474         use latter.
 475         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 476         __builtin_is_contant_evaludated check..
 477         (__can_advance, __base): Add constexpr.
 478         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 479         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 480         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 481         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 482         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 483         std::less.
 484         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 485         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 486         lambda to be irreflexive.
 487
 488 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 489
 490         * configure: Regenerate.
 491
 492 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 493
 494         PR libstdc++/91910
 495         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 496         atomically and lock the mutex before accessing the sequence.
 497         (_Safe_local_iterator_base::_M_detach()): Likewise.
 498         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 499
 500 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 501
 502         * include/debug/array (to_array): Define for debug mode.
 503
 504         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
 505         piecewise construction constructor, assignment operators, and swap.
 506         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
 507         Add _GLIBCXX20_CONSTEXPR.
 508         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
 509         * testsuite/20_util/pair/constexpr_assign.cc: New test.
 510         * testsuite/20_util/pair/constexpr_swap.cc: New test.
 511
 512         * include/experimental/internet (operator==, operator<): Fix loop
 513         condition to avoid reading past the end of the array.
 514
 515         * include/std/array: Remove references to profile mode.
 516         * include/std/bitset: Likewise.
 517         * include/std/deque: Likewise.
 518         * include/std/forward_list: Likewise.
 519         * include/std/list: Likewise.
 520         * include/std/map: Likewise.
 521         * include/std/set: Likewise.
 522         * include/std/unordered_map: Likewise.
 523         * include/std/unordered_set: Likewise.
 524         * include/std/vector: Likewise.
 525         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
 526         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
 527
 528 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
 529
 530         * include/bits/regex.h
 531         (basic_regex::assign(const C*, size_t, flag_type)): Add default
 532         argument (LWG 3296).
 533         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
 534         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
 535
 536 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
 537
 538         * include/std/variant (variant::index()): Remove impossible case.
 539
 540         PR libstdc++/91871
 541         * testsuite/util/testsuite_hooks.h
 542         (conversion::iterator_to_const_iterator()): Do not return an invalid
 543         iterator. Test direct-initialization and direct-list-initialization
 544         as well as implicit conversion.
 545
 546 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
 547
 548         PR libstdc++/91788 (partial)
 549         * include/std/variant (variant::index()): Improve codegen for cases
 550         where conversion to size_t already works correctly.
 551
 552 2019-09-23  Andreas Schwab  <schwab@suse.de>
 553
 554         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 555
 556 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
 557
 558         PR libstdc++/91748
 559         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
 560         case.
 561         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
 562         access iterators.
 563
 564 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
 565
 566         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
 567         Fix syntax error.
 568
 569         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
 570         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
 571         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
 572         for C++2a and up.
 573
 574 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 575
 576         * include/std/type_traits (__do_common_type_impl): Implement
 577         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
 578         (basic_common_reference, common_reference, common_reference_t): Define
 579         for C++20.
 580         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
 581         test.
 582         * testsuite/20_util/common_reference/requirements/
 583         explicit_instantiation.cc: New test.
 584         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
 585         test.
 586
 587         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
 588         non-template overloads for each signed and unsigned integer type and
 589         char. Define deleted overload for bool (LWG 3266).
 590         * testsuite/20_util/to_chars/1_neg.cc: Remove.
 591         * testsuite/20_util/to_chars/3.cc: New test.
 592         * testsuite/20_util/to_chars/lwg3266.cc: New test.
 593
 594 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 595
 596         * acinclude.m4: Handle uclinux*.
 597         * configure: Regenerate.
 598         * configure.host: Handle uclinux*
 599
 600 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
 601         Mickaël Guêné <mickael.guene@st.com>
 602
 603         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
 604         support.
 605
 606 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
 607
 608         PR libstdc++/91711
 609         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
 610         0ul being a valid null pointer constant.
 611
 612         * include/std/type_traits (__remove_cv_t): New alias template.
 613         (is_void, is_integral, is_floating_point, is_pointer)
 614         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
 615         (is_member_point), __is_signed_integer, __is_unsigned_integer)
 616         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
 617         (__decay_selector): Use __remove_cv_t.
 618         (remove_cv): Add partial specializations for cv-qualified types.
 619         (__decay_t): New alias template.
 620         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
 621         __decay_t.
 622         (__enable_if_t): Move earlier in the file.
 623         (_Require): Use __enable_if_t.
 624         (swap(T&, T&)): Use _Require.
 625         (swap(T(&)[N])): Use __enable_if_t.
 626
 627 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 628
 629         Implement C++20 p1424 - 'constexpr' feature macro concerns,
 630         Issue 3256 - Feature testing macro for constexpr algorithms,
 631         and Issue 3257 - Missing feature testing macro update from P0858.
 632         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
 633         * include/bits/algorithmfwd.h: Ditto.
 634         * include/std/utility: Ditto.
 635         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
 636         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
 637         __cpp_lib_constexpr macro in <algorith>.
 638         * testsuite/20_util/exchange/constexpr.cc: Add check for
 639         __cpp_lib_constexpr macro in <utility>.
 640         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
 641         __cpp_lib_constexpr_algorithms.
 642         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
 643         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
 644         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
 645         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
 646         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
 647         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
 648         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
 649         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
 650         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
 651         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
 652         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
 653         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
 654         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
 655         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
 656         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
 657         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
 658         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
 659         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
 660         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
 661         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
 662         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
 663         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
 664         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
 665         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
 666         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
 667         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
 668         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
 669         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
 670         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
 671         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
 672         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
 673         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
 674         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
 675         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
 676         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
 677         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
 678         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
 679         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
 680         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
 681         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
 682         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
 683         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
 684         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
 685         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
 686         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
 687         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
 688         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
 689         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
 690         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
 691         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
 692         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
 693         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
 694         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
 695
 696 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 697
 698         Update docs for recent <span> and constexpr lib changes.
 699         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
 700         p1023r0, p1085r2 status.
 701         * doc/html/manual/status.html: Regenerate.
 702
 703 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
 704
 705         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
 706         final offsets with constants.
 707
 708 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
 709
 710         * include/bits/range_access.h (__adl_to_address): Remove.
 711         * include/std/span (__is_base_derived_safe_convertible_v): Replace
 712         with span::__is_compatible.
 713         (__is_std_array_v): Replace with __is_std_array class template and
 714         partial specializations.
 715         (__is_std_array, __is_std_span): New class templates and partial
 716         specializations.
 717         (span::__is_compatible): New alias template for SFINAE constraints.
 718         (span::span(element_type (&)[N])): Remove redundant constraints. Do
 719         not use __adl_data to obtain a pointer.
 720         (span::span(array<value_type, N>&)): Likewise.
 721         (span::span(const array<value_type, N>&)): Likewise.
 722         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
 723         (span::iter_value_t, span::derived_from): New alias templates for
 724         SFINAE constraints, until the equivalents are supported in <concepts>
 725         and <iterator>.
 726         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
 727         for SFINAE constraints.
 728         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
 729         SFINAE constraints.
 730         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
 731         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
 732         Use std::to_address instead of __adl_to_address.
 733         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
 734         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
 735         template for SFINAE constraints.
 736         [!_GLIBCXX_P1394] (span::span(Container&))
 737         (span::span(const Container&)): Improve constraints.
 738         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
 739         (span::span(pointer, pointer)): Remove redundant cast of pointer.
 740         (span(const span<OType, OExtent>&)): New constructor.
 741
 742 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
 743
 744         * include/bits/range_access.h (ssize): Define for C++20.
 745         * testsuite/24_iterators/range_access_cpp20.cc: New test.
 746         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
 747         * doc/html/*: Regenerate.
 748
 749 2019-09-06  Florian Weimer  <fweimer@redhat.com>
 750
 751         * configure: Regenerate.
 752
 753 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 754
 755         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
 756         P1024R3. Remove entry for P0920R2.
 757         * include/std/span  (__cpp_lib_span): Change value.
 758         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
 759         constructor.
 760         (span): Replace __extent_storage base class with data member.
 761         (span::_S_subspan_extent): New function.
 762         (span::empty()): Add nodiscard attribute.
 763         (span::front, span::back, span::operator[]): Check preconditions.
 764         (span::first, span::last, span::subspan): Add noexcept. Improve
 765         precondition checks (LWG 3103).
 766         (get): Remove redundant condition from static_assert.
 767         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
 768         (as_writable_bytes): Add inline specifier.
 769         * include/std/version (__cpp_lib_span): Change value.
 770         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
 771         * testsuite/23_containers/span/front_neg.cc: Likewise.
 772         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
 773         * testsuite/23_containers/span/last_neg.cc: Improve test.
 774         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
 775         * testsuite/23_containers/span/1.cc: New test.
 776         * testsuite/23_containers/span/2.cc: New test.
 777         * testsuite/23_containers/span/back_assert_neg.cc: New test.
 778         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
 779         * testsuite/23_containers/span/first_assert_neg.cc: New test.
 780         * testsuite/23_containers/span/first_neg.cc: New test.
 781         * testsuite/23_containers/span/front_assert_neg.cc: New test.
 782         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
 783         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
 784         * testsuite/23_containers/span/last_assert_neg.cc: New test.
 785         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
 786         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
 787         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
 788         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
 789         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
 790         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
 791
 792 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
 793
 794         * include/Makefile.am: Add <span> header.
 795         * include/Makefile.in: Regenerate.
 796         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
 797         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
 798         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
 799         New functions for performing argument-dependent lookup of range
 800         customization points.
 801         * include/bits/stl_iterator.h (__normal_iterator): Add
 802         _GLIBCXX20_CONSTEXPR to all functions.
 803         * include/std/span: New header.
 804         * include/std/version (__cpp_lib_span): Define feature test macro.
 805         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
 806         * testsuite/23_containers/span/everything.cc: New test.
 807         * testsuite/23_containers/span/get_neg.cc: New test.
 808         * testsuite/23_containers/span/last_neg.cc: New test.
 809         * testsuite/23_containers/span/subspan_neg.cc: New test.
 810         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
 811         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
 812         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
 813
 814 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
 815
 816         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
 817         * doc/html/*: Regenerate.
 818
 819 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 820
 821         PR libstdc++/41861
 822         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
 823         pthread_cond_clockwait function.
 824         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
 825         * configure: Regenerate.
 826         * config.h.in: Regenerate.
 827         * include/std/condition_variable: (condition_variable): Rename
 828         __steady_clock_t typedef and add system_clock. Change __clock_t to be
 829         a typedef for the preferred clock to convert arbitrary other clocks to.
 830         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
 831         overload.
 832         (wait_until): Change __clock_t overload to use system_clock.
 833         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
 834         steady_clock overload that calls pthread_cond_clockwait.
 835         (__wait_until_impl): Change __clock_t overload to use system_clock.
 836         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
 837         steady_clock for __clock_t if pthread_cond_clockwait is available.
 838
 839 2019-09-04  Mike Crowe  <mac@mcrowe.com>
 840
 841         * testsuite/30_threads/condition_variable/members/2.cc (test01):
 842         Parameterise so that test can be run against an arbitrary clock.
 843         (main): Test using std::chrono::steady_clock and a user-defined
 844         clock in addition to the previous std::chrono::system_clock.
 845         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
 846
 847 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
 848
 849         * crossconfig.m4: Remove references to spu.
 850         * configure: Regenerate.
 851         * doc/xml/manual/appendix_contributing.xml: Remove references
 852         to __ea as "badword" for spu.
 853         * doc/html/manual/source_code_style.html: Regenerate.
 854         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
 855         to avoid __ea (as "badword" for spu).
 856         (__ellint_rj): Likewise.
 857
 858 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
 859
 860         PR other/79543
 861         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
 862         scanning to conform to the GNU Coding Standards.
 863         * configure: Regenerate.
 864
 865 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 866
 867         * src/c++17/memory_resource.cc: Use __constinit keyword.
 868
 869 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 870
 871         * doc/xml/manual/abi.xml: Document 9.x library versions.
 872         * doc/html/*: Regenerate.
 873
 874 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
 875
 876         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
 877         (__detail::__to_chars_8_len): Remove.
 878         (__detail::__to_chars_8): Inline length calculation here.
 879         (__detail::__from_chars_binary): Use numeric_limits instead of
 880         CHAR_BIT.
 881
 882 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 883
 884         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 885         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
 886         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 887         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 888         Likewise.
 889
 890 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
 891
 892         * testsuite_files/util/testsuite_performance.h
 893         (resource_counter::start): Ignore unused malloc(0) result.
 894
 895 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
 896
 897         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
 898         Model Object Technologies): Adjust name and link.
 899
 900 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
 901
 902         * include/std/charconv (__detail::__to_chars_8)
 903         __detail::__to_chars_16): Replace array of precomputed digits with
 904         arithmetic operations to avoid CPU cache misses. Remove zero
 905         termination from array of digits to allow symbol merge with generic
 906         implementation of __detail::__to_chars. Replace final offsets with
 907         constants. Use __detail::__to_chars_len_2 instead of a generic
 908         __detail::__to_chars_len.
 909         (__detail::__to_chars): Remove zero termination from array of digits.
 910         (__detail::__to_chars_2): Leading digit is always '1'.
 911
 912 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 913
 914         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
 915
 916 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
 917
 918         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 919
 920 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
 921
 922         PR libstdc++/89164
 923         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
 924         to template parameters.
 925         * include/bits/stl_uninitialized.h (uninitialized_copy)
 926         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
 927         diagnose invalid uses.
 928         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
 929         Adjust expected error.
 930         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
 931         New test.
 932         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
 933         89164.cc: New test.
 934         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
 935         New test.
 936         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
 937         89164.cc: New test.
 938         * testsuite/23_containers/vector/cons/89164.cc: New test.
 939         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
 940
 941 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
 942
 943         PR libstdc++/91067
 944         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
 945         * configure: Regenerate.
 946         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
 947         missing symbols.
 948         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
 949         constructors.
 950         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 951
 952 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
 953
 954         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 955         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 956
 957 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
 958
 959         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
 960         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 961         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 962         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 963         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 964         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 965         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 966
 967 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
 968
 969         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 970         (std::filesystem::__gnu_posix::lstat): Add return type.
 971
 972 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
 973
 974         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
 975
 976         * include/std/numeric (reduce): Fix Doxygen markup.
 977
 978         PR libstdc++/91371
 979         * include/std/type_traits (is_function): Simplify definition. Remove
 980         partial specializations for function types.
 981         (__is_referenceable): Simplify definition.
 982         * testsuite/20_util/bind/91371.cc: New test.
 983         * testsuite/20_util/is_function/91371.cc: New test.
 984         * testsuite/20_util/is_function/value.cc: Check more pointer types.
 985         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
 986         * testsuite/20_util/is_object/91371.cc: New test.
 987
 988 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
 989
 990         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
 991
 992 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
 993
 994         PR libstdc++/91456
 995         * include/bits/std_function.h (__check_func_return_type): Remove.
 996         (function::_Callable): Use std::__is_invocable_impl instead of
 997         __check_func_return_type.
 998         * include/std/type_traits (__is_invocable_impl): Add another defaulted
 999         template parameter. Define a separate partial specialization for
1000         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
1001         with a check that models delayed temporary materialization.
1002         * testsuite/20_util/function/91456.cc: New test.
1003         * testsuite/20_util/is_invocable/91456.cc: New test.
1004
1005 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
1006
1007         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
1008
1009 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
1010
1011         Implement C++20 p0879 - Constexpr for swap and swap related functions.
1012         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
1013         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
1014         New macro.
1015         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
1016         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
1017         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
1018         * include/bits/move.h (swap): Add constexpr.
1019         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
1020         (__gcd, __rotate, rotate, __partition, __heap_select)
1021         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
1022         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
1023         (__introselect, __chunk_insertion_sort, next_permutation)
1024         (prev_permutation, partition, partial_sort, nth_element, sort)
1025         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
1026         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
1027         (swap_ranges): Add constexpr.
1028         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
1029         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
1030         Add constexpr.
1031         * include/std/type_traits (swap): Add constexpr.
1032         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
1033         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
1034         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
1035         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
1036         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
1037         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
1038         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
1039         * testsuite/25_algorithms/partition/constexpr.cc: New test.
1040         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
1041         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
1042         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
1043         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
1044         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
1045         * testsuite/25_algorithms/sort/constexpr.cc: New test.
1046         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
1047         * testsuite/25_algorithms/swap/constexpr.cc: New test.
1048         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
1049
1050 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
1051
1052         PR libstdc++/90361
1053         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
1054
1055         * include/std/tuple (__unpack_std_tuple): New variable template and
1056         partial specializations.
1057         (apply, make_from_tuple): Add noexcept-specifier.
1058         * testsuite/20_util/tuple/apply/2.cc: New test.
1059         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
1060
1061 2019-08-09  Corentin Gay  <gay@adacore.com>
1062
1063         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
1064         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
1065         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
1066         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
1067         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
1068         Add call to `VERIFY`.
1069
1070 2019-08-09  Alexandre Oliva <oliva@adacore.com>
1071
1072         * include/ext/random
1073         (normal_mv_distribution::param_type::param_type): New private
1074         ctor taking a decomposed varcov matrix, for use by...
1075         (operator>>): ... this, befriended.
1076         * include/ext/random.tcc (operator>>): Use it.
1077         (normal_mv_distribution::param_type::_M_init_lower): Adjust
1078         member function name in exception message.
1079
1080 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1081
1082         P0325R4 to_array from LFTS with updates
1083         * include/experimental/array (to_array): Qualify call to __to_array.
1084         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1085         * include/std/version (__cpp_lib_to_array): Likewise.
1086         * testsuite/23_containers/array/creation/1.cc: New test.
1087         * testsuite/23_containers/array/creation/2.cc: New test.
1088         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1089         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1090         Use zero for dg-error line number.
1091
1092 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1093
1094         P1651R0 bind_front should not unwrap reference_wrapper
1095         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1096         * include/std/version (__cpp_lib_bind_front): Update value.
1097         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1098         feature test macro.
1099         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1100
1101         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1102         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1103         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1104         specializations for __float128.
1105         * testsuite/26_numerics/numbers/float128.cc: New test.
1106
1107 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1108
1109         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1110         doxygen.nl.
1111
1112 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1113
1114         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1115         in <algorithm> and <utility> Headers.
1116         Implement C++20 p1023 - constexpr comparison operators for std::array.
1117         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1118         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1119         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1120         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1121         none_of, partition_copy, partition_point, remove, remove_if,
1122         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1123         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1124         count_if, equal, find, find_first_of, find_if, for_each, generate,
1125         generate_n, lexicographical_compare, merge, mismatch, replace,
1126         replace_if, search, search_n, set_difference, set_intersection,
1127         set_symmetric_difference, set_union, transform, unique_copy):
1128         Mark constexpr.
1129         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1130         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1131         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1132         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1133          Use const ref instead of ref arg;
1134         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1135         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1136         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1137         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1138         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1139         __iter_comp_iter): Mark constexpr.
1140         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1141         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1142         none_of, any_of, find_if_not, is_partitioned, partition_point,
1143         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1144         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1145         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1146         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1147         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1148         __equal_range, equal_range, binary_search, __includes, includes,
1149         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1150         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1151         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1152         find_if, find_first_of, adjacent_find, count, count_if, search,
1153         search_n, transform, replace, replace_if, generate, generate_n,
1154         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1155         set_intersection, __set_difference, set_difference,
1156         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1157         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1158         wrappers around __builtin_memmove and __builtin_memcmp
1159         respectively;
1160         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1161         copy, move, __copy_move_b, __copy_move_backward_a,
1162         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1163         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1164         __lexicographical_compare_impl, __lexicographical_compare,
1165         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1166         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1167         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1168         is_heap): Mark constexpr.
1169         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1170         is_heap): Mark constexpr.
1171         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1172         * include/std/array: Make comparison ops constexpr.
1173         * include/std/utility: Make exchange constexpr.
1174         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1175         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1176         * testsuite/23_containers/array/tuple_interface/
1177         tuple_element_neg.cc: Adjust.
1178         * testsuite/20_util/exchange/constexpr.cc: New.
1179         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1180         * testsuite/25_algorithms/constexpr_macro.cc: New.
1181         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1182         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1183         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1184         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1185         * testsuite/25_algorithms/copy/constexpr.cc: New.
1186         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1187         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1188         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1189         * testsuite/25_algorithms/count/constexpr.cc: New.
1190         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1191         * testsuite/25_algorithms/equal/constexpr.cc: New.
1192         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1193         * testsuite/25_algorithms/fill/constexpr.cc: New.
1194         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1195         * testsuite/25_algorithms/find/constexpr.cc: New.
1196         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1197         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1198         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1199         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1200         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1201         * testsuite/25_algorithms/generate/constexpr.cc: New.
1202         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1203         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1204         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1205         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1206         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1207         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1208         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1209         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1210         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1211         * testsuite/25_algorithms/merge/constexpr.cc: New.
1212         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1213         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1214         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1215         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1216         * testsuite/25_algorithms/remove/constexpr.cc: New.
1217         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1218         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1219         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1220         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1221         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1222         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1223         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1224         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1225         * testsuite/25_algorithms/search/constexpr.cc: New.
1226         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1227         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1228         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1229         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1230         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1231         * testsuite/25_algorithms/transform/constexpr.cc: New.
1232         * testsuite/25_algorithms/unique/constexpr.cc: New.
1233         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1234         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1235
1236 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1237
1238         * include/std/memory (make_obj_using_allocator): Qualify call to
1239         uses_allocator_construction_args.
1240
1241         P0631R4 Math Constants
1242         * include/Makefile.am: Add new header.
1243         * include/Makefile.in: Regenerate.
1244         * include/precompiled/stdc++.h: Include new header.
1245         * include/std/numbers: New header.
1246         * include/std/version (__cpp_lib_math_constants): Define.
1247         * testsuite/26_numerics/numbers/1.cc: New test.
1248         * testsuite/26_numerics/numbers/2.cc: New test.
1249         * testsuite/26_numerics/numbers/3.cc: New test.
1250         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1251
1252         * include/std/bit: Add Doxygen comments.
1253
1254         PR libstdc++/91308
1255         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1256         constraints on deleter that should only apply to the constructor.
1257         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1258         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1259         constraints on deleter here.
1260         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1261
1262 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1263
1264         PR libstdc++/51333
1265         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1266         constructor inline.
1267         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1268         constructor.
1269         * testsuite/18_support/51333.cc: New test.
1270
1271 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1272
1273         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1274         to the Doxygen manual. Avoid a "here" link on the way.
1275         Fix another broken link to Doxygen docblocks.
1276
1277 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1278
1279         * include/std/bit (__cpp_lib_endian): Define.
1280         * include/std/version (__cpp_lib_endian): Define.
1281         * testsuite/26_numerics/endian/2.cc: New.
1282         * testsuite/26_numerics/endian/3.cc: New.
1283         * testsuite/26_numerics/endian/4.cc: New.
1284
1285 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1286
1287         * testsuite/util/testsuite_iterators.h
1288         (bidirectional_iterator_wrapper): Fix type comment.
1289         (random_access_iterator_wrapper): Likewise.
1290
1291 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         * include/std/bit (endian): Move definition here as per P1612R1.
1294         * include/std/type_traits (endian): Remove definition from here.
1295         * testsuite/20_util/endian/1.cc: Rename to ...
1296         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1297
1298 2019-07-25  Martin Liska  <mliska@suse.cz>
1299             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1300
1301         PR c++/23383
1302         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1303         -fno-allocation-dce.
1304         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1305         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1306         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1307
1308 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1309
1310         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1311         * testsuite/26_numerics/bit/bit.count/*: Here.
1312
1313         * include/std/bit (__rotl, __rotr): Change second parameter from
1314         unsigned int to int and handle negative values.
1315         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1316         parameter from unsigned int to int. Add nodiscard attribute.
1317         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1318         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1319         shifts.
1320         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1321         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1322         shifts.
1323
1324         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1325         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1326         so that out of range values cause undefined behaviour. Ensure that
1327         shift will still be undefined if left operand is promoted.
1328         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1329         unrepresentable values with checks that they are not core constant
1330         expressions.
1331         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1332
1333 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1334
1335         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1336         sized deallocation size computation.
1337
1338 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1339
1340         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1341
1342 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1343
1344         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1345         (~_Temporary_buffer()): Use latter.
1346         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1347
1348 2019-07-17  Andreas Schwab  <schwab@suse.de>
1349
1350         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1351
1352 2019-07-16  Jason Merrill  <jason@redhat.com>
1353
1354         * include/std/memory (uses_allocator_construction_args): Add parens
1355         around constraint.
1356
1357 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1358
1359         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1360
1361         * include/experimental/string_view (__detail::__idt): Remove.
1362         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1363         Use __type_identity_t instead of __detail::__idt;
1364         * include/std/string_view (__detail::__idt): Remove.
1365         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1366         Use __type_identity_t instead of __detail::__idt;
1367         * include/std/type_traits (__type_identity_t): New alias template.
1368
1369         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1370         and floating point atomics.
1371
1372 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1373
1374         * doc/xml/manual/configure.xml: Improve documentation of
1375         --enable-libstdcxx-time option.
1376
1377         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1378         wrappers around atomic built-ins.
1379         (__atomic_float, __atomic_ref): New class templates for use as base
1380         classes.
1381         * include/std/atomic (atomic<float>, atomic<double>)
1382         (atomic<long double>): New explicit specializations.
1383         (atomic_ref): New class template.
1384         (__cpp_lib_atomic_ref): Define.
1385         * include/std/version (__cpp_lib_atomic_ref): Define.
1386         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1387         * testsuite/29_atomics/atomic_float/1.cc: New test.
1388         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1389         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1390         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1391         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1392         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1393         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1394         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1395
1396 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1397
1398         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1399         throw() with _GLIBCXX_NOTHROW.
1400         (__atomic_add_dispatch): Return after performing atomic increment.
1401
1402 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1403
1404         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1405         (__exchange_and_add): Replace static specifier with always_inline
1406         attribute.
1407         (__exchange_and_add_single, __atomic_add_single): Likewise.
1408         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1409         combine !__gthread_active_p() and !__GTHREADS branches.
1410
1411 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1412
1413         PR libstdc++/91067
1414         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1415         * configure: Regenerate.
1416         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1417         missing symbols.
1418         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1419         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1420
1421 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1422
1423         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1424         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1425         instead of __is_identifier to detect Clang support.
1426
1427 2019-07-02  Jim Wilson  <jimw@sifive.com>
1428
1429         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1430         and xmllint.
1431         * configure: Regenerate.
1432
1433 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1434
1435         PR libstdc++/91012
1436         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1437         for the what_arg parameters.
1438         (filesystem_error::filesystem_error): Pass system_error::what() to
1439         the _Impl constructor.
1440         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1441         filesystem_error::what() contains system_error::what().
1442
1443 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1444
1445         * include/std/charconv (chars_format): Define bitmask type.
1446         * testsuite/20_util/to_chars/chars_format.cc: New test.
1447
1448         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1449         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1450         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1451         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1452         (countl_one(byte), countr_zero(byte), countr_one(byte))
1453         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1454         (log2p1(byte)): Remove.
1455         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1456         (__detail::__is_int_to_chars_type): Remove.
1457         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1458         and __is_unsigned_integer.
1459         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1460         (__is_signed_integer, __is_unsigned_integer): New helpers.
1461         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1462         std::byte overload.
1463         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1464         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1465         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1466         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1467         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1468         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1469         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1470         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1471         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1472         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1473
1474 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1475
1476         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1477         function.
1478
1479 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1480
1481         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1482         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1483         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1484         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1485
1486 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1487
1488         * include/std/numeric (midpoint(T, T)): Change implementation for
1489         floating-point types to avoid incorrect rounding of denormals.
1490         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1491         rounding with denormals.
1492         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1493         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1494
1495         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1496
1497 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1498
1499         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1500         stage of bootstrap.
1501         * configure: Regenerate.
1502
1503         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
1504         Qualify calls to __never_valueless.
1505
1506         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
1507         C++17 working draft.
1508
1509         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
1510         vector<bool> for test.
1511         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1512
1513 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1514
1515         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
1516         private.
1517         (istream_iterator::_M_read()): Do not check stream state before
1518         attempting extraction. Set stream pointer to null when extraction
1519         fails (P0738R2).
1520         (operator==(const istream_iterator&, const istream_iterator&)): Change
1521         to be a hidden friend of istream_iterator.
1522         (operator!=(const istream_iterator&, const istream_iterator&)):
1523         Likewise.
1524         (ostream_iterator::ostream_iterator()): Add default constructor.
1525         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
1526         addressof.
1527         * testsuite/24_iterators/istream_iterator/1.cc: New test.
1528         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
1529         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
1530         constructor taking a string.
1531         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
1532         New test.
1533
1534 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
1535             Jonathan Wakely  <jwakely@redhat.com>
1536
1537         PR libstdc++/90945
1538         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
1539         values of type bool for vector<bool> elements.
1540         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
1541         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1542
1543 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
1544
1545         PR libstdc++/90920 partially revert r263433
1546         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
1547         (rotate): Remove checks.
1548         * testsuite/25_algorithms/rotate/90920.cc: New test.
1549
1550         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
1551         category used in invocable check.
1552         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
1553         * testsuite/26_numerics/reduce/2.cc: New test.
1554
1555 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
1556
1557         * include/bits/algorithmfwd.h: Change title of doc group.
1558         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
1559         P0024R2.
1560         * include/bits/stl_numeric.h: Define doc group and add algos to it.
1561         * include/std/numeric (__is_random_access_iter): New internal trait.
1562         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
1563         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
1564         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
1565         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
1566         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
1567         * testsuite/26_numerics/reduce/1.cc: New test.
1568         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
1569         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
1570         * testsuite/26_numerics/transform_reduce/1.cc: New test.
1571         * testsuite/util/testsuite_iterators.h (test_container::size()): New
1572         member function.
1573
1574         * include/c_global/cstddef (std::byte): Perform arithmetic operations
1575         in unsigned int to avoid promotion (LWG 2950).
1576
1577 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1578
1579         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
1580         failure on AIX.
1581
1582         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
1583
1584         PR libstdc++/90281 Fix string conversions for filesystem::path
1585         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
1586         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
1587         __str_codecvt_in_all to fail for partial conversions and throw on
1588         error.
1589         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
1590         (path::_Cvt<char8_t>): Add explicit specialization.
1591         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
1592         overloads.
1593         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1594         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
1595         instead of codecvt_utf8. Use __str_codecvt_in_all and
1596         __str_codecvt_out_all.
1597         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1598         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1599         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1600         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1601         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
1602         after converting to UTF-8.
1603         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
1604         __str_codecvt_in_all.
1605         (path::string): Fix initialization of string types with different
1606         allocators.
1607         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1608         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1609         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
1610         runtime conditions.
1611         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
1612         return false for partial conversions.
1613         * include/experimental/bits/fs_path.h (u8path):
1614         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
1615         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
1616         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
1617         instead of codecvt_utf8. Use __str_codecvt_in_all and
1618         __str_codecvt_out_all.
1619         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
1620         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
1621         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1622         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
1623         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
1624         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1625         __str_codecvt_in_all.
1626         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
1627         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
1628         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
1629         __str_codecvt_in_all.
1630         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
1631         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
1632         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
1633         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
1634         strings and with Unicode characters outside the basic multilingual
1635         plane.
1636         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
1637         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
1638         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
1639         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
1640         * testsuite/experimental/filesystem/path/native/string.cc: Test with
1641         empty strings and with Unicode characters outside the basic
1642         multilingual plane.
1643
1644 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
1645             Jonathan Wakely  <jwakely@redhat.com>
1646
1647         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
1648         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
1649         deallocate node if insertion fails.
1650         (_Hashtable::_M_insert_multi_node): Likewise.
1651         (_Hashtable::_M_reinsert_node): Pass additional key argument.
1652         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
1653         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
1654         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
1655         (_Hashtable::extract(const _Key&)): Likewise.
1656         (_Hashtable::_M_merge_unique): Pass additional key argument.
1657         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
1658         _Scoped_node.
1659         (_Hashtable::_M_insert): Likewise.
1660         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
1661         (_Hashtable_alloc): Add comments to functions with misleading names.
1662
1663 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
1664
1665         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
1666         for std::string.
1667         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
1668         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
1669         header for std::allocator.
1670         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
1671         using-declaration for std::size_t.
1672         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
1673         Likewise.
1674         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
1675         std::istream.
1676         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
1677         * testsuite/experimental/map/erasure.cc: Include <string> for
1678         std::string.
1679         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
1680
1681 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
1682
1683         * include/experimental/type_traits (experimental::nonesuch): Use
1684         pragma to disable -Wctor-dtor-privacy warnings.
1685         * include/std/type_traits (__is_convertible_helper<From, To, false>)
1686         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
1687
1688         * include/std/version (__cpp_lib_bind_front): Add missing macro.
1689
1690 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
1691
1692         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
1693         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
1694         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
1695         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
1696
1697         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
1698         (variant::emplace): Change static_assert messages from "should be"
1699         to "must be".
1700         (hash<monostate>::operator()): Remove name of unused parameter.
1701
1702         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
1703         expression.
1704
1705         * include/Makefile.am: Add new <bits/charconv.h> header.
1706         * include/Makefile.in: Regenerate.
1707         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
1708         (to_string(long), to_string(unsigned long), to_string(long long))
1709         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
1710         * include/bits/charconv.h: New header.
1711         (__detail::__to_chars_len): Move here from <charconv>.
1712         (__detail::__to_chars_10_impl): New function extracted from
1713         __detail::__to_chars_10.
1714         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
1715         (__to_chars_unsigned_type): New class template that reuses
1716         __make_unsigned_selector_base::__select to pick a type.
1717         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
1718         (__detail::__to_chars_len): Move to new header.
1719         (__detail::__to_chars_10): Add inline specifier. Move code doing the
1720         output to __detail::__to_chars_10_impl and call that.
1721         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
1722         * testsuite/21_strings/basic_string/numeric_conversions/char/
1723         to_string.cc: Fix reference in comment. Remove unused variable.
1724         * testsuite/21_strings/basic_string/numeric_conversions/char/
1725         to_string_int.cc: New test.
1726
1727 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1728
1729         Fix ConstexprIterator requirements tests - No constexpr algorithms!
1730         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1731         Replace copy with hand-rolled loop.
1732         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1733         Ditto.
1734
1735 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
1736
1737         Test for C++20 p0858 - ConstexprIterator requirements.
1738         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
1739         New test.
1740         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
1741         New test.
1742
1743 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
1744
1745         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
1746         project) standards.
1747         * include/bits/c++config: Rename all macros of the form __PSTL* to
1748         _PSTL*.
1749         * include/std/algorithm: Likewise.
1750         * include/std/execution: Likewise.
1751         * include/std/numeric: Likewise.
1752         * include/std/memory: Likewise.
1753         * include/pstl/glue_memory_impl.h: Likewise.
1754         * include/pstl/numeric_impl.h: Likewise.
1755         * include/pstl/glue_memory_defs.h: Likewise.
1756         * include/pstl/execution_defs.h: Likewise.
1757         * include/pstl/utils.h: Likewise.
1758         * include/pstl/algorithm_fwd.h: Likewise.
1759         * include/pstl/unseq_backend_simd.h: Likewise.
1760         * include/pstl/glue_execution_defs.h: Likewise.
1761         * include/pstl/algorithm_impl.h: Likewise.
1762         * include/pstl/parallel_impl.h: Likewise.
1763         * include/pstl/memory_impl.h: Likewise.
1764         * include/pstl/glue_numeric_defs.h: Likewise.
1765         * include/pstl/parallel_backend_utils.h: Likewise.
1766         * include/pstl/glue_algorithm_defs.h: Likewise.
1767         * include/pstl/parallel_backend.h: Likewise.
1768         * include/pstl/glue_numeric_impl.h: Likewise.
1769         * include/pstl/parallel_backend_tbb.h: Likewise.
1770         * include/pstl/numeric_fwd.h: Likewise.
1771         * include/pstl/glue_algorithm_impl.h: Likewise.
1772         * include/pstl/execution_impl.h: Likewise.
1773         * include/pstl/pstl_config.h: Likewise.
1774         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1775         * testsuite/util/pstl/test_utils.h: Likewise.
1776         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
1777         Likewise.
1778         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
1779         Likewise.
1780         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
1781         Likewise.
1782         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
1783         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
1784         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
1785         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
1786         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
1787         Likewise.
1788         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
1789         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
1790         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
1791         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
1792         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
1793         Likewise.
1794         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
1795         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
1796         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
1797         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
1798         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
1799         Likewise.
1800         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
1801         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
1802         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
1803         Likewise.
1804         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
1805         Likewise.
1806         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
1807         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
1808         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
1809         Likewise.
1810         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
1811         Likewise.
1812         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
1813         Likewise.
1814         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
1815         Likewise.
1816         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
1817         Likewise.
1818         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
1819         Likewise.
1820         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
1821         Likewise.
1822         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
1823         Likewise.
1824         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
1825         Likewise.
1826         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
1827         Likewise.
1828         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
1829         Likewise.
1830         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
1831
1832         Rename header guards to be consistent with upstream project's
1833         conventions.
1834         * include/pstl/glue_memory_impl.h: Rename all macros of the form
1835         _PSTL_(.*)_H to _PSTL_\U\1_H.
1836         * include/pstl/numeric_impl.h: Likewise.
1837         * include/pstl/glue_memory_defs.h: Likewise.
1838         * include/pstl/execution_defs.h: Likewise.
1839         * include/pstl/utils.h: Likewise.
1840         * include/pstl/algorithm_fwd.h: Likewise.
1841         * include/pstl/unseq_backend_simd.h: Likewise.
1842         * include/pstl/glue_execution_defs.h: Likewise.
1843         * include/pstl/algorithm_impl.h: Likewise.
1844         * include/pstl/parallel_impl.h: Likewise.
1845         * include/pstl/memory_impl.h: Likewise.
1846         * include/pstl/glue_numeric_defs.h: Likewise.
1847         * include/pstl/parallel_backend_utils.h: Likewise.
1848         * include/pstl/glue_algorithm_defs.h: Likewise.
1849         * include/pstl/parallel_backend.h: Likewise.
1850         * include/pstl/glue_numeric_impl.h: Likewise.
1851         * include/pstl/parallel_backend_tbb.h: Likewise.
1852         * include/pstl/numeric_fwd.h: Likewise.
1853         * include/pstl/glue_algorithm_impl.h: Likewise.
1854         * include/pstl/execution_impl.h: Likewise.
1855         * include/pstl/pstl_config.h: Likewise.
1856         * testsuite/util/pstl/pstl_test_config.h: Likewise.
1857
1858         Synchronize libstdc++ parallel algorithms with upstream
1859         project.
1860         * include/pstl/algorithm_fwd.h: Synchronize with
1861         upstream PSTL project.
1862         * include/pstl/algorithm_impl.h: Likewise.
1863         * include/pstl/execution_defs.h: Likewise.
1864         * include/pstl/execution_impl.h: Likewise.
1865         * include/pstl/glue_algorithm_impl.h: Likewise.
1866         * include/pstl/glue_execution_defs.h: Likewise.
1867         * include/pstl/numeric_fwd.h: Likewise.
1868         * include/pstl/numeric_impl.h: Likewise.
1869         * include/pstl/parallel_backend.h: Likewise.
1870         * include/pstl/pstl_config.h: Likewise.
1871         * include/pstl/unseq_backend_simd.h: Likewise.
1872         * include/pstl/parallel_backend_serial.h: New file.
1873         * include/Makefile.am (pstl_headers): Add
1874         parallel_backend_serial.h.
1875         * include/Makefile.in: Regenerate.
1876
1877         Clean up non-conforming names
1878         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
1879         Uglfiy copy_range1 and copy_range2
1880         (__pattern_walk2_n): Rename local n to __n
1881         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
1882         Rename parameter _T to _Tp.
1883
1884         Integrate non-TBB serial backend support
1885         * include/bits/c++config: Adjust TBB detection logic to select serial
1886         PSTL backend if no TBB present.
1887         * testsuite/utils/pstl/test_utils.h: Remove check for
1888         _PSTL_USE_PAR_POLICIES
1889
1890 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
1891
1892         * testsuite/24_iterators/container_access.cc: Move dg-options before
1893         dg-do directive so the target check uses the -std option.
1894
1895         PR libstdc++/90770
1896         * configure: Regenerate.
1897         * src/Makefile.am (stamp-debug): Also test for missing makefile.
1898         * src/Makefile.in: Regenerate.
1899
1900 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
1901
1902         * include/std/array: Do not include <stdexcept>.
1903         * include/std/optional: Include <exception> and
1904         <bits/exception_defines.h> instead of <stdexcept>.
1905         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
1906         for std::isalnum.
1907         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
1908         std::allocator.
1909         * testsuite/23_containers/map/erasure.cc: Include <string>.
1910         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1911
1912         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
1913         dg-prune-output for different C++98 diagnostic.
1914         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
1915         Likewise.
1916         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
1917         Likewise.
1918         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
1919         Likewise.
1920         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
1921         Likewise.
1922         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
1923         Likewise.
1924         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
1925         Likewise.
1926         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
1927         Likewise.
1928         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
1929         Likewise.
1930         * testsuite/23_containers/vector/requirements/dr438/
1931         constructor_1_neg.cc: Likewise.
1932         * testsuite/23_containers/vector/requirements/dr438/
1933         constructor_2_neg.cc: Likewise.
1934         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
1935         Likewise.
1936         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
1937
1938         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
1939         Do not test allocator rebinding extension for C++2a.
1940         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
1941         dg-do directive for C++17 and C++2a.
1942
1943         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1944         1_c++0x.cc: Remove redundant test.
1945         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1946         2.cc: Use target selector instead of preprocessor condition.
1947         * testsuite/23_containers/deque/requirements/explicit_instantiation/
1948         3.cc: Do not run test for C++2a.
1949         * testsuite/23_containers/forward_list/requirements/
1950         explicit_instantiation/3.cc: Likewise.
1951         * testsuite/23_containers/forward_list/requirements/
1952         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1953         for C++2a.
1954         * testsuite/23_containers/list/requirements/explicit_instantiation/
1955         1_c++0x.cc: Remove redundant test.
1956         * testsuite/23_containers/list/requirements/explicit_instantiation/
1957         2.cc: Use target selector instead of preprocessor condition.
1958         * testsuite/23_containers/list/requirements/explicit_instantiation/
1959         3.cc: Do not run test for C++2a.
1960         * testsuite/23_containers/list/requirements/explicit_instantiation/
1961         5.cc: Do not test allocator rebinding extension for C++2a.
1962         * testsuite/23_containers/map/requirements/explicit_instantiation/
1963         1_c++0x.cc: Remove redundant test.
1964         * testsuite/23_containers/map/requirements/explicit_instantiation/
1965         2.cc: Adjust comment.
1966         * testsuite/23_containers/map/requirements/explicit_instantiation/
1967         3.cc: Do not run test for C++2a.
1968         * testsuite/23_containers/map/requirements/explicit_instantiation/
1969         5.cc: Do not test allocator rebinding extension for C++2a.
1970         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1971         1_c++0x.cc: Remove redundant test.
1972         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1973         3.cc: Do not run test for C++2a.
1974         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
1975         5.cc: Do not test allocator rebinding extension for C++2a.
1976         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1977         3.cc: Do not run test for C++2a.
1978         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
1979         5.cc: Do not test allocator rebinding extension for C++2a.
1980         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
1981         Do not run test for C++2a.
1982         * testsuite/23_containers/set/requirements/explicit_instantiation/
1983         1_c++0x.cc: Remove redundant test.
1984         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
1985         Do not test allocator rebinding extension for C++2a.
1986         * testsuite/23_containers/unordered_map/requirements/
1987         explicit_instantiation/3.cc: Likewise.
1988         * testsuite/23_containers/unordered_map/requirements/
1989         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1990         for C++2a.
1991         * testsuite/23_containers/unordered_multimap/requirements/
1992         explicit_instantiation/3.cc: Do not run test for C++2a.
1993         * testsuite/23_containers/unordered_multimap/requirements/
1994         explicit_instantiation/5.cc: Do not test allocator rebinding extension
1995         for C++2a.
1996         * testsuite/23_containers/unordered_multiset/requirements/
1997         explicit_instantiation/3.cc: Do not run test for C++2a.
1998         * testsuite/23_containers/unordered_multiset/requirements/
1999         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2000         for C++2a.
2001         * testsuite/23_containers/unordered_set/requirements/
2002         explicit_instantiation/3.cc: Do not run test for C++2a.
2003         * testsuite/23_containers/unordered_set/requirements/
2004         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2005         for C++2a.
2006         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2007         2.cc: Remove redundant test.
2008         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2009         3.cc: Do not run test for C++2a.
2010         * testsuite/23_containers/vector/requirements/explicit_instantiation/
2011         3.cc: Likewise.
2012
2013         * include/std/type_traits (is_empty, is_polymorphic, is_final)
2014         (is_abstract, is_aggregate): Remove static_assert.
2015         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
2016         from builtin only.
2017         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
2018         missing -std=gnu++17 option.
2019         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
2020         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
2021         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
2022         from builtin only.
2023
2024         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
2025         * testsuite/18_support/set_unexpected.cc: Likewise.
2026         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
2027         void.
2028         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
2029         function to be valid in C++11.
2030         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
2031         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
2032         include Library Fundamentals or Networking headers in C++11 mode.
2033         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
2034
2035         * include/std/tuple (_TC): Replace with _TupleConstraints.
2036         (_TupleConstraints): New helper for SFINAE constraints, with more
2037         expressive member functions to reduce duplication when used.
2038         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
2039         (tuple::_TCC): Replace dummy type parameter with bool non-type
2040         parameter that can be used to check the pack size.
2041         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
2042         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
2043         checking constraints in constructors.
2044         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
2045         New SFINAE helpers.
2046         (tuple::tuple): Use new helpers to reduce repitition in constraints.
2047         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
2048         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
2049         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
2050         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
2051         constraints in constructors.
2052         (tuple::__is_alloc_arg()): New SFINAE helpers.
2053         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
2054         constraints.
2055         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
2056         * testsuite/20_util/tuple/cons/90700.cc: New test.
2057         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
2058         to meet new constraint on allocator-extended default constructor.
2059
2060 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2061
2062         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
2063         * include/bits/stl_multimap.h (multimap): Likewise.
2064
2065 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
2066
2067         Rename variables and cleanup comments.
2068         * include/bits/hashtable_policy.h
2069         * include/bits/hashtable.h
2070
2071 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2072
2073         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
2074         Fix bgcolor for P0340R3.
2075         * doc/html/*: Regenerate.
2076
2077         PR libstdc++/90686
2078         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2079         <experimental/memory_resource>.
2080         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2081         P0339R6, P0340R3, P1164R1 and P1357R1.
2082         * doc/html/*: Regenerate.
2083
2084         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2085         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2086         allocator::value_type assertion for C++2a.
2087         * include/bits/hashtable.h: Likewise.
2088         * include/bits/stl_deque.h: Likewise.
2089         * include/bits/stl_list.h: Likewise.
2090         * include/bits/stl_map.h: Likewise.
2091         * include/bits/stl_multimap.h: Likewise.
2092         * include/bits/stl_multiset.h: Likewise.
2093         * include/bits/stl_set.h: Likewise.
2094         * include/bits/stl_vector.h: Likewise.
2095         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2096         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2097         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2098         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2099         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2100         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2101         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2102         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2103         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2104         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2105         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2106         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2107
2108 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2109
2110         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2111
2112 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2113
2114         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2115         constructors.
2116         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2117         function.
2118         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2119
2120 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2121
2122         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2123
2124         PR libstdc++/90682
2125         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2126         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2127         * libsupc++/eh_term_handler.h: New header defining
2128         _GLIBCXX_DEFAULT_TERM_HANDLER.
2129         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2130         (set_terminate): Restore default handler when argument is null.
2131         (set_unexpected): Likewise.
2132         * testsuite/18_support/set_terminate.cc: New test.
2133         * testsuite/18_support/set_unexpected.cc: New test.
2134
2135         * include/backward/hashtable.h (size_t, ptrdiff_t)
2136         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2137         (distance, vector, pair, __iterator_category): Remove
2138         using-declarations that add these names to namespace __gnu_cxx.
2139         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2140         * include/ext/debug_allocator.h (size_t): Likewise.
2141         * include/ext/functional (size_t, unary_function, binary_function)
2142         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2143         Likewise.
2144         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2145         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2146         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2147         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2148         * include/ext/numeric (iota): Fix outdated comment.
2149         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2150         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2151         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2152         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2153         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2154         Likewise.
2155         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2156         (allocator, __true_type, __false_type): Likewise.
2157
2158 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2159
2160         PR libstdc++/71579
2161         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2162         New helpers for checking preconditions in traits.
2163         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2164         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2165         (is_destructible, is_nothrow_destructible, is_constructible)
2166         (is_default_constructible, is_copy_constructible)
2167         (is_move_constructible, is_nothrow_default_constructible)
2168         (is_nothrow_constructible, is_nothrow_copy_constructible)
2169         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2170         (is_nothrow_assignable, is_nothrow_copy_assignable)
2171         (is_nothrow_move_assignable, is_trivially_constructible)
2172         (is_trivially_copy_constructible, is_trivially_move_constructible)
2173         is_trivially_assignable, is_trivially_copy_assignable)
2174         (is_trivially_move_assignable, is_trivially_destructible)
2175         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2176         (is_invocable_r, is_nothrow_invocable)
2177         (has_unique_object_representations, is_aggregate): Add static_asserts
2178         to make sure that type traits are not misused with incomplete types.
2179         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2180         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2181         base characteristics without assertions that can be reused in other
2182         traits.
2183         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2184         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2185         test.
2186         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2187         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2188         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2189         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2190         * testsuite/20_util/is_function/value.cc: Likewise.
2191         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2192         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2193         test.
2194         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2195         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2196         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2197         * testsuite/20_util/is_union/value.cc: Likewise.
2198         * testsuite/20_util/is_void/value.cc: Likewise.
2199         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2200
2201 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2202
2203         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2204         Add new private member function.
2205         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2206         (random_device::_M_init_pretr1(const string&)): Call new private
2207         member with string data.
2208         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2209         Define.
2210         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2211         test using COW strings.
2212         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2213         a value from the device.
2214         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2215         Fix typo in token string.
2216
2217 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2218
2219         LWG2788 basic_string spurious use of a default constructible allocator
2220         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2221         (basic_string::_M_replace_dispatch): Construct temporary string with
2222         the current allocator.
2223         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2224         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2225
2226 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2227
2228         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2229         exception classes.
2230         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2231         section about new/delete overloads. Improve section on verbose
2232         terminate handler.
2233         * doc/html/*: Regenerate.
2234
2235         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2236         P0811R3. Change status of P1353R0.
2237         * doc/html/*: Regenerate.
2238
2239         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2240         documentation of implementation-defined types for [thread.req.native].
2241         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2242         implementation-defined strings for [variant.bad.access]. Fix typo in
2243         documentation of implementation-defined support for [fs.conform.9945].
2244         * doc/html/*: Regenerate.
2245
2246 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2247
2248         PR libstdc++/85494
2249         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2250         that fails on mingw-w64.
2251
2252         PR libstdc++/88881
2253         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2254         (status(const path&, error_code&)): Use parent_path() to remove
2255         trailing slash.
2256         (symlink_status(const path&, error_code&)): Duplicate workaround for
2257         bug in _wstat for paths with trailing slash.
2258         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2259         with trailing slash.
2260         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2261         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2262
2263         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2264         once instead of building it iteratively.
2265
2266         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2267
2268         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2269         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2270         the assembler supports rdseed.
2271         * config.h.in: Regenerate.
2272         * configure: Regenerate.
2273         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2274         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2275         * doc/html/*: Regenerate.
2276         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2277         * include/bits/random.h (random_device::random_device()): Always call
2278         _M_init rather than _M_init_pretr1.
2279         (random_device::random_device(const string&)): Likewise.
2280         (random_device::operator()()): Always call _M_getval().
2281         (random_device::_M_file): Replace first member of union with an
2282         anonymous struct, with _M_file as its first member.
2283         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2284         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2285         (USE_MT19937): Define if none of the above are defined.
2286         (USE_POSIX_FILE_IO): Define.
2287         (_M_strtoul): Remove.
2288         [USE_RDSEED] (__x86_rdseed): Define new function.
2289         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2290         (random_device::_M_init(const string&)): Initialize new union members.
2291         Add support for "rdseed" and "rand_s" tokens. Decide what the
2292         "default" token does according to which USE_* macros are defined.
2293         [USE_POSIX_FILE_IO]: Store a file descriptor.
2294         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2295         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2296         code from _M_strtoul.
2297         [!USE_MT19937]: Call _M_init, transforming the old default token or
2298         numeric tokens to "default".
2299         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2300         (random_device::_M_getval()): Use new union members to obtain a
2301         random number from the stored function pointer or file descriptor.
2302         [USE_MT19937]: Obtain a value from the mt19937 engine.
2303         (random_device::_M_getval_pretr1()): Call _M_getval().
2304         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2305         instead of fileno.
2306         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2307         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2308
2309 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2310
2311         PR libstdc++/90634
2312         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2313         _M_split_cmpts() for a path with multiple components.
2314         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2315         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2316         components and reserve space in vector. Return early when there is
2317         only one component.
2318         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2319         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2320
2321         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2322         form of std::equals for C++11 compatibility.
2323
2324 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2325
2326         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2327         C++ standard at ansi.org.
2328
2329 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2330
2331         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2332         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2333         to "run".
2334
2335         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2336         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2337
2338 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2339
2340         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2341         tests to ...
2342         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2343         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2344         "compile" test to "run".
2345
2346         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2347         * doc/html/*: Regenerate.
2348         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2349         rvalue aliasing constructor.
2350         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2351         (reinterpret_pointer_cast): Add overloads taking rvalues.
2352         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2353         Add rvalue aliasing constructor.
2354         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2355         "run" and check return values as well as types.
2356         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2357         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2358         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2359         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2360         values.
2361
2362         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2363         * doc/xml/manual/intro.xml: Likewise.
2364         * include/std/future (__create_task_state): Add default arguments
2365         to make providing an allocator optional.
2366         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2367         instead of delegating to another constructor.
2368         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2369         define allocator-extended constructors for C++17 and later.
2370         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2371         C++11 and C++14.
2372         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2373         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2374         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2375
2376 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2377
2378         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2379         Don't run the libstdc++/83237 part on simulator targets.
2380
2381 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2382
2383         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2384         P0040R3.
2385         * doc/html/*: Regenerate.
2386
2387         * include/experimental/any (__any_caster): Use RTTI if comparing
2388         addresses fails, to support non-unique addresses in shared libraries.
2389         * include/std/any (__any_caster): Likewise.
2390
2391         PR libstdc++/90220
2392         * include/experimental/any (__any_caster): Constrain to only be
2393         callable for object types. Use remove_cv_t instead of decay_t.
2394         If the type decays or isn't copy constructible, compare the manager
2395         function to a dummy specialization.
2396         (__any_caster): Add overload constrained for non-object types.
2397         (any::_Manager_internal<_Op>): Add dummy specialization.
2398         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2399         and array types.
2400
2401 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2402
2403         PR libstdc++/90557
2404         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2405         reversed arguments to uninitialized_copy_n.
2406         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2407         is unchanged by copy assignment.
2408         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2409         compare path components.
2410
2411         PR libstdc++/77691
2412         * include/experimental/memory_resource: Add system header pragma and
2413         do not define anything unless compiled as C++14 or later.
2414         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2415         (__resource_adaptor_imp::do_allocate): If the requested alignment
2416         is a fundamental alignment then either allocate directly from _M_alloc
2417         or call the new _M_allocate function.
2418         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2419         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2420         of the allocator rebound to a POD type with the specified alignment.
2421         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2422         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2423         Adjust expected allocation sizes.
2424         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2425         xfail for Solaris x86.
2426
2427 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2428
2429         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2430         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2431         Use std::__remove_cvref_t when building with GCC.
2432
2433 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2434
2435         PR libstdc++/90252
2436         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2437         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2438         Use check_v3_target_prop_cached to cache the result of the test.
2439
2440         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2441
2442 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2443
2444         PR libstdc++/90252
2445         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2446         Changed v3_target_compile check from preprocess to executable.
2447         Added "-ltbb" to v3_target_compile flags.
2448
2449 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2450
2451         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2452         Add check for Thread Building Blocks 2018 or later.
2453
2454 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2455
2456         * testsuite/experimental/names.cc: Only include Networking TS headers
2457         on targets with the necessary Gthreads support.
2458
2459 2019-05-20  Marek Polacek  <polacek@redhat.com>
2460
2461         CWG 2094 - volatile scalars are trivially copyable.
2462         PR c++/85679
2463         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2464         result for volatile int.
2465
2466 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2467
2468         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2469         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2470         conditionally.
2471
2472         PR c++/90532 Ensure __is_constructible(T[]) is false
2473         * include/std/type_traits (__do_is_default_constructible_impl)
2474         (__is_default_constructible_atom, __is_default_constructible_safe):
2475         Remove.
2476         (is_default_constructible): Use is_constructible.
2477         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2478         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2479         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2480         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2481         Likewise.
2482
2483 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2484
2485         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2486         to the deallocator with -fsized-deallocation.
2487
2488 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2489
2490         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2491         test by passing correct alignment to deallocate function.
2492
2493 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2494
2495         PR libstdc++/90520
2496         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2497         Raise exception if unique_ptr tuple member has unknown structure.
2498         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2499         Adjust worker to support new __uniq_ptr_data base class. Do not
2500         assume field called _M_head_impl is the first tuple element.
2501
2502 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2503
2504         * include/bits/stl_deque.h
2505         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
2506         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
2507         (_Deque_base::_Deque_impl_data): New.
2508         (_Deque_base::_Deque_impl): Inherit latter.
2509         (_Deque_base::_Deque_impl::_M_swap_data): Move...
2510         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
2511         (_Deque_base::_Deque_impl()): Add noexcept qualification.
2512         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
2513         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
2514         (deque<>::deque()): Default.
2515         (deque<>::deque(deque&&)): Default.
2516         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
2517         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
2518         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
2519         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
2520         _M_range_initialize.
2521         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
2522         (deque<>::resize(size_type, const value_type&)): Share a single
2523         implementation.
2524         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
2525         _M_range_insert_aux.
2526         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
2527         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
2528         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
2529         * testsuite/23_containers/deque/allocator/default_init.cc: New.
2530
2531 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
2532
2533         PR libstdc++/90246
2534         * include/std/variant (holds_alternative, get, get_if): Improve
2535         static assertion messages.
2536         (bad_variant_access::bad_variant_access()): Change default message.
2537         (__throw_bad_variant_access(bool)): New overload.
2538         (get): Use new overload.
2539         (visit, visit<R>): Improve exception message.
2540
2541         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
2542         targets. Add more cases from P0608R3.
2543         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
2544
2545         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
2546         * include/experimental/type_traits (is_detected_exact)
2547         (is_detected_exact_v): Likewise.
2548         * include/pstl/execution_defs.h (is_execution_policy)
2549         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
2550         * include/pstl/execution_impl.h (__policy_traits): Likewise.
2551         * testsuite/17_intro/names.cc: Check for more non-reserved names.
2552         * testsuite/experimental/names.cc: New test.
2553
2554         PR libstdc++/85965
2555         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
2556         assertions from the destructor.
2557         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
2558         Move static_assert for hash function to here.
2559         (_Hash_table_base::_M_equals): Move static_assert for equality
2560         predicate to here.
2561         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
2562         Remove.
2563         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
2564         the value directly instead of calling _S_value.
2565         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
2566         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
2567         _S_key(_Const_Link_type).
2568         * testsuite/23_containers/set/85965.cc: Check construction,
2569         destruction, assignment and size() do not trigger the assertions.
2570         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
2571         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
2572         expected errors.
2573         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
2574         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
2575         * testsuite/23_containers/set/48101_neg.cc: Likewise.
2576         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
2577         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
2578         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
2579         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
2580
2581         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
2582         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
2583         in C++11.
2584
2585         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
2586         P1165R1 entries.
2587         * doc/html/*: Regenerate.
2588         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
2589         of decay_t (P0777R1).
2590
2591 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
2592
2593         Move from state of allocators (LWG2593)
2594         * include/bits/stl_deque.h
2595         (_Deque_base(_Deque_base&&, false_type)): Remove.
2596         (_Deque_base(_Deque_base&&, true_type)): Remove.
2597         (_Deque_base(_Deque_base&&)): Adapt.
2598         (_Deque_base::_M_move_impl()): Remove.
2599         * testsuite/util/testsuite_allocator.h
2600         (propagating_allocator(propagating_allocator&&)): Preserve move from
2601         state.
2602         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
2603         Adapt.
2604         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
2605         Adapt.
2606         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
2607         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
2608         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
2609         Adapt.
2610         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
2611         Adapt.
2612         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
2613         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
2614         (test02): Adapt.
2615         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
2616         (test02): Adapt.
2617         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
2618         (test02): Adapt.
2619         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
2620         (test02): Adapt.
2621         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
2622         Adapt.
2623         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
2624         Adapt.
2625         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
2626         (test02): Adapt.
2627         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
2628         (test02): Adapt.
2629
2630 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
2631
2632         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
2633         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
2634
2635         * include/std/variant (__overload_set): Remove.
2636         (_Arr): New helper.
2637         (_Build_FUN): New class template to define a single FUN overload,
2638         with specializations to prevent unwanted conversions, as per P0608R3.
2639         (_Build_FUNs): New class template to build an overload set of FUN.
2640         (_FUN_type): New alias template to perform overload resolution.
2641         (__accepted_type): Use integer_constant base for failure case. Use
2642         _FUN_type for successful case.
2643         (variant::__accepted_index): Use _Tp instead of _Tp&&.
2644         (variant::variant(_Tp&&)): Likewise.
2645         (variant::operator=(_Tp&&)): Likewise.
2646
2647         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
2648         Replace raw visitation with a runtime check for the valueless state
2649         and a non-raw visitor.
2650         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
2651         (variant::index()): Remove branch.
2652         (variant::swap(variant&)): Use valueless_by_exception() instead of
2653         comparing the index to variant_npos, and add likelihood attribute.
2654
2655         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
2656         (_Hashtable_base::_Equal_hash_code): Define new class template.
2657         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
2658         _Equal_helper.
2659
2660         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
2661         Replace with _M_get non-static member function.
2662         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
2663         member function.
2664         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
2665         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
2666
2667         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
2668         _S_get accessors for members in EBO helpers.
2669         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
2670         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
2671         overloads.
2672         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
2673         helpers.
2674         (_Hashtable_base::_M_eq()): Remove non-const overload.
2675
2676 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
2677
2678         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
2679
2680 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2681
2682         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
2683         Fix return value.
2684
2685 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2686
2687         * config/os/solaris/solaris2.10: Move to ...
2688         * config/os/solaris: ... this.
2689         * configure.host (os_include_dir): Adapt.
2690         (abi_baseline_pair): Remove Solaris 10 handling.
2691         * config/abi/post/i386-solaris2.10: Remove.
2692         * config/abi/post/sparc-solaris2.10: Remove.
2693         * config/abi/post/i386-solaris2.11: Rename to ...
2694         * config/abi/post/i386-solaris: ... this.
2695         * config/abi/post/sparc-solaris2.11: Rename to ...
2696         * config/abi/post/sparc-solaris: ... this.
2697
2698         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
2699         workaround.
2700
2701         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
2702         xfail.
2703
2704 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2705
2706         * include/std/variant (__visit_with_index): Remove typedef.
2707         (__deduce_visit_result): New tag type.
2708         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
2709         visitation of possibly-valueless variants, forwarding to __do_visit
2710         with the relevant tag type.
2711         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
2712         and make lambda return void.
2713         (__variant_construct): Likewise.
2714         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
2715         __raw_idx_visit and make lambda return void.
2716         (_Multi_array::__untag_result): Add metafunction to check the function
2717         pointer type for a tag type that dictates the kind of visitation.
2718         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
2719         Use decltype(auto) instead of tagged function pointer type.
2720         (__gen_vtable_impl): Remove bool non-type parameter and unused
2721         _Variant_tuple parameter.
2722         (__gen_vtable_impl::__visit_invoke_impl): Remove.
2723         (__gen_vtable_impl::__do_visit_invoke): Remove.
2724         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
2725         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
2726         for the visit<R> case, rather than dispatching to separate functions.
2727         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
2728         lambda return void.
2729         (variant::swap): Likewise.
2730         (__do_visit): Replace two non-type template parameters with a single
2731         type parameter, so that the caller must specify the visitor's return
2732         type (or one of the tag types).
2733         (visit): Deduce a return type from the visitor and use the
2734         __deduce_visit_result tag to enforce that all overloads return the
2735         same type.
2736         (visit<R>): Call __do_visit<R> with explicit result type.
2737         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
2738         lambda return void.
2739
2740 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2741
2742         nonesuch is insufficiently useless (lwg2996)
2743         * include/std/type_traits (struct __nonesuch): Added private base
2744         class to make __nonesuch not an aggregate and removed deleted default
2745         constructor.
2746         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
2747         (operator=(const pair&)): Use __nonesuch instead of
2748         __nonesuch_no_braces.
2749         (operator=(pair&&)): Likewise
2750         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
2751         of __nonesuch_no_braces.
2752         (operator=(tuple&&)): Likewise
2753         * include/experimental/type_traits (struct nonesuch): Added private
2754         base class to make nonesuch not an aggregate and removed deleted
2755         default constructor.
2756         * testsuite/20_util/nonesuch/nonesuch.cc: New.
2757         * testsuite/experimental/type_traits/nonesuch.cc: New.
2758
2759 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2760
2761         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
2762         (_Function_handler): Remove partial specializations for void return
2763         types and pointers to member.
2764         (_Function_handler::_M_manager): Adapt to removal of
2765         _Simple_type_wrapper.
2766         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
2767         * include/std/functional (_Bind_result::__enable_if_void)
2768         (_Bind_result::__disable_if_void): Remove sfinae helpers.
2769         (_Bind_result::__call): Use __invoke_r and remove overloads for void
2770         return types.
2771         * include/std/future (__future_base::_Task_state::_M_run)
2772         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
2773         change return type of lambda expressions.
2774
2775         * include/bits/invoke.h (__invoke_r): Define new function implementing
2776         the INVOKE<R> pseudo-function.
2777         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
2778         * testsuite/20_util/function_objects/invoke/2.cc: New test.
2779
2780         * include/std/type_traits (__is_nt_convertible_helper): Define it
2781         unconditionally, not only for C++20.
2782         (__is_nothrow_convertible): Define internal trait for use in C++11.
2783         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
2784         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
2785         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
2786         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
2787         that has nothrow explicit conversion but potentially-throwing implicit
2788         conversion.
2789         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
2790         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
2791         function to only consider implicit conversions.
2792         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
2793
2794         * include/std/iterator: Include <iosfwd> instead of <istream> and
2795         <ostream>.
2796
2797         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
2798         Remove unused, non-standard function.
2799
2800         * include/bits/regex.h (match_results::max_size()): Adjust return
2801         value to account for prefix/suffix/unmatched subs.
2802         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
2803         reset the contained sub matches.
2804         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
2805         function to set result state following a failed match.
2806         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
2807         sub_match states after _M_resize. Use _M_establish_failed_match.
2808
2809         PR libstdc++/69724
2810         * include/std/thread (thread::_State_impl, thread::_S_make_state):
2811         Replace single _Callable parameter with variadic _Args pack, to
2812         forward them directly to the tuple of decayed copies.
2813         * testsuite/30_threads/thread/cons/69724.cc: New test.
2814
2815 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2816
2817         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
2818         * include/bits/basic_string.h: (operator=(const basic_string&):
2819         Move allocator decision to assign.
2820         (assign(const basic_string&)): Move allocator decision here.
2821         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
2822         Add tests.
2823         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
2824         Add tests.
2825
2826 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
2827
2828         * testsuite/util/testsuite_allocator.h (memory_resource)
2829         (default_resource_mgr): Fix indentation.
2830
2831         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
2832         Use operator-> to access raw pointer member.
2833         * testsuite/23_containers/vector/59829.cc: Likewise.
2834         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
2835         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
2836         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
2837         for tests.
2838         (PointerBase, PointerBase_void): Derive from NullablePointer and use
2839         its constructors and equality operators. Change converting
2840         constructors to use operator-> to access private member of the other
2841         pointer type.
2842         (PointerBase_void::operator->()): Add, for access to private member.
2843         (operator-(PointerBase, PointerBase)): Change to hidden friend.
2844         (operator==(PointerBase, PointerBase)): Remove.
2845         (operator!=(PointerBase, PointerBase)): Remove.
2846
2847         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
2848         not assume field called _M_head_impl is the first tuple element.
2849         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
2850         implementation more accurate.
2851         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
2852         empty pointer type and non-empty deleter.
2853
2854         LWG 2899 - Make is_move_constructible correct for unique_ptr
2855         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
2856         move assignment operator.
2857         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
2858         (__uniq_ptr_data): New class template with conditionally deleted
2859         special members.
2860         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
2861         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
2862         constructor and move assignment operator as defaulted.
2863         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
2864         __uniq_ptr_impl::release().
2865         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
2866         to __uniq_ptr_impl::reset(pointer).
2867         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2868         Check for new __uniq_ptr_data type.
2869         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
2870
2871 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2872
2873         PR libstdc++/90454.cc path construction from void*
2874         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
2875         pointers to void are rejected as well as void.
2876         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
2877         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
2878         pointers to void.
2879         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
2880
2881         * doc/xml/manual/policy_data_structures.xml: Comment out stray
2882         <remark> elements. Fix formatting of bibliography references.
2883
2884 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
2885
2886         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
2887
2888 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
2889
2890         Remove Profile Mode, deprecated since 7.1.0
2891         * doc/Makefile.am: Remove XML file for profile mode docs.
2892         * doc/Makefile.in: Regenerate.
2893         * doc/xml/authors.xml: Remove authors of profile mode docs.
2894         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
2895         mode.
2896         * doc/xml/manual/debug.xml: Likewise.
2897         * doc/xml/manual/evolution.xml: Document removal of profile mode.
2898         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
2899         * doc/xml/manual/spine.xml: Remove profile mode author credit.
2900         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
2901         directive.
2902         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
2903         macro.
2904         * doc/html/*: Regenerate.
2905         * include/Makefile.am: Remove profile mode headers.
2906         * include/Makefile.in: Regenerate.
2907         * include/bits/c++config (std::__profile): Remove namespace.
2908         [_GLIBCXX_PROFILE]: Remove checks for macro.
2909         * include/profile/array: Remove.
2910         * include/profile/base.h: Remove.
2911         * include/profile/bitset: Remove.
2912         * include/profile/deque: Remove.
2913         * include/profile/forward_list: Remove.
2914         * include/profile/impl/profiler.h: Remove.
2915         * include/profile/impl/profiler_algos.h: Remove.
2916         * include/profile/impl/profiler_container_size.h: Remove.
2917         * include/profile/impl/profiler_hash_func.h: Remove.
2918         * include/profile/impl/profiler_hashtable_size.h: Remove.
2919         * include/profile/impl/profiler_list_to_slist.h: Remove.
2920         * include/profile/impl/profiler_list_to_vector.h: Remove.
2921         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
2922         * include/profile/impl/profiler_node.h: Remove.
2923         * include/profile/impl/profiler_state.h: Remove.
2924         * include/profile/impl/profiler_trace.h: Remove.
2925         * include/profile/impl/profiler_vector_size.h: Remove.
2926         * include/profile/impl/profiler_vector_to_list.h: Remove.
2927         * include/profile/iterator_tracker.h: Remove.
2928         * include/profile/list: Remove.
2929         * include/profile/map: Remove.
2930         * include/profile/map.h: Remove.
2931         * include/profile/multimap.h: Remove.
2932         * include/profile/multiset.h: Remove.
2933         * include/profile/ordered_base.h: Remove.
2934         * include/profile/set: Remove.
2935         * include/profile/set.h: Remove.
2936         * include/profile/unordered_base.h: Remove.
2937         * include/profile/unordered_map: Remove.
2938         * include/profile/unordered_set: Remove.
2939         * include/profile/vector: Remove.
2940         * scripts/run_doxygen: Do not process profile mode headers.
2941         * testsuite/23_containers/array/element_access/60497.cc: Don't use
2942         profile mode type.
2943         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
2944         Remove dg-skip-if for profile mode.
2945         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
2946         preprocessor check for profile mode.
2947         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
2948         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
2949         for profile mode.
2950         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
2951         Likewise.
2952         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
2953         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
2954         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
2955         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
2956         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
2957         Likewise.
2958         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
2959         Likewise.
2960         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
2961         Likewise.
2962         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
2963         Likewise.
2964         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
2965         preprocessor check for profile mode.
2966         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
2967         Likewise.
2968         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
2969         Remove dg-skip-if for profile mode.
2970         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
2971         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
2972         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
2973         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
2974         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
2975         * testsuite/Makefile.am: Remove profile_flags variable and
2976         * testsuite/Makefile.am: Remove profile_flags variable and
2977         check-profile target.
2978         * testsuite/Makefile.in: Regenerate.
2979         * testsuite/ext/profile/all.cc: Remove.
2980         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
2981         * testsuite/ext/profile/profiler_algos.cc: Remove.
2982         * testsuite/ext/profile/replace_new.cc: Remove.
2983         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
2984         preprocessor check for profile mode.
2985         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
2986         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
2987         (check_v3_target_normal_mode): Do not check for profile mode macro.
2988         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
2989         profile mode.
2990         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
2991         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
2992         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
2993         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
2994         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
2995         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
2996         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
2997         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2998         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
2999         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3000
3001         Remove array_allocator extension, deprecated since 4.9.0
3002         * doc/xml/manual/allocator.xml: Remove documentation for
3003         array_allocator.
3004         * doc/xml/manual/evolution.xml: Document array_allocator removal.
3005         * doc/xml/manual/using.xml: Remove header from documentation.
3006         * include/Makefile.am: Remove <ext/array_allocator.h> header.
3007         * include/Makefile.in: Regenerate.
3008         * include/ext/array_allocator.h: Remove.
3009         * include/precompiled/extc++.h: Do not include removed header.
3010         * testsuite/ext/array_allocator/1.cc: Remove.
3011         * testsuite/ext/array_allocator/2.cc: Remove.
3012         * testsuite/ext/array_allocator/26875.cc: Remove.
3013         * testsuite/ext/array_allocator/3.cc: Remove.
3014         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
3015         * testsuite/ext/array_allocator/check_delete.cc: Remove.
3016         * testsuite/ext/array_allocator/check_new.cc: Remove.
3017         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
3018         * testsuite/ext/headers.cc: Do not include removed header.
3019
3020 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
3021
3022         * include/bits/stl_bvector.h
3023         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3024         Make hidden friend.
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         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3032         Likewise.
3033         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3034         Likewise.
3035         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3036         Likewise.
3037         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
3038         copy elision.
3039         (_Bit_iterator::operator-(difference_type)): Likewise.
3040         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
3041         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
3042         NRVO copy elision.
3043         (_Bit_const_iterator::operator-(difference_type)): Likewise.
3044         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
3045
3046 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
3047
3048         PR libstdc++/81266
3049         * testsuite/util/thread/all.h: Do not use remove_pointer for
3050         std::thread::native_handle_type.
3051
3052         PR libstdc++/90397
3053         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
3054         (_Variant_storage<true, Types...>::_M_reset()))
3055         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
3056         (__get_storage): Likewise.
3057         (variant): Add noexcept to friend declarations for __get and
3058         __get_storage.
3059
3060         PR libstdc++/90388
3061         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
3062         Use _Require for constraints.
3063         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
3064         per the standard.
3065         (__uniq_ptr_hash): New base class with conditionally-disabled call
3066         operator.
3067         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
3068         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
3069         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
3070
3071         * include/bits/shared_ptr.h: Improve docs.
3072         * include/bits/shared_ptr_base.h: Likewise.
3073         * include/bits/stl_uninitialized.h: Likewise.
3074         * include/bits/unique_ptr.h: Likewise.
3075         * libsupc++/new: Likewise.
3076
3077 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
3078
3079         * include/bits/stl_deque.h
3080         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3081         Make hidden friend.
3082         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3083         Likewise.
3084         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3085         Likewise.
3086         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3087         Likewise.
3088         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3089         Likewise.
3090         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3091         Likewise.
3092         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3093         copy elision.
3094         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3095
3096 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3097
3098         PR libstdc++/90277
3099         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3100         (test01): Reserve for number of insertions to avoid rehash during test.
3101         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3102         (test01): Likewise.
3103         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3104         (test01): Likewise.
3105         (test02): Likewise.
3106         (test03): Likewise.
3107
3108 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3109
3110         * include/experimental/bits/fs_path.h: Improve docs.
3111         * include/experimental/bits/net.h: Fix wrong header name in comment.
3112         Do not document implementation details.
3113         * include/experimental/netfwd: Fix doxygen grouping.
3114
3115 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3116
3117         * include/bits/stl_pair.h: Improve docs.
3118         * include/std/tuple: Likewise.
3119
3120         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3121         inline namespace.
3122         * include/std/chrono: Improve docs.
3123         * include/std/ratio: Do not document implementation details.
3124         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3125         line numbers.
3126         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3127
3128         PR libstdc++/89102
3129         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3130         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3131         (__duration_common_type): New helper.
3132         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3133         __duration_common_type.
3134         (__timepoint_common_type_wrapper): Replace with ...
3135         (__timepoint_common_type): New helper.
3136         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3137         Use __time_point_common_type.
3138         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3139         (__common_type_impl): If either argument is transformed by decay,
3140         use the common_type of the decayed types.
3141         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3142         decayed, use __do_common_type_impl to get the common_type.
3143         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3144         (__do_member_type_wrapper, __member_type_wrapper)
3145         (__expanded_common_type_wrapper): Remove.
3146         (__common_type_pack, __common_type_fold): New helpers.
3147         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3148         __member_type_wrapper and __expanded_common_type_wrapper.
3149         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3150         Test zero-length template argument list.
3151         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3152         Test single argument cases and argument types that should decay.
3153         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3154         Adjust expected error.
3155         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3156         dg-error lineno.
3157         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3158         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3159         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3160
3161         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3162
3163 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3164
3165         Make allocator propagation more consistent for
3166         operator+(basic_string) (P1165R1)
3167         * include/bits/basic_string.h
3168         (operator+(basic_string&&, basic_string&&): Changed resulting
3169         allocator to always be the one from the first parameter.
3170         * include/bits/basic_string.tcc
3171         (operator+(const _CharT*, const basic_string&)): Changed
3172         resulting allocator to be SOCCC on the second parameter's allocator.
3173         (operator+(_CharT, const basic_string&)): Likewise.
3174         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3175         New.
3176         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3177         New.
3178
3179 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3180
3181         * include/bits/regex.h: Improve docs.
3182         * include/bits/regex.tcc: Do not document implementation details.
3183
3184         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3185
3186 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3187
3188         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3189         Add type printer for container types in std::__debug namespace.
3190         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3191         (gdb-tests): Use distinct parameters for the type of test and use of
3192         regex.
3193         (gdb-test): Check for regex test even if 'whatis' test.
3194         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3195         mode.
3196         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3197         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3198         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3199         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3200         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3201         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3202         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3203
3204 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3205
3206         * include/std/system_error (error_category): Fix comment.
3207
3208         PR libstdc++/90299
3209         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3210         argument is an empty path.
3211         (absolute(const path&, error_code&)): Use invalid_argument as error
3212         code instead of no_such_file_or_directory.
3213         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3214         of non-existent paths and empty paths with both overloads of absolute.
3215
3216         * include/std/system_error (error_category, error_code)
3217         (error_condition): Improve docs.
3218         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3219         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3220         to class documentation. Suppress documentation for implementation
3221         details.
3222         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3223         Suppress documentation for implementation details.
3224
3225         * include/std/system_error (error_code): Remove friend declaration
3226         for hash<error_code>.
3227         (hash<error_code>::operator()): Use public member functions to access
3228         value and category.
3229         (hash<error_condition>::operator()): Use address of category, not
3230         its object representation.
3231         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3232         Use public member functions to access value and category.
3233         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3234
3235 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3236
3237         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3238         * include/bits/hashtable_policy.h
3239         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3240         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3241         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3242         smaller than input value rather than always greater. Preserve
3243         _M_next_resize if called with 0 input. Use __builtin_floorl.
3244         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3245         elements + number of insertions is greater than _M_next_resize. Start
3246         with 11 buckets if not told otherwise. Use __builtin_floorl.
3247         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3248         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3249         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3250         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3251         told otherwise. Use __builtin_floorl.
3252         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3253         to also validate _Power2_rehash_policy.
3254         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3255         Adapt.
3256
3257 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3258
3259         PR libstdc++/61761
3260         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3261         std::copysign.
3262
3263         PR libstdc++/52119
3264         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3265         overflow warning with -Wpedantic -Wsystem-headers.
3266
3267 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3268
3269         PR libstdc++/90314
3270         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3271         * include/bits/move.h (swap): Remove extra parentheses.
3272
3273         * include/experimental/bits/lfts_config.h: Improve doc markup.
3274         * include/experimental/optional: Improve docs.
3275         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3276         (__constexpr_addressof): Remove.
3277         (optional::operator->()): Use std::__addressof().
3278         * include/std/optional (optional::operator->()): Adjust whitespace.
3279         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3280         that operator-> is still constexpr with overloaded operator&. Change
3281         to compile-only test.
3282         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3283         compile-only test.
3284
3285         * include/bits/shared_ptr.h: Improve docs.
3286         * include/bits/shared_ptr_atomic.h: Likewise.
3287         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3288
3289         * include/bits/basic_string.h: Fix iterator/index confusion in
3290         Doxygen comments.
3291         * include/bits/range_access.h: Fix Doxygen warnings.
3292         * include/bits/refwrap.h: Do not document implementation details.
3293         (ref, cref): Group docs with reference_wrapper.
3294         * include/std/fstream: Fix Doxygen markup.
3295         * libsupc++/initializer_list (begin, end): Group docs with
3296         initializer_list.
3297
3298         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3299
3300         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3301         * include/std/mutex: Likewise.
3302         * include/std/shared_mutex: Likewise.
3303
3304         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3305         * include/bits/fs_fwd.h: Likewise.
3306         * include/bits/fs_ops.h: Likewise.
3307         * include/bits/fs_path.h: Likewise.
3308         * include/std/filesystem: Likewise.
3309
3310         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3311         * include/experimental/buffer: Likewise.
3312         * include/experimental/executor: Likewise.
3313         * include/experimental/internet: Likewise.
3314         * include/experimental/io_context: Likewise.
3315         * include/experimental/net: Likewise.
3316         * include/experimental/netfwd: Likewise.
3317         * include/experimental/socket: Likewise.
3318         * include/experimental/timer: Likewise.
3319
3320         * doc/doxygen/doxygroups.cc: Move description of experimental group
3321         here.
3322         * include/experimental/algorithm: Add to libfund-ts doc group.
3323         * include/experimental/any: Likewise. Do not document implementation
3324         details.
3325         * include/experimental/array: Add to libfund-ts doc group.
3326         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3327         for Library Fundamentals.
3328         * include/experimental/chrono: Add to libfund-ts doc group.
3329         * include/experimental/deque: Likewise.
3330         * include/experimental/forward_list: Likewise.
3331         * include/experimental/functional: Likewise.
3332         * include/experimental/iterator: Likewise.
3333         * include/experimental/list: Likewise.
3334         * include/experimental/map: Likewise.
3335         * include/experimental/memory: Likewise.
3336         * include/experimental/memory_resource: Likewise. Improve docs.
3337         details.
3338         * include/experimental/numeric: Add to libfund-ts doc group.
3339         * include/experimental/optional: Likewise.
3340         * include/experimental/propagate_const: Likewise.
3341         * include/experimental/random: Likewise.
3342         * include/experimental/ratio: Likewise.
3343         * include/experimental/regex: Likewise.
3344         * include/experimental/set: Likewise.
3345         * include/experimental/source_location: Likewise.
3346         * include/experimental/string: Likewise.
3347         * include/experimental/string_view: Likewise.
3348         * include/experimental/system_error: Likewise.
3349         * include/experimental/tuple: Likewise.
3350         * include/experimental/type_traits: Likewise.
3351         * include/experimental/unordered_map: Likewise.
3352         * include/experimental/unordered_set: Likewise.
3353         * include/experimental/utility: Likewise.
3354         * include/experimental/vector: Likewise.
3355         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3356         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3357         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3358         Likewise.
3359         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3360         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3361         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3362         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3363         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3364
3365         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3366         * include/experimental/bits/fs_fwd.h: Improve docs.
3367         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3368         * include/experimental/bits/fs_path.h: Likewise.
3369         (path, filesystem_error, u8path): Improve docs.
3370         * include/experimental/filesystem: Link to docs for TS.
3371
3372         * config/allocator/new_allocator_base.h (__allocator_base): Add
3373         workaround for Doxygen bug #6945.
3374         * include/std/memory: Improve docs. Define group for pointer safety.
3375         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3376         conditional to suppress documentation for implementation details.
3377
3378         * include/bits/specfun.h: Improve docs.
3379         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3380         and namespaces.
3381
3382         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3383         (std::experimental): Add docs.
3384         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3385         namespace to nothing when generating docs.
3386         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3387         * include/std/chrono (std::chrono): Likewise.
3388         * include/std/functional (std::placeholders): Likewise.
3389         * include/std/thread (std::this_thread): Likewise.
3390
3391         * include/parallel/settings.h: Fix Doxygen markup.
3392
3393         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3394         anything unless PB_DS_CLASS_C_DEC is defined.
3395         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3396         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3397         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3398         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3399         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3400         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3401         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3402         Likewise.
3403         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3404         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3405         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3406         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3407         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3408         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3409         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3410         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3411         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3412         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3413         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3414         Likewise.
3415         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3416         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3417         Likewise.
3418         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3419         Likewise.
3420
3421         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3422         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3423         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3424         Doxygen expands.
3425
3426 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3427
3428         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3429         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3430         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3431         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3432         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3433         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3434         Likewise.
3435         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3436         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3437         Likewise.
3438
3439 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3440
3441         PR libstdc++/61761
3442         * include/std/complex (__complex_proj): Return parameter unchanged.
3443         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3444         floating-point types to take std::complex arguments.
3445         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3446         floating-point types.
3447         * testsuite/26_numerics/complex/proj.cc: New test.
3448
3449 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3450
3451         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3452         to _Lock_policyE[012].
3453         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3454
3455 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3456
3457         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3458         macros accidentally left in.
3459         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3460         unnecessary -lstdc++fs option. Fix test for mingw.
3461         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3462         Fix test for mingw.
3463
3464 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3465
3466         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3467
3468 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3469
3470         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3471
3472         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3473         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3474
3475         PR libstdc++/71312
3476         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3477
3478         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3479         attribute.
3480
3481         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3482         class template and partial specialization.
3483
3484         PR libstdc++/87982
3485         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3486         an integral type.
3487         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3488         functions to convert a value to an integral type.
3489         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3490         (fill_n): Convert _Size parameter to an integral type.
3491         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3492         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3493         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3494         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3495         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3496         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3497
3498 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3499
3500         Adding noexcept-specification on tuple constructors (LWG 2899)
3501         * libstdc++-v3/include/std/tuple:
3502         (tuple()): Add noexcept-specification.
3503         (tuple(const _Elements&...)): Likewise
3504         (tuple(_UElements&&...)): Likewise
3505         (tuple(const tuple<_UElements...>&)): Likewise
3506         (tuple(tuple<_UElements...>&&)): Likewise
3507         (tuple(const _T1&, const _T2&)): Likewise
3508         (tuple(_U1&&, _U2&&)): Likewise
3509         (tuple(const tuple<_U1, _U2>&): Likewise
3510         (tuple(tuple<_U1, _U2>&&): Likewise
3511         (tuple(const pair<_U1, _U2>&): Likewise
3512         (tuple(pair<_U1, _U2>&&): Likewise
3513         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
3514
3515 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
3516
3517         PR libstdc++/87106
3518         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
3519         arguments with __restrict.
3520
3521 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
3522
3523         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
3524
3525 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
3526
3527         * include/experimental/bits/fs_path.h
3528         (path::_S_convert_loc<_InputIterator>): Create const std::string to
3529         avoid redundant call to _S_convert_loc with non-const pointers.
3530
3531         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
3532         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
3533         * testsuite/21_strings/basic_string/hash/hash.cc
3534         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
3535         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
3536         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
3537
3538         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
3539         wstring::_M_replace_dispatch with more specific patterns.
3540         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
3541         Create const std::string to avoid redundant call to _S_convert_loc
3542         with non-const pointers.
3543         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
3544         avoid unnecessary basic_string::assign instantiations.
3545
3546         * include/std/memory (__uses_alloc_args): Add string-literal to
3547         static_assert, to match the one in __uses_alloc.
3548         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
3549         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
3550         for recursive uses-allocator construction of nested pairs.
3551         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
3552         comment.
3553
3554 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
3555
3556         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
3557         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
3558         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3559         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3560
3561         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3562         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3563         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
3564         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3565         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3566         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3567         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3568
3569 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
3570
3571         PR libstdc++/90239
3572         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
3573         * include/std/scoped_allocator [__cplusplus > 201703L]
3574         (scoped_allocator_adaptor::construct): Define in terms of
3575         uses_allocator_construction_args, as per P0591R4.
3576         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
3577         * testsuite/util/testsuite_allocator.h: Remove name of unused
3578         parameter.
3579
3580 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
3581
3582         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
3583         * doc/html/*: Regenerate.
3584
3585         * include/bits/fs_path.h (operator<, operator<=, operator>)
3586         (operator>=, operator==, operator!=): Make hidden friends, as per
3587         LWG 3065.
3588         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
3589         string type in test.
3590         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3591
3592         * include/std/any (any::any(ValueType&&)): Use __and_v.
3593         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
3594         Likewise.
3595
3596         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
3597         as per P0777R1.
3598         * include/std/type_traits (__result_of_memfun): Use remove_reference
3599         instead of __remove_cvref_t and remove redundant is_same check.
3600         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
3601
3602         * include/experimental/string_view (basic_string_view::pointer)
3603         (basic_string_view::reference): Fix to refer to non-const value_type.
3604         * include/bits/basic_string.h (basic_string): Use __sv_check and
3605         __sv_limit instead of basic_string_view::_M_check and
3606         basic_string_view::_M_limit.
3607         * include/std/string_view (__sv_check, __sv_limit): New
3608         helper functions to replace basic_string_view::_M_check and
3609         basic_string_view::_M_limit.
3610         (basic_string_view): Add static assertions to enforce ill-formed
3611         requirement for traits_type::char_type from P1148R0, and to enforce
3612         required properties of char-like types.
3613         (basic_string_view::pointer, basic_string_view::reference): Fix to
3614         refer to non-const value_type.
3615         (basic_string_view::operator[], basic_string_view::at)
3616         (basic_string_view::front, basic_string_view::back)
3617         (basic_string_view::data): Use const_reference and const_pointer
3618         typedefs for return types.
3619         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
3620         (hash<wstring_view>): Fix argument_type typedef.
3621         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3622         char/1.cc: Fix expected return type of basic_string_view::data().
3623         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
3624         wchar_t/1.cc: Likewise.
3625         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3626         char/1.cc: Likewise.
3627         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
3628         wchar_t/1.cc: Likewise.
3629         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
3630         New test.
3631         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
3632         Check reference and pointer typedefs.
3633         * testsuite/experimental/string_view/requirements/typedefs.cc:
3634         Likewise.
3635         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
3636         Fix expected return type of basic_string_view::data().
3637         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
3638         1.cc: Likewise.
3639         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
3640         Likewise.
3641         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
3642         1.cc: Likewise.
3643
3644         PR libstdc++/90220
3645         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
3646         Avoid a runtime check for types that can never be stored in std::any.
3647         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3648         array types.
3649
3650         PR libstdc++/90220 (partial)
3651         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
3652         not attempt ill-formed static_cast to pointers to non-object types.
3653         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
3654         function types.
3655
3656         * testsuite/20_util/variant/run.cc: Catch exception by reference to
3657         prevent -Wcatch-value warning.
3658
3659         * include/std/variant (__variant_construct): Use template parameter
3660         type instead of equivalent decltype-specifier.
3661         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
3662         Replace forward with move.
3663         (_Move_ctor_base<false, Types...>::_M_destructive_move)
3664         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
3665         (_Move_ctor_base<true, Types...>::_M_destructive_move)
3666         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
3667         index after construction succeeds.
3668         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
3669         if-constexpr checks that are always true. Use __remove_cvref_t instead
3670         of remove_reference so that is_nothrow_move_constructible check
3671         doesn't use a const rvalue parameter. In the potentially-throwing case
3672         construct a temporary and move assign it, as per LWG 2904.
3673         (_Move_assign_base<false, Types...>::operator=): Remove redundant
3674         if-constexpr checks that are always true. Use emplace as per LWG 2904.
3675         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
3676         construct a temporary and move assign from it, as per LWG 2904.
3677         * testsuite/20_util/variant/exception_safety.cc: Check that
3678         assignment operators have strong exception safety guarantee.
3679
3680 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
3681
3682         Document PSTL linker flags
3683
3684         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
3685
3686 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3687
3688         * include/std/variant (__detail::__variant::_Traits): Make
3689         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
3690         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
3691         P0602R4.
3692         (__detail::__variant::_Copy_assign_alias): Only depend on
3693         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
3694         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
3695         move assignment operators.
3696
3697         PR libstdc++/90165
3698         * include/std/variant (variant::__not_self): New helper for the
3699         is_same_v<remove_cvref_t<T>, variant>==false constraints.
3700         (variant::__to_type_impl): Remove.
3701         (variant::__to_type): Add default argument to check pack size, instead
3702         of using __to_type_impl.
3703         (variant::__accepted_type): Add default argument using __not_self.
3704         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
3705         for variant(T&&) constructor constraint.
3706         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
3707         Extract __accepted_type into a named template parameter for reuse in
3708         other constraints and in the exception specification.
3709         (variant::variant(in_place_type_t<T>, Args&&...))
3710         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
3711         (variant::variant(in_place_index_t<T>, Args&&...))
3712         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
3713         (variant::operator=T&&)): Remove redundant && from trait arguments.
3714         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
3715         isn't used for in_place_type or in_place_index arguments.
3716
3717         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
3718         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
3719         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
3720
3721 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
3722             Bernd Edlinger  <bernd.edlinger@hotmail.de>
3723             Jakub Jelinek  <jakub@redhat.com>
3724
3725         PR target/89093
3726         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
3727         general-regs-only target attribute for ARM.
3728
3729 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
3730
3731         PR libstdc++/87431
3732         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
3733         specialization also depend on is_nothrow_move_constructible.
3734         * include/std/variant (__detail::__variant::__never_valueless()):
3735         Only true if the variant would have a move assignment operator.
3736         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
3737         Check __never_valueless<T...>().
3738         (variant::emplace): Only perform non-throwing move assignments
3739         for never-valueless alternatives if the variant has a move assignment
3740         operator.
3741         * testsuite/20_util/variant/compile.cc: Check that never-valueless
3742         types can be emplaced into non-assignable variants.
3743         * testsuite/20_util/variant/run.cc: Check that never-valueless types
3744         don't get copied when emplaced into non-assignable variants.
3745
3746         * include/std/variant (__detail::__variant::__ref_cast): Remove
3747         unused function.
3748         (__detail::__variant::_Uninitialized::_M_get)
3749         (__detail::__variant::__get)
3750         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
3751
3752 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
3753
3754         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
3755         to Darwin10.
3756         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
3757         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
3758         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
3759         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
3760
3761 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3762
3763         Delegate PSTL configuration to pstl/pstl_config.h
3764
3765         * include/bits/c++config: Remove explicit PSTL configuration
3766         macros and use definitions from <pstl/pstl_config.h>.
3767
3768 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
3769
3770         Cleanup algorithm implementations
3771         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
3772         execution policy.
3773         (mismatch): Forward execution policy.
3774         (equal): Qualify call to std::equal().
3775         (partial_sort): Forward execution policy.
3776         (inplace_merge): Forward execution policy.
3777
3778 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
3779
3780         Improve implementation of parallel equal()
3781         * include/pstl/algorithm_impl.h
3782         (__internal::__brick_equal): use "4 iterator" version of
3783         std::equal().
3784         (__internal::__brick_equal): use simd for random access
3785         iterators on unsequenced execution policies.
3786         (__internal::__pattern_equal): add "4 iterator" version
3787         (__internal::__pattern_equal): dispatch to simd __brick_equal
3788         for vector-only execution policies.
3789         (__internal::__pattern_equal): dispatch to __parallel_or for
3790         parallel execution policies.
3791         * include/pstl/glue_algorithm_impl.h
3792         (std::equal): dispatch to "4 iterator" version of
3793         __internal::__pattern_equal().
3794
3795 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
3796
3797         PR libstdc++/90105
3798         * include/bits/forward_list.h (operator==): Do not use operator!= to
3799         compare elements.
3800         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
3801         earlier in the list, so that sort is stable.
3802         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
3803         * testsuite/23_containers/forward_list/comparable.cc: Test with
3804         types that meet the minimum EqualityComparable and LessThanComparable
3805         requirements. Remove irrelevant comment.
3806
3807         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
3808         Do not depend on whether all alternative types are move constructible.
3809         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
3810         from the operand when deciding whether to perform the assignment.
3811         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
3812         with deleted move constructor and deleted move assignment operator.
3813         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
3814         behaviour of variants with DeletedMoves as an alternative.
3815         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
3816         (move_ctor, move_assign): Check that moving a variant with a
3817         DeletedMoves alternative falls back to copying instead of moving.
3818
3819         * testsuite/20_util/variant/compile.cc: Remove empty string literals
3820         from static_assert declarations.
3821
3822         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
3823         actually match its name.
3824         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
3825         (test_swap()): Fix result for MoveCtorOnly and check
3826         MoveCtorAndSwapOnly.
3827
3828         * include/std/optional (optional::value_or(U&&) &&): Add missing
3829         constexpr specifier.
3830         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
3831         for disengaged optionals and rvalue optionals.
3832         * testsuite/20_util/optional/observers/4.cc: Likewise.
3833
3834 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
3835
3836         * include/pstl/algorithm_impl.h: Uglify identfiers.
3837         * include/pstl/numeric_impl.h:  Uglify identfiers.
3838         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
3839
3840 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
3841
3842         * include/bits/c++config:
3843         Add definition for __PSTL_ASSERT.
3844         Add definition for __PSTL_ASSERT_MSG.
3845         * include/pstl/algorithm_impl.h: Replace use of assert().
3846         * include/pstl/numeric_impl.h: Replace use of assert().
3847         * include/pstl/parallel_backend_tbb.h:
3848         Replace use of assert().
3849         Replace use of __TBB_ASSERT().
3850         * include/pstl/parallel_backend_utils.h: Replace use of assert().
3851
3852 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
3853
3854         PR libstdc++/90046
3855         * src/c++17/memory_resource.cc
3856         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
3857         needed to allow placing a _Chunk at the end of the buffer.
3858         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
3859
3860 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
3861
3862         * doc/xml/faq.xml: Add information about emergency EH pool.
3863         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
3864         Move outdated information on mt_allocator to a separate section.
3865         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
3866         doesn't affect the default allocator.
3867
3868         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
3869         typo.
3870
3871         PR libstdc++/89851
3872         * testsuite/20_util/variant/89851.cc: New test.
3873
3874 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
3875
3876         * include/std/variant: Adjust whitespace. Add comments.
3877         (_Multi_array): Leave primary template undefined.
3878         (_Multi_array<_Tp>): Define partial specialization for base case of
3879         recursion.
3880         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
3881         which is always a reference.
3882         (__gen_vtable::_S_apply()): Remove function, inline body into
3883         default member initializer.
3884         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
3885
3886         * include/std/variant (__variant_idx_cookie): Add member type.
3887         (__visitor_result_type): Remove.
3888         (__do_visit): Use invoke_result instead of __visitor_result_type.
3889         * testsuite/20_util/variant/visit.cc: New test.
3890
3891         PR libstdc++/90008
3892         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
3893         unused capture.
3894         * testsuite/20_util/variant/90008.cc: New test.
3895
3896 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
3897
3898         * include/pstl/algorithm_impl.h: Add namespace qualification.
3899         * include/pstl/execution_defs.h: Add namespace qualification.
3900         * include/pstl/execution_impl.h: Add namespace qualification.
3901         * include/pstl/numeric_impl.h: Add namespace qualification.
3902         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
3903         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
3904         * include/pstl/parallel_backend_utils.h: Include <cassert>.
3905
3906 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
3907
3908         Fix visit<R> for variant.
3909         * include/std/variant (__do_visit): Add a template parameter
3910         for enforcing same return types for visit.
3911         (__gen_vtable_impl): Likewise.
3912         (_S_apply_single_alt): Adjust.
3913         (__visit_invoke_impl): New. Handle casting to void.
3914         (__do_visit_invoke): New. Enforces same return types.
3915         (__do_visit_invoke_r): New. Converts return types.
3916         (__visit_invoke): Adjust.
3917         (__gen_vtable):  Add a template parameter for enforcing
3918         same return types for visit.
3919         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
3920         different return types.
3921         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
3922         visitors with different return types don't accidentally
3923         compile with regular visitation.
3924
3925 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
3926
3927         * testsuite/27_io/filesystem/iterators/caching.cc: Add
3928         dg-require-filesystem-ts.
3929
3930 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
3931
3932         * doc/xml/manual/status_cxx2020.xml: Update status.
3933         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
3934         * testsuite/20_util/variant/visit_r.cc: New test.
3935
3936         * include/bits/fs_dir.h (directory_iterator::operator*)
3937         (directory_iterator::operator->): Add noexcept.
3938         (operator==, operator!=): Replace namespace-scope equality operators
3939         for directory iterators with hidden friends.
3940
3941         PR libstdc++/89986
3942         * config/abi/pre/gnu.ver: Add missing exports.
3943         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
3944         increment member.
3945
3946         * config/abi/pre/gnu.ver: Export new symbols.
3947         * include/bits/fs_dir.h (recursive_directory_iterator::options())
3948         (recursive_directory_iterator::recursion_pending())
3949         (recursive_directory_iterator::disable_recursion_pending()): Remove
3950         inline definitions. Make noexcept.
3951         (recursive_directory_iterator::depth())
3952         (recursive_directory_iterator::operator*())
3953         (recursive_directory_iterator::operator->()): Make noexcept.
3954         (recursive_directory_iterator::_M_options)
3955         (recursive_directory_iterator::_M_pending): Remove data members.
3956         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
3957         (recursive_directory_iterator::recursive_directory_iterator): Remove
3958         ctor-initializer. Use new constructor for _Dir_stack.
3959         (recursive_directory_iterator::options())
3960         (recursive_directory_iterator::recursion_pending())
3961         (recursive_directory_iterator::disable_recursion_pending()): Add
3962         non-inline definitions.
3963         (recursive_directory_iterator::depth()): Make noexcept.
3964         (recursive_directory_iterator::increment(error_code&))
3965         (recursive_directory_iterator::pop(error_code&)): Adjust to new
3966         location of options and recursion_pending members.
3967         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
3968         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
3969         user-declared move constructor and assignment operator, to make the
3970         type move-only.
3971
3972         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
3973         d_type == DT_UNKNOWN immediately.
3974         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
3975         handling here.
3976         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
3977
3978         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
3979         assignment.
3980         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
3981         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
3982         assignment.
3983
3984         PR libstdc++/87431 (again)
3985         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
3986         Define partial specialization for basic_string.
3987         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
3988         shared_ptr and weak_ptr.
3989         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
3990         function.
3991         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
3992         vector.
3993         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
3994         unique_ptr.
3995         * include/debug/vector (_Never_valueless_alt): Likewise for debug
3996         vector.
3997         * include/std/any (_Never_valueless_alt): Define explicit
3998         specialization for any.
3999         * include/std/variant (_Never_valueless_alt): Define primary template.
4000         (__never_valueless): Use _Never_valueless_alt instead of
4001         is_trivially_copyable.
4002         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
4003         initializations to avoid try-catch overhead. Add special case for
4004         scalars produced by potentially-throwing conversions. Use
4005         _Never_valueless_alt instead of is_trivially_copyable for the
4006         remaining strong exception-safety cases.
4007         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
4008         * testsuite/20_util/variant/87431.cc: Run both test functions.
4009         * testsuite/20_util/variant/exception_safety.cc: New test.
4010         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
4011         so the variant becomes valueless.
4012
4013 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
4014
4015         PR libstdc++/85184
4016         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
4017         Remove assertions.
4018         (variant::emplace<_Tp>): Return result of emplace<N> directly.
4019
4020         * include/std/string (__hash_string_base): New class template defining
4021         operator() for hashing strings.
4022         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
4023         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
4024         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
4025         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
4026
4027 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
4028
4029         Use single-visitation in variant assignment and swap and relops.
4030         Also use indices instead of types when checking whether
4031         variants hold the same thing.
4032         * include/std/variant (__do_visit): Add a template parameter
4033         for index visitation, invoke with indices if index visitation
4034         is used.
4035         (__variant_idx_cookie): New.
4036         (__visit_with_index): Likewise.
4037         (_Copy_assign_base::operator=): Do single-visitation with
4038         an index visitor.
4039         (_Move_assign_base::operator=): Likewise.
4040         (_Extra_visit_slot_needed): Adjust.
4041         (__visit_invoke): Call with indices if it's an index visitor.
4042         (relops): Do single-visitation with an index visitor.
4043         (swap): Likewise.
4044         (__visitor_result_type): New.
4045
4046 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
4047
4048         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
4049
4050 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
4051
4052         Don't revisit a variant we are already visiting.
4053         * include/std/variant (__variant_construct_single): New.
4054         (__variant_construct): Use it.
4055         (_M_destructive_move): Likewise.
4056         (_M_destructive_copy): Likewise.
4057         (_Copy_assign_base::operator=): Adjust.
4058         (_Move_assign_base::operator=): Likewise.
4059         (swap): Likewise.
4060
4061 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
4062
4063         PR libstdc++/85965
4064         * include/bits/hashtable.h (_Hashtable): Move static assertions to
4065         destructor so they are not evaluated until the _Key type is complete.
4066         * include/bits/stl_tree.h (_Rb_tree): Likewise.
4067         * testsuite/23_containers/set/85965.cc: New test.
4068         * testsuite/23_containers/unordered_set/85965.cc: New test.
4069         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
4070         with regexp matching the corresponding _Rb_tree specialization.
4071         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
4072         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
4073         * testsuite/23_containers/set/48101_neg.cc: Likewise.
4074         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
4075         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
4076         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
4077         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
4078
4079 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4080
4081         PR libstdc++/89825
4082         Fix based on a suggestion by Antony Polukhin.
4083         * include/std/variant (__never_valueless): New.
4084         (_M_valid): Use it.
4085         (_Extra_visit_slot_needed): New.
4086         (_Multi_array): Use it.
4087         (_S_apply_all_alts): Likewise.
4088
4089 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4090
4091         PR libstdc++/89824
4092         Fix based on a suggestion by Antony Polukhin.
4093         * include/std/variant (__gen_vtable): Don't reserve an
4094         additional table slot, _Multi_array already does that.
4095
4096 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4097
4098         PR libstdc++/89816
4099         Fix based on a suggestion by Antony Polukhin.
4100         * include/std/variant (__variant_construct): Capture a pointer
4101         to the storage and visit just one variant.
4102
4103 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4104
4105         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4106         Doxygen-generated pages with unstable URL.
4107         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4108         * doc/xml/manual/extensions.xml: Likewise.
4109         * doc/xml/manual/parallel_mode.xml: Likewise.
4110         * doc/xml/manual/support.xml: Likewise.
4111
4112         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4113         avoid -Wconversion warnings.
4114
4115 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4116
4117         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4118         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4119         (allstamped): Add stamp-pstl.
4120         (install-headers): Add ptsl_builddir.
4121         * include/Makefile.in: Regenerate.
4122         * include/bits/c++config: Add pstl configuration.
4123         * include/pstl/LICENSE.txt: New file.
4124         * include/pstl/algorithm_fwd.h: New file.
4125         * include/pstl/algorithm_impl.h: New file.
4126         * include/pstl/execution_defs.h: New file.
4127         * include/pstl/execution_impl.h: New file.
4128         * include/pstl/glue_algorithm_defs.h: New file.
4129         * include/pstl/glue_algorithm_impl.h: New file.
4130         * include/pstl/glue_execution_defs.h: New file.
4131         * include/pstl/glue_memory_defs.h: New file.
4132         * include/pstl/glue_memory_impl.h: New file.
4133         * include/pstl/glue_numeric_defs.h: New file.
4134         * include/pstl/glue_numeric_impl.h: New file.
4135         * include/pstl/memory_impl.h: New file.
4136         * include/pstl/numeric_fwd.h: New file.
4137         * include/pstl/numeric_impl.h: New file.
4138         * include/pstl/parallel_backend.h: New file.
4139         * include/pstl/parallel_backend_tbb.h: New file.
4140         * include/pstl/parallel_backend_utils.h: New file.
4141         * include/pstl/parallel_impl.h: New file.
4142         * include/pstl/pstl_config.h: New file.
4143         * include/pstl/unseq_backend_simd.h: New file.
4144         * include/pstl/utils.h: New file.
4145         * include/std/algorithm: Include parallel algorithm implementations.
4146         * include/std/execution: New file.
4147         * include/std/memory: Include parallel algorithm implementations.
4148         * include/std/numeric: Include parallel algorithm implementations.
4149         * include/std/version: Add parallel algorithms feature test macro.
4150         * testsuite/util/pstl/pstl_test_config.h: New file.
4151         * testsuite/util/pstl/test_utils.h: New file.
4152         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4153         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4154         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4155         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4156         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4157         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4158         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4159         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4160         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4161         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4162         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4163         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4164         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4165         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4166         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4167         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4168         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4169         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4170         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4171         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4172         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4173         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4174         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4175         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4176         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4177         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4178         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4179         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4180         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4181         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4182         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4183         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4184         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4185         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4186         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4187         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4188         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4189         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4190         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4191         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4192         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4193         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4194         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4195         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4196         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4197         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4198         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4199         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4200         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4201         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4202         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4203         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4204         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4205         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4206         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4207         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4208         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4209         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4210         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4211         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4212         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4213         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4214         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4215         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4216         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4217         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4218         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4219         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4220         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4221         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4222         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4223         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4224         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4225         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4226         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4227         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4228         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4229         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4230         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4231         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4232         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4233         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4234         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4235         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4236         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4237         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4238         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4239         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4240         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4241         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4242         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4243         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4244         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4245         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4246         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4247         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4248         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4249         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4250         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4251         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4252         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4253         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4254         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4255         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4256         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4257         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4258
4259 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4260
4261         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4262         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4263         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4264         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4265         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4266         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4267         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4268         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4269         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4270         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4271         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4272         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4273         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4274         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4275         when the special functions IS is enabled, not for C++17.
4276         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4277         Replace with ...
4278         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4279         without checks for special functions in C++17.
4280         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4281         New test.
4282
4283         PR libstdc++/88066
4284         * include/backward/hash_map: Use <> for includes not "".
4285         * include/backward/hash_set: Likewise.
4286         * include/backward/strstream: Likewise.
4287         * include/tr1/bessel_function.tcc: Likewise.
4288         * include/tr1/exp_integral.tcc: Likewise.
4289         * include/tr1/legendre_function.tcc: Likewise.
4290         * include/tr1/modified_bessel_func.tcc: Likewise.
4291         * include/tr1/riemann_zeta.tcc: Likewise.
4292
4293 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4294
4295         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4296         of extension allocators.
4297         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4298         Document new headers in 7.2, 8.1 and 9.1 releases.
4299         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4300         * doc/html/*: Regenerate.
4301
4302 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4303
4304         PR libstdc++/89461
4305         * testsuite/lib/libstdc++.exp: Locate libatomic.
4306         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4307         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4308         libatomic options.
4309         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4310         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4311         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4312         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4313
4314 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4315
4316         PR libstdc++/89460
4317         * configure.ac: Check for sockatmark.
4318         * crossconfig.m4: Check for sockatmark.
4319         * config.h.in: Regenerate.
4320         * configure: Regenerate.
4321         * include/experimental/internet (address_v4::_S_hton): Rename
4322         overloaded functions to _S_hton_16 and _S_ntoh_16.
4323         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4324         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4325         * include/experimental/socket (basic_socket::at_mark): Check
4326         _GLIBCXX_HAVE_SOCKATMARK.
4327
4328         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4329         const variables instead of macros.
4330
4331         PR libstdc++/89629
4332         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4333         Use correct type for len_aligned.
4334         * testsuite/20_util/hash/89629.cc: New test.
4335
4336 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4337
4338         PR libstdc++/89641
4339         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4340         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4341         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4342         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4343         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4344         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4345         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4346         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4347         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4348         memory_order_seq_cst to int.
4349
4350 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4351
4352         * doc/xml/manual/using.xml: Use link element instead of xref.
4353         * doc/html/*: Regenerate.
4354
4355         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4356
4357 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4358
4359         PR libstdc++/89477
4360         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4361         parameters in deduction guides.
4362         * include/debug/multimap.h (multimap): Likewise.
4363         * include/debug/set.h (multimap): Likewise.
4364         * include/debug/multiset.h (multimap): Likewise.
4365         * include/debug/unordered_map (unordered_map): Likewise.
4366         (unordered_multimap): Likewise.
4367         * include/debug/unordered_set (unordered_set): Likewise.
4368         (unordered_multiset): Likewise.
4369
4370         PR libstdc++/89608
4371         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4372         Invalidate all iterators in case of rehash.
4373         (unordered_multimap<>::_M_check_rehashed): Likewise.
4374         * include/debug/unordered_set
4375         (unordered_set<>::_M_check_rehashed): Likewise.
4376         (unordered_multiset<>::_M_check_rehashed): Likewise.
4377         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4378
4379 2019-03-07  Andreas Schwab  <schwab@suse.de>
4380
4381         * config/abi/post/riscv64-linux-gnu: New directory.
4382         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4383
4384 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4385
4386         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4387         compile test to run. Fix typo.
4388
4389         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4390         * doc/html/*: Regenerate.
4391
4392         P0356R5 Simplified partial function application
4393         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4394         helpers for bind_front.
4395         (bind_front, __cpp_lib_bind_front): Define.
4396         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4397
4398 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4399
4400         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4401         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4402         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4403         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4404
4405 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4406
4407         PR libstdc++/86655 - std::assoc_legendre should not constrain
4408         the value of m (or x).
4409         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4410         __sph_legendre): If degree > order Don't throw, return 0.
4411         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4412         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4413         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4414         * testsuite/tr1/5_numerical_facilities/special_functions/
4415         02_assoc_legendre/pr86655.cc: New test.
4416         * testsuite/tr1/5_numerical_facilities/special_functions/
4417         22_sph_legendre/pr86655.cc: New test.
4418
4419 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4420
4421         Rewrite variant.
4422         Also PR libstdc++/85517
4423         * include/std/variant (__do_visit): New.
4424         (__variant_cast): Likewise.
4425         (__variant_cookie): Likewise.
4426         (__erased_*): Remove.
4427         (_Variant_storage::_S_vtable): Likewise.
4428         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4429         (_Variant_storage::__M_reset): Adjust.
4430         (__variant_construct): New.
4431         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4432         __variant_construct.
4433         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4434         (_Move_ctor_base::__M_destructive_copy): New.
4435         (_Move_ctor_base::__M_destructive_move): Adjust to use
4436         __variant_construct.
4437         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4438         (_Copy_assign_alias): Adjust to check both copy assignment
4439         and copy construction for triviality.
4440         (_Move_assign_base::operator=): Adjust to use __do_visit.
4441         (_Multi_array): Add support for visitors that accept and return
4442         a __variant_cookie.
4443         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4444         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4445         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4446         a __variant_cookie temporary for a variant that is valueless and..
4447         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4448         (__gen_vtable::_Array_type): Conditionally make space for
4449         the __variant_cookie visitor case.
4450         (__variant_construct_by_index): New.
4451         (get_if): Adjust to use std::addressof.
4452         (relops): Adjust to use __do_visit.
4453         (variant): Add __variant_cast and __variant_construct_by_index
4454         as friends.
4455         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4456         instead of self-destruction.
4457         (variant::swap): Adjust to use __do_visit.
4458         (visit): Reimplement in terms of __do_visit.
4459         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4460         * testsuite/20_util/variant/compile.cc: Adjust.
4461         * testsuite/20_util/variant/run.cc: Likewise.
4462
4463 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4464
4465         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4466         constant.
4467         * testsuite/experimental/feat-char8_t.cc: Likewise.
4468
4469          * include/std/type_traits [C++20] (is_bounded_array)
4470          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4471          Define.
4472          * testsuite/20_util/is_bounded_array/requirements/
4473          explicit_instantiation.cc: New test.
4474          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4475          test.
4476          * testsuite/20_util/is_bounded_array/value.cc: New test.
4477          * testsuite/20_util/is_unbounded_array/requirements/
4478          explicit_instantiation.cc: New test.
4479          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4480          * test.
4481          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4482
4483         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4484         Add constexpr.
4485         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4486
4487 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4488
4489         * include/c_compatibility/math.h [C++20] (lerp): Add using
4490         declaration.
4491         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4492         (__lerp): Define function template to implement lerp.
4493         (lerp(float, float, float), lerp(double, double, double))
4494         (lerp(long double, long double, long double)): Define for C++20.
4495         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4496         (midpoint(T, T), midpoint(T*, T*)): Define.
4497         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4498         * testsuite/26_numerics/lerp.cc: New test.
4499         * testsuite/26_numerics/midpoint/floating.cc: New test.
4500         * testsuite/26_numerics/midpoint/integral.cc: New test.
4501         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4502
4503 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
4504
4505         PR libstdc++/88996 Implement P0439R0
4506         Make std::memory_order a scoped enumeration.
4507         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
4508         add variables for the old enumerators.  Adjust calls.
4509         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
4510         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
4511
4512 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
4513
4514         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
4515         directive.
4516
4517         * include/std/memory_resource (polymorphic_allocator): Add default
4518         template argument for C++20.
4519         (polymorphic_allocator::allocate_bytes)
4520         (polymorphic_allocator::deallocate_bytes)
4521         (polymorphic_allocator::allocate_object)
4522         (polymorphic_allocator::deallocate_object)
4523         (polymorphic_allocator::new_object)
4524         (polymorphic_allocator::delete_object): New member functions for
4525         C++20.
4526         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
4527         test.
4528
4529 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
4530
4531         PR libstdc++/89562
4532         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
4533         mode for mingw.
4534
4535 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
4536
4537         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
4538         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
4539
4540         * include/std/memory (uses_allocator_construction_args): New set of
4541         overloaded functions.
4542         (make_obj_using_allocator, uninitialized_construct_using_allocator):
4543         New functions.
4544         * include/std/memory_resource (polymorphic_allocator::construct)
4545         [__cplusplus > 201703l]: Replace all overloads with a single function
4546         using uses_allocator_construction_args.
4547         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
4548         test.
4549         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
4550
4551 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
4552
4553         PR libstdc++/89466
4554         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
4555         stylesheet directories before check for xsltproc. Try to use
4556         xmlcatalog to find local stylesheet directory before trying hardcoded
4557         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
4558         check to look for the same stylesheet as doc/Makefile.am uses. Don't
4559         use xsltproc if xmlcatalog fails to find a local stylesheet.
4560         * configure.ac: Check for xmlcatalog.
4561         * Makefile.in: Regenerate.
4562         * configure: Likewise.
4563         * doc/Makefile.in: Likewise.
4564         * include/Makefile.in: Likewise.
4565         * libsupc++/Makefile.in: Likewise.
4566         * po/Makefile.in: Likewise.
4567         * python/Makefile.in: Likewise.
4568         * src/Makefile.in: Likewise.
4569         * src/c++11/Makefile.in: Likewise.
4570         * src/c++17/Makefile.in: Likewise.
4571         * src/c++98/Makefile.in: Likewise.
4572         * src/filesystem/Makefile.in: Likewise.
4573         * testsuite/Makefile.in: Likewise.
4574
4575 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
4576
4577         PR libstdc++/89477
4578         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
4579         container deduction guides.
4580         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
4581         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
4582         parameters in deduction guides.
4583         * include/bits/stl_multimap.h (multimap): Likewise.
4584         * include/bits/stl_multiset.h (multiset): Likewise.
4585         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
4586         * include/bits/stl_set.h (set): Likewise.
4587         * include/bits/stl_stack.h (stack): Likewise.
4588         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
4589         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
4590         constrain parameters in deduction guides.
4591         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
4592         Likewise.
4593         * testsuite/23_containers/map/cons/deduction.cc: Test additional
4594         deduction cases.
4595         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
4596         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
4597         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
4598         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
4599         Likewise.
4600         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
4601         Likewise.
4602         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
4603
4604         PR libstdc++/89416
4605         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
4606         to class template and partial specialization using void_t.
4607         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4608
4609 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
4610
4611         PR libstdc++/89416
4612         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
4613         copy and move members public.
4614
4615 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
4616
4617         * include/std/type_traits (__underlying_type_impl): New helper to
4618         make underlying_type SFINAE-friendly.
4619         (underlying_type): Derive from __underlying_type_impl.
4620         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
4621         test.
4622
4623         PR libstdc++/89446
4624         * include/bits/char_traits.h (__constant_char_array): Check index is
4625         in range before dereferencing.
4626         (char_traits<char>::compare, char_traits<char>::find)
4627         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
4628         immediately if n is zero.
4629         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
4630         Remove workarounds for PR 67026.
4631         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
4632         New test.
4633         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
4634         New test.
4635
4636 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4637
4638         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
4639         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
4640
4641 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
4642
4643         PR libstdc++/89402
4644         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
4645         type to std::size_t and argument to type to long double.
4646
4647 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
4648
4649         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
4650         * config/abi/post/sparc64-linux-gnu: New directory.
4651         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
4652         * config/abi/post/sparc64-linux-gnu/32: New directory.
4653         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
4654
4655 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4656
4657         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
4658         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
4659         test.
4660
4661 2019-02-22  Tom Honermann  <tom@honermann.net>
4662
4663         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
4664         printers for u8string and u8string_view.
4665
4666 2019-02-22  Tom Honermann  <tom@honermann.net>
4667
4668         * testsuite/18_support/byte/ops.cc: Validate
4669         std::to_integer<char8_t>, std::to_integer<char16_t>, and
4670         std::to_integer<char32_t>.
4671         * testsuite/18_support/numeric_limits/dr559.cc: Validate
4672         std::numeric_limits<char8_t>.
4673         * testsuite/18_support/numeric_limits/lowest.cc: Validate
4674         std::numeric_limits<char8_t>::lowest().
4675         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
4676         std::numeric_limits<char8_t>::max_digits10.
4677         * testsuite/18_support/type_info/fundamental.cc: Validate
4678         typeinfo for char8_t.
4679         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
4680         std::from_chars with char8_t.
4681         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
4682         Validate explicit instantiation of std::hash<char8_t>.
4683         * testsuite/20_util/is_integral/value.cc: Validate
4684         std::is_integral<char8_t>.
4685         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
4686         Validate std::make_signed<char8_t>.
4687         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
4688         Validate u8string construction from char8_t sources.
4689         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
4690         std::pmr::u8string.
4691         * testsuite/21_strings/basic_string_view/operations/compare/
4692         char/70483.cc: Validate substr operations on u8string_view.
4693         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
4694         the u8string_view typedef is defined.
4695         * testsuite/21_strings/char_traits/requirements/
4696         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
4697         member functions.
4698         * testsuite/21_strings/char_traits/requirements/
4699         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
4700         constexpr member functions.
4701         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
4702         that the u8string typedef is defined.
4703         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
4704         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
4705         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
4706         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
4707         numbers.
4708         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
4709         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
4710         Likewise.
4711         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
4712         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
4713         Validate std::atomic<char8_t>::is_always_lock_free
4714         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
4715         Update line numbers.
4716         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
4717         Likewise.
4718         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
4719         Likewise.
4720         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
4721         Validate std::experimental::pmr::u8string.
4722         * testsuite/experimental/string_view/typedefs.cc: Validate that the
4723         u8string_view typedef is defined.
4724         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
4725         char32_t to the typelists.
4726
4727 2019-02-22  Tom Honermann  <tom@honermann.net>
4728
4729         * include/ext/typelist.h: Constrain a partial specialization of
4730         typelist::detail::append_ to only match chain<T1,T2>.
4731
4732 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
4733
4734         PR libstdc++/89416
4735         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
4736         class template with class. Replace move and copy member types with
4737         member alias templates, so they are only instantiated when needed.
4738         (__is_copy_insertable, __is_move_insertable): Adjust base class.
4739         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
4740         test for C++11/14/17 as well.
4741         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
4742         test.
4743
4744 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
4745
4746         PR libstdc++/89402
4747         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
4748         _GLIBCXX_PURE to the alias declaration.
4749
4750 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
4751
4752         * testsuite/21_strings/basic_string/literals/types.cc
4753         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
4754         * testsuite/21_strings/basic_string/literals/values.cc
4755         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4756         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
4757         potentially having different type.
4758         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
4759         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
4760         to char.
4761         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
4762         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
4763         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
4764         string literals only using basic character set.
4765         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
4766         u8 literals to char.
4767         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
4768         Test ATOMIC_CHAR8_T_LOCK_FREE.
4769         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
4770         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
4771         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
4772         * testsuite/experimental/string_view/literals/types.cc
4773         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
4774         literal.
4775         * testsuite/experimental/string_view/literals/values.cc
4776         [_GLIBCXX_USE_CHAR8_T]: Likewise.
4777
4778 2019-02-19  Tom Honermann  <tom@honermann.net>
4779
4780         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
4781         from char16_32_t.cc; validates numeric_limits<char8_t>.
4782         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
4783         test cloned from types.cc; validates operator""s for char8_t
4784         returns u8string.
4785         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
4786         test cloned from values.cc; validates construction and comparison
4787         of u8string values.
4788         * testsuite/21_strings/basic_string/requirements/
4789         /explicit_instantiation/char8_t/1.cc: New test cloned from
4790         char16_t/1.cc; validates explicit instantiation of
4791         basic_string<char8_t>.
4792         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
4793         New test cloned from types.cc; validates operator""sv for char8_t
4794         returns u8string_view.
4795         * testsuite/21_strings/basic_string_view/literals/
4796         values-char8_t.cc: New test cloned from values.cc; validates
4797         construction and comparison of u8string_view values.
4798         * testsuite/21_strings/basic_string_view/requirements/
4799         explicit_instantiation/char8_t/1.cc: New test cloned from
4800         char16_t/1.cc; validates explicit instantiation of
4801         basic_string_view<char8_t>.
4802         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
4803         New test cloned from char16_t/65049.cc; validates that
4804         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
4805         * testsuite/21_strings/char_traits/requirements/char8_t/
4806         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
4807         that char_traits<char8_t> member typedefs are present and correct.
4808         * testsuite/21_strings/char_traits/requirements/
4809         explicit_instantiation/char8_t/1.cc: New test cloned from
4810         char16_t/1.cc; validates explicit instantiation of
4811         char_traits<char8_t>.
4812         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
4813         from char16_t.cc: validates
4814         codecvt<char16_t, char8_t, mbstate_t>.
4815         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
4816         from char32_t.cc: validates
4817         codecvt<char32_t, char8_t, mbstate_t>.
4818         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
4819         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
4820         codecvt<char32_t, char8_t, std::mbstate_t>.
4821         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
4822         test cloned from string.cc; validates filesystem::path construction
4823         from char8_t input.
4824         * testsuite/experimental/feat-char8_t.cc: New test; validates that
4825         the __cpp_lib_char8_t feature test macro is defined with the
4826         correct value.
4827         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4828         New test cloned from string.cc; validates filesystem::path
4829         construction from char8_t input.
4830         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
4831         test cloned from types.cc; validates operator""sv for char8_t
4832         returns u8string_view.
4833         * testsuite/experimental/string_view/literals/values-char8_t.cc:
4834         New test cloned from values.cc; validates construction and
4835         comparison of u8string_view values.
4836         * testsuite/experimental/string_view/requirements/
4837         explicit_instantiation/char8_t/1.cc: New test cloned from
4838         char16_t/1.cc; validates explicit instantiation of
4839         basic_string_view<char8_t>.
4840         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
4841         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
4842         enabled.
4843
4844 2019-02-19  Tom Honermann  <tom@honermann.net>
4845
4846         P0482R5 char8_t: Standard library support
4847         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
4848         typeinfo symbols for char8_t.
4849         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
4850         (GLIBCXX_3.4.26): Add symbols for specializations of
4851         numeric_limits and codecvt that involve char8_t.
4852         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
4853         * include/bits/atomic_base.h: Add atomic_char8_t.
4854         * include/bits/basic_string.h: Add std::hash<u8string> and
4855         operator""s(const char8_t*, size_t).
4856         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
4857         __cpp_lib_char8_t.
4858         * include/bits/char_traits.h: Add char_traits<char8_t>.
4859         * include/bits/codecvt.h: Add
4860         codecvt<char16_t, char8_t, mbstate_t>,
4861         codecvt<char32_t, char8_t, mbstate_t>,
4862         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4863         codecvt_byname<char32_t, char8_t, mbstate_t>.
4864         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
4865         recognize char8_t as an integral type.
4866         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
4867         char8_t.
4868         (path::u8string): Return std::u8string when char8_t support is
4869         enabled.
4870         (path::generic_u8string): Likewise.
4871         (path::_S_convert): Handle conversion from char8_t input.
4872         (path::_S_str_convert): Likewise.
4873         * include/bits/functional_hash.h: Add hash<char8_t>.
4874         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
4875         char8_t.
4876         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
4877         for new char8_t specializations.
4878         * include/bits/localefwd.h: Add missing declarations of
4879         codecvt<char16_t, char, mbstate_t> and
4880         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
4881         codecvt<char16_t, char8_t, mbstate_t> and
4882         codecvt<char32_t, char8_t, mbstate_t>.
4883         * include/bits/postypes.h: Add u8streampos
4884         * include/bits/stringfwd.h: Add declarations of
4885         char_traits<char8_t> and u8string.
4886         * include/c_global/cstddef: Add __byte_operand<char8_t>.
4887         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
4888         Recognize char8_t.
4889         (path::u8string): Return std::u8string when char8_t support is
4890         enabled.
4891         (path::generic_u8string): Likewise.
4892         (path::_S_convert): Handle conversion from char8_t input.
4893         (path::_S_str_convert): Likewise.
4894         * include/experimental/string: Add u8string.
4895         * include/experimental/string_view: Add u8string_view,
4896         hash<experimental::u8string_view>, and
4897         operator""sv(const char8_t*, size_t).
4898         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
4899         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
4900         as a character type.
4901         * include/std/limits: Add numeric_limits<char8_t>.
4902         * include/std/string_view: Add u8string_view,
4903         hash<experimental::u8string_view>, and
4904         operator""sv(const char8_t*, size_t).
4905         * include/std/type_traits: Add __is_integral_helper<char8_t>,
4906         __make_unsigned<char8_t>, and __make_signed<char8_t>.
4907         * libsupc++/atomic_lockfree_defines.h: Define
4908         ATOMIC_CHAR8_T_LOCK_FREE.
4909         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
4910         codecvt.cc and limits.cc so that char8_t specializations of
4911         numeric_limits and codecvt and emitted.
4912         * src/c++11/Makefile.in: Likewise.
4913         * src/c++11/codecvt.cc: Define members of
4914         codecvt<char16_t, char8_t, mbstate_t>,
4915         codecvt<char32_t, char8_t, mbstate_t>,
4916         codecvt_byname<char16_t, char8_t, mbstate_t>, and
4917         codecvt_byname<char32_t, char8_t, mbstate_t>.
4918         * src/c++11/limits.cc: Define members of
4919         numeric_limits<char8_t>.
4920         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
4921         locale_init.cc and localename.cc.
4922         * src/c++98/Makefile.in: Likewise.
4923         * src/c++98/locale_init.cc: Add initialization for the
4924         codecvt<char16_t, char8_t, mbstate_t> and
4925         codecvt<char32_t, char8_t, mbstate_t> facets.
4926         * src/c++98/localename.cc: Likewise.
4927         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
4928
4929 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
4930
4931         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
4932         * 27_io/filesystem/operations/resize_file.cc: Likewise.
4933         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
4934
4935 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
4936
4937         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
4938         * doc/html/*: Regenerate.
4939
4940         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
4941         * doc/html/*: Regenerate.
4942
4943         * doc/xml/manual/intro.xml: Document LWG 2586 status.
4944         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
4945         allocator type in is_constructible checks.
4946         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
4947         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
4948         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
4949         problematic type from LWG 2586 discussion.
4950         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
4951         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
4952
4953         * configure.ac: Check for C11 timespec_get function.
4954         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
4955         (openbsd): Likewise
4956         * config.h.in: Regenerate.
4957         * configure: Regenerate.
4958         * include/c_global/ctime (timespec, timespec_get): Add to namespace
4959         std for C++17 and up.
4960
4961         * doc/xml/manual/intro.xml: Document LWG 2537 status.
4962         * include/bits/stl_queue.h
4963         (priority_queue(const Compare&, const Container&, const Alloc&))
4964         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
4965         make_heap.
4966         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
4967
4968         * doc/xml/manual/intro.xml: Document LWG 2566 status.
4969         * include/bits/stl_queue.h (queue, priority_queue): Add static
4970         assertions to enforce LWG 2566 requirement on value_type.
4971         * include/bits/stl_stack.h (stack): Likewise.
4972
4973         PR middle-end/89303
4974         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
4975
4976         * doc/xml/manual/intro.xml: Document LWG 2735 status.
4977         * include/bits/std_abs.h: Add comment about LWG 2735.
4978         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
4979
4980 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
4981
4982         PR libstdc++/89345
4983         * include/std/version [__cpp_impl_destroying_delete]
4984         (__cpp_lib_destroying_delete): Only define for C++2a and later.
4985         * libsupc++/new [__cpp_impl_destroying_delete]
4986         (__cpp_lib_destroying_delete): Likewise.
4987         (destroying_delete_t, destroying_delete): Likewise, but define even
4988         when __cpp_impl_destroying_delete is not defined.
4989         * testsuite/18_support/destroying_delete.cc: New test.
4990
4991 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
4992
4993         PR libstdc++/89023
4994         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
4995         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
4996         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
4997         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
4998
4999 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
5000
5001         PR libstdc++/71044
5002         * include/bits/fs_path.h (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::has_stem, path::has_extension)
5006         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
5007         noexcept.
5008         * src/c++17/fs_path.cc (path::has_root_name)
5009         (path::has_root_directory, path::has_root_path)
5010         (path::has_relative_path, path::has_parent_path)
5011         (path::has_filename, path::_M_find_extension): Add noexcept.
5012
5013 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
5014
5015         PR libstdc++/89102 (partial)
5016         * include/std/type_traits (common_type<>): Define.
5017         (common_type<T>): Derive from common_type<T, T>.
5018         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
5019         Test zero-length template argument list.
5020         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
5021         Test additional single argument cases.
5022         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
5023         Adjust expected error.
5024
5025 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
5026
5027         PR libstdc++/89128
5028         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
5029         guides.
5030         * include/bits/stl_stack.h (stack): Likewise.
5031         * testsuite/23_containers/priority_queue/deduction.cc: New test.
5032         * testsuite/23_containers/queue/deduction.cc: New test.
5033         * testsuite/23_containers/stack/deduction.cc: New test.
5034
5035         PR libstdc++/89194
5036         * include/std/type_traits (__is_convertible_helper)
5037         (__is_convertible_helper<_From, _To, false>): Revert changes to
5038         support is_nothrow_convertible.
5039         (__is_nt_convertible_helper): New helper.
5040         (is_nothrow_convertible): Use __is_nt_convertible_helper.
5041
5042         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
5043         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
5044
5045         PR libstdc++/89130
5046         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
5047         __is_alloc_insertable_impl. Replace single type member with two
5048         members, one for each of copy and move insertable.
5049         (__is_move_insertable): New trait for internal use.
5050         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
5051         (vector::_S_nothrow_relocate(true_type)): New functions to
5052         conditionally check if __relocate_a can throw.
5053         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
5054         on __is_move_insertable.
5055         (vector::_S_do_relocate): New overloaded functions to conditionally
5056         call __relocate_a.
5057         (vector::_S_relocate): New function that dispatches to _S_do_relocate
5058         based on _S_use_relocate.
5059         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5060         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
5061         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
5062
5063         PR libstdc++/89090
5064         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
5065         parameter unnamed. Add message to static assertion.
5066         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5067         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
5068         in C++11 code.
5069
5070 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
5071
5072         PR libstdc++/87106
5073         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
5074         Rename...
5075         (__is_bitwise_relocatable): ... to this.
5076         (__relocate_a_1): Adapt.
5077         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
5078         (__is_bitwise_relocatable): ... to this.
5079
5080 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5081
5082         PR libstdc++/89117
5083         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5084         final component as well as from _M_pathname. Append the dot using
5085         operator+= instead of only to _M_pathname.
5086         (path::_M_find_extension): Reformat slightly.
5087         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5088         Add more test cases.
5089
5090 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5091
5092         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5093
5094 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5095
5096         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5097         constexpr specifiers from arg and proj.
5098
5099         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5100         __shared_ptr instantiations used by gcc4-compatible ABI.
5101
5102         * include/experimental/forward_list (experimental::erase): Qualify
5103         call to erase_if.
5104         * include/experimental/list (experimental::erase): Likewise.
5105         * include/std/forward_list (std::erase): Likewise.
5106         * include/std/list (std::erase): Likewise.
5107
5108         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5109         C++2a.
5110         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5111         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5112         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5113         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5114         * testsuite/ext/array_allocator/26875.cc: Likewise.
5115         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5116         * testsuite/util/replacement_memory_operators.h: Likewise.
5117         * testsuite/util/testsuite_allocator.h: Likewise.
5118
5119         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5120         normal mode vector, even for debug mode.
5121         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5122         Define alias template for normal mode vector.
5123
5124 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5125
5126         PR libstdc++/68737
5127         * config/locale/generic/c_locale.h (__convert_from_v)
5128         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5129         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5130         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5131         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5132
5133 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5134
5135         PR libstdc++/88840
5136         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5137         data member with static member function _S_use_relocate().
5138         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5139         (vector::_M_default_append): Use _S_use_relocate() instead of
5140         __use_relocate.
5141
5142         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5143         sign of results.
5144
5145 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5146
5147         PR libstdc++/88740
5148         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5149         write to stderr instead of using printf.
5150
5151 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5152
5153         PR libstdc++/86590
5154         * include/bits/char_traits.h (__constant_string_p,
5155         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5156         available.
5157
5158 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5159
5160         Implement C++20 P0600r1.
5161         * include/backward/hash_map: Add nodiscard attribute to empty.
5162         * include/backward/hash_set: Likewise.
5163         * backward/hashtable.h: Likewise.
5164         * include/bits/basic_string.h: Likewise.
5165         * include/bits/forward_list.h: Likewise.
5166         * include/bits/hashtable.h: Likewise.
5167         * include/bits/regex.h: Likewise.
5168         * include/bits/stl_deque.h: Likewise.
5169         * include/bits/stl_list.h: Likewise.
5170         * include/bits/stl_map.h: Likewise.
5171         * include/bits/stl_multimap.h: Likewise.
5172         * include/bits/stl_multiset.h: Likewise.
5173         * include/bits/stl_queue.h: Likewise.
5174         * include/bits/stl_set.h: Likewise.
5175         * include/bits/stl_stack.h: Likewise.
5176         * include/bits/stl_tree.h: Likewise.
5177         * include/bits/stl_vector.h: Likewise.
5178         * include/bits/unordered_map.h: Likewise.
5179         * include/bits/unordered_set.h: Likewise.
5180         * include/debug/array: Likewise.
5181         * include/experimental/any: Likewise.
5182         * include/experimental/bits/fs_path.h: Likewise.
5183         * include/experimental/internet: Likewise.
5184         * include/experimental/string_view: Likewise.
5185         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5186         Likewise.
5187         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5188         Likewise.
5189         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5190         Likewise.
5191         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5192         Likewise.
5193         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5194         Likewise.
5195         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5196         Likewise.
5197         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5198         Likewise.
5199         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5200         Likewise.
5201         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5202         info_fn_imps.hpp: Likewise.
5203         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5204         left_child_next_sibling_heap_.hpp: Likewise.
5205         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5206         Likewise.
5207         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5208         Likewise.
5209         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5210         Likewise.
5211         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5212         Likewise.
5213         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5214         Likewise.
5215         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5216         Likewise.
5217         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5218         Likewise.
5219         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5220         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5221         * include/ext/rope: Likewise.
5222         * include/ext/slist: Likewise.
5223         * include/ext/vstring.h: Likewise.
5224         * include/profile/array: Likewise.
5225         * include/std/array: Likewise.
5226         * include/tr1/array: Likewise.
5227         * include/tr1/hashtable.h: Likewise.
5228         * include/tr1/regex: Likewise.
5229         * include/tr2/dynamic_bitset: Likewise.
5230         * include/bits/alloc_traits.h: Add nodiscard attribute to
5231         allocate.
5232         * include/experimental/memory_resource: Likewise.
5233         * include/ext/alloc_traits.h: Likewise.
5234         * include/ext/array_allocator.h: Likewise.
5235         * include/ext/bitmap_allocator.h: Likewise.
5236         * include/ext/debug_allocator.h: Likewise.
5237         * include/ext/extptr_allocator.h: Likewise.
5238         * include/ext/mt_allocator.h: Likewise.
5239         * include/ext/new_allocator.h: Likewise.
5240         * include/ext/pool_allocator.h: Likewise.
5241         * include/ext/throw_allocator.h: Likewise.
5242         * include/std/scoped_allocator: Likewise.
5243         * libsupc++/eh_alloc.cc: Likewise.
5244         * include/std/future: Add nodiscard attribute to async.
5245         * libsupc++/new: Add nodiscard attribute to new.
5246
5247 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5248
5249         PR libstdc++/87514
5250         PR libstdc++/87520
5251         PR libstdc++/88782
5252         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5253         * include/bits/shared_ptr.h
5254         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5255         (allocate_shared): Change to use new tag type.
5256         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5257         Declare new member function.
5258         (_Sp_alloc_shared_tag): Define new type.
5259         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5260         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5261         _Sp_make_shared_tag::_S_eq to check type_info.
5262         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5263         Constrain to prevent being called with _Sp_alloc_shared_tag.
5264         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5265         Replace constructor with ...
5266         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5267         reference parameter so address of the new object can be returned to
5268         the caller. Obtain the allocator from the tag type.
5269         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5270         constructor with ...
5271         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5272         to the __shared_count constructor.
5273         (__allocate_shared): Change to use new tag type.
5274         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5275
5276 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5277
5278         * src/c++17/fs_ops.cc
5279         (equivalent(const path&, const path&, error_code&))
5280         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5281         compare files instead of relying on incomplete info returned by stat.
5282
5283         PR libstdc++/88884
5284         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5285         if the path is already absolute.
5286         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5287         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5288
5289         PR libstdc++/88881
5290         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5291         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5292         of filesystem::exists.
5293         (create_directories(const path&, error_code&)): Add assertions.
5294         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5295         Add workaround for bug in _wstat for paths with trailing slash.
5296         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5297         for expected behaviour on mingw.
5298         * testsuite/experimental/filesystem/operations/create_directories.cc:
5299         Likewise.
5300         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5301         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5302         not test permissions on mingw targets.
5303
5304 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5305
5306         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5307         constructors and open members taking wide strings. Fix patterns for
5308         filesystem::path members to match wstring_view parameters. Add
5309         exports for shared_ptr members used by directory iterators.
5310         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5311         error code parameter if the file doesn't exist.
5312         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5313         Likewise.
5314         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5315         values for mingw targets, where "/" is not an absolute path. Do not
5316         test symlinks on mingw targets.
5317         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5318         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5319         on mingw targets.
5320         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5321         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5322         that each component of the path is created.
5323         * testsuite/experimental/filesystem/operations/create_directories.cc:
5324         Likewise.
5325         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5326         permissions on mingw targets.
5327         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5328         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5329         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5330         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5331         mingw targets.
5332         * testsuite/experimental/filesystem/operations/permissions.cc:
5333         Likewise.
5334         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5335         symlinks or permissions on mingw targets.
5336         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5337         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5338         symlinks on mingw targets.
5339         * testsuite/experimental/filesystem/operations/remove_all.cc:
5340         Likewise.
5341         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5342         permissions on mingw targets.
5343         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5344         test symlinks on mingw targets.
5345         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5346         for mingw targets.
5347
5348 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5349
5350         PR libstdc++/88738
5351         Warn about unused comparisons of shared_ptr/unique_ptr
5352         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5353         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5354         <, <=, >, >= for shared_ptr.
5355         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5356
5357 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5358
5359         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5360         as 201611L, because P0497R0 changes are supported.
5361         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5362
5363         * include/bits/erase_if.h [__cplusplus > 201703L]
5364         (__cpp_lib_erase_if): Only define for C++2a.
5365         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5366         (__cpp_lib_null_iterators): Define.
5367         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5368         (__cpp_lib_null_iterators): Define.
5369         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5370
5371         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5372         status.
5373         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5374         Define.
5375         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5376         changes are supported.
5377         * include/std/optional (__cpp_lib_optional): Likewise.
5378         * include/std/variant (__cpp_lib_variant): Likewise.
5379         * include/std/version [!__STRICT_ANSI__]
5380         (__cpp_lib_uncaught_exceptions): Define as long integer.
5381         [__cplusplus >= 201703L] (__cpp_lib_any)
5382         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5383         (__cpp_lib_variant): Define for C++17.
5384         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5385         as long integer.
5386         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5387         integer.
5388
5389         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5390
5391 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5392
5393         PR libstdc++/88811
5394         PR libstdc++/83306
5395         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5396         before second path.
5397         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5398         test.
5399
5400 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5401
5402         * doc/xml/manual/intro.xml: Include new section.
5403         * doc/xml/manual/status_cxx2017.xml: Document more
5404         implementation-defined properties of the library.
5405         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5406         * doc/html/*: Regenerate.
5407
5408         * include/bits/refwrap.h [__cplusplus > 201703L]
5409         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5410         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5411         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5412         for C++2a.
5413         (reference_wrapper::operator()): Add static assertion.
5414         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5415
5416         * include/std/chrono (duration_values::zero(), duration_values::min())
5417         (duration_values::max()): Add noexcept.
5418         (duration::zero(), duration::min(), duration::max()): Likewise.
5419         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5420         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5421         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5422
5423         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5424
5425 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5426
5427         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5428         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5429
5430 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5431
5432         PR libstdc++/88802
5433         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5434         specialization for C++17 (P0513R0, LWG 2817).
5435         * testsuite/20_util/hash/nullptr.cc: New test.
5436
5437         PR libstdc++/88125
5438         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5439         pattern for std::basic_stringbuf::str().
5440
5441         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5442         basic_ostream::operator<< patterns.
5443
5444 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5445
5446         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5447         test failures on targets with 32-bit time_t.
5448
5449         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5450         * include/std/deque: Likewise.
5451         * include/std/forward_list: Likewise.
5452         * include/std/list: Likewise.
5453         * include/std/string: Likewise.
5454         * include/std/vector: Likewise.
5455         * include/std/version: Likewise.
5456         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5457         * testsuite/23_containers/deque/erasure.cc: Likewise.
5458         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5459         * testsuite/23_containers/list/erasure.cc: Likewise.
5460         * testsuite/23_containers/map/erasure.cc: Likewise.
5461         * testsuite/23_containers/set/erasure.cc: Likewise.
5462         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5463         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5464         * testsuite/23_containers/vector/erasure.cc: Likewise.
5465
5466         * include/experimental/internet [AI_NUMERICSERV]
5467         (resolver_base::numeric_service): Define conditionally.
5468         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5469         conditionally.
5470         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5471         Likewise.
5472
5473 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5474             Jonathan Wakely  <jwakely@redhat.com>
5475
5476         Implement LWG 2221
5477         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5478         (GLIBCXX_3.4.26): Add new exports.
5479         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5480         correct list of sources.
5481         * include/Makefile.in: Regenerate.
5482         * include/std/ostream (operator<<(nullptr_t)): New member function.
5483         * src/c++17/ostream-inst.cc: New file.
5484         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5485         test.
5486
5487 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5488
5489         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5490         of the source file containing the caller.
5491         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5492         directories created by test.
5493         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5494         Likewise.
5495         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5496         Likewise.
5497         * testsuite/experimental/filesystem/iterators/
5498         recursive_directory_iterator.cc: Likewise.
5499
5500 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5501
5502         PR tree-optimization/88775
5503         * include/bits/stl_function.h (greater<_Tp*>::operator(),
5504         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
5505         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
5506         instead of __builtin_constant_p if available.  Don't bother with
5507         the pointer comparison in C++11 and earlier.
5508
5509 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5510
5511         PR other/16615
5512
5513         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
5514         with "cannot".
5515
5516 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
5517
5518         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
5519         for filesystem::path. Give variables more distinctive names.
5520
5521         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
5522         member function to perform non-trivial assignment.
5523         (_Optional_payload_base::_M_move_assign): Likewise.
5524         (_Optional_payload<T, true, false, true>::operator=)
5525         (_Optional_payload<T, true, true, false>::operator=)
5526         (_Optional_payload<T, true, false, false>::operator=): Call
5527         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
5528
5529         PR libstdc++/88204
5530         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
5531         test std::complex<long double> if long double format is IBM128.
5532         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
5533         Likewise.
5534
5535 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5536
5537         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
5538         for old std::unique_ptr layout.
5539         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
5540         to become valueless. Add filesystem::path tests.
5541
5542         PR libstdc++/87855
5543         * include/std/optional (_Optional_payload_base): New class template
5544         for common code hoisted from _Optional_payload specializations. Use
5545         a template for the union, to allow a partial specialization for
5546         types with non-trivial destructors. Add constructors for in-place
5547         initialization to the union.
5548         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
5549         to perform non-trivial copy construction, instead of relying on
5550         non-standard copy elision in a delegating constructor.
5551         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
5552         non-trivial move construction.
5553         (_Optional_payload): Derive from _Optional_payload_base and use it
5554         for everything except the non-trivial assignment operators, which are
5555         defined as needed.
5556         (_Optional_payload<false, C, M>): Derive from the specialization
5557         _Optional_payload<true, false, false> and add a destructor.
5558         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
5559         Forward to corresponding members of _Optional_payload.
5560         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
5561         Hoist common members from _Optional_base.
5562         (_Optional_base): Make all members and base class public.
5563         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
5564         _Optional_base_impl.
5565         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
5566         support for new std::optional layout.
5567         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
5568
5569         PR libstdc++/88066
5570         * include/bits/locale_conv.h: Use <> for includes not "".
5571         * include/ext/random: Likewise.
5572         * include/ext/vstring.h: Likewise.
5573
5574 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
5575
5576         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
5577         (GLIBCXX_3.4.21): Likewise.
5578
5579 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
5580
5581         PR libstdc++/88749
5582         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
5583         to match the one that controls whether utimbuf and utime are declared.
5584
5585 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
5586
5587         PR libstdc++/87787
5588         * include/bits/char_traits.h (char_traits::move): Do not pass null
5589         pointers to memmove.
5590         * include/bits/locale_facets.h
5591         (ctype<char>::widen(const char*, const char*, char*)): Do not
5592         pass null pointers to memcpy.
5593         (ctype<char>::narrow(const char*, const char*, char, char*)):
5594         Likewise.
5595         (ctype<char>::do_widen(const char*, const char*, char*)):
5596         Likewise.
5597         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
5598         Likewise.
5599
5600         * doc/xml/manual/spine.xml: Update copyright years.
5601         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
5602         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
5603         for C++17 filesystem library.
5604         * doc/html/*: Regenerate.
5605
5606         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
5607         * config.h.in: Regenerate.
5608         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
5609         alphabetically and add missing entries for copy_symlink,
5610         hard_link_count, rename, and resize_file.
5611         * configure: Regenerate.
5612         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
5613         used unconditionally.
5614         * src/filesystem/ops-common.h (__gnu_posix::truncate)
5615         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
5616         supports truncating to zero length.
5617         * testsuite/27_io/filesystem/operations/all.cc: New test.
5618         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
5619
5620 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
5621
5622         PR libstdc++/86756
5623         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
5624         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
5625         * config.h.in: Regenerate.
5626         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
5627         remaining std::filesystem types and functions.
5628         * configure: Regenerate.
5629         * src/c++17/Makefile.am: Add C++17 filesystem sources.
5630         * src/c++17/Makefile.in: Regenerate.
5631         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
5632         here, and change name of included file.
5633         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
5634         here, and change name of included file.
5635         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
5636         path to dir-common.h.
5637         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
5638         path to ops-common.h. Disable -Wunused-parameter warnings.
5639         (internal_file_clock): Define unconditionally.
5640         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
5641         define.
5642         (do_copy_file, do_space): Move definitions to ops.common.h.
5643         (copy, file_size, hard_link_count, last_write_time, space): Only
5644         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
5645         report an error.
5646         (last_write_time, read_symlink): Remove unused attributes from
5647         parameters.
5648         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
5649         * src/filesystem/Makefile.in: Regenerate.
5650         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
5651         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
5652         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
5653         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
5654         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
5655         dummy types and functions instead of using #error.
5656         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
5657         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
5658         in terms of stat.
5659         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
5660         (do_copy_file, do_space): Move definitions here from std-ops.cc.
5661         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
5662         to account for new namespace.
5663         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
5664         -lstdc++fs from dg-options.
5665         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
5666         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
5667         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
5668         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
5669         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
5670         Likewise.
5671         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
5672         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5673         Likewise.
5674         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
5675         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
5676         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
5677         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
5678         * testsuite/27_io/filesystem/operations/create_directories.cc:
5679         Likewise.
5680         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
5681         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
5682         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
5683         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
5684         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
5685         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
5686         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5687         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
5688         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
5689         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
5690         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
5691         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
5692         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
5693         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
5694         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
5695         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
5696         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
5697         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
5698         Likewise.
5699         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
5700
5701
5702         PR libstdc++/86756
5703         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
5704         typeinfo and vtables less greedy.
5705         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
5706         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
5707         * src/c++17/Makefile.in: Regenerate.
5708         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
5709         here, and change name of included file.
5710         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
5711         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
5712         from sources.
5713         * src/filesystem/Makefile.in: Regenerate.
5714         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
5715         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
5716         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
5717         from dg-options and remove dg-require-filesystem-ts.
5718         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
5719         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
5720         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
5721         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
5722         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
5723         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
5724         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
5725         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
5726         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
5727         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
5728         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
5729         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
5730         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
5731         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
5732         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
5733         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
5734         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
5735         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
5736         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
5737         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
5738         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
5739         Likewise.
5740         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
5741         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
5742         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
5743         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
5744         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
5745         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
5746         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
5747         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
5748         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
5749         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
5750         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
5751         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
5752         Likewise.
5753         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
5754         Likewise.
5755         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5756         Likewise.
5757         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
5758         Likewise.
5759         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
5760         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
5761         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
5762         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
5763         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
5764         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
5765         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
5766         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
5767         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
5768         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
5769         Likewise.
5770         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
5771         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
5772         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
5773         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
5774         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
5775
5776         PR libstdc++/87431
5777         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
5778         Check is_trivially_copyable instead of is_scalar.
5779         (variant::emplace<N, Args>(Args&&...)): If construction of the new
5780         contained value can throw and its type is trivially copyable then
5781         construct into a temporary variant and move from it, to provide the
5782         strong exception safety guarantee.
5783         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
5784         Likewise.
5785         * testsuite/20_util/variant/87431.cc: New test.
5786         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
5787         conversion causes valueless state.
5788
5789         PR libstdc++/88607
5790         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
5791         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
5792         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
5793         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
5794         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
5795
5796 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
5797
5798         * include/bits/fs_fwd.h (__file_clock): Define new clock.
5799         (file_time_type): Redefine in terms of __file_clock.
5800         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
5801         overflow.
5802         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
5803         internal linkage.
5804         (internal_file_lock): New helper type for accessing __file_clock.
5805         (do_copy_file): Use internal_file_lock to convert system time to
5806         file_time_type.
5807         (last_write_time(const path&, error_code&)): Likewise.
5808         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
5809
5810 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
5811
5812         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
5813         for const member functions of std::basic_string.
5814         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
5815         in C++17.
5816         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
5817         Make non-standard constructor private.
5818         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
5819         Likewise.
5820         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
5821         explicit instantiations for C++17 as well as earlier dialects.
5822         * src/c++17/Makefile.am: Add new source files.
5823         * src/c++17/Makefile.in: Regenerate.
5824         * src/c++17/cow-string-inst.cc: New file defining explicit
5825         instantiations for basic_string member functions added in C++17.
5826         * src/c++17/string-inst.cc: Likewise.
5827
5828         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
5829         copy/move constructors for old std::basic_string.
5830         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
5831         (basic_string::reference, basic_string::const_reference): Define
5832         as plain references for C++11 and later.
5833         (basic_string::basic_string()): Put constructor body outside
5834         preprocessor conditional groups.
5835         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
5836         instead of copying it.
5837         (basic_string::basic_string(const basic_string&, const _Alloc&)):
5838         Define.
5839         (basic_string::basic_string(basic_string&&, const _Alloc&)):
5840         Define.
5841         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
5842         cases for old basic_string.
5843         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
5844         allocator-extended constructors unconditionally. Add extra members to
5845         allocator type when using old string ABI.
5846         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
5847         for old string ABI.
5848         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
5849
5850         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
5851         -fno-inline added to test flags.
5852
5853         * testsuite/21_strings/basic_string/requirements/
5854         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
5855
5856         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
5857         assertion failures with old std::string ABI.
5858
5859         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
5860         with ...
5861         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
5862         functions that will only erase elements at the end.
5863         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
5864         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
5865         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
5866         of erase(p, end()).
5867         (path::_List::pop_back()): Define.
5868         (path::_List::_M_erase_from(const_iterator)): Define.
5869         (path::operator/=(const path&)): Use pop_back to remove last component
5870         and _M_erase_from to remove multiple components.
5871         (path::_M_append(basic_string_view<value_type>)): Likewise.
5872         (path::operator+=(const path&)): Likewise.
5873         (path::_M_concat(basic_string_view<value_type>)): Likewise.
5874         (path::remove_filename()): Likewise.
5875         (path::lexically_normal()): Use _List::_Impl iterators instead of
5876         path::iterator. Use pop_back to remove components from the end. Clear
5877         trailing filename, instead of using erase(const_iterator) to remove
5878         a non-final component.
5879         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
5880         additional cases.
5881         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
5882
5883         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
5884         incorrect treatment of empty filename after trailing slash.
5885         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
5886
5887         * testsuite/21_strings/basic_string/modifiers/assign/char/
5888         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
5889         to test flags.
5890         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
5891         move_assign_optim.cc: Likewise.
5892
5893 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5894             Jakub Jelinek  <jakub@redhat.com>
5895
5896         PR libstdc++/88607
5897         * include/experimental/memory: Replace UTF-8 quote characters.
5898         * include/std/future: Replace UTF-8 "em dash" characters.
5899
5900 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
5901
5902         PR libstdc++/88607
5903         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
5904         * include/debug/forward_list: Likewise.
5905         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
5906         character.
5907         * include/experimental/chrono: Likewise.
5908         * include/experimental/functional: Likewise.
5909         * include/experimental/ratio: Likewise.
5910         * include/experimental/system_error: Likewise.
5911         * include/experimental/tuple: Likewise.
5912         * include/experimental/type_traits: Likewise.
5913         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
5914         * include/parallel/multiseq_selection.h: Likewise.
5915
5916         PR libstdc++/88681
5917         * config/abi/pre/gnu.ver: Add missing exports.
5918         * testsuite/22_locale/collate_byname/88681.cc: New test.
5919         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
5920         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
5921
5922 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
5923
5924         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
5925         initializer_list<value_type> and from input iterator ranges.
5926         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
5927
5928         * testsuite/experimental/string_view/element_access/char/empty.cc:
5929         Fix year range in copyright header.
5930
5931 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
5932
5933         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
5934         Fix year range in copyright header.
5935
5936 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
5937
5938         Update copyright years.
5939 \f
5940 Copyright (C) 2019 Free Software Foundation, Inc.
5941
5942 Copying and distribution of this file, with or without modification,
5943 are permitted in any medium without royalty provided the copyright
5944 notice and this notice are preserved.