libstdc++-v3/ChangeLog

   1 2019-11-07  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/bits/stl_algo.h (for_each_n): Handle negative count.
   4         * testsuite/25_algorithms/for_each/for_each_n_debug.cc: New test.
   5
   6 2019-11-07  Jason Merrill  <jason@redhat.com>
   7
   8         * libsupc++/compare: Remove strong_equality and weak_equality.
   9
  10 2019-11-06  Jonathan Wakely  <jwakely@redhat.com>
  11
  12         * include/Makefile.in: Regenerate.
  13         * libsupc++/Makefile.in: Regenerate.
  14         * libsupc++/compare (__3way_builtin_ptr_cmp): Define helper.
  15         (compare_three_way): Add missing implementation.
  16
  17         * include/bits/iterator_concepts.h (unreachable_sentinel_t): Remove
  18         redundant equality operators.
  19         * testsuite/util/testsuite_iterators.h (test_range::sentinel):
  20         Likewise.
  21
  22 2019-11-05  Jonathan Wakely  <jwakely@redhat.com>
  23
  24         * libsupc++/compare: New header.
  25         * libsupc++/Makefile.am (std_HEADERS): Add compare.
  26         * include/std/version: Define __cpp_lib_three_way_comparison.
  27         * include/std/functional: #include <compare>.
  28
  29         * include/std/version [!_GLIBCXX_HOSTED]: Do not define feature test
  30         macros for features that are only present in hosted builds.
  31
  32         * include/bits/iterator_concepts.h (__iter_without_nested_types):
  33         Remove incorrect comment.
  34
  35 2019-10-31  Jonathan Wakely  <jwakely@redhat.com>
  36
  37         * doc/html/*: Regenerate.
  38
  39         * include/bits/refwrap.h (reference_wrapper, ref, cref): Add constexpr
  40         specifiers for C++20.
  41         * include/std/functional (_Mem_fn, mem_fn, _Bind, _Bind_result, bind)
  42         (bind_front, _Not_fn, not_fn): Likewise.
  43         * testsuite/20_util/bind/constexpr.cc: New test.
  44         * testsuite/20_util/function_objects/bind_front/constexpr.cc: New test.
  45         * testsuite/20_util/function_objects/mem_fn/constexpr.cc: New test.
  46         * testsuite/20_util/function_objects/not_fn/constexpr.cc: New test.
  47         * testsuite/20_util/reference_wrapper/constexpr.cc: New test.
  48
  49         * doc/doxygen/user.cfg.in: Add new header.
  50         * include/Makefile.am: Add new header.
  51         * include/Makefile.in: Regenerate.
  52         * include/precompiled/stdc++.h: Include new header.
  53         * include/std/ranges: New header.
  54         (ranges::sentinel_t, ranges::range_value_t, ranges::range_reference_t)
  55         (ranges::range_rvalue_reference_t, ranges::sized_range)
  56         (ranges::output_range, ranges::input_ranges, ranges::forward_range)
  57         (ranges::bidirectional_range, ranges::random_access_range)
  58         (ranges::contiguous_range, ranges::common::range): Define.
  59         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Check
  60         that disabled_sized_sentinel can be specialized.
  61         * testsuite/std/ranges/access/begin.cc: Include <ranges> instead of
  62         <iterator>.
  63         * testsuite/std/ranges/access/cbegin.cc: Likewise.
  64         * testsuite/std/ranges/access/cdata.cc: Likewise.
  65         * testsuite/std/ranges/access/cend.cc: Likewise.
  66         * testsuite/std/ranges/access/crbegin.cc: Likewise.
  67         * testsuite/std/ranges/access/crend.cc: Likewise.
  68         * testsuite/std/ranges/access/data.cc: Likewise.
  69         * testsuite/std/ranges/access/empty.cc: Likewise.
  70         * testsuite/std/ranges/access/end.cc: Likewise.
  71         * testsuite/std/ranges/access/end_neg.cc: Likewise.
  72         * testsuite/std/ranges/access/rbegin.cc: Likewise.
  73         * testsuite/std/ranges/access/rend.cc: Likewise.
  74         * testsuite/std/ranges/access/size.cc: Likewise.
  75         * testsuite/std/ranges/access/size_neg.cc: Likewise.
  76         * testsuite/std/ranges/headers/ranges/synopsis.cc: New test.
  77         * testsuite/std/ranges/range.cc: New test.
  78         * testsuite/std/ranges/refinements.cc: New test.
  79         * testsuite/std/ranges/sized.cc: New test.
  80         * testsuite/util/testsuite_iterators.h: Add aliases for range types.
  81         (output_iterator_wrapper::WritableObject::operator=): Add const
  82         qualifier so that output_iterator_wrapper satisfies writable.
  83
  84         * testsuite/20_util/add_pointer/value.cc: Check void types.
  85
  86         * include/bits/range_access.h (__sizable): Rename to __sentinel_size.
  87         Remove workaround for PR c++/92268 and remove redundant requirements
  88         that are already checked by sized_sentinel_for.
  89         * testsuite/std/ranges/access/cend.cc: Fix failures.
  90         * testsuite/std/ranges/access/end.cc: Likewise.
  91
  92         * include/bits/range_access.h (ranges::begin): Combine array and
  93         non-array overloads into one function template. Only use ADL for
  94         classes and enums.
  95         (ranges::end, ranges::size): Likewise. Make unbounded arrays
  96         ill-formed.
  97         (ranges::rbegin, ranges::rend): Only use ADL for classes and enums.
  98         Reformat _S_noexcept() functions to mirror operator() structure.
  99         * testsuite/std/ranges/access/begin.cc: Check incomplete array.
 100         * testsuite/std/ranges/access/end_neg.cc: New test.
 101         * testsuite/std/ranges/access/size.cc: Check array of incomplete type.
 102         * testsuite/std/ranges/access/size_neg.cc: New test.
 103
 104         * testsuite/24_iterators/range_access*.cc: Move to ...
 105         * testsuite/24_iterators/range_access/range_access*.cc: ... here.
 106         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc: New
 107         test.
 108
 109 2019-10-30  Jonathan Wakely  <jwakely@redhat.com>
 110
 111         * include/std/concepts (std::ranges::swap): Use a single overload for
 112         the non-array cases, and switch using if-constexpr.
 113
 114         * include/bits/stl_iterator.h (__normal_iterator::iterator_concept):
 115         Guard with __cpp_lib_concepts macro.
 116
 117         * include/std/bit (__cpp_lib_bitops): Define.
 118         * include/std/version (__cpp_lib_constexpr): Remove.
 119         (__cpp_lib_bitops, __cpp_lib_constexpr_dynamic_alloc): Define.
 120         * testsuite/26_numerics/bit/header.cc: New test.
 121         * testsuite/26_numerics/bit/header-2.cc: New test.
 122         * testsuite/20_util/allocator_traits/header.cc: New test.
 123         * testsuite/20_util/allocator_traits/header-2.cc: New test.
 124
 125         * include/bits/stl_iterator.h (namespace __gnu_cxx): Remove
 126         using-declarations for std::iterator and std::iterator_traits.
 127         (__gnu_cxx::__normal_iterator): Qualify iterator_traits.
 128         * include/ext/algorithm (namespace __gnu_cxx): Remove
 129         using-declarations for std names and qualify those names when used.
 130         Also refer to std::min in parentheses to protect against function-like
 131         macros.
 132         * include/ext/rc_string_base.h: Qualify iterator_traits.
 133         * include/ext/sso_string_base.h: Qualify iterator_traits.
 134
 135         PR libstdc++/92272
 136         * include/bits/stl_bvector.h (_Bit_iterator::pointer)
 137         (_Bit_const_iterator::pointer): Define as void for C++20.
 138         * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add
 139         constraints for C++20.
 140         (__normal_iterator::iterator_concept): Define for C++20.
 141         * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer):
 142         Define as void for C++20.
 143         (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20.
 144         (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor
 145         for C++20.
 146         * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test.
 147         * testsuite/24_iterators/bidirectional/concept.cc: New test.
 148         * testsuite/24_iterators/bidirectional/tag.cc: New test.
 149         * testsuite/24_iterators/contiguous/concept.cc: New test.
 150         * testsuite/24_iterators/contiguous/tag.cc: New test.
 151         * testsuite/24_iterators/forward/concept.cc: New test.
 152         * testsuite/24_iterators/forward/tag.cc: New test.
 153         * testsuite/24_iterators/input/concept.cc: New test.
 154         * testsuite/24_iterators/input/tag.cc: New test.
 155         * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc:
 156         New test.
 157         * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc:
 158         New test.
 159         * testsuite/24_iterators/output/concept.cc: New test.
 160         * testsuite/24_iterators/output/tag.cc: New test.
 161         * testsuite/24_iterators/random_access/concept.cc: New test.
 162         * testsuite/24_iterators/random_access/tag.cc: New test.
 163         * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New
 164         test.
 165         * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ...
 166         * testsuite/24_iterators/operations/26020.cc: ... here.
 167         * testsuite/24_iterators/random_access_iterator/
 168         string_vector_iterators.cc: Move to ...
 169         * testsuite/24_iterators/random_access/string_vector_iterators.cc: ...
 170         here.
 171
 172         * testsuite/util/testsuite_iterators.h: Fix typo in __cplusplus check.
 173
 174 2019-10-29  Jonathan Wakely  <jwakely@redhat.com>
 175
 176         * include/bits/range_access.h (ranges::disable_sized_range)
 177         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
 178         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
 179         (ranges::size, ranges::empty, ranges::data, ranges::cdata)
 180         (ranges::range, ranges::sized_range, ranges::advance, ranges::distance)
 181         (ranges::next, ranges::prev): Guard with __cpp_lib_concepts.
 182         * include/bits/stl_iterator.h (disable_sized_sentinel): Likewise.
 183
 184         * include/bits/alloc_traits.h (__cpp_lib_constexpr_dynamic_alloc):
 185         Define.
 186         (allocator_traits::_S_construct, allocator_traits::_S_destroy)
 187         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use
 188         _GLIBCXX14_CONSTEXPR instead of constexpr.
 189         * include/bits/stl_construct.h (_Destroy): Likewise.
 190
 191         * include/Makefile.am: Add new header.
 192         * include/Makefile.in: Regenerate.
 193         * include/bits/iterator_concepts.h: New header.
 194         (contiguous_iterator_tag, iter_reference_t, ranges::iter_move)
 195         (iter_rvalue_reference_t, incrementable_traits, iter_difference_t)
 196         (readable_traits, iter_value_t, readable, iter_common_reference_t)
 197         (writable, waekly_incrementable, incrementable)
 198         (input_or_output_iterator, sentinel_for, disable_sized_sentinel)
 199         (sized_sentinel_for, input_iterator, output_iterator)
 200         (forward_iterator, bidirectional_iterator, random_access_iterator)
 201         (contiguous_iterator, indirectly_unary_invocable)
 202         (indirectly_regular_unary_invocable, indirect_unary_predicate)
 203         (indirect_relation, indirect_strict_weak_order, indirect_result_t)
 204         (projected, indirectly_movable, indirectly_movable_storable)
 205         (indirectly_copyable, indirectly_copyable_storable, ranges::iter_swap)
 206         (indirectly_swappable, indirectly_comparable, permutable, mergeable)
 207         (sortable, unreachable_sentinel_t, unreachable_sentinel)
 208         (default_sentinel_t, default_sentinel): Define.
 209         (__detail::__cpp17_iterator, __detail::__cpp17_input_iterator)
 210         (__detail::__cpp17_fwd_iterator, __detail::__cpp17_bidi_iterator)
 211         (__detail::__cpp17_randacc_iterator): Define.
 212         (__iterator_traits): Define constrained specializations.
 213         * include/bits/move.h (move): Only use old concept check for C++98.
 214         * include/bits/range_access.h (ranges::disable_sized_range)
 215         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
 216         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
 217         (ranges::size, ranges::empty, ranges::data, ranges::cdata): Define
 218         new customization points for C++20.
 219         (ranges::range, ranges::sized_range): Define new concepts for C++20.
 220         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
 221         Define new functions for C++20.
 222         (__adl_end, __adl_cdata, __adl_cbegin, __adl_cend, __adl_rbegin)
 223         (__adl_rend, __adl_crbegin, __adl_crend, __adl_cdata, __adl_size)
 224         (__adl_empty): Remove.
 225         * include/bits/stl_iterator.h (disable_sized_sentinel): Specialize
 226         for reverse_iterator.
 227         * include/bits/stl_iterator_base_types.h (contiguous_iterator_tag):
 228         Define new struct for C++20.
 229         (iterator_traits<_Tp*>): Constrain partial specialization in C++20.
 230         * include/std/concepts (__is_class_or_enum): Move to __detail
 231         namespace.
 232         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error line number.
 233         * testsuite/20_util/forward/f_neg.cc: Likewise.
 234         * testsuite/24_iterators/associated_types/incrementable.traits.cc: New
 235         test.
 236         * testsuite/24_iterators/associated_types/readable.traits.cc: New test.
 237         * testsuite/24_iterators/contiguous/concept.cc: New test.
 238         * testsuite/24_iterators/contiguous/tag.cc: New test.
 239         * testsuite/24_iterators/customization_points/iter_move.cc: New test.
 240         * testsuite/24_iterators/customization_points/iter_swap.cc: New test.
 241         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: New test.
 242         * testsuite/24_iterators/range_operations/advance.cc: New test.
 243         * testsuite/24_iterators/range_operations/distance.cc: New test.
 244         * testsuite/24_iterators/range_operations/next.cc: New test.
 245         * testsuite/24_iterators/range_operations/prev.cc: New test.
 246         * testsuite/26_numerics/adjacent_difference/requirements/
 247         explicit_instantiation/2.cc: Rename types that conflict with C++20
 248         concepts.
 249         * testsuite/26_numerics/adjacent_difference/requirements/
 250         explicit_instantiation/pod.cc: Likewise.
 251         * testsuite/26_numerics/partial_sum/requirements/
 252         explicit_instantiation/2.cc: Likewise.
 253         * testsuite/26_numerics/partial_sum/requirements/
 254         explicit_instantiation/pod.cc: Likewise.
 255         * testsuite/experimental/iterator/requirements.cc: Likewise.
 256         * testsuite/std/ranges/access/begin.cc: New test.
 257         * testsuite/std/ranges/access/cbegin.cc: New test.
 258         * testsuite/std/ranges/access/cdata.cc: New test.
 259         * testsuite/std/ranges/access/cend.cc: New test.
 260         * testsuite/std/ranges/access/crbegin.cc: New test.
 261         * testsuite/std/ranges/access/crend.cc: New test.
 262         * testsuite/std/ranges/access/data.cc: New test.
 263         * testsuite/std/ranges/access/empty.cc: New test.
 264         * testsuite/std/ranges/access/end.cc: New test.
 265         * testsuite/std/ranges/access/rbegin.cc: New test.
 266         * testsuite/std/ranges/access/rend.cc: New test.
 267         * testsuite/std/ranges/access/size.cc: New test.
 268         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper)
 269         (test_range, test_sized_range): New test utilities.
 270
 271         * testsuite/util/testsuite_iterators.h (BoundsContainer::size()): Add
 272         new member function.
 273         (WritableObject::operator=): Constrain with enable_if when available.
 274         (remove_cv): Use std::remove_if when available.
 275         (test_container::it(int)): Use size().
 276         (test_container::size()): Use BoundsContainer::size().
 277
 278         PR libstdc++/92267
 279         * include/bits/stl_deque.h (_Deque_iterator(const _Deque_iterator&)):
 280         Do not define as defaulted.
 281         * testsuite/23_containers/deque/types/92267.cc: New test.
 282
 283 2019-10-26  Gerald Pfeifer  <gerald@pfeifer.com>
 284
 285         * doc/xml/manual/codecvt.xml: Switch pubs.opengroup.org to https.
 286         * doc/xml/manual/locale.xml (LC_ALL): Ditto.
 287         * doc/xml/manual/messages.xml: Ditto.
 288
 289 2019-10-26  John David Anglin  <danglin@gcc.gnu.org>
 290
 291         * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
 292
 293 2019-10-25  Jonathan Wakely  <jwakely@redhat.com>
 294
 295         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper)
 296         (input_iterator_wrapper, forward_iterator_wrapper)
 297         bidirectional_iterator_wrapper, random_access_iterator_wrapper): Remove
 298         user-provided copy constructors and copy assignment operators so they
 299         are defined implicitly.
 300         (input_iterator_wrapper): Initialize members in default constructor.
 301         (forward_iterator_wrapper): Remove assignments to members of base.
 302
 303         * include/bits/allocator.h: Check __cpp_constexpr_dynamic_alloc
 304         before making the std::allocator destructor constexpr.
 305         * testsuite/20_util/allocator/requirements/constexpr.cc: New test.
 306
 307         * include/bits/range_cmp.h: Check __cpp_lib_concepts before defining
 308         concepts. Fix comment.
 309         * include/bits/allocator.h
 310
 311 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 312
 313         * doc/xml/manual/policy_data_structures_biblio.xml: Switch
 314         pubs.opengroup.org to https.
 315
 316 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
 317
 318         * doc/xml/gnu/gpl-3.0.xml: Switch www.gnu.org to https.
 319
 320 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
 321
 322         * doc/xml/manual/status_cxx2020.xml: Add rows and update status.
 323
 324 2019-10-24  Jonathan Wakely  <jwakely@redhat.com>
 325
 326         * include/bits/allocator.h (allocator<void>): Restore the explicit
 327         specialization for C++20, but make its API consistent with the primary
 328         template.
 329         (allocator::~allocator()): Restore the destructor for C++20, but make
 330         it constexpr.
 331         * testsuite/20_util/allocator/rebind_c++20.cc: Check allocator<void>.
 332         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: Likewise.
 333         * testsuite/20_util/allocator/void.cc: Check that constructors and
 334         destructors are trivial. Check for converting constructor in C++20.
 335         * testsuite/ext/malloc_allocator/variadic_construct.cc: Simplify
 336         dejagnu target selector.
 337         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 338
 339         * include/experimental/executor (__use_future_ct, use_future_t):
 340         Define partial specializations for std::allocator.
 341         (__use_future_ch): Overload constructor for completion tokens using
 342         std::allocator.
 343
 344         PR libstdc++/88338 Implement P0898R3, C++20 concepts library
 345         * doc/xml/manual/status_cxx2020.xml: Update status.
 346         * doc/html/*: Regenerate.
 347         * testsuite/std/concepts/1.cc: New test.
 348         * testsuite/std/concepts/2.cc: New test.
 349
 350         * include/bits/random.h (uniform_random_bit_generator): Define for
 351         C++20.
 352         * testsuite/26_numerics/random/concept.cc: New test.
 353         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
 354
 355 2019-10-23  Jonathan Wakely  <jwakely@redhat.com>
 356
 357         * include/std/functional (invoke): Add constexpr for C++20.
 358         * include/std/version (__cpp_lib_constexpr_invoke): Define.
 359         * testsuite/20_util/function_objects/invoke/constexpr.cc: New test.
 360
 361         PR c++/91369 Implement P0784R7 changes to allocation and construction
 362         * include/bits/alloc_traits.h: Include <bits/stl_construct.h>.
 363         (allocator_traits::_S_allocate, allocator_traits::_S_construct)
 364         (allocator_traits::_S_destroy, allocator_traits::_S_max_size)
 365         (allocator_traits::_S_select, allocator_traits::allocate)
 366         (allocator_traits::deallocate, allocator_traits::construct)
 367         (allocator_traits::destroy, allocator_traits::max_size)
 368         (allocator_traits::select_on_container_copy_construction)
 369         (allocator_traits<allocator<T>>): Add constexpr specifier for C++20.
 370         (allocator_traits<allocator<T>>::construct): Use construct_at.
 371         (allocator_traits<allocator<T>>::destroy): Use destroy_at.
 372         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Add constexpr
 373         specifier.
 374         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 375         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move here
 376         from <bits/stl_construct.h>.
 377         * include/bits/allocator.h (allocator::~allocator): Remove for C++20.
 378         (allocator::allocate, allocate::deallocate): Define for C++20 and up.
 379         (operator==, operator!=): Add constexpr specifier for C++20.
 380         * include/bits/stl_construct.h: Don't include <ext/alloc_traits.h>.
 381         (destroy_at): For C++20 add constexpr specifier and support for
 382         destroying arrays.
 383         (construct_at): Define new function for C++20.
 384         (_Construct): Return result of placement new-expression. For C++11 and
 385         up add constexpr. For C++20 dispatch to std::construct_at during
 386         constant evaluation.
 387         (_Destroy(pointer)): Add constexpr specifier. For C++20 dispatch to
 388         std::destroy_at during constant evaluation.
 389         (_Destroy_aux::__destroy, _Destroy_n_aux::__destroy_n): Add constexpr
 390         specifier for C++20.
 391         (_Destroy(ForwardIterator, ForwardIterator))
 392         (_Destroy(ForwardIterator, Size)): Likewise. Do not elide trivial
 393         destructors during constant evaluation.
 394         (destroy, destroy_n): Add constexpr specifier for C++20.
 395         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
 396         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move to
 397         <bits/alloc_traits.h>, to remove dependency on allocators.
 398         * include/bits/stl_uninitialized.h: Include <ext/alloc_traits.h>.
 399         Include <bits/stl_pair.h> instead of <utility>.
 400         * include/ext/alloc_traits.h: Always include <bits/alloc_traits.h>.
 401         (__alloc_traits::construct, __alloc_traits::destroy)
 402         (__alloc_traits::_S_select_on_copy, __alloc_traits::_S_on_swap): Add
 403         constexpr specifier.
 404         * include/ext/malloc_allocator.h  (operator==, operator!=): Add
 405         constexpr specifier for C++20.
 406         * include/ext/new_allocator.h (operator==, operator!=): Likewise.
 407         * testsuite/20_util/headers/memory/synopsis.cc: Add constexpr.
 408         * testsuite/20_util/scoped_allocator/69293_neg.cc: Ignore additional
 409         errors due to constexpr function called after failed static_assert.
 410         * testsuite/20_util/specialized_algorithms/construct_at/1.cc: New test.
 411         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 412         Ignore additional errors due to constexpr function called after failed
 413         static_assert.
 414         * testsuite/23_containers/vector/cons/destructible_neg.cc: Likewise.
 415
 416         * testsuite/20_util/bind/91371.cc: Fix test to compile as C++11.
 417
 418         * include/debug/helper_functions.h (__valid_range): Change
 419         _GLIBCXX_CONSTEXPR to _GLIBCXX14_CONSTEXPR.
 420
 421         * include/ext/throw_allocator.h (throw_allocator_base): Qualify
 422         size_t and ptrdiff_t.
 423
 424         * include/ext/pb_ds/detail/bin_search_tree_/bin_search_tree_.hpp:
 425         Use detail::rebind_traits.
 426         * include/ext/pb_ds/detail/bin_search_tree_/node_iterators.hpp:
 427         Likewise.
 428         * include/ext/pb_ds/detail/bin_search_tree_/traits.hpp: Likewise.
 429         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp: Likewise.
 430         * include/ext/pb_ds/detail/binary_heap_/entry_cmp.hpp: Likewise.
 431         * include/ext/pb_ds/detail/binary_heap_/entry_pred.hpp: Likewise.
 432         * include/ext/pb_ds/detail/binary_heap_/point_const_iterator.hpp:
 433         Likewise.
 434         * include/ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp:
 435         Likewise.
 436         * include/ext/pb_ds/detail/branch_policy/branch_policy.hpp: Likewise.
 437         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp: Likewise.
 438         * include/ext/pb_ds/detail/cond_dealtor.hpp: Likewise.
 439         * include/ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp (has_eq_fn): Likewise.
 440         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp: Likewise.
 441         * include/ext/pb_ds/detail/hash_fn/ranged_hash_fn.hpp: Likewise.
 442         * include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp: Likewise.
 443         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 444         left_child_next_sibling_heap_.hpp: Likewise.
 445         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/node.hpp:
 446         Likewise.
 447         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 448         point_const_iterator.hpp: Likewise.
 449         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp: Likewise.
 450         * include/ext/pb_ds/detail/ov_tree_map_/
 451         constructors_destructor_fn_imps.hpp: Likewise.
 452         * include/ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp: Likewise.
 453         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hpp: Likewise.
 454         * include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp: Likewise.
 455         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp: Likewise.
 456         * include/ext/pb_ds/detail/pat_trie_/pat_trie_base.hpp: Likewise.
 457         * include/ext/pb_ds/detail/rb_tree_map_/node.hpp: Likewise.
 458         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp: Likewise.
 459         * include/ext/pb_ds/detail/splay_tree_/node.hpp: Likewise.
 460         * include/ext/pb_ds/detail/thin_heap_/thin_heap_.hpp: Likewise.
 461         * include/ext/pb_ds/detail/trie_policy/sample_trie_access_traits.hpp:
 462         Likewise.
 463         * include/ext/pb_ds/detail/type_utils.hpp: Fix typo in comment.
 464         * include/ext/pb_ds/detail/types_traits.hpp (stored_value): Add
 465         bool parameter to control whether the hash value is stored.
 466         (select_base_type): New class template and partial specialization.
 467         (maybe_null_type): Likewise.
 468         (rebind_traits): New class template.
 469         (type_base): Remove four nearly identical specializations.
 470         (type_dispatch): Remove.
 471         (type_traits): Use select_base_type and maybe_null_type instead of
 472         type_base to control differences between specializations.
 473         * include/ext/pb_ds/list_update_policy.hpp: Use detail::rebind_traits.
 474         * include/ext/pb_ds/priority_queue.hpp: Likewise.
 475         * include/ext/pb_ds/tree_policy.hpp: Likewise.
 476         * include/ext/pb_ds/trie_policy.hpp: Likewise.
 477
 478         * include/backward/hash_set (hash_set): Use __alloc_traits.
 479         * include/backward/hashtable.h (_Hashtable): Likewise.
 480         * include/ext/alloc_traits.h (__alloc_traits::allocate): Add overload
 481         taking a hint.
 482         * include/ext/extptr_allocator.h (_ExtPtr_allocator::allocate): Ignore
 483         hint.
 484         * include/ext/slist (_Slist_base): Use __alloc_traits.
 485         * include/tr1/hashtable.h (_Hashtable): Likewise.
 486         * include/tr1/regex (match_results): Use vector::const_reference
 487         instead of assuming the allocator defines it.
 488         * testsuite/backward/hash_map/23528.cc: Use allocator_traits in C++11.
 489         * testsuite/tr1/6_containers/unordered_map/capacity/29134-map.cc: Use
 490         __gnu_test::max_size.
 491         * testsuite/tr1/6_containers/unordered_multimap/capacity/
 492         29134-multimap.cc: Likewise.
 493         * testsuite/tr1/6_containers/unordered_multiset/capacity/
 494         29134-multiset.cc: Likewise.
 495         * testsuite/tr1/6_containers/unordered_set/capacity/29134-set.cc:
 496         Likewise.
 497
 498 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
 499
 500         * testsuite/util/testsuite_abi.h: Restore use of tr1/unordered_map
 501         when compiled as C++98.
 502
 503         * include/bits/memoryfwd.h (uses_allocator): Do not declare for C++98.
 504         * testsuite/17_intro/names.cc: Check uses_allocator in C++98.
 505
 506         * include/bits/alloc_traits.h
 507         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
 508         (allocator_traits<allocator<T>>::construct): Perform placement new
 509         directly for C++20, instead of calling allocator<T>::construct.
 510         (allocator_traits<allocator<T>>::destroy): Call destructor directly
 511         for C++20, instead of calling allocator<T>::destroy.
 512         (allocator_traits<allocator<T>>::max_size): Return value directly
 513         for C++20, instead of calling std::allocator<T>::max_size().
 514         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
 515         define for C++17 and up.
 516         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
 517         for C++17 and up, instead of tag dispatching.
 518         * include/bits/allocator.h (allocator<void>): Remove for C++20.
 519         (allocator::pointer, allocator::const_pointer, allocator::reference)
 520         (allocator::const_reference, allocator::rebind): Remove for C++20.
 521         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
 522         rebind allocator.
 523         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
 524         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
 525         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
 526         (malloc_allocator::pointer, malloc_allocator::const_pointer)
 527         (malloc_allocator::reference, malloc_allocator::const_reference)
 528         (malloc_allocator::rebind, malloc_allocator::max_size)
 529         (malloc_allocator::construct, malloc_allocator::destroy): Do not
 530         define for C++20.
 531         (malloc_allocator::_M_max_size): Define new function.
 532         * include/ext/new_allocator.h (new_allocator::~new_allocator)
 533         (new_allocator::pointer, new_allocator::const_pointer)
 534         (new_allocator::reference, new_allocator::const_reference)
 535         (new_allocator::rebind, new_allocator::max_size)
 536         (new_allocator::construct, new_allocator::destroy): Do not
 537         define for C++20.
 538         (new_allocator::_M_max_size): Define new function.
 539         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
 540         __alloc_traits to rebind allocator.
 541         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
 542         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
 543         to construct character.
 544         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
 545         allocator.
 546         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
 547         Use __alloc_traits.
 548         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
 549         members of std::allocator, use __alloc_traits members instead.
 550         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
 551         * include/ext/vstring_util.h (__vstring_utility): Likewise.
 552         * include/std/memory: Include <bits/alloc_traits.h>.
 553         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
 554         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
 555         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
 556         for pointer, const_pointer, reference, const_reference or rebind in
 557         C++20.
 558         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
 559         * testsuite/23_containers/deque/capacity/29134.cc: Use
 560         __gnu_test::max_size.
 561         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
 562         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
 563         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
 564         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
 565         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
 566         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
 567         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
 568         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
 569         test for C++20.
 570         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
 571         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
 572         * testsuite/util/replacement_memory_operators.h: Do not assume
 573         Alloc::pointer exists.
 574         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
 575         helper to call max_size for any allocator.
 576
 577 2019-10-22  Andreas Schwab  <schwab@suse.de>
 578
 579         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 580
 581 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
 582
 583         PR libstdc++/92143
 584         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
 585         to at least sizeof(void*).
 586
 587         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
 588         logic from std::less::operator() to remove the dependency on it.
 589
 590 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
 593
 594         * include/Makefile.am: Add new header.
 595         * include/Makefile.in: Regenerate.
 596         * include/bits/range_cmp.h: New header for C++20 function objects.
 597         * include/std/functional: Include new header.
 598         * testsuite/20_util/function_objects/identity/1.cc: New test.
 599         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
 600         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
 601         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
 602         test.
 603         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
 604         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
 605         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
 606         test.
 607
 608         PR libstdc++/92124
 609         * include/bits/forward_list.h
 610         (_M_move_assign(forward_list&&, false_type)): Do not use
 611         __make_move_if_noexcept, instead move unconditionally.
 612         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
 613         Likewise.
 614         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
 615         Likewise.
 616         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
 617         Likewise.
 618         * testsuite/23_containers/vector/92124.cc: New test.
 619
 620 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
 621
 622         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
 623         one of __is_same_as or __is_same when available.
 624         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
 625         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
 626         Use new macro instead of __is_same_as.
 627         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
 628         specialization.
 629         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
 630         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
 631
 632 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
 633
 634         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
 635         entry with <unknown constness>. Replace state_names <unknown> entry with
 636         <unknown state>.
 637
 638 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
 639
 640         * include/Makefile.am: Add new header.
 641         * include/Makefile.in: Regenerate.
 642         * include/precompiled/stdc++.h: Include <concepts>.
 643         * include/std/concepts: New header for C++20.
 644         * include/std/version (__cpp_lib_concepts): Define.
 645         * scripts/create_testsuite_files: Look for test files in new std
 646         directory.
 647         * testsuite/libstdc++-dg/conformance.exp: Likewise.
 648         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
 649         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
 650         test.
 651         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
 652         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
 653         test.
 654         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 655         floating_point.cc: New test.
 656         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
 657         New test.
 658         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 659         signed_integral.cc: New test.
 660         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
 661         unsigned_integral.cc: New test.
 662         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
 663         test.
 664         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
 665         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
 666         test.
 667         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
 668         New test.
 669         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
 670         New test.
 671         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
 672         New test.
 673         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 674         1.cc: New test.
 675         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
 676         New test.
 677         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
 678         New test.
 679         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
 680         New test.
 681         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
 682         New test.
 683         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
 684         New test.
 685         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
 686         New test.
 687         * testsuite/std/concepts/concepts.lang/concept.swappable/
 688         swappable_with.cc: New test.
 689         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
 690         * testsuite/std/concepts/concepts.object/movable.cc: New test.
 691         * testsuite/std/concepts/concepts.object/regular.cc: New test.
 692         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
 693
 694         * include/std/type_traits (is_same): Replace partial specialization
 695         by using __is_same_as built-in in primary template.
 696         (is_same_v): Use __is_same_as built-in instead of instantiating the
 697         is_same trait.
 698
 699         PR libstdc++/92059
 700         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
 701         special member functions as defaulted. Add noexcept to most members.
 702         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
 703         Mask off unwanted bits in the __val parameter. Avoid undefined left
 704         shifts.
 705         (__dynamic_bitset_base::_M_assign): Remove.
 706         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
 707         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
 708         block_type has lower rank than int.
 709         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
 710         in return types and parameter types.
 711         (dynamic_bitset::_M_Nb): Add default member initializer.
 712         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
 713         defaulted.
 714         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
 715         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
 716         defaulted.
 717         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
 718         Define without using swap, to propagate allocator correctly.
 719         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
 720         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
 721         casts to avoid unwanted integer promotions.
 722         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
 723         add default template arguments and default argument to simplify usage.
 724         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
 725         (operator==(const dynamic_bitset&, const dynamic_bitset&))
 726         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
 727         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
 728         Adjust template parameters to match declaration.
 729         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
 730         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
 731         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
 732         * testsuite/tr2/dynamic_bitset/move.cc: New test.
 733         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
 734
 735         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
 736         warnings.
 737
 738 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
 739
 740         PR libstdc++/91057
 741         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
 742         (find_ldbl_sync_facet): Fix parameter type and missing return.
 743
 744 2019-10-09  Marek Polacek  <polacek@redhat.com>
 745
 746         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
 747         PR c++/69531 - DR 1307: Differently bounded array parameters.
 748         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
 749         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
 750         post-P0388R4 behavior.
 751
 752 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
 753
 754         PR libstdc++/91057
 755         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
 756         compare-exchange or double-checked lock to ensure only one thread sets
 757         the _M_index variable.
 758         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
 759         facets that share another facet's ID.
 760         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
 761
 762         PR libstdc++/78552
 763         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
 764         locale object for every call.
 765         (locale::_S_initialize_once()): Construct C locale here.
 766
 767 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
 768
 769         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
 770         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
 771         * doc/Makefile.in: Regenerate.
 772         * doc/xml/manual/documentation_hacking.xml: Document new target.
 773         * doc/html/*: Regenerate.
 774
 775         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
 776         * doc/html/*: Regenerate.
 777
 778 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
 779
 780         * include/bits/stl_algo.h
 781         (__copy_n_a(_IIte, _Size, _OIte)): New.
 782         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
 783         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
 784         latter.
 785         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
 786         std::__copy_n_a friend.
 787         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
 788         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
 789         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
 790         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
 791
 792         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
 793         for C++11.
 794         (_RequireInputIte): Likewise and use __enable_if_t.
 795         * include/std/numeric
 796         (__is_random_access_iter): Use __iterator_category_t.
 797
 798         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
 799         debug checks.
 800         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
 801         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
 802
 803 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
 804
 805         * include/debug/forward_list
 806         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
 807         distance when not empty.
 808         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
 809         Likewise.
 810         * include/debug/helper_functions.h (__dp_sign_max_size): New
 811         _Distance_precision enum entry.
 812         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
 813         __false_type)): Adapt.
 814         * include/debug/safe_iterator.tcc
 815         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
 816         distance computation.
 817
 818 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
 819
 820         PR libstdc++/81091
 821         PR libstdc++/91947
 822         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
 823         * config.h.in: Regenerate:
 824         * configure: Regenerate:
 825         * include/Makefile.am (${host_builddir}/largefile-config.h): New
 826         target to generate config header for filesystem library.
 827         (${host_builddir}/c++config.h): Rename macros for large file support.
 828         * include/Makefile.in: Regenerate.
 829         * src/c++17/fs_dir.cc: Include new config header.
 830         * src/c++17/fs_ops.cc: Likewise.
 831         (filesystem::file_size): Use uintmax_t for size.
 832         * src/filesystem/dir.cc: Include new config header.
 833         * src/filesystem/ops.cc: Likewise.
 834         (experimental::filesystem::file_size): Use uintmax_t for size.
 835
 836         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
 837         std::tr1::unordered_map.
 838         * testsuite/util/testsuite_allocator.h: Likewise.
 839
 840         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
 841
 842         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
 843         __gnu_cxx::__alloc_traits for allocator construct function.
 844         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
 845
 846         * include/precompiled/stdc++.h: Include <span> for C++20.
 847         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
 848
 849 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 850
 851         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
 852
 853 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
 854
 855         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
 856
 857         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
 858         recent standards.
 859         * doc/html/*: Regenerate.
 860
 861 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
 862
 863         * include/experimental/algorithm (experimental::sample): Qualify call
 864         to __sample correctly.
 865         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
 866         for algorithms that don't have parallel implementations.
 867
 868         * include/parallel/algobase.h (equal, lexicographical_compare): Add
 869         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
 870         constant evaluated.
 871         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
 872         Add _GLIBCXX20_CONSTEXPR.
 873
 874         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
 875         parallel mode.
 876         * testsuite/20_util/hash/84998.cc: Likewise.
 877         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
 878         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
 879         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
 880         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
 881         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
 882         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
 883         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
 884         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
 885         Likewise.
 886         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
 887         Likewise.
 888         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
 889         Likewise.
 890         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
 891         Likewise.
 892         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
 893         Likewise.
 894         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
 895         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 896         * testsuite/25_algorithms/copy/86658.cc: Likewise.
 897         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 898         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 899         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 900         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 901
 902         * include/parallel/algo.h: Replace non-reserved names.
 903         * include/parallel/multiway_merge.h: Likewise.
 904         * include/parallel/multiway_mergesort.h: Likewise.
 905         * include/parallel/numericfwd.h: Likewise.
 906         * testsuite/17_intro/names.cc: Add RAI to test macros.
 907
 908 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
 909
 910         * include/debug/array: Add C++20 constexpr to comparison operators.
 911         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
 912         dg-error line numbers.
 913         * testsuite/23_containers/array/tuple_interface/
 914         tuple_element_debug_neg.cc: Likewise.
 915
 916 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
 917
 918         * include/experimental/internet: Include netinet/in.h if we have
 919         _GLIBCXX_HAVE_NETINET_IN_H defined.
 920
 921         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
 922         FreeBSD warning about lower advertised precision of tgammal.
 923         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
 924         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
 925         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
 926         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
 927         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
 928         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
 929         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
 930         * testsuite/tr1/5_numerical_facilities/special_functions/
 931         08_cyl_bessel_i/check_nan.cc: Likewise.
 932         * testsuite/tr1/5_numerical_facilities/special_functions/
 933         09_cyl_bessel_j/check_nan.cc: Likewise.
 934         * testuite/tr1/5_numerical_facilities/special_functions/
 935         10_cyl_bessel_k/check_nan.cc: Likewise.
 936         * testsuite/tr1/5_numerical_facilities/special_functions/
 937         11_cyl_neumann/check_nan.cc: Likewise.
 938         * testsuite/tr1/5_numerical_facilities/special_functions/
 939         21_sph_bessel/check_nan.cc: Likewise.
 940         * testsuite/tr1/5_numerical_facilities/special_functions/
 941         23_sph_neumann/check_nan.cc: Likewise.
 942
 943 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
 944
 945         * include/std/span (span(element_type(&)[N]))
 946         (span(array<value_type, N>&), span(const array<value_type, N>&)):
 947         Deduce array element type to allow safe const conversions (LWG 3255).
 948         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
 949         remove_cv_t on arguments to __is_std_span and __is_std_array.
 950         * testsuite/23_containers/span/lwg3255.cc: New test.
 951
 952         PR libstdc++/77936
 953         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
 954
 955 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
 956
 957         * include/bits/stl_algo.h (merge): Fix documentation.
 958         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
 959         (__check_sorted): Likewise and remove nested irreflexive check.
 960         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
 961         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
 962         (_Irreflexive_checker::_S_is_valid): Likewise.
 963         (__is_irreflexive, __is_irreflexive_pred): Likewise.
 964         * include/debug/helper_functions.h (__get_distance): Add constexpr.
 965         (__valid_range_aux): Add C++20 constexpr.
 966         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
 967         Likewise and add std::is_constant_evaluated check.
 968         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
 969         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
 970         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
 971         use latter.
 972         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
 973         __builtin_is_contant_evaludated check..
 974         (__can_advance, __base): Add constexpr.
 975         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
 976         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
 977         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
 978         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
 979         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
 980         std::less.
 981         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
 982         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
 983         lambda to be irreflexive.
 984
 985 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
 986
 987         * configure: Regenerate.
 988
 989 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
 990
 991         PR libstdc++/91910
 992         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
 993         atomically and lock the mutex before accessing the sequence.
 994         (_Safe_local_iterator_base::_M_detach()): Likewise.
 995         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
 996
 997 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
 998
 999         * include/debug/array (to_array): Define for debug mode.
1000
1001         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
1002         piecewise construction constructor, assignment operators, and swap.
1003         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
1004         Add _GLIBCXX20_CONSTEXPR.
1005         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
1006         * testsuite/20_util/pair/constexpr_assign.cc: New test.
1007         * testsuite/20_util/pair/constexpr_swap.cc: New test.
1008
1009         * include/experimental/internet (operator==, operator<): Fix loop
1010         condition to avoid reading past the end of the array.
1011
1012         * include/std/array: Remove references to profile mode.
1013         * include/std/bitset: Likewise.
1014         * include/std/deque: Likewise.
1015         * include/std/forward_list: Likewise.
1016         * include/std/list: Likewise.
1017         * include/std/map: Likewise.
1018         * include/std/set: Likewise.
1019         * include/std/unordered_map: Likewise.
1020         * include/std/unordered_set: Likewise.
1021         * include/std/vector: Likewise.
1022         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
1023         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
1024
1025 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
1026
1027         * include/bits/regex.h
1028         (basic_regex::assign(const C*, size_t, flag_type)): Add default
1029         argument (LWG 3296).
1030         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
1031         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
1032
1033 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
1034
1035         * include/std/variant (variant::index()): Remove impossible case.
1036
1037         PR libstdc++/91871
1038         * testsuite/util/testsuite_hooks.h
1039         (conversion::iterator_to_const_iterator()): Do not return an invalid
1040         iterator. Test direct-initialization and direct-list-initialization
1041         as well as implicit conversion.
1042
1043 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
1044
1045         PR libstdc++/91788 (partial)
1046         * include/std/variant (variant::index()): Improve codegen for cases
1047         where conversion to size_t already works correctly.
1048
1049 2019-09-23  Andreas Schwab  <schwab@suse.de>
1050
1051         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1052
1053 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
1054
1055         PR libstdc++/91748
1056         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
1057         case.
1058         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
1059         access iterators.
1060
1061 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
1062
1063         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
1064         Fix syntax error.
1065
1066         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
1067         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
1068         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
1069         for C++2a and up.
1070
1071 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
1072
1073         * include/std/type_traits (__do_common_type_impl): Implement
1074         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
1075         (basic_common_reference, common_reference, common_reference_t): Define
1076         for C++20.
1077         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
1078         test.
1079         * testsuite/20_util/common_reference/requirements/
1080         explicit_instantiation.cc: New test.
1081         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
1082         test.
1083
1084         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
1085         non-template overloads for each signed and unsigned integer type and
1086         char. Define deleted overload for bool (LWG 3266).
1087         * testsuite/20_util/to_chars/1_neg.cc: Remove.
1088         * testsuite/20_util/to_chars/3.cc: New test.
1089         * testsuite/20_util/to_chars/lwg3266.cc: New test.
1090
1091 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
1092
1093         * acinclude.m4: Handle uclinux*.
1094         * configure: Regenerate.
1095         * configure.host: Handle uclinux*
1096
1097 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
1098         Mickaël Guêné <mickael.guene@st.com>
1099
1100         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
1101         support.
1102
1103 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
1104
1105         PR libstdc++/91711
1106         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
1107         0ul being a valid null pointer constant.
1108
1109         * include/std/type_traits (__remove_cv_t): New alias template.
1110         (is_void, is_integral, is_floating_point, is_pointer)
1111         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
1112         (is_member_point), __is_signed_integer, __is_unsigned_integer)
1113         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
1114         (__decay_selector): Use __remove_cv_t.
1115         (remove_cv): Add partial specializations for cv-qualified types.
1116         (__decay_t): New alias template.
1117         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
1118         __decay_t.
1119         (__enable_if_t): Move earlier in the file.
1120         (_Require): Use __enable_if_t.
1121         (swap(T&, T&)): Use _Require.
1122         (swap(T(&)[N])): Use __enable_if_t.
1123
1124 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1125
1126         Implement C++20 p1424 - 'constexpr' feature macro concerns,
1127         Issue 3256 - Feature testing macro for constexpr algorithms,
1128         and Issue 3257 - Missing feature testing macro update from P0858.
1129         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
1130         * include/bits/algorithmfwd.h: Ditto.
1131         * include/std/utility: Ditto.
1132         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
1133         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
1134         __cpp_lib_constexpr macro in <algorith>.
1135         * testsuite/20_util/exchange/constexpr.cc: Add check for
1136         __cpp_lib_constexpr macro in <utility>.
1137         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
1138         __cpp_lib_constexpr_algorithms.
1139         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
1140         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
1141         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
1142         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
1143         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
1144         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
1145         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
1146         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
1147         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
1148         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
1149         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
1150         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
1151         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
1152         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
1153         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
1154         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
1155         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
1156         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
1157         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
1158         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
1159         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
1160         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
1161         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
1162         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
1163         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
1164         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
1165         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
1166         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
1167         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
1168         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
1169         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
1170         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
1171         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
1172         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
1173         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
1174         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
1175         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
1176         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
1177         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
1178         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
1179         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
1180         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
1181         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
1182         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
1183         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
1184         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
1185         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
1186         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
1187         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
1188         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
1189         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
1190         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
1191         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
1192
1193 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1194
1195         Update docs for recent <span> and constexpr lib changes.
1196         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
1197         p1023r0, p1085r2 status.
1198         * doc/html/manual/status.html: Regenerate.
1199
1200 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
1201
1202         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
1203         final offsets with constants.
1204
1205 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
1206
1207         * include/bits/range_access.h (__adl_to_address): Remove.
1208         * include/std/span (__is_base_derived_safe_convertible_v): Replace
1209         with span::__is_compatible.
1210         (__is_std_array_v): Replace with __is_std_array class template and
1211         partial specializations.
1212         (__is_std_array, __is_std_span): New class templates and partial
1213         specializations.
1214         (span::__is_compatible): New alias template for SFINAE constraints.
1215         (span::span(element_type (&)[N])): Remove redundant constraints. Do
1216         not use __adl_data to obtain a pointer.
1217         (span::span(array<value_type, N>&)): Likewise.
1218         (span::span(const array<value_type, N>&)): Likewise.
1219         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
1220         (span::iter_value_t, span::derived_from): New alias templates for
1221         SFINAE constraints, until the equivalents are supported in <concepts>
1222         and <iterator>.
1223         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
1224         for SFINAE constraints.
1225         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
1226         SFINAE constraints.
1227         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
1228         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
1229         Use std::to_address instead of __adl_to_address.
1230         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
1231         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
1232         template for SFINAE constraints.
1233         [!_GLIBCXX_P1394] (span::span(Container&))
1234         (span::span(const Container&)): Improve constraints.
1235         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
1236         (span::span(pointer, pointer)): Remove redundant cast of pointer.
1237         (span(const span<OType, OExtent>&)): New constructor.
1238
1239 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
1240
1241         * include/bits/range_access.h (ssize): Define for C++20.
1242         * testsuite/24_iterators/range_access_cpp20.cc: New test.
1243         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
1244         * doc/html/*: Regenerate.
1245
1246 2019-09-06  Florian Weimer  <fweimer@redhat.com>
1247
1248         * configure: Regenerate.
1249
1250 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1251
1252         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
1253         P1024R3. Remove entry for P0920R2.
1254         * include/std/span  (__cpp_lib_span): Change value.
1255         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
1256         constructor.
1257         (span): Replace __extent_storage base class with data member.
1258         (span::_S_subspan_extent): New function.
1259         (span::empty()): Add nodiscard attribute.
1260         (span::front, span::back, span::operator[]): Check preconditions.
1261         (span::first, span::last, span::subspan): Add noexcept. Improve
1262         precondition checks (LWG 3103).
1263         (get): Remove redundant condition from static_assert.
1264         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
1265         (as_writable_bytes): Add inline specifier.
1266         * include/std/version (__cpp_lib_span): Change value.
1267         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
1268         * testsuite/23_containers/span/front_neg.cc: Likewise.
1269         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
1270         * testsuite/23_containers/span/last_neg.cc: Improve test.
1271         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
1272         * testsuite/23_containers/span/1.cc: New test.
1273         * testsuite/23_containers/span/2.cc: New test.
1274         * testsuite/23_containers/span/back_assert_neg.cc: New test.
1275         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
1276         * testsuite/23_containers/span/first_assert_neg.cc: New test.
1277         * testsuite/23_containers/span/first_neg.cc: New test.
1278         * testsuite/23_containers/span/front_assert_neg.cc: New test.
1279         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
1280         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
1281         * testsuite/23_containers/span/last_assert_neg.cc: New test.
1282         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
1283         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
1284         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
1285         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
1286         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
1287         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
1288
1289 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
1290
1291         * include/Makefile.am: Add <span> header.
1292         * include/Makefile.in: Regenerate.
1293         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
1294         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
1295         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
1296         New functions for performing argument-dependent lookup of range
1297         customization points.
1298         * include/bits/stl_iterator.h (__normal_iterator): Add
1299         _GLIBCXX20_CONSTEXPR to all functions.
1300         * include/std/span: New header.
1301         * include/std/version (__cpp_lib_span): Define feature test macro.
1302         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
1303         * testsuite/23_containers/span/everything.cc: New test.
1304         * testsuite/23_containers/span/get_neg.cc: New test.
1305         * testsuite/23_containers/span/last_neg.cc: New test.
1306         * testsuite/23_containers/span/subspan_neg.cc: New test.
1307         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
1308         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
1309         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
1310
1311 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
1312
1313         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
1314         * doc/html/*: Regenerate.
1315
1316 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1317
1318         PR libstdc++/41861
1319         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
1320         pthread_cond_clockwait function.
1321         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
1322         * configure: Regenerate.
1323         * config.h.in: Regenerate.
1324         * include/std/condition_variable: (condition_variable): Rename
1325         __steady_clock_t typedef and add system_clock. Change __clock_t to be
1326         a typedef for the preferred clock to convert arbitrary other clocks to.
1327         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
1328         overload.
1329         (wait_until): Change __clock_t overload to use system_clock.
1330         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
1331         steady_clock overload that calls pthread_cond_clockwait.
1332         (__wait_until_impl): Change __clock_t overload to use system_clock.
1333         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
1334         steady_clock for __clock_t if pthread_cond_clockwait is available.
1335
1336 2019-09-04  Mike Crowe  <mac@mcrowe.com>
1337
1338         * testsuite/30_threads/condition_variable/members/2.cc (test01):
1339         Parameterise so that test can be run against an arbitrary clock.
1340         (main): Test using std::chrono::steady_clock and a user-defined
1341         clock in addition to the previous std::chrono::system_clock.
1342         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
1343
1344 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
1345
1346         * crossconfig.m4: Remove references to spu.
1347         * configure: Regenerate.
1348         * doc/xml/manual/appendix_contributing.xml: Remove references
1349         to __ea as "badword" for spu.
1350         * doc/html/manual/source_code_style.html: Regenerate.
1351         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
1352         to avoid __ea (as "badword" for spu).
1353         (__ellint_rj): Likewise.
1354
1355 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
1356
1357         PR other/79543
1358         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
1359         scanning to conform to the GNU Coding Standards.
1360         * configure: Regenerate.
1361
1362 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         * src/c++17/memory_resource.cc: Use __constinit keyword.
1365
1366 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1367
1368         * doc/xml/manual/abi.xml: Document 9.x library versions.
1369         * doc/html/*: Regenerate.
1370
1371 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
1372
1373         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
1374         (__detail::__to_chars_8_len): Remove.
1375         (__detail::__to_chars_8): Inline length calculation here.
1376         (__detail::__from_chars_binary): Use numeric_limits instead of
1377         CHAR_BIT.
1378
1379 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1380
1381         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1382         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
1383         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1384         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1385         Likewise.
1386
1387 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
1388
1389         * testsuite_files/util/testsuite_performance.h
1390         (resource_counter::start): Ignore unused malloc(0) result.
1391
1392 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
1393
1394         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
1395         Model Object Technologies): Adjust name and link.
1396
1397 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
1398
1399         * include/std/charconv (__detail::__to_chars_8)
1400         __detail::__to_chars_16): Replace array of precomputed digits with
1401         arithmetic operations to avoid CPU cache misses. Remove zero
1402         termination from array of digits to allow symbol merge with generic
1403         implementation of __detail::__to_chars. Replace final offsets with
1404         constants. Use __detail::__to_chars_len_2 instead of a generic
1405         __detail::__to_chars_len.
1406         (__detail::__to_chars): Remove zero termination from array of digits.
1407         (__detail::__to_chars_2): Leading digit is always '1'.
1408
1409 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1410
1411         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
1412
1413 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
1414
1415         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1416
1417 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
1418
1419         PR libstdc++/89164
1420         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
1421         to template parameters.
1422         * include/bits/stl_uninitialized.h (uninitialized_copy)
1423         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
1424         diagnose invalid uses.
1425         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
1426         Adjust expected error.
1427         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
1428         New test.
1429         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
1430         89164.cc: New test.
1431         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
1432         New test.
1433         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
1434         89164.cc: New test.
1435         * testsuite/23_containers/vector/cons/89164.cc: New test.
1436         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
1437
1438 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
1439
1440         PR libstdc++/91067
1441         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
1442         * configure: Regenerate.
1443         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
1444         missing symbols.
1445         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
1446         constructors.
1447         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1448
1449 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
1450
1451         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1452         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1453
1454 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
1455
1456         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
1457         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1458         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1459         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1460         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1461         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1462         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1463
1464 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
1465
1466         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
1467         (std::filesystem::__gnu_posix::lstat): Add return type.
1468
1469 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
1470
1471         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
1472
1473         * include/std/numeric (reduce): Fix Doxygen markup.
1474
1475         PR libstdc++/91371
1476         * include/std/type_traits (is_function): Simplify definition. Remove
1477         partial specializations for function types.
1478         (__is_referenceable): Simplify definition.
1479         * testsuite/20_util/bind/91371.cc: New test.
1480         * testsuite/20_util/is_function/91371.cc: New test.
1481         * testsuite/20_util/is_function/value.cc: Check more pointer types.
1482         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
1483         * testsuite/20_util/is_object/91371.cc: New test.
1484
1485 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
1486
1487         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
1488
1489 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
1490
1491         PR libstdc++/91456
1492         * include/bits/std_function.h (__check_func_return_type): Remove.
1493         (function::_Callable): Use std::__is_invocable_impl instead of
1494         __check_func_return_type.
1495         * include/std/type_traits (__is_invocable_impl): Add another defaulted
1496         template parameter. Define a separate partial specialization for
1497         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
1498         with a check that models delayed temporary materialization.
1499         * testsuite/20_util/function/91456.cc: New test.
1500         * testsuite/20_util/is_invocable/91456.cc: New test.
1501
1502 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
1503
1504         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
1505
1506 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
1507
1508         Implement C++20 p0879 - Constexpr for swap and swap related functions.
1509         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
1510         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
1511         New macro.
1512         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
1513         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
1514         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
1515         * include/bits/move.h (swap): Add constexpr.
1516         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
1517         (__gcd, __rotate, rotate, __partition, __heap_select)
1518         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
1519         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
1520         (__introselect, __chunk_insertion_sort, next_permutation)
1521         (prev_permutation, partition, partial_sort, nth_element, sort)
1522         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
1523         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
1524         (swap_ranges): Add constexpr.
1525         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
1526         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
1527         Add constexpr.
1528         * include/std/type_traits (swap): Add constexpr.
1529         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
1530         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
1531         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
1532         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
1533         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
1534         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
1535         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
1536         * testsuite/25_algorithms/partition/constexpr.cc: New test.
1537         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
1538         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
1539         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
1540         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
1541         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
1542         * testsuite/25_algorithms/sort/constexpr.cc: New test.
1543         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
1544         * testsuite/25_algorithms/swap/constexpr.cc: New test.
1545         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
1546
1547 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
1548
1549         PR libstdc++/90361
1550         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
1551
1552         * include/std/tuple (__unpack_std_tuple): New variable template and
1553         partial specializations.
1554         (apply, make_from_tuple): Add noexcept-specifier.
1555         * testsuite/20_util/tuple/apply/2.cc: New test.
1556         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
1557
1558 2019-08-09  Corentin Gay  <gay@adacore.com>
1559
1560         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
1561         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
1562         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
1563         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
1564         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
1565         Add call to `VERIFY`.
1566
1567 2019-08-09  Alexandre Oliva <oliva@adacore.com>
1568
1569         * include/ext/random
1570         (normal_mv_distribution::param_type::param_type): New private
1571         ctor taking a decomposed varcov matrix, for use by...
1572         (operator>>): ... this, befriended.
1573         * include/ext/random.tcc (operator>>): Use it.
1574         (normal_mv_distribution::param_type::_M_init_lower): Adjust
1575         member function name in exception message.
1576
1577 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
1578
1579         P0325R4 to_array from LFTS with updates
1580         * include/experimental/array (to_array): Qualify call to __to_array.
1581         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
1582         * include/std/version (__cpp_lib_to_array): Likewise.
1583         * testsuite/23_containers/array/creation/1.cc: New test.
1584         * testsuite/23_containers/array/creation/2.cc: New test.
1585         * testsuite/23_containers/array/creation/3_neg.cc: New test.
1586         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
1587         Use zero for dg-error line number.
1588
1589 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
1590
1591         P1651R0 bind_front should not unwrap reference_wrapper
1592         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
1593         * include/std/version (__cpp_lib_bind_front): Update value.
1594         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
1595         feature test macro.
1596         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
1597
1598         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
1599         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
1600         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
1601         specializations for __float128.
1602         * testsuite/26_numerics/numbers/float128.cc: New test.
1603
1604 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
1605
1606         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
1607         doxygen.nl.
1608
1609 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
1610
1611         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
1612         in <algorithm> and <utility> Headers.
1613         Implement C++20 p1023 - constexpr comparison operators for std::array.
1614         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
1615         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
1616         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
1617         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
1618         none_of, partition_copy, partition_point, remove, remove_if,
1619         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
1620         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
1621         count_if, equal, find, find_first_of, find_if, for_each, generate,
1622         generate_n, lexicographical_compare, merge, mismatch, replace,
1623         replace_if, search, search_n, set_difference, set_intersection,
1624         set_symmetric_difference, set_union, transform, unique_copy):
1625         Mark constexpr.
1626         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
1627         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
1628         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
1629         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
1630          Use const ref instead of ref arg;
1631         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
1632         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
1633         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
1634         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
1635         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
1636         __iter_comp_iter): Mark constexpr.
1637         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
1638         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
1639         none_of, any_of, find_if_not, is_partitioned, partition_point,
1640         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
1641         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
1642         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
1643         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
1644         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
1645         __equal_range, equal_range, binary_search, __includes, includes,
1646         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
1647         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
1648         is_sorted_until, __is_permutation, is_permutation, for_each, find,
1649         find_if, find_first_of, adjacent_find, count, count_if, search,
1650         search_n, transform, replace, replace_if, generate, generate_n,
1651         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
1652         set_intersection, __set_difference, set_difference,
1653         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
1654         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
1655         wrappers around __builtin_memmove and __builtin_memcmp
1656         respectively;
1657         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
1658         copy, move, __copy_move_b, __copy_move_backward_a,
1659         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
1660         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
1661         __lexicographical_compare_impl, __lexicographical_compare,
1662         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
1663         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
1664         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
1665         is_heap): Mark constexpr.
1666         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
1667         is_heap): Mark constexpr.
1668         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
1669         * include/std/array: Make comparison ops constexpr.
1670         * include/std/utility: Make exchange constexpr.
1671         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
1672         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
1673         * testsuite/23_containers/array/tuple_interface/
1674         tuple_element_neg.cc: Adjust.
1675         * testsuite/20_util/exchange/constexpr.cc: New.
1676         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
1677         * testsuite/25_algorithms/constexpr_macro.cc: New.
1678         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
1679         * testsuite/25_algorithms/all_of/constexpr.cc: New.
1680         * testsuite/25_algorithms/any_of/constexpr.cc: New.
1681         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
1682         * testsuite/25_algorithms/copy/constexpr.cc: New.
1683         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
1684         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
1685         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
1686         * testsuite/25_algorithms/count/constexpr.cc: New.
1687         * testsuite/25_algorithms/count_if/constexpr.cc: New.
1688         * testsuite/25_algorithms/equal/constexpr.cc: New.
1689         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
1690         * testsuite/25_algorithms/fill/constexpr.cc: New.
1691         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
1692         * testsuite/25_algorithms/find/constexpr.cc: New.
1693         * testsuite/25_algorithms/find_end/constexpr.cc: New.
1694         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
1695         * testsuite/25_algorithms/find_if/constexpr.cc: New.
1696         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
1697         * testsuite/25_algorithms/for_each/constexpr.cc: New.
1698         * testsuite/25_algorithms/generate/constexpr.cc: New.
1699         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
1700         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
1701         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
1702         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
1703         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
1704         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
1705         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
1706         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
1707         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
1708         * testsuite/25_algorithms/merge/constexpr.cc: New.
1709         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
1710         * testsuite/25_algorithms/none_of/constexpr.cc: New.
1711         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
1712         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
1713         * testsuite/25_algorithms/remove/constexpr.cc: New.
1714         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
1715         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
1716         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
1717         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
1718         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
1719         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
1720         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
1721         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
1722         * testsuite/25_algorithms/search/constexpr.cc: New.
1723         * testsuite/25_algorithms/search_n/constexpr.cc: New.
1724         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
1725         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
1726         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
1727         * testsuite/25_algorithms/set_union/constexpr.cc: New.
1728         * testsuite/25_algorithms/transform/constexpr.cc: New.
1729         * testsuite/25_algorithms/unique/constexpr.cc: New.
1730         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
1731         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
1732
1733 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
1734
1735         * include/std/memory (make_obj_using_allocator): Qualify call to
1736         uses_allocator_construction_args.
1737
1738         P0631R4 Math Constants
1739         * include/Makefile.am: Add new header.
1740         * include/Makefile.in: Regenerate.
1741         * include/precompiled/stdc++.h: Include new header.
1742         * include/std/numbers: New header.
1743         * include/std/version (__cpp_lib_math_constants): Define.
1744         * testsuite/26_numerics/numbers/1.cc: New test.
1745         * testsuite/26_numerics/numbers/2.cc: New test.
1746         * testsuite/26_numerics/numbers/3.cc: New test.
1747         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
1748
1749         * include/std/bit: Add Doxygen comments.
1750
1751         PR libstdc++/91308
1752         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
1753         constraints on deleter that should only apply to the constructor.
1754         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
1755         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
1756         constraints on deleter here.
1757         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
1758
1759 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
1760
1761         PR libstdc++/51333
1762         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
1763         constructor inline.
1764         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
1765         constructor.
1766         * testsuite/18_support/51333.cc: New test.
1767
1768 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
1769
1770         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
1771         to the Doxygen manual. Avoid a "here" link on the way.
1772         Fix another broken link to Doxygen docblocks.
1773
1774 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
1775
1776         * include/std/bit (__cpp_lib_endian): Define.
1777         * include/std/version (__cpp_lib_endian): Define.
1778         * testsuite/26_numerics/endian/2.cc: New.
1779         * testsuite/26_numerics/endian/3.cc: New.
1780         * testsuite/26_numerics/endian/4.cc: New.
1781
1782 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
1783
1784         * testsuite/util/testsuite_iterators.h
1785         (bidirectional_iterator_wrapper): Fix type comment.
1786         (random_access_iterator_wrapper): Likewise.
1787
1788 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
1789
1790         * include/std/bit (endian): Move definition here as per P1612R1.
1791         * include/std/type_traits (endian): Remove definition from here.
1792         * testsuite/20_util/endian/1.cc: Rename to ...
1793         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
1794
1795 2019-07-25  Martin Liska  <mliska@suse.cz>
1796             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
1797
1798         PR c++/23383
1799         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
1800         -fno-allocation-dce.
1801         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
1802         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
1803         * testsuite/ext/new_allocator/check_new.cc: Likewise.
1804
1805 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
1806
1807         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
1808         * testsuite/26_numerics/bit/bit.count/*: Here.
1809
1810         * include/std/bit (__rotl, __rotr): Change second parameter from
1811         unsigned int to int and handle negative values.
1812         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
1813         parameter from unsigned int to int. Add nodiscard attribute.
1814         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
1815         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
1816         shifts.
1817         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
1818         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
1819         shifts.
1820
1821         * include/std/bit (__ceil2): Make unrepresentable results undefined,
1822         as per P1355R2. Add debug assertion. Perform one left shift, not two,
1823         so that out of range values cause undefined behaviour. Ensure that
1824         shift will still be undefined if left operand is promoted.
1825         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
1826         unrepresentable values with checks that they are not core constant
1827         expressions.
1828         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
1829
1830 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
1831
1832         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
1833         sized deallocation size computation.
1834
1835 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
1836
1837         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1838
1839 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
1840
1841         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
1842         (~_Temporary_buffer()): Use latter.
1843         (_Temporary_buffer(_FIterator, size_type)): Likewise.
1844
1845 2019-07-17  Andreas Schwab  <schwab@suse.de>
1846
1847         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
1848
1849 2019-07-16  Jason Merrill  <jason@redhat.com>
1850
1851         * include/std/memory (uses_allocator_construction_args): Add parens
1852         around constraint.
1853
1854 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
1855
1856         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
1857
1858         * include/experimental/string_view (__detail::__idt): Remove.
1859         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1860         Use __type_identity_t instead of __detail::__idt;
1861         * include/std/string_view (__detail::__idt): Remove.
1862         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
1863         Use __type_identity_t instead of __detail::__idt;
1864         * include/std/type_traits (__type_identity_t): New alias template.
1865
1866         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
1867         and floating point atomics.
1868
1869 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
1870
1871         * doc/xml/manual/configure.xml: Improve documentation of
1872         --enable-libstdcxx-time option.
1873
1874         * include/bits/atomic_base.h (__atomic_impl): New namespace for
1875         wrappers around atomic built-ins.
1876         (__atomic_float, __atomic_ref): New class templates for use as base
1877         classes.
1878         * include/std/atomic (atomic<float>, atomic<double>)
1879         (atomic<long double>): New explicit specializations.
1880         (atomic_ref): New class template.
1881         (__cpp_lib_atomic_ref): Define.
1882         * include/std/version (__cpp_lib_atomic_ref): Define.
1883         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
1884         * testsuite/29_atomics/atomic_float/1.cc: New test.
1885         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
1886         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
1887         * testsuite/29_atomics/atomic_ref/float.cc: New test.
1888         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
1889         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
1890         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
1891         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
1892
1893 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
1894
1895         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
1896         throw() with _GLIBCXX_NOTHROW.
1897         (__atomic_add_dispatch): Return after performing atomic increment.
1898
1899 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
1900
1901         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
1902         (__exchange_and_add): Replace static specifier with always_inline
1903         attribute.
1904         (__exchange_and_add_single, __atomic_add_single): Likewise.
1905         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
1906         combine !__gthread_active_p() and !__GTHREADS branches.
1907
1908 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
1909
1910         PR libstdc++/91067
1911         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
1912         * configure: Regenerate.
1913         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
1914         missing symbols.
1915         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
1916         * testsuite/util/testsuite_abi.cc: Add new symbol version.
1917
1918 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
1919
1920         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
1921         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
1922         instead of __is_identifier to detect Clang support.
1923
1924 2019-07-02  Jim Wilson  <jimw@sifive.com>
1925
1926         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
1927         and xmllint.
1928         * configure: Regenerate.
1929
1930 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
1931
1932         PR libstdc++/91012
1933         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
1934         for the what_arg parameters.
1935         (filesystem_error::filesystem_error): Pass system_error::what() to
1936         the _Impl constructor.
1937         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
1938         filesystem_error::what() contains system_error::what().
1939
1940 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
1941
1942         * include/std/charconv (chars_format): Define bitmask type.
1943         * testsuite/20_util/to_chars/chars_format.cc: New test.
1944
1945         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
1946         * include/std/bit (_If_is_unsigned_integer_type): Remove.
1947         (_If_is_unsigned_integer): Use __is_unsigned_integer.
1948         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
1949         (countl_one(byte), countr_zero(byte), countr_one(byte))
1950         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
1951         (log2p1(byte)): Remove.
1952         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
1953         (__detail::__is_int_to_chars_type): Remove.
1954         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
1955         and __is_unsigned_integer.
1956         * include/std/type_traits (__is_one_of): Move here from <charconv>.
1957         (__is_signed_integer, __is_unsigned_integer): New helpers.
1958         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
1959         std::byte overload.
1960         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1961         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1962         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1963         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
1964         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
1965         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
1966         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
1967         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
1968         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
1969         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
1970
1971 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
1972
1973         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
1974         function.
1975
1976 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
1977
1978         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
1979         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
1980         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
1981         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
1982
1983 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
1984
1985         * include/std/numeric (midpoint(T, T)): Change implementation for
1986         floating-point types to avoid incorrect rounding of denormals.
1987         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
1988         rounding with denormals.
1989         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
1990         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
1991
1992         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
1993
1994 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
1995
1996         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
1997         stage of bootstrap.
1998         * configure: Regenerate.
1999
2000         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
2001         Qualify calls to __never_valueless.
2002
2003         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
2004         C++17 working draft.
2005
2006         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
2007         vector<bool> for test.
2008         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2009
2010 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
2011
2012         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
2013         private.
2014         (istream_iterator::_M_read()): Do not check stream state before
2015         attempting extraction. Set stream pointer to null when extraction
2016         fails (P0738R2).
2017         (operator==(const istream_iterator&, const istream_iterator&)): Change
2018         to be a hidden friend of istream_iterator.
2019         (operator!=(const istream_iterator&, const istream_iterator&)):
2020         Likewise.
2021         (ostream_iterator::ostream_iterator()): Add default constructor.
2022         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
2023         addressof.
2024         * testsuite/24_iterators/istream_iterator/1.cc: New test.
2025         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
2026         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
2027         constructor taking a string.
2028         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
2029         New test.
2030
2031 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
2032             Jonathan Wakely  <jwakely@redhat.com>
2033
2034         PR libstdc++/90945
2035         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
2036         values of type bool for vector<bool> elements.
2037         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
2038         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2039
2040 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
2041
2042         PR libstdc++/90920 partially revert r263433
2043         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
2044         (rotate): Remove checks.
2045         * testsuite/25_algorithms/rotate/90920.cc: New test.
2046
2047         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
2048         category used in invocable check.
2049         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
2050         * testsuite/26_numerics/reduce/2.cc: New test.
2051
2052 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
2053
2054         * include/bits/algorithmfwd.h: Change title of doc group.
2055         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
2056         P0024R2.
2057         * include/bits/stl_numeric.h: Define doc group and add algos to it.
2058         * include/std/numeric (__is_random_access_iter): New internal trait.
2059         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
2060         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
2061         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
2062         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
2063         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
2064         * testsuite/26_numerics/reduce/1.cc: New test.
2065         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
2066         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
2067         * testsuite/26_numerics/transform_reduce/1.cc: New test.
2068         * testsuite/util/testsuite_iterators.h (test_container::size()): New
2069         member function.
2070
2071         * include/c_global/cstddef (std::byte): Perform arithmetic operations
2072         in unsigned int to avoid promotion (LWG 2950).
2073
2074 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2075
2076         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
2077         failure on AIX.
2078
2079         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
2080
2081         PR libstdc++/90281 Fix string conversions for filesystem::path
2082         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
2083         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
2084         __str_codecvt_in_all to fail for partial conversions and throw on
2085         error.
2086         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
2087         (path::_Cvt<char8_t>): Add explicit specialization.
2088         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
2089         overloads.
2090         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2091         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
2092         instead of codecvt_utf8. Use __str_codecvt_in_all and
2093         __str_codecvt_out_all.
2094         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2095         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
2096         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2097         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
2098         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
2099         after converting to UTF-8.
2100         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
2101         __str_codecvt_in_all.
2102         (path::string): Fix initialization of string types with different
2103         allocators.
2104         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2105         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2106         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
2107         runtime conditions.
2108         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
2109         return false for partial conversions.
2110         * include/experimental/bits/fs_path.h (u8path):
2111         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
2112         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
2113         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
2114         instead of codecvt_utf8. Use __str_codecvt_in_all and
2115         __str_codecvt_out_all.
2116         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2117         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
2118         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2119         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
2120         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
2121         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2122         __str_codecvt_in_all.
2123         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2124         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2125         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
2126         __str_codecvt_in_all.
2127         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
2128         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
2129         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
2130         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
2131         strings and with Unicode characters outside the basic multilingual
2132         plane.
2133         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
2134         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
2135         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
2136         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
2137         * testsuite/experimental/filesystem/path/native/string.cc: Test with
2138         empty strings and with Unicode characters outside the basic
2139         multilingual plane.
2140
2141 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
2142             Jonathan Wakely  <jwakely@redhat.com>
2143
2144         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
2145         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
2146         deallocate node if insertion fails.
2147         (_Hashtable::_M_insert_multi_node): Likewise.
2148         (_Hashtable::_M_reinsert_node): Pass additional key argument.
2149         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
2150         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
2151         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
2152         (_Hashtable::extract(const _Key&)): Likewise.
2153         (_Hashtable::_M_merge_unique): Pass additional key argument.
2154         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
2155         _Scoped_node.
2156         (_Hashtable::_M_insert): Likewise.
2157         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
2158         (_Hashtable_alloc): Add comments to functions with misleading names.
2159
2160 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2161
2162         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
2163         for std::string.
2164         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
2165         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
2166         header for std::allocator.
2167         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
2168         using-declaration for std::size_t.
2169         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
2170         Likewise.
2171         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
2172         std::istream.
2173         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
2174         * testsuite/experimental/map/erasure.cc: Include <string> for
2175         std::string.
2176         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
2177
2178 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
2179
2180         * include/experimental/type_traits (experimental::nonesuch): Use
2181         pragma to disable -Wctor-dtor-privacy warnings.
2182         * include/std/type_traits (__is_convertible_helper<From, To, false>)
2183         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
2184
2185         * include/std/version (__cpp_lib_bind_front): Add missing macro.
2186
2187 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
2188
2189         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
2190         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
2191         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
2192         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
2193
2194         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
2195         (variant::emplace): Change static_assert messages from "should be"
2196         to "must be".
2197         (hash<monostate>::operator()): Remove name of unused parameter.
2198
2199         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
2200         expression.
2201
2202         * include/Makefile.am: Add new <bits/charconv.h> header.
2203         * include/Makefile.in: Regenerate.
2204         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
2205         (to_string(long), to_string(unsigned long), to_string(long long))
2206         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
2207         * include/bits/charconv.h: New header.
2208         (__detail::__to_chars_len): Move here from <charconv>.
2209         (__detail::__to_chars_10_impl): New function extracted from
2210         __detail::__to_chars_10.
2211         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
2212         (__to_chars_unsigned_type): New class template that reuses
2213         __make_unsigned_selector_base::__select to pick a type.
2214         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
2215         (__detail::__to_chars_len): Move to new header.
2216         (__detail::__to_chars_10): Add inline specifier. Move code doing the
2217         output to __detail::__to_chars_10_impl and call that.
2218         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
2219         * testsuite/21_strings/basic_string/numeric_conversions/char/
2220         to_string.cc: Fix reference in comment. Remove unused variable.
2221         * testsuite/21_strings/basic_string/numeric_conversions/char/
2222         to_string_int.cc: New test.
2223
2224 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
2225
2226         Fix ConstexprIterator requirements tests - No constexpr algorithms!
2227         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2228         Replace copy with hand-rolled loop.
2229         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2230         Ditto.
2231
2232 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
2233
2234         Test for C++20 p0858 - ConstexprIterator requirements.
2235         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
2236         New test.
2237         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
2238         New test.
2239
2240 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
2241
2242         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
2243         project) standards.
2244         * include/bits/c++config: Rename all macros of the form __PSTL* to
2245         _PSTL*.
2246         * include/std/algorithm: Likewise.
2247         * include/std/execution: Likewise.
2248         * include/std/numeric: Likewise.
2249         * include/std/memory: Likewise.
2250         * include/pstl/glue_memory_impl.h: Likewise.
2251         * include/pstl/numeric_impl.h: Likewise.
2252         * include/pstl/glue_memory_defs.h: Likewise.
2253         * include/pstl/execution_defs.h: Likewise.
2254         * include/pstl/utils.h: Likewise.
2255         * include/pstl/algorithm_fwd.h: Likewise.
2256         * include/pstl/unseq_backend_simd.h: Likewise.
2257         * include/pstl/glue_execution_defs.h: Likewise.
2258         * include/pstl/algorithm_impl.h: Likewise.
2259         * include/pstl/parallel_impl.h: Likewise.
2260         * include/pstl/memory_impl.h: Likewise.
2261         * include/pstl/glue_numeric_defs.h: Likewise.
2262         * include/pstl/parallel_backend_utils.h: Likewise.
2263         * include/pstl/glue_algorithm_defs.h: Likewise.
2264         * include/pstl/parallel_backend.h: Likewise.
2265         * include/pstl/glue_numeric_impl.h: Likewise.
2266         * include/pstl/parallel_backend_tbb.h: Likewise.
2267         * include/pstl/numeric_fwd.h: Likewise.
2268         * include/pstl/glue_algorithm_impl.h: Likewise.
2269         * include/pstl/execution_impl.h: Likewise.
2270         * include/pstl/pstl_config.h: Likewise.
2271         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2272         * testsuite/util/pstl/test_utils.h: Likewise.
2273         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
2274         Likewise.
2275         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
2276         Likewise.
2277         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
2278         Likewise.
2279         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
2280         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
2281         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
2282         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
2283         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
2284         Likewise.
2285         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
2286         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
2287         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
2288         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
2289         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
2290         Likewise.
2291         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
2292         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
2293         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
2294         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
2295         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
2296         Likewise.
2297         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
2298         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
2299         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
2300         Likewise.
2301         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
2302         Likewise.
2303         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
2304         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
2305         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
2306         Likewise.
2307         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
2308         Likewise.
2309         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
2310         Likewise.
2311         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
2312         Likewise.
2313         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
2314         Likewise.
2315         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
2316         Likewise.
2317         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
2318         Likewise.
2319         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
2320         Likewise.
2321         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
2322         Likewise.
2323         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
2324         Likewise.
2325         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
2326         Likewise.
2327         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
2328
2329         Rename header guards to be consistent with upstream project's
2330         conventions.
2331         * include/pstl/glue_memory_impl.h: Rename all macros of the form
2332         _PSTL_(.*)_H to _PSTL_\U\1_H.
2333         * include/pstl/numeric_impl.h: Likewise.
2334         * include/pstl/glue_memory_defs.h: Likewise.
2335         * include/pstl/execution_defs.h: Likewise.
2336         * include/pstl/utils.h: Likewise.
2337         * include/pstl/algorithm_fwd.h: Likewise.
2338         * include/pstl/unseq_backend_simd.h: Likewise.
2339         * include/pstl/glue_execution_defs.h: Likewise.
2340         * include/pstl/algorithm_impl.h: Likewise.
2341         * include/pstl/parallel_impl.h: Likewise.
2342         * include/pstl/memory_impl.h: Likewise.
2343         * include/pstl/glue_numeric_defs.h: Likewise.
2344         * include/pstl/parallel_backend_utils.h: Likewise.
2345         * include/pstl/glue_algorithm_defs.h: Likewise.
2346         * include/pstl/parallel_backend.h: Likewise.
2347         * include/pstl/glue_numeric_impl.h: Likewise.
2348         * include/pstl/parallel_backend_tbb.h: Likewise.
2349         * include/pstl/numeric_fwd.h: Likewise.
2350         * include/pstl/glue_algorithm_impl.h: Likewise.
2351         * include/pstl/execution_impl.h: Likewise.
2352         * include/pstl/pstl_config.h: Likewise.
2353         * testsuite/util/pstl/pstl_test_config.h: Likewise.
2354
2355         Synchronize libstdc++ parallel algorithms with upstream
2356         project.
2357         * include/pstl/algorithm_fwd.h: Synchronize with
2358         upstream PSTL project.
2359         * include/pstl/algorithm_impl.h: Likewise.
2360         * include/pstl/execution_defs.h: Likewise.
2361         * include/pstl/execution_impl.h: Likewise.
2362         * include/pstl/glue_algorithm_impl.h: Likewise.
2363         * include/pstl/glue_execution_defs.h: Likewise.
2364         * include/pstl/numeric_fwd.h: Likewise.
2365         * include/pstl/numeric_impl.h: Likewise.
2366         * include/pstl/parallel_backend.h: Likewise.
2367         * include/pstl/pstl_config.h: Likewise.
2368         * include/pstl/unseq_backend_simd.h: Likewise.
2369         * include/pstl/parallel_backend_serial.h: New file.
2370         * include/Makefile.am (pstl_headers): Add
2371         parallel_backend_serial.h.
2372         * include/Makefile.in: Regenerate.
2373
2374         Clean up non-conforming names
2375         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
2376         Uglfiy copy_range1 and copy_range2
2377         (__pattern_walk2_n): Rename local n to __n
2378         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
2379         Rename parameter _T to _Tp.
2380
2381         Integrate non-TBB serial backend support
2382         * include/bits/c++config: Adjust TBB detection logic to select serial
2383         PSTL backend if no TBB present.
2384         * testsuite/utils/pstl/test_utils.h: Remove check for
2385         _PSTL_USE_PAR_POLICIES
2386
2387 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
2388
2389         * testsuite/24_iterators/container_access.cc: Move dg-options before
2390         dg-do directive so the target check uses the -std option.
2391
2392         PR libstdc++/90770
2393         * configure: Regenerate.
2394         * src/Makefile.am (stamp-debug): Also test for missing makefile.
2395         * src/Makefile.in: Regenerate.
2396
2397 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
2398
2399         * include/std/array: Do not include <stdexcept>.
2400         * include/std/optional: Include <exception> and
2401         <bits/exception_defines.h> instead of <stdexcept>.
2402         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
2403         for std::isalnum.
2404         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
2405         std::allocator.
2406         * testsuite/23_containers/map/erasure.cc: Include <string>.
2407         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2408
2409         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
2410         dg-prune-output for different C++98 diagnostic.
2411         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
2412         Likewise.
2413         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
2414         Likewise.
2415         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
2416         Likewise.
2417         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
2418         Likewise.
2419         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
2420         Likewise.
2421         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
2422         Likewise.
2423         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
2424         Likewise.
2425         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
2426         Likewise.
2427         * testsuite/23_containers/vector/requirements/dr438/
2428         constructor_1_neg.cc: Likewise.
2429         * testsuite/23_containers/vector/requirements/dr438/
2430         constructor_2_neg.cc: Likewise.
2431         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
2432         Likewise.
2433         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
2434
2435         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
2436         Do not test allocator rebinding extension for C++2a.
2437         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2438         dg-do directive for C++17 and C++2a.
2439
2440         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2441         1_c++0x.cc: Remove redundant test.
2442         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2443         2.cc: Use target selector instead of preprocessor condition.
2444         * testsuite/23_containers/deque/requirements/explicit_instantiation/
2445         3.cc: Do not run test for C++2a.
2446         * testsuite/23_containers/forward_list/requirements/
2447         explicit_instantiation/3.cc: Likewise.
2448         * testsuite/23_containers/forward_list/requirements/
2449         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2450         for C++2a.
2451         * testsuite/23_containers/list/requirements/explicit_instantiation/
2452         1_c++0x.cc: Remove redundant test.
2453         * testsuite/23_containers/list/requirements/explicit_instantiation/
2454         2.cc: Use target selector instead of preprocessor condition.
2455         * testsuite/23_containers/list/requirements/explicit_instantiation/
2456         3.cc: Do not run test for C++2a.
2457         * testsuite/23_containers/list/requirements/explicit_instantiation/
2458         5.cc: Do not test allocator rebinding extension for C++2a.
2459         * testsuite/23_containers/map/requirements/explicit_instantiation/
2460         1_c++0x.cc: Remove redundant test.
2461         * testsuite/23_containers/map/requirements/explicit_instantiation/
2462         2.cc: Adjust comment.
2463         * testsuite/23_containers/map/requirements/explicit_instantiation/
2464         3.cc: Do not run test for C++2a.
2465         * testsuite/23_containers/map/requirements/explicit_instantiation/
2466         5.cc: Do not test allocator rebinding extension for C++2a.
2467         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2468         1_c++0x.cc: Remove redundant test.
2469         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2470         3.cc: Do not run test for C++2a.
2471         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
2472         5.cc: Do not test allocator rebinding extension for C++2a.
2473         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2474         3.cc: Do not run test for C++2a.
2475         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
2476         5.cc: Do not test allocator rebinding extension for C++2a.
2477         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
2478         Do not run test for C++2a.
2479         * testsuite/23_containers/set/requirements/explicit_instantiation/
2480         1_c++0x.cc: Remove redundant test.
2481         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
2482         Do not test allocator rebinding extension for C++2a.
2483         * testsuite/23_containers/unordered_map/requirements/
2484         explicit_instantiation/3.cc: Likewise.
2485         * testsuite/23_containers/unordered_map/requirements/
2486         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2487         for C++2a.
2488         * testsuite/23_containers/unordered_multimap/requirements/
2489         explicit_instantiation/3.cc: Do not run test for C++2a.
2490         * testsuite/23_containers/unordered_multimap/requirements/
2491         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2492         for C++2a.
2493         * testsuite/23_containers/unordered_multiset/requirements/
2494         explicit_instantiation/3.cc: Do not run test for C++2a.
2495         * testsuite/23_containers/unordered_multiset/requirements/
2496         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2497         for C++2a.
2498         * testsuite/23_containers/unordered_set/requirements/
2499         explicit_instantiation/3.cc: Do not run test for C++2a.
2500         * testsuite/23_containers/unordered_set/requirements/
2501         explicit_instantiation/5.cc: Do not test allocator rebinding extension
2502         for C++2a.
2503         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2504         2.cc: Remove redundant test.
2505         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
2506         3.cc: Do not run test for C++2a.
2507         * testsuite/23_containers/vector/requirements/explicit_instantiation/
2508         3.cc: Likewise.
2509
2510         * include/std/type_traits (is_empty, is_polymorphic, is_final)
2511         (is_abstract, is_aggregate): Remove static_assert.
2512         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
2513         from builtin only.
2514         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
2515         missing -std=gnu++17 option.
2516         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
2517         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
2518         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
2519         from builtin only.
2520
2521         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
2522         * testsuite/18_support/set_unexpected.cc: Likewise.
2523         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
2524         void.
2525         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
2526         function to be valid in C++11.
2527         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
2528         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
2529         include Library Fundamentals or Networking headers in C++11 mode.
2530         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
2531
2532         * include/std/tuple (_TC): Replace with _TupleConstraints.
2533         (_TupleConstraints): New helper for SFINAE constraints, with more
2534         expressive member functions to reduce duplication when used.
2535         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
2536         (tuple::_TCC): Replace dummy type parameter with bool non-type
2537         parameter that can be used to check the pack size.
2538         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
2539         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
2540         checking constraints in constructors.
2541         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
2542         New SFINAE helpers.
2543         (tuple::tuple): Use new helpers to reduce repitition in constraints.
2544         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
2545         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
2546         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
2547         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
2548         constraints in constructors.
2549         (tuple::__is_alloc_arg()): New SFINAE helpers.
2550         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
2551         constraints.
2552         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
2553         * testsuite/20_util/tuple/cons/90700.cc: New test.
2554         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
2555         to meet new constraint on allocator-extended default constructor.
2556
2557 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2558
2559         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
2560         * include/bits/stl_multimap.h (multimap): Likewise.
2561
2562 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
2563
2564         Rename variables and cleanup comments.
2565         * include/bits/hashtable_policy.h
2566         * include/bits/hashtable.h
2567
2568 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
2569
2570         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
2571         Fix bgcolor for P0340R3.
2572         * doc/html/*: Regenerate.
2573
2574         PR libstdc++/90686
2575         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
2576         <experimental/memory_resource>.
2577         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
2578         P0339R6, P0340R3, P1164R1 and P1357R1.
2579         * doc/html/*: Regenerate.
2580
2581         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
2582         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
2583         allocator::value_type assertion for C++2a.
2584         * include/bits/hashtable.h: Likewise.
2585         * include/bits/stl_deque.h: Likewise.
2586         * include/bits/stl_list.h: Likewise.
2587         * include/bits/stl_map.h: Likewise.
2588         * include/bits/stl_multimap.h: Likewise.
2589         * include/bits/stl_multiset.h: Likewise.
2590         * include/bits/stl_set.h: Likewise.
2591         * include/bits/stl_vector.h: Likewise.
2592         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
2593         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
2594         * testsuite/23_containers/list/48101-3_neg.cc: New test.
2595         * testsuite/23_containers/map/48101-3_neg.cc: New test.
2596         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
2597         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
2598         * testsuite/23_containers/set/48101-3_neg.cc: New test.
2599         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
2600         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
2601         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
2602         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
2603         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
2604
2605 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
2606
2607         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
2608
2609 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2610
2611         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
2612         constructors.
2613         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
2614         function.
2615         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
2616
2617 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2618
2619         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
2620
2621         PR libstdc++/90682
2622         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
2623         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
2624         * libsupc++/eh_term_handler.h: New header defining
2625         _GLIBCXX_DEFAULT_TERM_HANDLER.
2626         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
2627         (set_terminate): Restore default handler when argument is null.
2628         (set_unexpected): Likewise.
2629         * testsuite/18_support/set_terminate.cc: New test.
2630         * testsuite/18_support/set_unexpected.cc: New test.
2631
2632         * include/backward/hashtable.h (size_t, ptrdiff_t)
2633         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
2634         (distance, vector, pair, __iterator_category): Remove
2635         using-declarations that add these names to namespace __gnu_cxx.
2636         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
2637         * include/ext/debug_allocator.h (size_t): Likewise.
2638         * include/ext/functional (size_t, unary_function, binary_function)
2639         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
2640         Likewise.
2641         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
2642         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
2643         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
2644         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
2645         * include/ext/numeric (iota): Fix outdated comment.
2646         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
2647         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
2648         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
2649         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
2650         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
2651         Likewise.
2652         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
2653         (allocator, __true_type, __false_type): Likewise.
2654
2655 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
2656
2657         PR libstdc++/71579
2658         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
2659         New helpers for checking preconditions in traits.
2660         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
2661         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
2662         (is_destructible, is_nothrow_destructible, is_constructible)
2663         (is_default_constructible, is_copy_constructible)
2664         (is_move_constructible, is_nothrow_default_constructible)
2665         (is_nothrow_constructible, is_nothrow_copy_constructible)
2666         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
2667         (is_nothrow_assignable, is_nothrow_copy_assignable)
2668         (is_nothrow_move_assignable, is_trivially_constructible)
2669         (is_trivially_copy_constructible, is_trivially_move_constructible)
2670         is_trivially_assignable, is_trivially_copy_assignable)
2671         (is_trivially_move_assignable, is_trivially_destructible)
2672         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
2673         (is_invocable_r, is_nothrow_invocable)
2674         (has_unique_object_representations, is_aggregate): Add static_asserts
2675         to make sure that type traits are not misused with incomplete types.
2676         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
2677         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
2678         base characteristics without assertions that can be reused in other
2679         traits.
2680         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
2681         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
2682         test.
2683         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
2684         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
2685         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
2686         * testsuite/20_util/is_class/value.cc: Check incomplete type.
2687         * testsuite/20_util/is_function/value.cc: Likewise.
2688         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
2689         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
2690         test.
2691         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
2692         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
2693         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
2694         * testsuite/20_util/is_union/value.cc: Likewise.
2695         * testsuite/20_util/is_void/value.cc: Likewise.
2696         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
2697
2698 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
2699
2700         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
2701         Add new private member function.
2702         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
2703         (random_device::_M_init_pretr1(const string&)): Call new private
2704         member with string data.
2705         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
2706         Define.
2707         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
2708         test using COW strings.
2709         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
2710         a value from the device.
2711         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
2712         Fix typo in token string.
2713
2714 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
2715
2716         LWG2788 basic_string spurious use of a default constructible allocator
2717         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
2718         (basic_string::_M_replace_dispatch): Construct temporary string with
2719         the current allocator.
2720         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
2721         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
2722
2723 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
2724
2725         * doc/xml/manual/diagnostics.xml: Update list of headers that define
2726         exception classes.
2727         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
2728         section about new/delete overloads. Improve section on verbose
2729         terminate handler.
2730         * doc/html/*: Regenerate.
2731
2732         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
2733         P0811R3. Change status of P1353R0.
2734         * doc/html/*: Regenerate.
2735
2736         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
2737         documentation of implementation-defined types for [thread.req.native].
2738         * doc/xml/manual/status_cxx2017.xml: Update documentation of
2739         implementation-defined strings for [variant.bad.access]. Fix typo in
2740         documentation of implementation-defined support for [fs.conform.9945].
2741         * doc/html/*: Regenerate.
2742
2743 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
2744
2745         PR libstdc++/85494
2746         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
2747         that fails on mingw-w64.
2748
2749         PR libstdc++/88881
2750         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2751         (status(const path&, error_code&)): Use parent_path() to remove
2752         trailing slash.
2753         (symlink_status(const path&, error_code&)): Duplicate workaround for
2754         bug in _wstat for paths with trailing slash.
2755         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
2756         with trailing slash.
2757         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2758         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
2759
2760         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
2761         once instead of building it iteratively.
2762
2763         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
2764
2765         PR libstdc++/85494 use rdseed and rand_s in std::random_device
2766         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
2767         the assembler supports rdseed.
2768         * config.h.in: Regenerate.
2769         * configure: Regenerate.
2770         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
2771         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
2772         * doc/html/*: Regenerate.
2773         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
2774         * include/bits/random.h (random_device::random_device()): Always call
2775         _M_init rather than _M_init_pretr1.
2776         (random_device::random_device(const string&)): Likewise.
2777         (random_device::operator()()): Always call _M_getval().
2778         (random_device::_M_file): Replace first member of union with an
2779         anonymous struct, with _M_file as its first member.
2780         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
2781         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
2782         (USE_MT19937): Define if none of the above are defined.
2783         (USE_POSIX_FILE_IO): Define.
2784         (_M_strtoul): Remove.
2785         [USE_RDSEED] (__x86_rdseed): Define new function.
2786         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
2787         (random_device::_M_init(const string&)): Initialize new union members.
2788         Add support for "rdseed" and "rand_s" tokens. Decide what the
2789         "default" token does according to which USE_* macros are defined.
2790         [USE_POSIX_FILE_IO]: Store a file descriptor.
2791         [USE_MT19937]: Forward to _M_init_pretr1 instead.
2792         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
2793         code from _M_strtoul.
2794         [!USE_MT19937]: Call _M_init, transforming the old default token or
2795         numeric tokens to "default".
2796         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
2797         (random_device::_M_getval()): Use new union members to obtain a
2798         random number from the stored function pointer or file descriptor.
2799         [USE_MT19937]: Obtain a value from the mt19937 engine.
2800         (random_device::_M_getval_pretr1()): Call _M_getval().
2801         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
2802         instead of fileno.
2803         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
2804         * testsuite/26_numerics/random/random_device/85494.cc: New test.
2805
2806 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
2807
2808         PR libstdc++/90634
2809         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
2810         _M_split_cmpts() for a path with multiple components.
2811         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
2812         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
2813         components and reserve space in vector. Return early when there is
2814         only one component.
2815         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
2816         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
2817
2818         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
2819         form of std::equals for C++11 compatibility.
2820
2821 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
2822
2823         * doc/xml/manual/appendix_contributing.xml: Update pointer to
2824         C++ standard at ansi.org.
2825
2826 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
2827
2828         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
2829         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
2830         to "run".
2831
2832         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
2833         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
2834
2835 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2836
2837         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
2838         tests to ...
2839         * testsuite/20_util/function_objects/invoke/3.cc: New test.
2840         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
2841         "compile" test to "run".
2842
2843         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
2844         * doc/html/*: Regenerate.
2845         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
2846         rvalue aliasing constructor.
2847         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
2848         (reinterpret_pointer_cast): Add overloads taking rvalues.
2849         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
2850         Add rvalue aliasing constructor.
2851         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
2852         "run" and check return values as well as types.
2853         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
2854         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
2855         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
2856         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
2857         values.
2858
2859         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
2860         * doc/xml/manual/intro.xml: Likewise.
2861         * include/std/future (__create_task_state): Add default arguments
2862         to make providing an allocator optional.
2863         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
2864         instead of delegating to another constructor.
2865         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
2866         define allocator-extended constructors for C++17 and later.
2867         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
2868         C++11 and C++14.
2869         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
2870         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
2871         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
2872
2873 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
2874
2875         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
2876         Don't run the libstdc++/83237 part on simulator targets.
2877
2878 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
2879
2880         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
2881         P0040R3.
2882         * doc/html/*: Regenerate.
2883
2884         * include/experimental/any (__any_caster): Use RTTI if comparing
2885         addresses fails, to support non-unique addresses in shared libraries.
2886         * include/std/any (__any_caster): Likewise.
2887
2888         PR libstdc++/90220
2889         * include/experimental/any (__any_caster): Constrain to only be
2890         callable for object types. Use remove_cv_t instead of decay_t.
2891         If the type decays or isn't copy constructible, compare the manager
2892         function to a dummy specialization.
2893         (__any_caster): Add overload constrained for non-object types.
2894         (any::_Manager_internal<_Op>): Add dummy specialization.
2895         * testsuite/experimental/any/misc/any_cast.cc: Test function types
2896         and array types.
2897
2898 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
2899
2900         PR libstdc++/90557
2901         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
2902         reversed arguments to uninitialized_copy_n.
2903         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
2904         is unchanged by copy assignment.
2905         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
2906         compare path components.
2907
2908         PR libstdc++/77691
2909         * include/experimental/memory_resource: Add system header pragma and
2910         do not define anything unless compiled as C++14 or later.
2911         (__resource_adaptor_common::__guaranteed_alignment): Remove.
2912         (__resource_adaptor_imp::do_allocate): If the requested alignment
2913         is a fundamental alignment then either allocate directly from _M_alloc
2914         or call the new _M_allocate function.
2915         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
2916         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
2917         of the allocator rebound to a POD type with the specified alignment.
2918         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
2919         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2920         Adjust expected allocation sizes.
2921         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
2922         xfail for Solaris x86.
2923
2924 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
2925
2926         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
2927         * include/pstl/execution_defs.h (__enable_if_execution_policy):
2928         Use std::__remove_cvref_t when building with GCC.
2929
2930 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
2931
2932         PR libstdc++/90252
2933         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2934         Use "additional_flags" to pass -ltbb to v3_target_compile command.
2935         Use check_v3_target_prop_cached to cache the result of the test.
2936
2937         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
2938
2939 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2940
2941         PR libstdc++/90252
2942         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2943         Changed v3_target_compile check from preprocess to executable.
2944         Added "-ltbb" to v3_target_compile flags.
2945
2946 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
2947
2948         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
2949         Add check for Thread Building Blocks 2018 or later.
2950
2951 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2952
2953         * testsuite/experimental/names.cc: Only include Networking TS headers
2954         on targets with the necessary Gthreads support.
2955
2956 2019-05-20  Marek Polacek  <polacek@redhat.com>
2957
2958         CWG 2094 - volatile scalars are trivially copyable.
2959         PR c++/85679
2960         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
2961         result for volatile int.
2962
2963 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2964
2965         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
2966         * testsuite/experimental/names.cc: Include <experimental/filesystem>
2967         conditionally.
2968
2969         PR c++/90532 Ensure __is_constructible(T[]) is false
2970         * include/std/type_traits (__do_is_default_constructible_impl)
2971         (__is_default_constructible_atom, __is_default_constructible_safe):
2972         Remove.
2973         (is_default_constructible): Use is_constructible.
2974         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
2975         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
2976         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
2977         * testsuite/20_util/is_trivially_default_constructible/value.cc:
2978         Likewise.
2979
2980 2019-05-20  Pádraig Brady  <pbrady@fb.com>
2981
2982         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
2983         to the deallocator with -fsized-deallocation.
2984
2985 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
2986
2987         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
2988         test by passing correct alignment to deallocate function.
2989
2990 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
2991
2992         PR libstdc++/90520
2993         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
2994         Raise exception if unique_ptr tuple member has unknown structure.
2995         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
2996         Adjust worker to support new __uniq_ptr_data base class. Do not
2997         assume field called _M_head_impl is the first tuple element.
2998
2999 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
3000
3001         * include/bits/stl_deque.h
3002         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
3003         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
3004         (_Deque_base::_Deque_impl_data): New.
3005         (_Deque_base::_Deque_impl): Inherit latter.
3006         (_Deque_base::_Deque_impl::_M_swap_data): Move...
3007         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
3008         (_Deque_base::_Deque_impl()): Add noexcept qualification.
3009         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
3010         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
3011         (deque<>::deque()): Default.
3012         (deque<>::deque(deque&&)): Default.
3013         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
3014         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
3015         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
3016         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
3017         _M_range_initialize.
3018         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
3019         (deque<>::resize(size_type, const value_type&)): Share a single
3020         implementation.
3021         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
3022         _M_range_insert_aux.
3023         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
3024         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
3025         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
3026         * testsuite/23_containers/deque/allocator/default_init.cc: New.
3027
3028 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
3029
3030         PR libstdc++/90246
3031         * include/std/variant (holds_alternative, get, get_if): Improve
3032         static assertion messages.
3033         (bad_variant_access::bad_variant_access()): Change default message.
3034         (__throw_bad_variant_access(bool)): New overload.
3035         (get): Use new overload.
3036         (visit, visit<R>): Improve exception message.
3037
3038         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
3039         targets. Add more cases from P0608R3.
3040         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
3041
3042         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
3043         * include/experimental/type_traits (is_detected_exact)
3044         (is_detected_exact_v): Likewise.
3045         * include/pstl/execution_defs.h (is_execution_policy)
3046         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
3047         * include/pstl/execution_impl.h (__policy_traits): Likewise.
3048         * testsuite/17_intro/names.cc: Check for more non-reserved names.
3049         * testsuite/experimental/names.cc: New test.
3050
3051         PR libstdc++/85965
3052         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
3053         assertions from the destructor.
3054         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
3055         Move static_assert for hash function to here.
3056         (_Hash_table_base::_M_equals): Move static_assert for equality
3057         predicate to here.
3058         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
3059         Remove.
3060         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
3061         the value directly instead of calling _S_value.
3062         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
3063         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
3064         _S_key(_Const_Link_type).
3065         * testsuite/23_containers/set/85965.cc: Check construction,
3066         destruction, assignment and size() do not trigger the assertions.
3067         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
3068         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
3069         expected errors.
3070         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3071         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
3072         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3073         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3074         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3075         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3076         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3077
3078         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
3079         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
3080         in C++11.
3081
3082         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
3083         P1165R1 entries.
3084         * doc/html/*: Regenerate.
3085         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
3086         of decay_t (P0777R1).
3087
3088 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
3089
3090         Move from state of allocators (LWG2593)
3091         * include/bits/stl_deque.h
3092         (_Deque_base(_Deque_base&&, false_type)): Remove.
3093         (_Deque_base(_Deque_base&&, true_type)): Remove.
3094         (_Deque_base(_Deque_base&&)): Adapt.
3095         (_Deque_base::_M_move_impl()): Remove.
3096         * testsuite/util/testsuite_allocator.h
3097         (propagating_allocator(propagating_allocator&&)): Preserve move from
3098         state.
3099         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
3100         Adapt.
3101         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
3102         Adapt.
3103         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
3104         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
3105         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
3106         Adapt.
3107         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
3108         Adapt.
3109         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
3110         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
3111         (test02): Adapt.
3112         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
3113         (test02): Adapt.
3114         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
3115         (test02): Adapt.
3116         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
3117         (test02): Adapt.
3118         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
3119         Adapt.
3120         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
3121         Adapt.
3122         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
3123         (test02): Adapt.
3124         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
3125         (test02): Adapt.
3126
3127 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
3128
3129         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
3130         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
3131
3132         * include/std/variant (__overload_set): Remove.
3133         (_Arr): New helper.
3134         (_Build_FUN): New class template to define a single FUN overload,
3135         with specializations to prevent unwanted conversions, as per P0608R3.
3136         (_Build_FUNs): New class template to build an overload set of FUN.
3137         (_FUN_type): New alias template to perform overload resolution.
3138         (__accepted_type): Use integer_constant base for failure case. Use
3139         _FUN_type for successful case.
3140         (variant::__accepted_index): Use _Tp instead of _Tp&&.
3141         (variant::variant(_Tp&&)): Likewise.
3142         (variant::operator=(_Tp&&)): Likewise.
3143
3144         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
3145         Replace raw visitation with a runtime check for the valueless state
3146         and a non-raw visitor.
3147         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
3148         (variant::index()): Remove branch.
3149         (variant::swap(variant&)): Use valueless_by_exception() instead of
3150         comparing the index to variant_npos, and add likelihood attribute.
3151
3152         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
3153         (_Hashtable_base::_Equal_hash_code): Define new class template.
3154         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
3155         _Equal_helper.
3156
3157         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
3158         Replace with _M_get non-static member function.
3159         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
3160         member function.
3161         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
3162         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
3163
3164         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
3165         _S_get accessors for members in EBO helpers.
3166         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
3167         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
3168         overloads.
3169         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
3170         helpers.
3171         (_Hashtable_base::_M_eq()): Remove non-const overload.
3172
3173 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
3174
3175         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
3176
3177 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3178
3179         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
3180         Fix return value.
3181
3182 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3183
3184         * config/os/solaris/solaris2.10: Move to ...
3185         * config/os/solaris: ... this.
3186         * configure.host (os_include_dir): Adapt.
3187         (abi_baseline_pair): Remove Solaris 10 handling.
3188         * config/abi/post/i386-solaris2.10: Remove.
3189         * config/abi/post/sparc-solaris2.10: Remove.
3190         * config/abi/post/i386-solaris2.11: Rename to ...
3191         * config/abi/post/i386-solaris: ... this.
3192         * config/abi/post/sparc-solaris2.11: Rename to ...
3193         * config/abi/post/sparc-solaris: ... this.
3194
3195         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
3196         workaround.
3197
3198         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
3199         xfail.
3200
3201 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3202
3203         * include/std/variant (__visit_with_index): Remove typedef.
3204         (__deduce_visit_result): New tag type.
3205         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
3206         visitation of possibly-valueless variants, forwarding to __do_visit
3207         with the relevant tag type.
3208         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
3209         and make lambda return void.
3210         (__variant_construct): Likewise.
3211         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
3212         __raw_idx_visit and make lambda return void.
3213         (_Multi_array::__untag_result): Add metafunction to check the function
3214         pointer type for a tag type that dictates the kind of visitation.
3215         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
3216         Use decltype(auto) instead of tagged function pointer type.
3217         (__gen_vtable_impl): Remove bool non-type parameter and unused
3218         _Variant_tuple parameter.
3219         (__gen_vtable_impl::__visit_invoke_impl): Remove.
3220         (__gen_vtable_impl::__do_visit_invoke): Remove.
3221         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
3222         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
3223         for the visit<R> case, rather than dispatching to separate functions.
3224         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
3225         lambda return void.
3226         (variant::swap): Likewise.
3227         (__do_visit): Replace two non-type template parameters with a single
3228         type parameter, so that the caller must specify the visitor's return
3229         type (or one of the tag types).
3230         (visit): Deduce a return type from the visitor and use the
3231         __deduce_visit_result tag to enforce that all overloads return the
3232         same type.
3233         (visit<R>): Call __do_visit<R> with explicit result type.
3234         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
3235         lambda return void.
3236
3237 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3238
3239         nonesuch is insufficiently useless (lwg2996)
3240         * include/std/type_traits (struct __nonesuch): Added private base
3241         class to make __nonesuch not an aggregate and removed deleted default
3242         constructor.
3243         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
3244         (operator=(const pair&)): Use __nonesuch instead of
3245         __nonesuch_no_braces.
3246         (operator=(pair&&)): Likewise
3247         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
3248         of __nonesuch_no_braces.
3249         (operator=(tuple&&)): Likewise
3250         * include/experimental/type_traits (struct nonesuch): Added private
3251         base class to make nonesuch not an aggregate and removed deleted
3252         default constructor.
3253         * testsuite/20_util/nonesuch/nonesuch.cc: New.
3254         * testsuite/experimental/type_traits/nonesuch.cc: New.
3255
3256 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3257
3258         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
3259         (_Function_handler): Remove partial specializations for void return
3260         types and pointers to member.
3261         (_Function_handler::_M_manager): Adapt to removal of
3262         _Simple_type_wrapper.
3263         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
3264         * include/std/functional (_Bind_result::__enable_if_void)
3265         (_Bind_result::__disable_if_void): Remove sfinae helpers.
3266         (_Bind_result::__call): Use __invoke_r and remove overloads for void
3267         return types.
3268         * include/std/future (__future_base::_Task_state::_M_run)
3269         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
3270         change return type of lambda expressions.
3271
3272         * include/bits/invoke.h (__invoke_r): Define new function implementing
3273         the INVOKE<R> pseudo-function.
3274         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
3275         * testsuite/20_util/function_objects/invoke/2.cc: New test.
3276
3277         * include/std/type_traits (__is_nt_convertible_helper): Define it
3278         unconditionally, not only for C++20.
3279         (__is_nothrow_convertible): Define internal trait for use in C++11.
3280         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
3281         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
3282         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
3283         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
3284         that has nothrow explicit conversion but potentially-throwing implicit
3285         conversion.
3286         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
3287         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
3288         function to only consider implicit conversions.
3289         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
3290
3291         * include/std/iterator: Include <iosfwd> instead of <istream> and
3292         <ostream>.
3293
3294         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
3295         Remove unused, non-standard function.
3296
3297         * include/bits/regex.h (match_results::max_size()): Adjust return
3298         value to account for prefix/suffix/unmatched subs.
3299         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
3300         reset the contained sub matches.
3301         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
3302         function to set result state following a failed match.
3303         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
3304         sub_match states after _M_resize. Use _M_establish_failed_match.
3305
3306         PR libstdc++/69724
3307         * include/std/thread (thread::_State_impl, thread::_S_make_state):
3308         Replace single _Callable parameter with variadic _Args pack, to
3309         forward them directly to the tuple of decayed copies.
3310         * testsuite/30_threads/thread/cons/69724.cc: New test.
3311
3312 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3313
3314         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
3315         * include/bits/basic_string.h: (operator=(const basic_string&):
3316         Move allocator decision to assign.
3317         (assign(const basic_string&)): Move allocator decision here.
3318         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
3319         Add tests.
3320         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
3321         Add tests.
3322
3323 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3324
3325         * testsuite/util/testsuite_allocator.h (memory_resource)
3326         (default_resource_mgr): Fix indentation.
3327
3328         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
3329         Use operator-> to access raw pointer member.
3330         * testsuite/23_containers/vector/59829.cc: Likewise.
3331         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
3332         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
3333         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
3334         for tests.
3335         (PointerBase, PointerBase_void): Derive from NullablePointer and use
3336         its constructors and equality operators. Change converting
3337         constructors to use operator-> to access private member of the other
3338         pointer type.
3339         (PointerBase_void::operator->()): Add, for access to private member.
3340         (operator-(PointerBase, PointerBase)): Change to hidden friend.
3341         (operator==(PointerBase, PointerBase)): Remove.
3342         (operator!=(PointerBase, PointerBase)): Remove.
3343
3344         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
3345         not assume field called _M_head_impl is the first tuple element.
3346         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
3347         implementation more accurate.
3348         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
3349         empty pointer type and non-empty deleter.
3350
3351         LWG 2899 - Make is_move_constructible correct for unique_ptr
3352         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
3353         move assignment operator.
3354         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
3355         (__uniq_ptr_data): New class template with conditionally deleted
3356         special members.
3357         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
3358         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
3359         constructor and move assignment operator as defaulted.
3360         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
3361         __uniq_ptr_impl::release().
3362         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
3363         to __uniq_ptr_impl::reset(pointer).
3364         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
3365         Check for new __uniq_ptr_data type.
3366         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
3367
3368 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3369
3370         PR libstdc++/90454.cc path construction from void*
3371         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
3372         pointers to void are rejected as well as void.
3373         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
3374         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
3375         pointers to void.
3376         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
3377
3378         * doc/xml/manual/policy_data_structures.xml: Comment out stray
3379         <remark> elements. Fix formatting of bibliography references.
3380
3381 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
3382
3383         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
3384
3385 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
3386
3387         Remove Profile Mode, deprecated since 7.1.0
3388         * doc/Makefile.am: Remove XML file for profile mode docs.
3389         * doc/Makefile.in: Regenerate.
3390         * doc/xml/authors.xml: Remove authors of profile mode docs.
3391         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
3392         mode.
3393         * doc/xml/manual/debug.xml: Likewise.
3394         * doc/xml/manual/evolution.xml: Document removal of profile mode.
3395         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
3396         * doc/xml/manual/spine.xml: Remove profile mode author credit.
3397         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
3398         directive.
3399         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
3400         macro.
3401         * doc/html/*: Regenerate.
3402         * include/Makefile.am: Remove profile mode headers.
3403         * include/Makefile.in: Regenerate.
3404         * include/bits/c++config (std::__profile): Remove namespace.
3405         [_GLIBCXX_PROFILE]: Remove checks for macro.
3406         * include/profile/array: Remove.
3407         * include/profile/base.h: Remove.
3408         * include/profile/bitset: Remove.
3409         * include/profile/deque: Remove.
3410         * include/profile/forward_list: Remove.
3411         * include/profile/impl/profiler.h: Remove.
3412         * include/profile/impl/profiler_algos.h: Remove.
3413         * include/profile/impl/profiler_container_size.h: Remove.
3414         * include/profile/impl/profiler_hash_func.h: Remove.
3415         * include/profile/impl/profiler_hashtable_size.h: Remove.
3416         * include/profile/impl/profiler_list_to_slist.h: Remove.
3417         * include/profile/impl/profiler_list_to_vector.h: Remove.
3418         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
3419         * include/profile/impl/profiler_node.h: Remove.
3420         * include/profile/impl/profiler_state.h: Remove.
3421         * include/profile/impl/profiler_trace.h: Remove.
3422         * include/profile/impl/profiler_vector_size.h: Remove.
3423         * include/profile/impl/profiler_vector_to_list.h: Remove.
3424         * include/profile/iterator_tracker.h: Remove.
3425         * include/profile/list: Remove.
3426         * include/profile/map: Remove.
3427         * include/profile/map.h: Remove.
3428         * include/profile/multimap.h: Remove.
3429         * include/profile/multiset.h: Remove.
3430         * include/profile/ordered_base.h: Remove.
3431         * include/profile/set: Remove.
3432         * include/profile/set.h: Remove.
3433         * include/profile/unordered_base.h: Remove.
3434         * include/profile/unordered_map: Remove.
3435         * include/profile/unordered_set: Remove.
3436         * include/profile/vector: Remove.
3437         * scripts/run_doxygen: Do not process profile mode headers.
3438         * testsuite/23_containers/array/element_access/60497.cc: Don't use
3439         profile mode type.
3440         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
3441         Remove dg-skip-if for profile mode.
3442         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
3443         preprocessor check for profile mode.
3444         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
3445         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
3446         for profile mode.
3447         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
3448         Likewise.
3449         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
3450         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
3451         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
3452         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
3453         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
3454         Likewise.
3455         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
3456         Likewise.
3457         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
3458         Likewise.
3459         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
3460         Likewise.
3461         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
3462         preprocessor check for profile mode.
3463         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
3464         Likewise.
3465         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
3466         Remove dg-skip-if for profile mode.
3467         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
3468         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
3469         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
3470         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
3471         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
3472         * testsuite/Makefile.am: Remove profile_flags variable and
3473         * testsuite/Makefile.am: Remove profile_flags variable and
3474         check-profile target.
3475         * testsuite/Makefile.in: Regenerate.
3476         * testsuite/ext/profile/all.cc: Remove.
3477         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
3478         * testsuite/ext/profile/profiler_algos.cc: Remove.
3479         * testsuite/ext/profile/replace_new.cc: Remove.
3480         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
3481         preprocessor check for profile mode.
3482         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
3483         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
3484         (check_v3_target_normal_mode): Do not check for profile mode macro.
3485         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
3486         profile mode.
3487         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
3488         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3489         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3490         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
3491         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
3492         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3493         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3494         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3495         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3496         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3497
3498         Remove array_allocator extension, deprecated since 4.9.0
3499         * doc/xml/manual/allocator.xml: Remove documentation for
3500         array_allocator.
3501         * doc/xml/manual/evolution.xml: Document array_allocator removal.
3502         * doc/xml/manual/using.xml: Remove header from documentation.
3503         * include/Makefile.am: Remove <ext/array_allocator.h> header.
3504         * include/Makefile.in: Regenerate.
3505         * include/ext/array_allocator.h: Remove.
3506         * include/precompiled/extc++.h: Do not include removed header.
3507         * testsuite/ext/array_allocator/1.cc: Remove.
3508         * testsuite/ext/array_allocator/2.cc: Remove.
3509         * testsuite/ext/array_allocator/26875.cc: Remove.
3510         * testsuite/ext/array_allocator/3.cc: Remove.
3511         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
3512         * testsuite/ext/array_allocator/check_delete.cc: Remove.
3513         * testsuite/ext/array_allocator/check_new.cc: Remove.
3514         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
3515         * testsuite/ext/headers.cc: Do not include removed header.
3516
3517 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
3518
3519         * include/bits/stl_bvector.h
3520         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3521         Make hidden friend.
3522         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3523         Likewise.
3524         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3525         Likewise.
3526         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3527         Likewise.
3528         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3529         Likewise.
3530         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3531         Likewise.
3532         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
3533         Likewise.
3534         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
3535         copy elision.
3536         (_Bit_iterator::operator-(difference_type)): Likewise.
3537         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
3538         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
3539         NRVO copy elision.
3540         (_Bit_const_iterator::operator-(difference_type)): Likewise.
3541         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
3542
3543 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
3544
3545         PR libstdc++/81266
3546         * testsuite/util/thread/all.h: Do not use remove_pointer for
3547         std::thread::native_handle_type.
3548
3549         PR libstdc++/90397
3550         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
3551         (_Variant_storage<true, Types...>::_M_reset()))
3552         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
3553         (__get_storage): Likewise.
3554         (variant): Add noexcept to friend declarations for __get and
3555         __get_storage.
3556
3557         PR libstdc++/90388
3558         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
3559         Use _Require for constraints.
3560         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
3561         per the standard.
3562         (__uniq_ptr_hash): New base class with conditionally-disabled call
3563         operator.
3564         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
3565         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
3566         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
3567
3568         * include/bits/shared_ptr.h: Improve docs.
3569         * include/bits/shared_ptr_base.h: Likewise.
3570         * include/bits/stl_uninitialized.h: Likewise.
3571         * include/bits/unique_ptr.h: Likewise.
3572         * libsupc++/new: Likewise.
3573
3574 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
3575
3576         * include/bits/stl_deque.h
3577         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3578         Make hidden friend.
3579         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3580         Likewise.
3581         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3582         Likewise.
3583         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3584         Likewise.
3585         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3586         Likewise.
3587         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
3588         Likewise.
3589         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
3590         copy elision.
3591         (_Deque_iterator<>::operator-(difference_type)): Likewise.
3592
3593 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
3594
3595         PR libstdc++/90277
3596         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
3597         (test01): Reserve for number of insertions to avoid rehash during test.
3598         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3599         (test01): Likewise.
3600         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
3601         (test01): Likewise.
3602         (test02): Likewise.
3603         (test03): Likewise.
3604
3605 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
3606
3607         * include/experimental/bits/fs_path.h: Improve docs.
3608         * include/experimental/bits/net.h: Fix wrong header name in comment.
3609         Do not document implementation details.
3610         * include/experimental/netfwd: Fix doxygen grouping.
3611
3612 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3613
3614         * include/bits/stl_pair.h: Improve docs.
3615         * include/std/tuple: Likewise.
3616
3617         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
3618         inline namespace.
3619         * include/std/chrono: Improve docs.
3620         * include/std/ratio: Do not document implementation details.
3621         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
3622         line numbers.
3623         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
3624
3625         PR libstdc++/89102
3626         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
3627         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
3628         (__duration_common_type): New helper.
3629         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
3630         __duration_common_type.
3631         (__timepoint_common_type_wrapper): Replace with ...
3632         (__timepoint_common_type): New helper.
3633         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
3634         Use __time_point_common_type.
3635         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
3636         (__common_type_impl): If either argument is transformed by decay,
3637         use the common_type of the decayed types.
3638         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
3639         decayed, use __do_common_type_impl to get the common_type.
3640         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
3641         (__do_member_type_wrapper, __member_type_wrapper)
3642         (__expanded_common_type_wrapper): Remove.
3643         (__common_type_pack, __common_type_fold): New helpers.
3644         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
3645         __member_type_wrapper and __expanded_common_type_wrapper.
3646         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
3647         Test zero-length template argument list.
3648         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
3649         Test single argument cases and argument types that should decay.
3650         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
3651         Adjust expected error.
3652         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
3653         dg-error lineno.
3654         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
3655         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
3656         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
3657
3658         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
3659
3660 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3661
3662         Make allocator propagation more consistent for
3663         operator+(basic_string) (P1165R1)
3664         * include/bits/basic_string.h
3665         (operator+(basic_string&&, basic_string&&): Changed resulting
3666         allocator to always be the one from the first parameter.
3667         * include/bits/basic_string.tcc
3668         (operator+(const _CharT*, const basic_string&)): Changed
3669         resulting allocator to be SOCCC on the second parameter's allocator.
3670         (operator+(_CharT, const basic_string&)): Likewise.
3671         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
3672         New.
3673         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
3674         New.
3675
3676 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
3677
3678         * include/bits/regex.h: Improve docs.
3679         * include/bits/regex.tcc: Do not document implementation details.
3680
3681         * testsuite/19_diagnostics/error_code/hash.cc: New test.
3682
3683 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
3684
3685         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
3686         Add type printer for container types in std::__debug namespace.
3687         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
3688         (gdb-tests): Use distinct parameters for the type of test and use of
3689         regex.
3690         (gdb-test): Check for regex test even if 'whatis' test.
3691         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
3692         mode.
3693         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
3694         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
3695         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
3696         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
3697         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
3698         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
3699         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
3700
3701 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
3702
3703         * include/std/system_error (error_category): Fix comment.
3704
3705         PR libstdc++/90299
3706         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
3707         argument is an empty path.
3708         (absolute(const path&, error_code&)): Use invalid_argument as error
3709         code instead of no_such_file_or_directory.
3710         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
3711         of non-existent paths and empty paths with both overloads of absolute.
3712
3713         * include/std/system_error (error_category, error_code)
3714         (error_condition): Improve docs.
3715         * libsupc++/exception: Add missing @addtogroup Doxygen command.
3716         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
3717         to class documentation. Suppress documentation for implementation
3718         details.
3719         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
3720         Suppress documentation for implementation details.
3721
3722         * include/std/system_error (error_code): Remove friend declaration
3723         for hash<error_code>.
3724         (hash<error_code>::operator()): Use public member functions to access
3725         value and category.
3726         (hash<error_condition>::operator()): Use address of category, not
3727         its object representation.
3728         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
3729         Use public member functions to access value and category.
3730         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
3731
3732 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
3733
3734         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
3735         * include/bits/hashtable_policy.h
3736         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
3737         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
3738         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
3739         smaller than input value rather than always greater. Preserve
3740         _M_next_resize if called with 0 input. Use __builtin_floorl.
3741         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
3742         elements + number of insertions is greater than _M_next_resize. Start
3743         with 11 buckets if not told otherwise. Use __builtin_floorl.
3744         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
3745         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
3746         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
3747         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
3748         told otherwise. Use __builtin_floorl.
3749         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
3750         to also validate _Power2_rehash_policy.
3751         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
3752         Adapt.
3753
3754 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
3755
3756         PR libstdc++/61761
3757         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
3758         std::copysign.
3759
3760         PR libstdc++/52119
3761         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
3762         overflow warning with -Wpedantic -Wsystem-headers.
3763
3764 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
3765
3766         PR libstdc++/90314
3767         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
3768         * include/bits/move.h (swap): Remove extra parentheses.
3769
3770         * include/experimental/bits/lfts_config.h: Improve doc markup.
3771         * include/experimental/optional: Improve docs.
3772         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
3773         (__constexpr_addressof): Remove.
3774         (optional::operator->()): Use std::__addressof().
3775         * include/std/optional (optional::operator->()): Adjust whitespace.
3776         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
3777         that operator-> is still constexpr with overloaded operator&. Change
3778         to compile-only test.
3779         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
3780         compile-only test.
3781
3782         * include/bits/shared_ptr.h: Improve docs.
3783         * include/bits/shared_ptr_atomic.h: Likewise.
3784         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
3785
3786         * include/bits/basic_string.h: Fix iterator/index confusion in
3787         Doxygen comments.
3788         * include/bits/range_access.h: Fix Doxygen warnings.
3789         * include/bits/refwrap.h: Do not document implementation details.
3790         (ref, cref): Group docs with reference_wrapper.
3791         * include/std/fstream: Fix Doxygen markup.
3792         * libsupc++/initializer_list (begin, end): Group docs with
3793         initializer_list.
3794
3795         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
3796
3797         * include/bits/unique_lock.h: Fix/improve doxygen markup.
3798         * include/std/mutex: Likewise.
3799         * include/std/shared_mutex: Likewise.
3800
3801         * include/bits/fs_dir.h: Fix/improve doxygen markup.
3802         * include/bits/fs_fwd.h: Likewise.
3803         * include/bits/fs_ops.h: Likewise.
3804         * include/bits/fs_path.h: Likewise.
3805         * include/std/filesystem: Likewise.
3806
3807         * include/experimental/bits/net.h: Fix/improve doxygen markup.
3808         * include/experimental/buffer: Likewise.
3809         * include/experimental/executor: Likewise.
3810         * include/experimental/internet: Likewise.
3811         * include/experimental/io_context: Likewise.
3812         * include/experimental/net: Likewise.
3813         * include/experimental/netfwd: Likewise.
3814         * include/experimental/socket: Likewise.
3815         * include/experimental/timer: Likewise.
3816
3817         * doc/doxygen/doxygroups.cc: Move description of experimental group
3818         here.
3819         * include/experimental/algorithm: Add to libfund-ts doc group.
3820         * include/experimental/any: Likewise. Do not document implementation
3821         details.
3822         * include/experimental/array: Add to libfund-ts doc group.
3823         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
3824         for Library Fundamentals.
3825         * include/experimental/chrono: Add to libfund-ts doc group.
3826         * include/experimental/deque: Likewise.
3827         * include/experimental/forward_list: Likewise.
3828         * include/experimental/functional: Likewise.
3829         * include/experimental/iterator: Likewise.
3830         * include/experimental/list: Likewise.
3831         * include/experimental/map: Likewise.
3832         * include/experimental/memory: Likewise.
3833         * include/experimental/memory_resource: Likewise. Improve docs.
3834         details.
3835         * include/experimental/numeric: Add to libfund-ts doc group.
3836         * include/experimental/optional: Likewise.
3837         * include/experimental/propagate_const: Likewise.
3838         * include/experimental/random: Likewise.
3839         * include/experimental/ratio: Likewise.
3840         * include/experimental/regex: Likewise.
3841         * include/experimental/set: Likewise.
3842         * include/experimental/source_location: Likewise.
3843         * include/experimental/string: Likewise.
3844         * include/experimental/string_view: Likewise.
3845         * include/experimental/system_error: Likewise.
3846         * include/experimental/tuple: Likewise.
3847         * include/experimental/type_traits: Likewise.
3848         * include/experimental/unordered_map: Likewise.
3849         * include/experimental/unordered_set: Likewise.
3850         * include/experimental/utility: Likewise.
3851         * include/experimental/vector: Likewise.
3852         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
3853         * testsuite/experimental/array/neg.cc: Adjust dg-error.
3854         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
3855         Likewise.
3856         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
3857         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
3858         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
3859         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
3860         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
3861
3862         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
3863         * include/experimental/bits/fs_fwd.h: Improve docs.
3864         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
3865         * include/experimental/bits/fs_path.h: Likewise.
3866         (path, filesystem_error, u8path): Improve docs.
3867         * include/experimental/filesystem: Link to docs for TS.
3868
3869         * config/allocator/new_allocator_base.h (__allocator_base): Add
3870         workaround for Doxygen bug #6945.
3871         * include/std/memory: Improve docs. Define group for pointer safety.
3872         * include/std/scoped_allocator: Improve docs. Use "undocumented"
3873         conditional to suppress documentation for implementation details.
3874
3875         * include/bits/specfun.h: Improve docs.
3876         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
3877         and namespaces.
3878
3879         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
3880         (std::experimental): Add docs.
3881         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
3882         namespace to nothing when generating docs.
3883         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
3884         * include/std/chrono (std::chrono): Likewise.
3885         * include/std/functional (std::placeholders): Likewise.
3886         * include/std/thread (std::this_thread): Likewise.
3887
3888         * include/parallel/settings.h: Fix Doxygen markup.
3889
3890         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
3891         anything unless PB_DS_CLASS_C_DEC is defined.
3892         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
3893         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
3894         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
3895         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
3896         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
3897         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
3898         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
3899         Likewise.
3900         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
3901         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
3902         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
3903         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
3904         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
3905         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
3906         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
3907         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
3908         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
3909         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
3910         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
3911         Likewise.
3912         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
3913         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
3914         Likewise.
3915         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
3916         Likewise.
3917
3918         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
3919         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
3920         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
3921         Doxygen expands.
3922
3923 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3924
3925         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
3926         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
3927         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
3928         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
3929         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
3930         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
3931         Likewise.
3932         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
3933         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
3934         Likewise.
3935
3936 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
3937
3938         PR libstdc++/61761
3939         * include/std/complex (__complex_proj): Return parameter unchanged.
3940         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
3941         floating-point types to take std::complex arguments.
3942         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
3943         floating-point types.
3944         * testsuite/26_numerics/complex/proj.cc: New test.
3945
3946 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3947
3948         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
3949         to _Lock_policyE[012].
3950         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3951
3952 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
3953
3954         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
3955         macros accidentally left in.
3956         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
3957         unnecessary -lstdc++fs option. Fix test for mingw.
3958         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
3959         Fix test for mingw.
3960
3961 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
3962
3963         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
3964
3965 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
3966
3967         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
3968
3969         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
3970         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
3971
3972         PR libstdc++/71312
3973         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
3974
3975         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
3976         attribute.
3977
3978         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
3979         class template and partial specialization.
3980
3981         PR libstdc++/87982
3982         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
3983         an integral type.
3984         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
3985         functions to convert a value to an integral type.
3986         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
3987         (fill_n): Convert _Size parameter to an integral type.
3988         * testsuite/25_algorithms/fill_n/87982.cc: New test.
3989         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
3990         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
3991         * testsuite/25_algorithms/generate_n/87982.cc: New test.
3992         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
3993         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
3994
3995 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3996
3997         Adding noexcept-specification on tuple constructors (LWG 2899)
3998         * libstdc++-v3/include/std/tuple:
3999         (tuple()): Add noexcept-specification.
4000         (tuple(const _Elements&...)): Likewise
4001         (tuple(_UElements&&...)): Likewise
4002         (tuple(const tuple<_UElements...>&)): Likewise
4003         (tuple(tuple<_UElements...>&&)): Likewise
4004         (tuple(const _T1&, const _T2&)): Likewise
4005         (tuple(_U1&&, _U2&&)): Likewise
4006         (tuple(const tuple<_U1, _U2>&): Likewise
4007         (tuple(tuple<_U1, _U2>&&): Likewise
4008         (tuple(const pair<_U1, _U2>&): Likewise
4009         (tuple(pair<_U1, _U2>&&): Likewise
4010         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
4011
4012 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
4013
4014         PR libstdc++/87106
4015         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
4016         arguments with __restrict.
4017
4018 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
4019
4020         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
4021
4022 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
4023
4024         * include/experimental/bits/fs_path.h
4025         (path::_S_convert_loc<_InputIterator>): Create const std::string to
4026         avoid redundant call to _S_convert_loc with non-const pointers.
4027
4028         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
4029         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
4030         * testsuite/21_strings/basic_string/hash/hash.cc
4031         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
4032         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
4033         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
4034
4035         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
4036         wstring::_M_replace_dispatch with more specific patterns.
4037         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
4038         Create const std::string to avoid redundant call to _S_convert_loc
4039         with non-const pointers.
4040         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
4041         avoid unnecessary basic_string::assign instantiations.
4042
4043         * include/std/memory (__uses_alloc_args): Add string-literal to
4044         static_assert, to match the one in __uses_alloc.
4045         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
4046         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
4047         for recursive uses-allocator construction of nested pairs.
4048         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
4049         comment.
4050
4051 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
4052
4053         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
4054         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
4055         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
4056         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
4057
4058         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
4059         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
4060         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
4061         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
4062         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
4063         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
4064         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
4065
4066 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
4067
4068         PR libstdc++/90239
4069         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
4070         * include/std/scoped_allocator [__cplusplus > 201703L]
4071         (scoped_allocator_adaptor::construct): Define in terms of
4072         uses_allocator_construction_args, as per P0591R4.
4073         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
4074         * testsuite/util/testsuite_allocator.h: Remove name of unused
4075         parameter.
4076
4077 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
4078
4079         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
4080         * doc/html/*: Regenerate.
4081
4082         * include/bits/fs_path.h (operator<, operator<=, operator>)
4083         (operator>=, operator==, operator!=): Make hidden friends, as per
4084         LWG 3065.
4085         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
4086         string type in test.
4087         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
4088
4089         * include/std/any (any::any(ValueType&&)): Use __and_v.
4090         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
4091         Likewise.
4092
4093         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
4094         as per P0777R1.
4095         * include/std/type_traits (__result_of_memfun): Use remove_reference
4096         instead of __remove_cvref_t and remove redundant is_same check.
4097         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
4098
4099         * include/experimental/string_view (basic_string_view::pointer)
4100         (basic_string_view::reference): Fix to refer to non-const value_type.
4101         * include/bits/basic_string.h (basic_string): Use __sv_check and
4102         __sv_limit instead of basic_string_view::_M_check and
4103         basic_string_view::_M_limit.
4104         * include/std/string_view (__sv_check, __sv_limit): New
4105         helper functions to replace basic_string_view::_M_check and
4106         basic_string_view::_M_limit.
4107         (basic_string_view): Add static assertions to enforce ill-formed
4108         requirement for traits_type::char_type from P1148R0, and to enforce
4109         required properties of char-like types.
4110         (basic_string_view::pointer, basic_string_view::reference): Fix to
4111         refer to non-const value_type.
4112         (basic_string_view::operator[], basic_string_view::at)
4113         (basic_string_view::front, basic_string_view::back)
4114         (basic_string_view::data): Use const_reference and const_pointer
4115         typedefs for return types.
4116         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
4117         (hash<wstring_view>): Fix argument_type typedef.
4118         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4119         char/1.cc: Fix expected return type of basic_string_view::data().
4120         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4121         wchar_t/1.cc: Likewise.
4122         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4123         char/1.cc: Likewise.
4124         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4125         wchar_t/1.cc: Likewise.
4126         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
4127         New test.
4128         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
4129         Check reference and pointer typedefs.
4130         * testsuite/experimental/string_view/requirements/typedefs.cc:
4131         Likewise.
4132         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
4133         Fix expected return type of basic_string_view::data().
4134         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
4135         1.cc: Likewise.
4136         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
4137         Likewise.
4138         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
4139         1.cc: Likewise.
4140
4141         PR libstdc++/90220
4142         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
4143         Avoid a runtime check for types that can never be stored in std::any.
4144         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4145         array types.
4146
4147         PR libstdc++/90220 (partial)
4148         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
4149         not attempt ill-formed static_cast to pointers to non-object types.
4150         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4151         function types.
4152
4153         * testsuite/20_util/variant/run.cc: Catch exception by reference to
4154         prevent -Wcatch-value warning.
4155
4156         * include/std/variant (__variant_construct): Use template parameter
4157         type instead of equivalent decltype-specifier.
4158         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
4159         Replace forward with move.
4160         (_Move_ctor_base<false, Types...>::_M_destructive_move)
4161         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
4162         (_Move_ctor_base<true, Types...>::_M_destructive_move)
4163         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
4164         index after construction succeeds.
4165         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
4166         if-constexpr checks that are always true. Use __remove_cvref_t instead
4167         of remove_reference so that is_nothrow_move_constructible check
4168         doesn't use a const rvalue parameter. In the potentially-throwing case
4169         construct a temporary and move assign it, as per LWG 2904.
4170         (_Move_assign_base<false, Types...>::operator=): Remove redundant
4171         if-constexpr checks that are always true. Use emplace as per LWG 2904.
4172         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
4173         construct a temporary and move assign from it, as per LWG 2904.
4174         * testsuite/20_util/variant/exception_safety.cc: Check that
4175         assignment operators have strong exception safety guarantee.
4176
4177 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
4178
4179         Document PSTL linker flags
4180
4181         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
4182
4183 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4184
4185         * include/std/variant (__detail::__variant::_Traits): Make
4186         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
4187         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
4188         P0602R4.
4189         (__detail::__variant::_Copy_assign_alias): Only depend on
4190         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
4191         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
4192         move assignment operators.
4193
4194         PR libstdc++/90165
4195         * include/std/variant (variant::__not_self): New helper for the
4196         is_same_v<remove_cvref_t<T>, variant>==false constraints.
4197         (variant::__to_type_impl): Remove.
4198         (variant::__to_type): Add default argument to check pack size, instead
4199         of using __to_type_impl.
4200         (variant::__accepted_type): Add default argument using __not_self.
4201         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
4202         for variant(T&&) constructor constraint.
4203         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
4204         Extract __accepted_type into a named template parameter for reuse in
4205         other constraints and in the exception specification.
4206         (variant::variant(in_place_type_t<T>, Args&&...))
4207         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
4208         (variant::variant(in_place_index_t<T>, Args&&...))
4209         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
4210         (variant::operator=T&&)): Remove redundant && from trait arguments.
4211         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
4212         isn't used for in_place_type or in_place_index arguments.
4213
4214         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
4215         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
4216         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
4217
4218 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
4219             Bernd Edlinger  <bernd.edlinger@hotmail.de>
4220             Jakub Jelinek  <jakub@redhat.com>
4221
4222         PR target/89093
4223         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
4224         general-regs-only target attribute for ARM.
4225
4226 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4227
4228         PR libstdc++/87431
4229         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
4230         specialization also depend on is_nothrow_move_constructible.
4231         * include/std/variant (__detail::__variant::__never_valueless()):
4232         Only true if the variant would have a move assignment operator.
4233         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
4234         Check __never_valueless<T...>().
4235         (variant::emplace): Only perform non-throwing move assignments
4236         for never-valueless alternatives if the variant has a move assignment
4237         operator.
4238         * testsuite/20_util/variant/compile.cc: Check that never-valueless
4239         types can be emplaced into non-assignable variants.
4240         * testsuite/20_util/variant/run.cc: Check that never-valueless types
4241         don't get copied when emplaced into non-assignable variants.
4242
4243         * include/std/variant (__detail::__variant::__ref_cast): Remove
4244         unused function.
4245         (__detail::__variant::_Uninitialized::_M_get)
4246         (__detail::__variant::__get)
4247         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
4248
4249 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
4250
4251         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
4252         to Darwin10.
4253         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
4254         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
4255         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
4256         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
4257
4258 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4259
4260         Delegate PSTL configuration to pstl/pstl_config.h
4261
4262         * include/bits/c++config: Remove explicit PSTL configuration
4263         macros and use definitions from <pstl/pstl_config.h>.
4264
4265 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
4266
4267         Cleanup algorithm implementations
4268         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
4269         execution policy.
4270         (mismatch): Forward execution policy.
4271         (equal): Qualify call to std::equal().
4272         (partial_sort): Forward execution policy.
4273         (inplace_merge): Forward execution policy.
4274
4275 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
4276
4277         Improve implementation of parallel equal()
4278         * include/pstl/algorithm_impl.h
4279         (__internal::__brick_equal): use "4 iterator" version of
4280         std::equal().
4281         (__internal::__brick_equal): use simd for random access
4282         iterators on unsequenced execution policies.
4283         (__internal::__pattern_equal): add "4 iterator" version
4284         (__internal::__pattern_equal): dispatch to simd __brick_equal
4285         for vector-only execution policies.
4286         (__internal::__pattern_equal): dispatch to __parallel_or for
4287         parallel execution policies.
4288         * include/pstl/glue_algorithm_impl.h
4289         (std::equal): dispatch to "4 iterator" version of
4290         __internal::__pattern_equal().
4291
4292 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
4293
4294         PR libstdc++/90105
4295         * include/bits/forward_list.h (operator==): Do not use operator!= to
4296         compare elements.
4297         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
4298         earlier in the list, so that sort is stable.
4299         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
4300         * testsuite/23_containers/forward_list/comparable.cc: Test with
4301         types that meet the minimum EqualityComparable and LessThanComparable
4302         requirements. Remove irrelevant comment.
4303
4304         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
4305         Do not depend on whether all alternative types are move constructible.
4306         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
4307         from the operand when deciding whether to perform the assignment.
4308         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
4309         with deleted move constructor and deleted move assignment operator.
4310         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
4311         behaviour of variants with DeletedMoves as an alternative.
4312         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
4313         (move_ctor, move_assign): Check that moving a variant with a
4314         DeletedMoves alternative falls back to copying instead of moving.
4315
4316         * testsuite/20_util/variant/compile.cc: Remove empty string literals
4317         from static_assert declarations.
4318
4319         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
4320         actually match its name.
4321         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
4322         (test_swap()): Fix result for MoveCtorOnly and check
4323         MoveCtorAndSwapOnly.
4324
4325         * include/std/optional (optional::value_or(U&&) &&): Add missing
4326         constexpr specifier.
4327         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
4328         for disengaged optionals and rvalue optionals.
4329         * testsuite/20_util/optional/observers/4.cc: Likewise.
4330
4331 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
4332
4333         * include/pstl/algorithm_impl.h: Uglify identfiers.
4334         * include/pstl/numeric_impl.h:  Uglify identfiers.
4335         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
4336
4337 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
4338
4339         * include/bits/c++config:
4340         Add definition for __PSTL_ASSERT.
4341         Add definition for __PSTL_ASSERT_MSG.
4342         * include/pstl/algorithm_impl.h: Replace use of assert().
4343         * include/pstl/numeric_impl.h: Replace use of assert().
4344         * include/pstl/parallel_backend_tbb.h:
4345         Replace use of assert().
4346         Replace use of __TBB_ASSERT().
4347         * include/pstl/parallel_backend_utils.h: Replace use of assert().
4348
4349 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
4350
4351         PR libstdc++/90046
4352         * src/c++17/memory_resource.cc
4353         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
4354         needed to allow placing a _Chunk at the end of the buffer.
4355         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
4356
4357 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
4358
4359         * doc/xml/faq.xml: Add information about emergency EH pool.
4360         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
4361         Move outdated information on mt_allocator to a separate section.
4362         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
4363         doesn't affect the default allocator.
4364
4365         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
4366         typo.
4367
4368         PR libstdc++/89851
4369         * testsuite/20_util/variant/89851.cc: New test.
4370
4371 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
4372
4373         * include/std/variant: Adjust whitespace. Add comments.
4374         (_Multi_array): Leave primary template undefined.
4375         (_Multi_array<_Tp>): Define partial specialization for base case of
4376         recursion.
4377         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
4378         which is always a reference.
4379         (__gen_vtable::_S_apply()): Remove function, inline body into
4380         default member initializer.
4381         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
4382
4383         * include/std/variant (__variant_idx_cookie): Add member type.
4384         (__visitor_result_type): Remove.
4385         (__do_visit): Use invoke_result instead of __visitor_result_type.
4386         * testsuite/20_util/variant/visit.cc: New test.
4387
4388         PR libstdc++/90008
4389         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
4390         unused capture.
4391         * testsuite/20_util/variant/90008.cc: New test.
4392
4393 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
4394
4395         * include/pstl/algorithm_impl.h: Add namespace qualification.
4396         * include/pstl/execution_defs.h: Add namespace qualification.
4397         * include/pstl/execution_impl.h: Add namespace qualification.
4398         * include/pstl/numeric_impl.h: Add namespace qualification.
4399         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
4400         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
4401         * include/pstl/parallel_backend_utils.h: Include <cassert>.
4402
4403 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
4404
4405         Fix visit<R> for variant.
4406         * include/std/variant (__do_visit): Add a template parameter
4407         for enforcing same return types for visit.
4408         (__gen_vtable_impl): Likewise.
4409         (_S_apply_single_alt): Adjust.
4410         (__visit_invoke_impl): New. Handle casting to void.
4411         (__do_visit_invoke): New. Enforces same return types.
4412         (__do_visit_invoke_r): New. Converts return types.
4413         (__visit_invoke): Adjust.
4414         (__gen_vtable):  Add a template parameter for enforcing
4415         same return types for visit.
4416         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
4417         different return types.
4418         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
4419         visitors with different return types don't accidentally
4420         compile with regular visitation.
4421
4422 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
4423
4424         * testsuite/27_io/filesystem/iterators/caching.cc: Add
4425         dg-require-filesystem-ts.
4426
4427 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
4428
4429         * doc/xml/manual/status_cxx2020.xml: Update status.
4430         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
4431         * testsuite/20_util/variant/visit_r.cc: New test.
4432
4433         * include/bits/fs_dir.h (directory_iterator::operator*)
4434         (directory_iterator::operator->): Add noexcept.
4435         (operator==, operator!=): Replace namespace-scope equality operators
4436         for directory iterators with hidden friends.
4437
4438         PR libstdc++/89986
4439         * config/abi/pre/gnu.ver: Add missing exports.
4440         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
4441         increment member.
4442
4443         * config/abi/pre/gnu.ver: Export new symbols.
4444         * include/bits/fs_dir.h (recursive_directory_iterator::options())
4445         (recursive_directory_iterator::recursion_pending())
4446         (recursive_directory_iterator::disable_recursion_pending()): Remove
4447         inline definitions. Make noexcept.
4448         (recursive_directory_iterator::depth())
4449         (recursive_directory_iterator::operator*())
4450         (recursive_directory_iterator::operator->()): Make noexcept.
4451         (recursive_directory_iterator::_M_options)
4452         (recursive_directory_iterator::_M_pending): Remove data members.
4453         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
4454         (recursive_directory_iterator::recursive_directory_iterator): Remove
4455         ctor-initializer. Use new constructor for _Dir_stack.
4456         (recursive_directory_iterator::options())
4457         (recursive_directory_iterator::recursion_pending())
4458         (recursive_directory_iterator::disable_recursion_pending()): Add
4459         non-inline definitions.
4460         (recursive_directory_iterator::depth()): Make noexcept.
4461         (recursive_directory_iterator::increment(error_code&))
4462         (recursive_directory_iterator::pop(error_code&)): Adjust to new
4463         location of options and recursion_pending members.
4464         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
4465         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
4466         user-declared move constructor and assignment operator, to make the
4467         type move-only.
4468
4469         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
4470         d_type == DT_UNKNOWN immediately.
4471         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
4472         handling here.
4473         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
4474
4475         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
4476         assignment.
4477         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
4478         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
4479         assignment.
4480
4481         PR libstdc++/87431 (again)
4482         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
4483         Define partial specialization for basic_string.
4484         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
4485         shared_ptr and weak_ptr.
4486         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
4487         function.
4488         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
4489         vector.
4490         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
4491         unique_ptr.
4492         * include/debug/vector (_Never_valueless_alt): Likewise for debug
4493         vector.
4494         * include/std/any (_Never_valueless_alt): Define explicit
4495         specialization for any.
4496         * include/std/variant (_Never_valueless_alt): Define primary template.
4497         (__never_valueless): Use _Never_valueless_alt instead of
4498         is_trivially_copyable.
4499         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
4500         initializations to avoid try-catch overhead. Add special case for
4501         scalars produced by potentially-throwing conversions. Use
4502         _Never_valueless_alt instead of is_trivially_copyable for the
4503         remaining strong exception-safety cases.
4504         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
4505         * testsuite/20_util/variant/87431.cc: Run both test functions.
4506         * testsuite/20_util/variant/exception_safety.cc: New test.
4507         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
4508         so the variant becomes valueless.
4509
4510 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
4511
4512         PR libstdc++/85184
4513         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
4514         Remove assertions.
4515         (variant::emplace<_Tp>): Return result of emplace<N> directly.
4516
4517         * include/std/string (__hash_string_base): New class template defining
4518         operator() for hashing strings.
4519         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
4520         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
4521         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
4522         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
4523
4524 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
4525
4526         Use single-visitation in variant assignment and swap and relops.
4527         Also use indices instead of types when checking whether
4528         variants hold the same thing.
4529         * include/std/variant (__do_visit): Add a template parameter
4530         for index visitation, invoke with indices if index visitation
4531         is used.
4532         (__variant_idx_cookie): New.
4533         (__visit_with_index): Likewise.
4534         (_Copy_assign_base::operator=): Do single-visitation with
4535         an index visitor.
4536         (_Move_assign_base::operator=): Likewise.
4537         (_Extra_visit_slot_needed): Adjust.
4538         (__visit_invoke): Call with indices if it's an index visitor.
4539         (relops): Do single-visitation with an index visitor.
4540         (swap): Likewise.
4541         (__visitor_result_type): New.
4542
4543 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
4544
4545         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
4546
4547 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
4548
4549         Don't revisit a variant we are already visiting.
4550         * include/std/variant (__variant_construct_single): New.
4551         (__variant_construct): Use it.
4552         (_M_destructive_move): Likewise.
4553         (_M_destructive_copy): Likewise.
4554         (_Copy_assign_base::operator=): Adjust.
4555         (_Move_assign_base::operator=): Likewise.
4556         (swap): Likewise.
4557
4558 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
4559
4560         PR libstdc++/85965
4561         * include/bits/hashtable.h (_Hashtable): Move static assertions to
4562         destructor so they are not evaluated until the _Key type is complete.
4563         * include/bits/stl_tree.h (_Rb_tree): Likewise.
4564         * testsuite/23_containers/set/85965.cc: New test.
4565         * testsuite/23_containers/unordered_set/85965.cc: New test.
4566         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
4567         with regexp matching the corresponding _Rb_tree specialization.
4568         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
4569         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
4570         * testsuite/23_containers/set/48101_neg.cc: Likewise.
4571         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
4572         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
4573         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
4574         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
4575
4576 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4577
4578         PR libstdc++/89825
4579         Fix based on a suggestion by Antony Polukhin.
4580         * include/std/variant (__never_valueless): New.
4581         (_M_valid): Use it.
4582         (_Extra_visit_slot_needed): New.
4583         (_Multi_array): Use it.
4584         (_S_apply_all_alts): Likewise.
4585
4586 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4587
4588         PR libstdc++/89824
4589         Fix based on a suggestion by Antony Polukhin.
4590         * include/std/variant (__gen_vtable): Don't reserve an
4591         additional table slot, _Multi_array already does that.
4592
4593 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
4594
4595         PR libstdc++/89816
4596         Fix based on a suggestion by Antony Polukhin.
4597         * include/std/variant (__variant_construct): Capture a pointer
4598         to the storage and visit just one variant.
4599
4600 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
4601
4602         * doc/xml/manual/backwards_compatibility.xml: Remove link to
4603         Doxygen-generated pages with unstable URL.
4604         * doc/xml/manual/concurrency_extensions.xml: Likewise.
4605         * doc/xml/manual/extensions.xml: Likewise.
4606         * doc/xml/manual/parallel_mode.xml: Likewise.
4607         * doc/xml/manual/support.xml: Likewise.
4608
4609         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
4610         avoid -Wconversion warnings.
4611
4612 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
4613
4614         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
4615         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
4616         (allstamped): Add stamp-pstl.
4617         (install-headers): Add ptsl_builddir.
4618         * include/Makefile.in: Regenerate.
4619         * include/bits/c++config: Add pstl configuration.
4620         * include/pstl/LICENSE.txt: New file.
4621         * include/pstl/algorithm_fwd.h: New file.
4622         * include/pstl/algorithm_impl.h: New file.
4623         * include/pstl/execution_defs.h: New file.
4624         * include/pstl/execution_impl.h: New file.
4625         * include/pstl/glue_algorithm_defs.h: New file.
4626         * include/pstl/glue_algorithm_impl.h: New file.
4627         * include/pstl/glue_execution_defs.h: New file.
4628         * include/pstl/glue_memory_defs.h: New file.
4629         * include/pstl/glue_memory_impl.h: New file.
4630         * include/pstl/glue_numeric_defs.h: New file.
4631         * include/pstl/glue_numeric_impl.h: New file.
4632         * include/pstl/memory_impl.h: New file.
4633         * include/pstl/numeric_fwd.h: New file.
4634         * include/pstl/numeric_impl.h: New file.
4635         * include/pstl/parallel_backend.h: New file.
4636         * include/pstl/parallel_backend_tbb.h: New file.
4637         * include/pstl/parallel_backend_utils.h: New file.
4638         * include/pstl/parallel_impl.h: New file.
4639         * include/pstl/pstl_config.h: New file.
4640         * include/pstl/unseq_backend_simd.h: New file.
4641         * include/pstl/utils.h: New file.
4642         * include/std/algorithm: Include parallel algorithm implementations.
4643         * include/std/execution: New file.
4644         * include/std/memory: Include parallel algorithm implementations.
4645         * include/std/numeric: Include parallel algorithm implementations.
4646         * include/std/version: Add parallel algorithms feature test macro.
4647         * testsuite/util/pstl/pstl_test_config.h: New file.
4648         * testsuite/util/pstl/test_utils.h: New file.
4649         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4650         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4651         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4652         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4653         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4654         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4655         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4656         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4657         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4658         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4659         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4660         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4661         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4662         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4663         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4664         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4665         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4666         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4667         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4668         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4669         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4670         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4671         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4672         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4673         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4674         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4675         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4676         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4677         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4678         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4679         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4680         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4681         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4682         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4683         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4684         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4685         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4686         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4687         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4688         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4689         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4690         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4691         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4692         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4693         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4694         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4695         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4696         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4697         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4698         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4699         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4700         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4701         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4702         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
4703         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
4704         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
4705         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
4706         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
4707         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
4708         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
4709         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
4710         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
4711         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
4712         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
4713         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
4714         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
4715         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
4716         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
4717         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
4718         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
4719         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
4720         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
4721         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
4722         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
4723         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
4724         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
4725         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
4726         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
4727         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
4728         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
4729         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
4730         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
4731         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
4732         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
4733         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
4734         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
4735         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
4736         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
4737         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
4738         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
4739         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
4740         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
4741         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
4742         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
4743         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
4744         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
4745         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
4746         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
4747         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
4748         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
4749         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
4750         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
4751         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
4752         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
4753         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
4754         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
4755
4756 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
4757
4758         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
4759         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
4760         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
4761         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
4762         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
4763         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
4764         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
4765         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
4766         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
4767         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
4768         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
4769         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
4770         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
4771         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
4772         when the special functions IS is enabled, not for C++17.
4773         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
4774         Replace with ...
4775         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
4776         without checks for special functions in C++17.
4777         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
4778         New test.
4779
4780         PR libstdc++/88066
4781         * include/backward/hash_map: Use <> for includes not "".
4782         * include/backward/hash_set: Likewise.
4783         * include/backward/strstream: Likewise.
4784         * include/tr1/bessel_function.tcc: Likewise.
4785         * include/tr1/exp_integral.tcc: Likewise.
4786         * include/tr1/legendre_function.tcc: Likewise.
4787         * include/tr1/modified_bessel_func.tcc: Likewise.
4788         * include/tr1/riemann_zeta.tcc: Likewise.
4789
4790 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
4791
4792         * doc/xml/manual/allocator.xml: Link to table documenting evolution
4793         of extension allocators.
4794         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
4795         Document new headers in 7.2, 8.1 and 9.1 releases.
4796         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
4797         * doc/html/*: Regenerate.
4798
4799 2019-03-12  John David Anglin  <dave.anglin@bell.net>
4800
4801         PR libstdc++/89461
4802         * testsuite/lib/libstdc++.exp: Locate libatomic.
4803         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
4804         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
4805         libatomic options.
4806         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
4807         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
4808         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
4809         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
4810
4811 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
4812
4813         PR libstdc++/89460
4814         * configure.ac: Check for sockatmark.
4815         * crossconfig.m4: Check for sockatmark.
4816         * config.h.in: Regenerate.
4817         * configure: Regenerate.
4818         * include/experimental/internet (address_v4::_S_hton): Rename
4819         overloaded functions to _S_hton_16 and _S_ntoh_16.
4820         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
4821         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
4822         * include/experimental/socket (basic_socket::at_mark): Check
4823         _GLIBCXX_HAVE_SOCKATMARK.
4824
4825         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
4826         const variables instead of macros.
4827
4828         PR libstdc++/89629
4829         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
4830         Use correct type for len_aligned.
4831         * testsuite/20_util/hash/89629.cc: New test.
4832
4833 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
4834
4835         PR libstdc++/89641
4836         * include/std/atomic (atomic<T>::store, atomic<T>::load,
4837         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
4838         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
4839         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
4840         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
4841         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
4842         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
4843         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
4844         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
4845         memory_order_seq_cst to int.
4846
4847 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
4848
4849         * doc/xml/manual/using.xml: Use link element instead of xref.
4850         * doc/html/*: Regenerate.
4851
4852         * include/bits/fs_path.h (path::format): Add fixed underlying type.
4853
4854 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
4855
4856         PR libstdc++/89477
4857         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
4858         parameters in deduction guides.
4859         * include/debug/multimap.h (multimap): Likewise.
4860         * include/debug/set.h (multimap): Likewise.
4861         * include/debug/multiset.h (multimap): Likewise.
4862         * include/debug/unordered_map (unordered_map): Likewise.
4863         (unordered_multimap): Likewise.
4864         * include/debug/unordered_set (unordered_set): Likewise.
4865         (unordered_multiset): Likewise.
4866
4867         PR libstdc++/89608
4868         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
4869         Invalidate all iterators in case of rehash.
4870         (unordered_multimap<>::_M_check_rehashed): Likewise.
4871         * include/debug/unordered_set
4872         (unordered_set<>::_M_check_rehashed): Likewise.
4873         (unordered_multiset<>::_M_check_rehashed): Likewise.
4874         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
4875
4876 2019-03-07  Andreas Schwab  <schwab@suse.de>
4877
4878         * config/abi/post/riscv64-linux-gnu: New directory.
4879         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
4880
4881 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
4882
4883         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
4884         compile test to run. Fix typo.
4885
4886         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
4887         * doc/html/*: Regenerate.
4888
4889         P0356R5 Simplified partial function application
4890         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
4891         helpers for bind_front.
4892         (bind_front, __cpp_lib_bind_front): Define.
4893         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
4894
4895 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4896
4897         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
4898         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
4899         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
4900         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
4901
4902 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
4903
4904         PR libstdc++/86655 - std::assoc_legendre should not constrain
4905         the value of m (or x).
4906         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
4907         __sph_legendre): If degree > order Don't throw, return 0.
4908         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
4909         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
4910         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
4911         * testsuite/tr1/5_numerical_facilities/special_functions/
4912         02_assoc_legendre/pr86655.cc: New test.
4913         * testsuite/tr1/5_numerical_facilities/special_functions/
4914         22_sph_legendre/pr86655.cc: New test.
4915
4916 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
4917
4918         Rewrite variant.
4919         Also PR libstdc++/85517
4920         * include/std/variant (__do_visit): New.
4921         (__variant_cast): Likewise.
4922         (__variant_cookie): Likewise.
4923         (__erased_*): Remove.
4924         (_Variant_storage::_S_vtable): Likewise.
4925         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
4926         (_Variant_storage::__M_reset): Adjust.
4927         (__variant_construct): New.
4928         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
4929         __variant_construct.
4930         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
4931         (_Move_ctor_base::__M_destructive_copy): New.
4932         (_Move_ctor_base::__M_destructive_move): Adjust to use
4933         __variant_construct.
4934         (_Copy_assign_base::operator=): Adjust to use __do_visit.
4935         (_Copy_assign_alias): Adjust to check both copy assignment
4936         and copy construction for triviality.
4937         (_Move_assign_base::operator=): Adjust to use __do_visit.
4938         (_Multi_array): Add support for visitors that accept and return
4939         a __variant_cookie.
4940         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
4941         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
4942         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
4943         a __variant_cookie temporary for a variant that is valueless and..
4944         (__gen_vtable_impl::__visit_invoke): ..adjust here.
4945         (__gen_vtable::_Array_type): Conditionally make space for
4946         the __variant_cookie visitor case.
4947         (__variant_construct_by_index): New.
4948         (get_if): Adjust to use std::addressof.
4949         (relops): Adjust to use __do_visit.
4950         (variant): Add __variant_cast and __variant_construct_by_index
4951         as friends.
4952         (variant::emplace): Use _M_reset() and __variant_construct_by_index
4953         instead of self-destruction.
4954         (variant::swap): Adjust to use __do_visit.
4955         (visit): Reimplement in terms of __do_visit.
4956         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
4957         * testsuite/20_util/variant/compile.cc: Adjust.
4958         * testsuite/20_util/variant/run.cc: Likewise.
4959
4960 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
4961
4962         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
4963         constant.
4964         * testsuite/experimental/feat-char8_t.cc: Likewise.
4965
4966          * include/std/type_traits [C++20] (is_bounded_array)
4967          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
4968          Define.
4969          * testsuite/20_util/is_bounded_array/requirements/
4970          explicit_instantiation.cc: New test.
4971          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
4972          test.
4973          * testsuite/20_util/is_bounded_array/value.cc: New test.
4974          * testsuite/20_util/is_unbounded_array/requirements/
4975          explicit_instantiation.cc: New test.
4976          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
4977          * test.
4978          * testsuite/20_util/is_unbounded_array/value.cc: New test.
4979
4980         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
4981         Add constexpr.
4982         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
4983
4984 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
4985
4986         * include/c_compatibility/math.h [C++20] (lerp): Add using
4987         declaration.
4988         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
4989         (__lerp): Define function template to implement lerp.
4990         (lerp(float, float, float), lerp(double, double, double))
4991         (lerp(long double, long double, long double)): Define for C++20.
4992         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
4993         (midpoint(T, T), midpoint(T*, T*)): Define.
4994         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
4995         * testsuite/26_numerics/lerp.cc: New test.
4996         * testsuite/26_numerics/midpoint/floating.cc: New test.
4997         * testsuite/26_numerics/midpoint/integral.cc: New test.
4998         * testsuite/26_numerics/midpoint/pointer.cc: New test.
4999
5000 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
5001
5002         PR libstdc++/88996 Implement P0439R0
5003         Make std::memory_order a scoped enumeration.
5004         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
5005         add variables for the old enumerators.  Adjust calls.
5006         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
5007         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
5008
5009 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
5010
5011         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
5012         directive.
5013
5014         * include/std/memory_resource (polymorphic_allocator): Add default
5015         template argument for C++20.
5016         (polymorphic_allocator::allocate_bytes)
5017         (polymorphic_allocator::deallocate_bytes)
5018         (polymorphic_allocator::allocate_object)
5019         (polymorphic_allocator::deallocate_object)
5020         (polymorphic_allocator::new_object)
5021         (polymorphic_allocator::delete_object): New member functions for
5022         C++20.
5023         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
5024         test.
5025
5026 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
5027
5028         PR libstdc++/89562
5029         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
5030         mode for mingw.
5031
5032 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
5033
5034         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
5035         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
5036
5037         * include/std/memory (uses_allocator_construction_args): New set of
5038         overloaded functions.
5039         (make_obj_using_allocator, uninitialized_construct_using_allocator):
5040         New functions.
5041         * include/std/memory_resource (polymorphic_allocator::construct)
5042         [__cplusplus > 201703l]: Replace all overloads with a single function
5043         using uses_allocator_construction_args.
5044         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
5045         test.
5046         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
5047
5048 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
5049
5050         PR libstdc++/89466
5051         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
5052         stylesheet directories before check for xsltproc. Try to use
5053         xmlcatalog to find local stylesheet directory before trying hardcoded
5054         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
5055         check to look for the same stylesheet as doc/Makefile.am uses. Don't
5056         use xsltproc if xmlcatalog fails to find a local stylesheet.
5057         * configure.ac: Check for xmlcatalog.
5058         * Makefile.in: Regenerate.
5059         * configure: Likewise.
5060         * doc/Makefile.in: Likewise.
5061         * include/Makefile.in: Likewise.
5062         * libsupc++/Makefile.in: Likewise.
5063         * po/Makefile.in: Likewise.
5064         * python/Makefile.in: Likewise.
5065         * src/Makefile.in: Likewise.
5066         * src/c++11/Makefile.in: Likewise.
5067         * src/c++17/Makefile.in: Likewise.
5068         * src/c++98/Makefile.in: Likewise.
5069         * src/filesystem/Makefile.in: Likewise.
5070         * testsuite/Makefile.in: Likewise.
5071
5072 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
5073
5074         PR libstdc++/89477
5075         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
5076         container deduction guides.
5077         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
5078         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
5079         parameters in deduction guides.
5080         * include/bits/stl_multimap.h (multimap): Likewise.
5081         * include/bits/stl_multiset.h (multiset): Likewise.
5082         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
5083         * include/bits/stl_set.h (set): Likewise.
5084         * include/bits/stl_stack.h (stack): Likewise.
5085         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
5086         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
5087         constrain parameters in deduction guides.
5088         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
5089         Likewise.
5090         * testsuite/23_containers/map/cons/deduction.cc: Test additional
5091         deduction cases.
5092         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
5093         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
5094         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
5095         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
5096         Likewise.
5097         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
5098         Likewise.
5099         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
5100
5101         PR libstdc++/89416
5102         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
5103         to class template and partial specialization using void_t.
5104         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5105
5106 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
5107
5108         PR libstdc++/89416
5109         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
5110         copy and move members public.
5111
5112 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
5113
5114         * include/std/type_traits (__underlying_type_impl): New helper to
5115         make underlying_type SFINAE-friendly.
5116         (underlying_type): Derive from __underlying_type_impl.
5117         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
5118         test.
5119
5120         PR libstdc++/89446
5121         * include/bits/char_traits.h (__constant_char_array): Check index is
5122         in range before dereferencing.
5123         (char_traits<char>::compare, char_traits<char>::find)
5124         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
5125         immediately if n is zero.
5126         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
5127         Remove workarounds for PR 67026.
5128         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
5129         New test.
5130         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
5131         New test.
5132
5133 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5134
5135         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
5136         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
5137
5138 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
5139
5140         PR libstdc++/89402
5141         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
5142         type to std::size_t and argument to type to long double.
5143
5144 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5145
5146         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
5147         * config/abi/post/sparc64-linux-gnu: New directory.
5148         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
5149         * config/abi/post/sparc64-linux-gnu/32: New directory.
5150         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
5151
5152 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5153
5154         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
5155         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
5156         test.
5157
5158 2019-02-22  Tom Honermann  <tom@honermann.net>
5159
5160         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
5161         printers for u8string and u8string_view.
5162
5163 2019-02-22  Tom Honermann  <tom@honermann.net>
5164
5165         * testsuite/18_support/byte/ops.cc: Validate
5166         std::to_integer<char8_t>, std::to_integer<char16_t>, and
5167         std::to_integer<char32_t>.
5168         * testsuite/18_support/numeric_limits/dr559.cc: Validate
5169         std::numeric_limits<char8_t>.
5170         * testsuite/18_support/numeric_limits/lowest.cc: Validate
5171         std::numeric_limits<char8_t>::lowest().
5172         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
5173         std::numeric_limits<char8_t>::max_digits10.
5174         * testsuite/18_support/type_info/fundamental.cc: Validate
5175         typeinfo for char8_t.
5176         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
5177         std::from_chars with char8_t.
5178         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
5179         Validate explicit instantiation of std::hash<char8_t>.
5180         * testsuite/20_util/is_integral/value.cc: Validate
5181         std::is_integral<char8_t>.
5182         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
5183         Validate std::make_signed<char8_t>.
5184         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
5185         Validate u8string construction from char8_t sources.
5186         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
5187         std::pmr::u8string.
5188         * testsuite/21_strings/basic_string_view/operations/compare/
5189         char/70483.cc: Validate substr operations on u8string_view.
5190         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
5191         the u8string_view typedef is defined.
5192         * testsuite/21_strings/char_traits/requirements/
5193         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
5194         member functions.
5195         * testsuite/21_strings/char_traits/requirements/
5196         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
5197         constexpr member functions.
5198         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
5199         that the u8string typedef is defined.
5200         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
5201         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
5202         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
5203         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
5204         numbers.
5205         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
5206         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
5207         Likewise.
5208         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
5209         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
5210         Validate std::atomic<char8_t>::is_always_lock_free
5211         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
5212         Update line numbers.
5213         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
5214         Likewise.
5215         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
5216         Likewise.
5217         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
5218         Validate std::experimental::pmr::u8string.
5219         * testsuite/experimental/string_view/typedefs.cc: Validate that the
5220         u8string_view typedef is defined.
5221         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
5222         char32_t to the typelists.
5223
5224 2019-02-22  Tom Honermann  <tom@honermann.net>
5225
5226         * include/ext/typelist.h: Constrain a partial specialization of
5227         typelist::detail::append_ to only match chain<T1,T2>.
5228
5229 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5230
5231         PR libstdc++/89416
5232         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
5233         class template with class. Replace move and copy member types with
5234         member alias templates, so they are only instantiated when needed.
5235         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5236         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
5237         test for C++11/14/17 as well.
5238         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
5239         test.
5240
5241 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
5242
5243         PR libstdc++/89402
5244         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
5245         _GLIBCXX_PURE to the alias declaration.
5246
5247 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
5248
5249         * testsuite/21_strings/basic_string/literals/types.cc
5250         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
5251         * testsuite/21_strings/basic_string/literals/values.cc
5252         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5253         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
5254         potentially having different type.
5255         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
5256         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
5257         to char.
5258         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
5259         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
5260         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
5261         string literals only using basic character set.
5262         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
5263         u8 literals to char.
5264         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
5265         Test ATOMIC_CHAR8_T_LOCK_FREE.
5266         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
5267         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
5268         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
5269         * testsuite/experimental/string_view/literals/types.cc
5270         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
5271         literal.
5272         * testsuite/experimental/string_view/literals/values.cc
5273         [_GLIBCXX_USE_CHAR8_T]: Likewise.
5274
5275 2019-02-19  Tom Honermann  <tom@honermann.net>
5276
5277         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
5278         from char16_32_t.cc; validates numeric_limits<char8_t>.
5279         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
5280         test cloned from types.cc; validates operator""s for char8_t
5281         returns u8string.
5282         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
5283         test cloned from values.cc; validates construction and comparison
5284         of u8string values.
5285         * testsuite/21_strings/basic_string/requirements/
5286         /explicit_instantiation/char8_t/1.cc: New test cloned from
5287         char16_t/1.cc; validates explicit instantiation of
5288         basic_string<char8_t>.
5289         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
5290         New test cloned from types.cc; validates operator""sv for char8_t
5291         returns u8string_view.
5292         * testsuite/21_strings/basic_string_view/literals/
5293         values-char8_t.cc: New test cloned from values.cc; validates
5294         construction and comparison of u8string_view values.
5295         * testsuite/21_strings/basic_string_view/requirements/
5296         explicit_instantiation/char8_t/1.cc: New test cloned from
5297         char16_t/1.cc; validates explicit instantiation of
5298         basic_string_view<char8_t>.
5299         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
5300         New test cloned from char16_t/65049.cc; validates that
5301         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
5302         * testsuite/21_strings/char_traits/requirements/char8_t/
5303         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
5304         that char_traits<char8_t> member typedefs are present and correct.
5305         * testsuite/21_strings/char_traits/requirements/
5306         explicit_instantiation/char8_t/1.cc: New test cloned from
5307         char16_t/1.cc; validates explicit instantiation of
5308         char_traits<char8_t>.
5309         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
5310         from char16_t.cc: validates
5311         codecvt<char16_t, char8_t, mbstate_t>.
5312         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
5313         from char32_t.cc: validates
5314         codecvt<char32_t, char8_t, mbstate_t>.
5315         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
5316         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
5317         codecvt<char32_t, char8_t, std::mbstate_t>.
5318         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
5319         test cloned from string.cc; validates filesystem::path construction
5320         from char8_t input.
5321         * testsuite/experimental/feat-char8_t.cc: New test; validates that
5322         the __cpp_lib_char8_t feature test macro is defined with the
5323         correct value.
5324         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
5325         New test cloned from string.cc; validates filesystem::path
5326         construction from char8_t input.
5327         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
5328         test cloned from types.cc; validates operator""sv for char8_t
5329         returns u8string_view.
5330         * testsuite/experimental/string_view/literals/values-char8_t.cc:
5331         New test cloned from values.cc; validates construction and
5332         comparison of u8string_view values.
5333         * testsuite/experimental/string_view/requirements/
5334         explicit_instantiation/char8_t/1.cc: New test cloned from
5335         char16_t/1.cc; validates explicit instantiation of
5336         basic_string_view<char8_t>.
5337         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
5338         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
5339         enabled.
5340
5341 2019-02-19  Tom Honermann  <tom@honermann.net>
5342
5343         P0482R5 char8_t: Standard library support
5344         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
5345         typeinfo symbols for char8_t.
5346         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
5347         (GLIBCXX_3.4.26): Add symbols for specializations of
5348         numeric_limits and codecvt that involve char8_t.
5349         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
5350         * include/bits/atomic_base.h: Add atomic_char8_t.
5351         * include/bits/basic_string.h: Add std::hash<u8string> and
5352         operator""s(const char8_t*, size_t).
5353         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
5354         __cpp_lib_char8_t.
5355         * include/bits/char_traits.h: Add char_traits<char8_t>.
5356         * include/bits/codecvt.h: Add
5357         codecvt<char16_t, char8_t, mbstate_t>,
5358         codecvt<char32_t, char8_t, mbstate_t>,
5359         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5360         codecvt_byname<char32_t, char8_t, mbstate_t>.
5361         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
5362         recognize char8_t as an integral type.
5363         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
5364         char8_t.
5365         (path::u8string): Return std::u8string when char8_t support is
5366         enabled.
5367         (path::generic_u8string): Likewise.
5368         (path::_S_convert): Handle conversion from char8_t input.
5369         (path::_S_str_convert): Likewise.
5370         * include/bits/functional_hash.h: Add hash<char8_t>.
5371         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
5372         char8_t.
5373         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
5374         for new char8_t specializations.
5375         * include/bits/localefwd.h: Add missing declarations of
5376         codecvt<char16_t, char, mbstate_t> and
5377         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
5378         codecvt<char16_t, char8_t, mbstate_t> and
5379         codecvt<char32_t, char8_t, mbstate_t>.
5380         * include/bits/postypes.h: Add u8streampos
5381         * include/bits/stringfwd.h: Add declarations of
5382         char_traits<char8_t> and u8string.
5383         * include/c_global/cstddef: Add __byte_operand<char8_t>.
5384         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
5385         Recognize char8_t.
5386         (path::u8string): Return std::u8string when char8_t support is
5387         enabled.
5388         (path::generic_u8string): Likewise.
5389         (path::_S_convert): Handle conversion from char8_t input.
5390         (path::_S_str_convert): Likewise.
5391         * include/experimental/string: Add u8string.
5392         * include/experimental/string_view: Add u8string_view,
5393         hash<experimental::u8string_view>, and
5394         operator""sv(const char8_t*, size_t).
5395         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
5396         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
5397         as a character type.
5398         * include/std/limits: Add numeric_limits<char8_t>.
5399         * include/std/string_view: Add u8string_view,
5400         hash<experimental::u8string_view>, and
5401         operator""sv(const char8_t*, size_t).
5402         * include/std/type_traits: Add __is_integral_helper<char8_t>,
5403         __make_unsigned<char8_t>, and __make_signed<char8_t>.
5404         * libsupc++/atomic_lockfree_defines.h: Define
5405         ATOMIC_CHAR8_T_LOCK_FREE.
5406         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
5407         codecvt.cc and limits.cc so that char8_t specializations of
5408         numeric_limits and codecvt and emitted.
5409         * src/c++11/Makefile.in: Likewise.
5410         * src/c++11/codecvt.cc: Define members of
5411         codecvt<char16_t, char8_t, mbstate_t>,
5412         codecvt<char32_t, char8_t, mbstate_t>,
5413         codecvt_byname<char16_t, char8_t, mbstate_t>, and
5414         codecvt_byname<char32_t, char8_t, mbstate_t>.
5415         * src/c++11/limits.cc: Define members of
5416         numeric_limits<char8_t>.
5417         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
5418         locale_init.cc and localename.cc.
5419         * src/c++98/Makefile.in: Likewise.
5420         * src/c++98/locale_init.cc: Add initialization for the
5421         codecvt<char16_t, char8_t, mbstate_t> and
5422         codecvt<char32_t, char8_t, mbstate_t> facets.
5423         * src/c++98/localename.cc: Likewise.
5424         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
5425
5426 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
5427
5428         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
5429         * 27_io/filesystem/operations/resize_file.cc: Likewise.
5430         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
5431
5432 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
5433
5434         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
5435         * doc/html/*: Regenerate.
5436
5437         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
5438         * doc/html/*: Regenerate.
5439
5440         * doc/xml/manual/intro.xml: Document LWG 2586 status.
5441         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
5442         allocator type in is_constructible checks.
5443         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
5444         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
5445         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
5446         problematic type from LWG 2586 discussion.
5447         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
5448         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
5449
5450         * configure.ac: Check for C11 timespec_get function.
5451         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
5452         (openbsd): Likewise
5453         * config.h.in: Regenerate.
5454         * configure: Regenerate.
5455         * include/c_global/ctime (timespec, timespec_get): Add to namespace
5456         std for C++17 and up.
5457
5458         * doc/xml/manual/intro.xml: Document LWG 2537 status.
5459         * include/bits/stl_queue.h
5460         (priority_queue(const Compare&, const Container&, const Alloc&))
5461         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
5462         make_heap.
5463         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
5464
5465         * doc/xml/manual/intro.xml: Document LWG 2566 status.
5466         * include/bits/stl_queue.h (queue, priority_queue): Add static
5467         assertions to enforce LWG 2566 requirement on value_type.
5468         * include/bits/stl_stack.h (stack): Likewise.
5469
5470         PR middle-end/89303
5471         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
5472
5473         * doc/xml/manual/intro.xml: Document LWG 2735 status.
5474         * include/bits/std_abs.h: Add comment about LWG 2735.
5475         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
5476
5477 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
5478
5479         PR libstdc++/89345
5480         * include/std/version [__cpp_impl_destroying_delete]
5481         (__cpp_lib_destroying_delete): Only define for C++2a and later.
5482         * libsupc++/new [__cpp_impl_destroying_delete]
5483         (__cpp_lib_destroying_delete): Likewise.
5484         (destroying_delete_t, destroying_delete): Likewise, but define even
5485         when __cpp_impl_destroying_delete is not defined.
5486         * testsuite/18_support/destroying_delete.cc: New test.
5487
5488 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
5489
5490         PR libstdc++/89023
5491         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
5492         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
5493         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
5494         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
5495
5496 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
5497
5498         PR libstdc++/71044
5499         * include/bits/fs_path.h (path::has_root_name)
5500         (path::has_root_directory, path::has_root_path)
5501         (path::has_relative_path, path::has_parent_path)
5502         (path::has_filename, path::has_stem, path::has_extension)
5503         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
5504         noexcept.
5505         * src/c++17/fs_path.cc (path::has_root_name)
5506         (path::has_root_directory, path::has_root_path)
5507         (path::has_relative_path, path::has_parent_path)
5508         (path::has_filename, path::_M_find_extension): Add noexcept.
5509
5510 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
5511
5512         PR libstdc++/89102 (partial)
5513         * include/std/type_traits (common_type<>): Define.
5514         (common_type<T>): Derive from common_type<T, T>.
5515         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
5516         Test zero-length template argument list.
5517         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
5518         Test additional single argument cases.
5519         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
5520         Adjust expected error.
5521
5522 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
5523
5524         PR libstdc++/89128
5525         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
5526         guides.
5527         * include/bits/stl_stack.h (stack): Likewise.
5528         * testsuite/23_containers/priority_queue/deduction.cc: New test.
5529         * testsuite/23_containers/queue/deduction.cc: New test.
5530         * testsuite/23_containers/stack/deduction.cc: New test.
5531
5532         PR libstdc++/89194
5533         * include/std/type_traits (__is_convertible_helper)
5534         (__is_convertible_helper<_From, _To, false>): Revert changes to
5535         support is_nothrow_convertible.
5536         (__is_nt_convertible_helper): New helper.
5537         (is_nothrow_convertible): Use __is_nt_convertible_helper.
5538
5539         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
5540         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
5541
5542         PR libstdc++/89130
5543         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
5544         __is_alloc_insertable_impl. Replace single type member with two
5545         members, one for each of copy and move insertable.
5546         (__is_move_insertable): New trait for internal use.
5547         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
5548         (vector::_S_nothrow_relocate(true_type)): New functions to
5549         conditionally check if __relocate_a can throw.
5550         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
5551         on __is_move_insertable.
5552         (vector::_S_do_relocate): New overloaded functions to conditionally
5553         call __relocate_a.
5554         (vector::_S_relocate): New function that dispatches to _S_do_relocate
5555         based on _S_use_relocate.
5556         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5557         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
5558         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
5559
5560         PR libstdc++/89090
5561         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
5562         parameter unnamed. Add message to static assertion.
5563         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5564         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
5565         in C++11 code.
5566
5567 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
5568
5569         PR libstdc++/87106
5570         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
5571         Rename...
5572         (__is_bitwise_relocatable): ... to this.
5573         (__relocate_a_1): Adapt.
5574         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
5575         (__is_bitwise_relocatable): ... to this.
5576
5577 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
5578
5579         PR libstdc++/89117
5580         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
5581         final component as well as from _M_pathname. Append the dot using
5582         operator+= instead of only to _M_pathname.
5583         (path::_M_find_extension): Reformat slightly.
5584         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
5585         Add more test cases.
5586
5587 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
5588
5589         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
5590
5591 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
5592
5593         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
5594         constexpr specifiers from arg and proj.
5595
5596         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
5597         __shared_ptr instantiations used by gcc4-compatible ABI.
5598
5599         * include/experimental/forward_list (experimental::erase): Qualify
5600         call to erase_if.
5601         * include/experimental/list (experimental::erase): Likewise.
5602         * include/std/forward_list (std::erase): Likewise.
5603         * include/std/list (std::erase): Likewise.
5604
5605         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
5606         C++2a.
5607         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
5608         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
5609         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
5610         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
5611         * testsuite/ext/array_allocator/26875.cc: Likewise.
5612         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
5613         * testsuite/util/replacement_memory_operators.h: Likewise.
5614         * testsuite/util/testsuite_allocator.h: Likewise.
5615
5616         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
5617         normal mode vector, even for debug mode.
5618         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
5619         Define alias template for normal mode vector.
5620
5621 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
5622
5623         PR libstdc++/68737
5624         * config/locale/generic/c_locale.h (__convert_from_v)
5625         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5626         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5627         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
5628         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
5629
5630 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
5631
5632         PR libstdc++/88840
5633         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
5634         data member with static member function _S_use_relocate().
5635         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
5636         (vector::_M_default_append): Use _S_use_relocate() instead of
5637         __use_relocate.
5638
5639         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
5640         sign of results.
5641
5642 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
5643
5644         PR libstdc++/88740
5645         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
5646         write to stderr instead of using printf.
5647
5648 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
5649
5650         PR libstdc++/86590
5651         * include/bits/char_traits.h (__constant_string_p,
5652         __constant_char_array_p): Use __builtin_is_constant_evaluated if
5653         available.
5654
5655 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
5656
5657         Implement C++20 P0600r1.
5658         * include/backward/hash_map: Add nodiscard attribute to empty.
5659         * include/backward/hash_set: Likewise.
5660         * backward/hashtable.h: Likewise.
5661         * include/bits/basic_string.h: Likewise.
5662         * include/bits/forward_list.h: Likewise.
5663         * include/bits/hashtable.h: Likewise.
5664         * include/bits/regex.h: Likewise.
5665         * include/bits/stl_deque.h: Likewise.
5666         * include/bits/stl_list.h: Likewise.
5667         * include/bits/stl_map.h: Likewise.
5668         * include/bits/stl_multimap.h: Likewise.
5669         * include/bits/stl_multiset.h: Likewise.
5670         * include/bits/stl_queue.h: Likewise.
5671         * include/bits/stl_set.h: Likewise.
5672         * include/bits/stl_stack.h: Likewise.
5673         * include/bits/stl_tree.h: Likewise.
5674         * include/bits/stl_vector.h: Likewise.
5675         * include/bits/unordered_map.h: Likewise.
5676         * include/bits/unordered_set.h: Likewise.
5677         * include/debug/array: Likewise.
5678         * include/experimental/any: Likewise.
5679         * include/experimental/bits/fs_path.h: Likewise.
5680         * include/experimental/internet: Likewise.
5681         * include/experimental/string_view: Likewise.
5682         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
5683         Likewise.
5684         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
5685         Likewise.
5686         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
5687         Likewise.
5688         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
5689         Likewise.
5690         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
5691         Likewise.
5692         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
5693         Likewise.
5694         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
5695         Likewise.
5696         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
5697         Likewise.
5698         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5699         info_fn_imps.hpp: Likewise.
5700         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
5701         left_child_next_sibling_heap_.hpp: Likewise.
5702         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
5703         Likewise.
5704         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
5705         Likewise.
5706         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
5707         Likewise.
5708         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
5709         Likewise.
5710         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
5711         Likewise.
5712         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
5713         Likewise.
5714         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
5715         Likewise.
5716         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
5717         * include/ext/pb_ds/trie_policy.hpp: Likewise.
5718         * include/ext/rope: Likewise.
5719         * include/ext/slist: Likewise.
5720         * include/ext/vstring.h: Likewise.
5721         * include/profile/array: Likewise.
5722         * include/std/array: Likewise.
5723         * include/tr1/array: Likewise.
5724         * include/tr1/hashtable.h: Likewise.
5725         * include/tr1/regex: Likewise.
5726         * include/tr2/dynamic_bitset: Likewise.
5727         * include/bits/alloc_traits.h: Add nodiscard attribute to
5728         allocate.
5729         * include/experimental/memory_resource: Likewise.
5730         * include/ext/alloc_traits.h: Likewise.
5731         * include/ext/array_allocator.h: Likewise.
5732         * include/ext/bitmap_allocator.h: Likewise.
5733         * include/ext/debug_allocator.h: Likewise.
5734         * include/ext/extptr_allocator.h: Likewise.
5735         * include/ext/mt_allocator.h: Likewise.
5736         * include/ext/new_allocator.h: Likewise.
5737         * include/ext/pool_allocator.h: Likewise.
5738         * include/ext/throw_allocator.h: Likewise.
5739         * include/std/scoped_allocator: Likewise.
5740         * libsupc++/eh_alloc.cc: Likewise.
5741         * include/std/future: Add nodiscard attribute to async.
5742         * libsupc++/new: Add nodiscard attribute to new.
5743
5744 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
5745
5746         PR libstdc++/87514
5747         PR libstdc++/87520
5748         PR libstdc++/88782
5749         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
5750         * include/bits/shared_ptr.h
5751         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
5752         (allocate_shared): Change to use new tag type.
5753         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
5754         Declare new member function.
5755         (_Sp_alloc_shared_tag): Define new type.
5756         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
5757         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
5758         _Sp_make_shared_tag::_S_eq to check type_info.
5759         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
5760         Constrain to prevent being called with _Sp_alloc_shared_tag.
5761         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
5762         Replace constructor with ...
5763         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
5764         reference parameter so address of the new object can be returned to
5765         the caller. Obtain the allocator from the tag type.
5766         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
5767         constructor with ...
5768         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
5769         to the __shared_count constructor.
5770         (__allocate_shared): Change to use new tag type.
5771         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
5772
5773 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
5774
5775         * src/c++17/fs_ops.cc
5776         (equivalent(const path&, const path&, error_code&))
5777         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
5778         compare files instead of relying on incomplete info returned by stat.
5779
5780         PR libstdc++/88884
5781         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
5782         if the path is already absolute.
5783         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
5784         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
5785
5786         PR libstdc++/88881
5787         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
5788         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
5789         of filesystem::exists.
5790         (create_directories(const path&, error_code&)): Add assertions.
5791         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
5792         Add workaround for bug in _wstat for paths with trailing slash.
5793         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
5794         for expected behaviour on mingw.
5795         * testsuite/experimental/filesystem/operations/create_directories.cc:
5796         Likewise.
5797         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
5798         "TMP" instead of "TMPDIR" and clean environment before each test. Do
5799         not test permissions on mingw targets.
5800
5801 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
5802
5803         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
5804         constructors and open members taking wide strings. Fix patterns for
5805         filesystem::path members to match wstring_view parameters. Add
5806         exports for shared_ptr members used by directory iterators.
5807         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
5808         error code parameter if the file doesn't exist.
5809         * src/filesystem/ops.cc (remove(const path&, error_code&)):
5810         Likewise.
5811         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
5812         values for mingw targets, where "/" is not an absolute path. Do not
5813         test symlinks on mingw targets.
5814         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
5815         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
5816         on mingw targets.
5817         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
5818         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
5819         that each component of the path is created.
5820         * testsuite/experimental/filesystem/operations/create_directories.cc:
5821         Likewise.
5822         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
5823         permissions on mingw targets.
5824         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
5825         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
5826         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
5827         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
5828         mingw targets.
5829         * testsuite/experimental/filesystem/operations/permissions.cc:
5830         Likewise.
5831         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
5832         symlinks or permissions on mingw targets.
5833         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
5834         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
5835         symlinks on mingw targets.
5836         * testsuite/experimental/filesystem/operations/remove_all.cc:
5837         Likewise.
5838         * testsuite/27_io/filesystem/operations/status.cc: Do not test
5839         permissions on mingw targets.
5840         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
5841         test symlinks on mingw targets.
5842         * testsuite/experimental/filesystem/operations/space.cc: Fix test
5843         for mingw targets.
5844
5845 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
5846
5847         PR libstdc++/88738
5848         Warn about unused comparisons of shared_ptr/unique_ptr
5849         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
5850         * include/bits/shared_ptr.h: Use it for operator ==, !=,
5851         <, <=, >, >= for shared_ptr.
5852         * include/bits/unique_ptr.h: Likewise for unique_ptr.
5853
5854 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
5855
5856         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
5857         as 201611L, because P0497R0 changes are supported.
5858         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
5859
5860         * include/bits/erase_if.h [__cplusplus > 201703L]
5861         (__cpp_lib_erase_if): Only define for C++2a.
5862         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5863         (__cpp_lib_null_iterators): Define.
5864         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
5865         (__cpp_lib_null_iterators): Define.
5866         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
5867
5868         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
5869         status.
5870         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
5871         Define.
5872         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
5873         changes are supported.
5874         * include/std/optional (__cpp_lib_optional): Likewise.
5875         * include/std/variant (__cpp_lib_variant): Likewise.
5876         * include/std/version [!__STRICT_ANSI__]
5877         (__cpp_lib_uncaught_exceptions): Define as long integer.
5878         [__cplusplus >= 201703L] (__cpp_lib_any)
5879         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
5880         (__cpp_lib_variant): Define for C++17.
5881         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
5882         as long integer.
5883         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
5884         integer.
5885
5886         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
5887
5888 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
5889
5890         PR libstdc++/88811
5891         PR libstdc++/83306
5892         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
5893         before second path.
5894         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
5895         test.
5896
5897 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5898
5899         * doc/xml/manual/intro.xml: Include new section.
5900         * doc/xml/manual/status_cxx2017.xml: Document more
5901         implementation-defined properties of the library.
5902         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
5903         * doc/html/*: Regenerate.
5904
5905         * include/bits/refwrap.h [__cplusplus > 201703L]
5906         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
5907         (_Reference_wrapper_base_memfun): Do not define for C++2a.
5908         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
5909         for C++2a.
5910         (reference_wrapper::operator()): Add static assertion.
5911         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
5912
5913         * include/std/chrono (duration_values::zero(), duration_values::min())
5914         (duration_values::max()): Add noexcept.
5915         (duration::zero(), duration::min(), duration::max()): Likewise.
5916         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
5917         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
5918         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
5919
5920         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
5921
5922 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
5923
5924         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
5925         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
5926
5927 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
5928
5929         PR libstdc++/88802
5930         * include/bits/functional_hash.h (hash<nullptr_t>): Define
5931         specialization for C++17 (P0513R0, LWG 2817).
5932         * testsuite/20_util/hash/nullptr.cc: New test.
5933
5934         PR libstdc++/88125
5935         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
5936         pattern for std::basic_stringbuf::str().
5937
5938         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
5939         basic_ostream::operator<< patterns.
5940
5941 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5942
5943         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
5944         test failures on targets with 32-bit time_t.
5945
5946         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
5947         * include/std/deque: Likewise.
5948         * include/std/forward_list: Likewise.
5949         * include/std/list: Likewise.
5950         * include/std/string: Likewise.
5951         * include/std/vector: Likewise.
5952         * include/std/version: Likewise.
5953         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
5954         * testsuite/23_containers/deque/erasure.cc: Likewise.
5955         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
5956         * testsuite/23_containers/list/erasure.cc: Likewise.
5957         * testsuite/23_containers/map/erasure.cc: Likewise.
5958         * testsuite/23_containers/set/erasure.cc: Likewise.
5959         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
5960         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
5961         * testsuite/23_containers/vector/erasure.cc: Likewise.
5962
5963         * include/experimental/internet [AI_NUMERICSERV]
5964         (resolver_base::numeric_service): Define conditionally.
5965         * testsuite/experimental/net/internet/resolver/base.cc: Test it
5966         conditionally.
5967         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
5968         Likewise.
5969
5970 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
5971             Jonathan Wakely  <jwakely@redhat.com>
5972
5973         Implement LWG 2221
5974         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
5975         (GLIBCXX_3.4.26): Add new exports.
5976         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
5977         correct list of sources.
5978         * include/Makefile.in: Regenerate.
5979         * include/std/ostream (operator<<(nullptr_t)): New member function.
5980         * src/c++17/ostream-inst.cc: New file.
5981         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
5982         test.
5983
5984 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
5985
5986         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
5987         of the source file containing the caller.
5988         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
5989         directories created by test.
5990         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
5991         Likewise.
5992         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
5993         Likewise.
5994         * testsuite/experimental/filesystem/iterators/
5995         recursive_directory_iterator.cc: Likewise.
5996
5997 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
5998
5999         PR tree-optimization/88775
6000         * include/bits/stl_function.h (greater<_Tp*>::operator(),
6001         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
6002         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
6003         instead of __builtin_constant_p if available.  Don't bother with
6004         the pointer comparison in C++11 and earlier.
6005
6006 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
6007
6008         PR other/16615
6009
6010         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
6011         with "cannot".
6012
6013 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
6014
6015         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
6016         for filesystem::path. Give variables more distinctive names.
6017
6018         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
6019         member function to perform non-trivial assignment.
6020         (_Optional_payload_base::_M_move_assign): Likewise.
6021         (_Optional_payload<T, true, false, true>::operator=)
6022         (_Optional_payload<T, true, true, false>::operator=)
6023         (_Optional_payload<T, true, false, false>::operator=): Call
6024         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
6025
6026         PR libstdc++/88204
6027         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
6028         test std::complex<long double> if long double format is IBM128.
6029         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
6030         Likewise.
6031
6032 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
6033
6034         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
6035         for old std::unique_ptr layout.
6036         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
6037         to become valueless. Add filesystem::path tests.
6038
6039         PR libstdc++/87855
6040         * include/std/optional (_Optional_payload_base): New class template
6041         for common code hoisted from _Optional_payload specializations. Use
6042         a template for the union, to allow a partial specialization for
6043         types with non-trivial destructors. Add constructors for in-place
6044         initialization to the union.
6045         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
6046         to perform non-trivial copy construction, instead of relying on
6047         non-standard copy elision in a delegating constructor.
6048         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
6049         non-trivial move construction.
6050         (_Optional_payload): Derive from _Optional_payload_base and use it
6051         for everything except the non-trivial assignment operators, which are
6052         defined as needed.
6053         (_Optional_payload<false, C, M>): Derive from the specialization
6054         _Optional_payload<true, false, false> and add a destructor.
6055         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
6056         Forward to corresponding members of _Optional_payload.
6057         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
6058         Hoist common members from _Optional_base.
6059         (_Optional_base): Make all members and base class public.
6060         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
6061         _Optional_base_impl.
6062         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
6063         support for new std::optional layout.
6064         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
6065
6066         PR libstdc++/88066
6067         * include/bits/locale_conv.h: Use <> for includes not "".
6068         * include/ext/random: Likewise.
6069         * include/ext/vstring.h: Likewise.
6070
6071 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
6072
6073         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
6074         (GLIBCXX_3.4.21): Likewise.
6075
6076 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
6077
6078         PR libstdc++/88749
6079         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
6080         to match the one that controls whether utimbuf and utime are declared.
6081
6082 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
6083
6084         PR libstdc++/87787
6085         * include/bits/char_traits.h (char_traits::move): Do not pass null
6086         pointers to memmove.
6087         * include/bits/locale_facets.h
6088         (ctype<char>::widen(const char*, const char*, char*)): Do not
6089         pass null pointers to memcpy.
6090         (ctype<char>::narrow(const char*, const char*, char, char*)):
6091         Likewise.
6092         (ctype<char>::do_widen(const char*, const char*, char*)):
6093         Likewise.
6094         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
6095         Likewise.
6096
6097         * doc/xml/manual/spine.xml: Update copyright years.
6098         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
6099         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
6100         for C++17 filesystem library.
6101         * doc/html/*: Regenerate.
6102
6103         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
6104         * config.h.in: Regenerate.
6105         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
6106         alphabetically and add missing entries for copy_symlink,
6107         hard_link_count, rename, and resize_file.
6108         * configure: Regenerate.
6109         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
6110         used unconditionally.
6111         * src/filesystem/ops-common.h (__gnu_posix::truncate)
6112         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
6113         supports truncating to zero length.
6114         * testsuite/27_io/filesystem/operations/all.cc: New test.
6115         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
6116
6117 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
6118
6119         PR libstdc++/86756
6120         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
6121         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
6122         * config.h.in: Regenerate.
6123         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
6124         remaining std::filesystem types and functions.
6125         * configure: Regenerate.
6126         * src/c++17/Makefile.am: Add C++17 filesystem sources.
6127         * src/c++17/Makefile.in: Regenerate.
6128         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
6129         here, and change name of included file.
6130         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
6131         here, and change name of included file.
6132         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
6133         path to dir-common.h.
6134         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
6135         path to ops-common.h. Disable -Wunused-parameter warnings.
6136         (internal_file_clock): Define unconditionally.
6137         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
6138         define.
6139         (do_copy_file, do_space): Move definitions to ops.common.h.
6140         (copy, file_size, hard_link_count, last_write_time, space): Only
6141         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
6142         report an error.
6143         (last_write_time, read_symlink): Remove unused attributes from
6144         parameters.
6145         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
6146         * src/filesystem/Makefile.in: Regenerate.
6147         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
6148         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
6149         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
6150         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
6151         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
6152         dummy types and functions instead of using #error.
6153         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
6154         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
6155         in terms of stat.
6156         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
6157         (do_copy_file, do_space): Move definitions here from std-ops.cc.
6158         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
6159         to account for new namespace.
6160         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
6161         -lstdc++fs from dg-options.
6162         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
6163         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
6164         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
6165         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
6166         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
6167         Likewise.
6168         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
6169         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
6170         Likewise.
6171         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
6172         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
6173         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
6174         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
6175         * testsuite/27_io/filesystem/operations/create_directories.cc:
6176         Likewise.
6177         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
6178         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
6179         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
6180         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
6181         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
6182         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
6183         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
6184         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
6185         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
6186         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
6187         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
6188         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
6189         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
6190         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
6191         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
6192         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
6193         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
6194         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
6195         Likewise.
6196         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
6197
6198
6199         PR libstdc++/86756
6200         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
6201         typeinfo and vtables less greedy.
6202         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
6203         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
6204         * src/c++17/Makefile.in: Regenerate.
6205         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
6206         here, and change name of included file.
6207         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
6208         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
6209         from sources.
6210         * src/filesystem/Makefile.in: Regenerate.
6211         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
6212         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
6213         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
6214         from dg-options and remove dg-require-filesystem-ts.
6215         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
6216         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
6217         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
6218         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
6219         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
6220         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
6221         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
6222         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
6223         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
6224         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
6225         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
6226         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
6227         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
6228         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
6229         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
6230         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
6231         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
6232         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
6233         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
6234         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
6235         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
6236         Likewise.
6237         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
6238         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
6239         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
6240         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
6241         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
6242         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
6243         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
6244         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
6245         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
6246         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
6247         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
6248         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
6249         Likewise.
6250         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
6251         Likewise.
6252         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
6253         Likewise.
6254         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
6255         Likewise.
6256         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
6257         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
6258         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
6259         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
6260         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
6261         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
6262         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
6263         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
6264         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
6265         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
6266         Likewise.
6267         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
6268         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
6269         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
6270         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
6271         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
6272
6273         PR libstdc++/87431
6274         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
6275         Check is_trivially_copyable instead of is_scalar.
6276         (variant::emplace<N, Args>(Args&&...)): If construction of the new
6277         contained value can throw and its type is trivially copyable then
6278         construct into a temporary variant and move from it, to provide the
6279         strong exception safety guarantee.
6280         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
6281         Likewise.
6282         * testsuite/20_util/variant/87431.cc: New test.
6283         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
6284         conversion causes valueless state.
6285
6286         PR libstdc++/88607
6287         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
6288         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
6289         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
6290         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
6291         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
6292
6293 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
6294
6295         * include/bits/fs_fwd.h (__file_clock): Define new clock.
6296         (file_time_type): Redefine in terms of __file_clock.
6297         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
6298         overflow.
6299         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
6300         internal linkage.
6301         (internal_file_lock): New helper type for accessing __file_clock.
6302         (do_copy_file): Use internal_file_lock to convert system time to
6303         file_time_type.
6304         (last_write_time(const path&, error_code&)): Likewise.
6305         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
6306
6307 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
6308
6309         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
6310         for const member functions of std::basic_string.
6311         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
6312         in C++17.
6313         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
6314         Make non-standard constructor private.
6315         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
6316         Likewise.
6317         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
6318         explicit instantiations for C++17 as well as earlier dialects.
6319         * src/c++17/Makefile.am: Add new source files.
6320         * src/c++17/Makefile.in: Regenerate.
6321         * src/c++17/cow-string-inst.cc: New file defining explicit
6322         instantiations for basic_string member functions added in C++17.
6323         * src/c++17/string-inst.cc: Likewise.
6324
6325         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
6326         copy/move constructors for old std::basic_string.
6327         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
6328         (basic_string::reference, basic_string::const_reference): Define
6329         as plain references for C++11 and later.
6330         (basic_string::basic_string()): Put constructor body outside
6331         preprocessor conditional groups.
6332         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
6333         instead of copying it.
6334         (basic_string::basic_string(const basic_string&, const _Alloc&)):
6335         Define.
6336         (basic_string::basic_string(basic_string&&, const _Alloc&)):
6337         Define.
6338         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
6339         cases for old basic_string.
6340         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
6341         allocator-extended constructors unconditionally. Add extra members to
6342         allocator type when using old string ABI.
6343         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
6344         for old string ABI.
6345         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
6346
6347         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
6348         -fno-inline added to test flags.
6349
6350         * testsuite/21_strings/basic_string/requirements/
6351         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
6352
6353         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
6354         assertion failures with old std::string ABI.
6355
6356         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
6357         with ...
6358         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
6359         functions that will only erase elements at the end.
6360         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
6361         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
6362         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
6363         of erase(p, end()).
6364         (path::_List::pop_back()): Define.
6365         (path::_List::_M_erase_from(const_iterator)): Define.
6366         (path::operator/=(const path&)): Use pop_back to remove last component
6367         and _M_erase_from to remove multiple components.
6368         (path::_M_append(basic_string_view<value_type>)): Likewise.
6369         (path::operator+=(const path&)): Likewise.
6370         (path::_M_concat(basic_string_view<value_type>)): Likewise.
6371         (path::remove_filename()): Likewise.
6372         (path::lexically_normal()): Use _List::_Impl iterators instead of
6373         path::iterator. Use pop_back to remove components from the end. Clear
6374         trailing filename, instead of using erase(const_iterator) to remove
6375         a non-final component.
6376         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
6377         additional cases.
6378         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
6379
6380         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
6381         incorrect treatment of empty filename after trailing slash.
6382         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
6383
6384         * testsuite/21_strings/basic_string/modifiers/assign/char/
6385         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
6386         to test flags.
6387         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
6388         move_assign_optim.cc: Likewise.
6389
6390 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6391             Jakub Jelinek  <jakub@redhat.com>
6392
6393         PR libstdc++/88607
6394         * include/experimental/memory: Replace UTF-8 quote characters.
6395         * include/std/future: Replace UTF-8 "em dash" characters.
6396
6397 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
6398
6399         PR libstdc++/88607
6400         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
6401         * include/debug/forward_list: Likewise.
6402         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
6403         character.
6404         * include/experimental/chrono: Likewise.
6405         * include/experimental/functional: Likewise.
6406         * include/experimental/ratio: Likewise.
6407         * include/experimental/system_error: Likewise.
6408         * include/experimental/tuple: Likewise.
6409         * include/experimental/type_traits: Likewise.
6410         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
6411         * include/parallel/multiseq_selection.h: Likewise.
6412
6413         PR libstdc++/88681
6414         * config/abi/pre/gnu.ver: Add missing exports.
6415         * testsuite/22_locale/collate_byname/88681.cc: New test.
6416         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
6417         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
6418
6419 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
6420
6421         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
6422         initializer_list<value_type> and from input iterator ranges.
6423         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
6424
6425         * testsuite/experimental/string_view/element_access/char/empty.cc:
6426         Fix year range in copyright header.
6427
6428 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
6429
6430         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
6431         Fix year range in copyright header.
6432
6433 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
6434
6435         Update copyright years.
6436 \f
6437 Copyright (C) 2019 Free Software Foundation, Inc.
6438
6439 Copying and distribution of this file, with or without modification,
6440 are permitted in any medium without royalty provided the copyright
6441 notice and this notice are preserved.