libstdc++-v3/ChangeLog

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