libstdc++-v3/ChangeLog

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