libstdc++-v3/ChangeLog

   1 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/90246
   4         * include/std/variant (holds_alternative, get, get_if): Improve
   5         static assertion messages.
   6         (bad_variant_access::bad_variant_access()): Change default message.
   7         (__throw_bad_variant_access(bool)): New overload.
   8         (get): Use new overload.
   9         (visit, visit<R>): Improve exception message.
  10
  11         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
  12         targets. Add more cases from P0608R3.
  13         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
  14
  15         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
  16         * include/experimental/type_traits (is_detected_exact)
  17         (is_detected_exact_v): Likewise.
  18         * include/pstl/execution_defs.h (is_execution_policy)
  19         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
  20         * include/pstl/execution_impl.h (__policy_traits): Likewise.
  21         * testsuite/17_intro/names.cc: Check for more non-reserved names.
  22         * testsuite/experimental/names.cc: New test.
  23
  24         PR libstdc++/85965
  25         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
  26         assertions from the destructor.
  27         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
  28         Move static_assert for hash function to here.
  29         (_Hash_table_base::_M_equals): Move static_assert for equality
  30         predicate to here.
  31         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
  32         Remove.
  33         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
  34         the value directly instead of calling _S_value.
  35         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
  36         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
  37         _S_key(_Const_Link_type).
  38         * testsuite/23_containers/set/85965.cc: Check construction,
  39         destruction, assignment and size() do not trigger the assertions.
  40         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
  41         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
  42         expected errors.
  43         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
  44         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
  45         * testsuite/23_containers/set/48101_neg.cc: Likewise.
  46         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
  47         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
  48         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
  49         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
  50
  51         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
  52         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
  53         in C++11.
  54
  55         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
  56         P1165R1 entries.
  57         * doc/html/*: Regenerate.
  58         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
  59         of decay_t (P0777R1).
  60
  61 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
  62
  63         Move from state of allocators (LWG2593)
  64         * include/bits/stl_deque.h
  65         (_Deque_base(_Deque_base&&, false_type)): Remove.
  66         (_Deque_base(_Deque_base&&, true_type)): Remove.
  67         (_Deque_base(_Deque_base&&)): Adapt.
  68         (_Deque_base::_M_move_impl()): Remove.
  69         * testsuite/util/testsuite_allocator.h
  70         (propagating_allocator(propagating_allocator&&)): Preserve move from
  71         state.
  72         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
  73         Adapt.
  74         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
  75         Adapt.
  76         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
  77         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
  78         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
  79         Adapt.
  80         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
  81         Adapt.
  82         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
  83         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
  84         (test02): Adapt.
  85         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
  86         (test02): Adapt.
  87         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
  88         (test02): Adapt.
  89         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
  90         (test02): Adapt.
  91         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
  92         Adapt.
  93         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
  94         Adapt.
  95         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
  96         (test02): Adapt.
  97         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
  98         (test02): Adapt.
  99
 100 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
 101
 102         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
 103         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
 104
 105         * include/std/variant (__overload_set): Remove.
 106         (_Arr): New helper.
 107         (_Build_FUN): New class template to define a single FUN overload,
 108         with specializations to prevent unwanted conversions, as per P0608R3.
 109         (_Build_FUNs): New class template to build an overload set of FUN.
 110         (_FUN_type): New alias template to perform overload resolution.
 111         (__accepted_type): Use integer_constant base for failure case. Use
 112         _FUN_type for successful case.
 113         (variant::__accepted_index): Use _Tp instead of _Tp&&.
 114         (variant::variant(_Tp&&)): Likewise.
 115         (variant::operator=(_Tp&&)): Likewise.
 116
 117         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
 118         Replace raw visitation with a runtime check for the valueless state
 119         and a non-raw visitor.
 120         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
 121         (variant::index()): Remove branch.
 122         (variant::swap(variant&)): Use valueless_by_exception() instead of
 123         comparing the index to variant_npos, and add likelihood attribute.
 124
 125         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
 126         (_Hashtable_base::_Equal_hash_code): Define new class template.
 127         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
 128         _Equal_helper.
 129
 130         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
 131         Replace with _M_get non-static member function.
 132         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
 133         member function.
 134         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
 135         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
 136
 137         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
 138         _S_get accessors for members in EBO helpers.
 139         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
 140         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
 141         overloads.
 142         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
 143         helpers.
 144         (_Hashtable_base::_M_eq()): Remove non-const overload.
 145
 146 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
 147
 148         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
 149
 150 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
 151
 152         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
 153         Fix return value.
 154
 155 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 156
 157         * config/os/solaris/solaris2.10: Move to ...
 158         * config/os/solaris: ... this.
 159         * configure.host (os_include_dir): Adapt.
 160         (abi_baseline_pair): Remove Solaris 10 handling.
 161         * config/abi/post/i386-solaris2.10: Remove.
 162         * config/abi/post/sparc-solaris2.10: Remove.
 163         * config/abi/post/i386-solaris2.11: Rename to ...
 164         * config/abi/post/i386-solaris: ... this.
 165         * config/abi/post/sparc-solaris2.11: Rename to ...
 166         * config/abi/post/sparc-solaris: ... this.
 167
 168         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
 169         workaround.
 170
 171         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
 172         xfail.
 173
 174 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
 175
 176         * include/std/variant (__visit_with_index): Remove typedef.
 177         (__deduce_visit_result): New tag type.
 178         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
 179         visitation of possibly-valueless variants, forwarding to __do_visit
 180         with the relevant tag type.
 181         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
 182         and make lambda return void.
 183         (__variant_construct): Likewise.
 184         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
 185         __raw_idx_visit and make lambda return void.
 186         (_Multi_array::__untag_result): Add metafunction to check the function
 187         pointer type for a tag type that dictates the kind of visitation.
 188         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
 189         Use decltype(auto) instead of tagged function pointer type.
 190         (__gen_vtable_impl): Remove bool non-type parameter and unused
 191         _Variant_tuple parameter.
 192         (__gen_vtable_impl::__visit_invoke_impl): Remove.
 193         (__gen_vtable_impl::__do_visit_invoke): Remove.
 194         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
 195         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
 196         for the visit<R> case, rather than dispatching to separate functions.
 197         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
 198         lambda return void.
 199         (variant::swap): Likewise.
 200         (__do_visit): Replace two non-type template parameters with a single
 201         type parameter, so that the caller must specify the visitor's return
 202         type (or one of the tag types).
 203         (visit): Deduce a return type from the visitor and use the
 204         __deduce_visit_result tag to enforce that all overloads return the
 205         same type.
 206         (visit<R>): Call __do_visit<R> with explicit result type.
 207         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
 208         lambda return void.
 209
 210 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
 211
 212         nonesuch is insufficiently useless (lwg2996)
 213         * include/std/type_traits (struct __nonesuch): Added private base
 214         class to make __nonesuch not an aggregate and removed deleted default
 215         constructor.
 216         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
 217         (operator=(const pair&)): Use __nonesuch instead of
 218         __nonesuch_no_braces.
 219         (operator=(pair&&)): Likewise
 220         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
 221         of __nonesuch_no_braces.
 222         (operator=(tuple&&)): Likewise
 223         * include/experimental/type_traits (struct nonesuch): Added private
 224         base class to make nonesuch not an aggregate and removed deleted
 225         default constructor.
 226         * testsuite/20_util/nonesuch/nonesuch.cc: New.
 227         * testsuite/experimental/type_traits/nonesuch.cc: New.
 228
 229 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
 232         (_Function_handler): Remove partial specializations for void return
 233         types and pointers to member.
 234         (_Function_handler::_M_manager): Adapt to removal of
 235         _Simple_type_wrapper.
 236         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
 237         * include/std/functional (_Bind_result::__enable_if_void)
 238         (_Bind_result::__disable_if_void): Remove sfinae helpers.
 239         (_Bind_result::__call): Use __invoke_r and remove overloads for void
 240         return types.
 241         * include/std/future (__future_base::_Task_state::_M_run)
 242         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
 243         change return type of lambda expressions.
 244
 245         * include/bits/invoke.h (__invoke_r): Define new function implementing
 246         the INVOKE<R> pseudo-function.
 247         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
 248         * testsuite/20_util/function_objects/invoke/2.cc: New test.
 249
 250         * include/std/type_traits (__is_nt_convertible_helper): Define it
 251         unconditionally, not only for C++20.
 252         (__is_nothrow_convertible): Define internal trait for use in C++11.
 253         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
 254         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
 255         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
 256         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
 257         that has nothrow explicit conversion but potentially-throwing implicit
 258         conversion.
 259         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
 260         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
 261         function to only consider implicit conversions.
 262         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
 263
 264         * include/std/iterator: Include <iosfwd> instead of <istream> and
 265         <ostream>.
 266
 267         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
 268         Remove unused, non-standard function.
 269
 270         * include/bits/regex.h (match_results::max_size()): Adjust return
 271         value to account for prefix/suffix/unmatched subs.
 272         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
 273         reset the contained sub matches.
 274         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
 275         function to set result state following a failed match.
 276         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
 277         sub_match states after _M_resize. Use _M_establish_failed_match.
 278
 279         PR libstdc++/69724
 280         * include/std/thread (thread::_State_impl, thread::_S_make_state):
 281         Replace single _Callable parameter with variadic _Args pack, to
 282         forward them directly to the tuple of decayed copies.
 283         * testsuite/30_threads/thread/cons/69724.cc: New test.
 284
 285 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
 286
 287         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
 288         * include/bits/basic_string.h: (operator=(const basic_string&):
 289         Move allocator decision to assign.
 290         (assign(const basic_string&)): Move allocator decision here.
 291         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
 292         Add tests.
 293         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
 294         Add tests.
 295
 296 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
 297
 298         * testsuite/util/testsuite_allocator.h (memory_resource)
 299         (default_resource_mgr): Fix indentation.
 300
 301         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
 302         Use operator-> to access raw pointer member.
 303         * testsuite/23_containers/vector/59829.cc: Likewise.
 304         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
 305         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
 306         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
 307         for tests.
 308         (PointerBase, PointerBase_void): Derive from NullablePointer and use
 309         its constructors and equality operators. Change converting
 310         constructors to use operator-> to access private member of the other
 311         pointer type.
 312         (PointerBase_void::operator->()): Add, for access to private member.
 313         (operator-(PointerBase, PointerBase)): Change to hidden friend.
 314         (operator==(PointerBase, PointerBase)): Remove.
 315         (operator!=(PointerBase, PointerBase)): Remove.
 316
 317         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
 318         not assume field called _M_head_impl is the first tuple element.
 319         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
 320         implementation more accurate.
 321         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
 322         empty pointer type and non-empty deleter.
 323
 324         LWG 2899 - Make is_move_constructible correct for unique_ptr
 325         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
 326         move assignment operator.
 327         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
 328         (__uniq_ptr_data): New class template with conditionally deleted
 329         special members.
 330         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
 331         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
 332         constructor and move assignment operator as defaulted.
 333         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
 334         __uniq_ptr_impl::release().
 335         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
 336         to __uniq_ptr_impl::reset(pointer).
 337         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
 338         Check for new __uniq_ptr_data type.
 339         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
 340
 341 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
 342
 343         PR libstdc++/90454.cc path construction from void*
 344         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
 345         pointers to void are rejected as well as void.
 346         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
 347         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
 348         pointers to void.
 349         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
 350
 351         * doc/xml/manual/policy_data_structures.xml: Comment out stray
 352         <remark> elements. Fix formatting of bibliography references.
 353
 354 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
 355
 356         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
 357
 358 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
 359
 360         Remove Profile Mode, deprecated since 7.1.0
 361         * doc/Makefile.am: Remove XML file for profile mode docs.
 362         * doc/Makefile.in: Regenerate.
 363         * doc/xml/authors.xml: Remove authors of profile mode docs.
 364         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
 365         mode.
 366         * doc/xml/manual/debug.xml: Likewise.
 367         * doc/xml/manual/evolution.xml: Document removal of profile mode.
 368         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
 369         * doc/xml/manual/spine.xml: Remove profile mode author credit.
 370         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
 371         directive.
 372         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
 373         macro.
 374         * doc/html/*: Regenerate.
 375         * include/Makefile.am: Remove profile mode headers.
 376         * include/Makefile.in: Regenerate.
 377         * include/bits/c++config (std::__profile): Remove namespace.
 378         [_GLIBCXX_PROFILE]: Remove checks for macro.
 379         * include/profile/array: Remove.
 380         * include/profile/base.h: Remove.
 381         * include/profile/bitset: Remove.
 382         * include/profile/deque: Remove.
 383         * include/profile/forward_list: Remove.
 384         * include/profile/impl/profiler.h: Remove.
 385         * include/profile/impl/profiler_algos.h: Remove.
 386         * include/profile/impl/profiler_container_size.h: Remove.
 387         * include/profile/impl/profiler_hash_func.h: Remove.
 388         * include/profile/impl/profiler_hashtable_size.h: Remove.
 389         * include/profile/impl/profiler_list_to_slist.h: Remove.
 390         * include/profile/impl/profiler_list_to_vector.h: Remove.
 391         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
 392         * include/profile/impl/profiler_node.h: Remove.
 393         * include/profile/impl/profiler_state.h: Remove.
 394         * include/profile/impl/profiler_trace.h: Remove.
 395         * include/profile/impl/profiler_vector_size.h: Remove.
 396         * include/profile/impl/profiler_vector_to_list.h: Remove.
 397         * include/profile/iterator_tracker.h: Remove.
 398         * include/profile/list: Remove.
 399         * include/profile/map: Remove.
 400         * include/profile/map.h: Remove.
 401         * include/profile/multimap.h: Remove.
 402         * include/profile/multiset.h: Remove.
 403         * include/profile/ordered_base.h: Remove.
 404         * include/profile/set: Remove.
 405         * include/profile/set.h: Remove.
 406         * include/profile/unordered_base.h: Remove.
 407         * include/profile/unordered_map: Remove.
 408         * include/profile/unordered_set: Remove.
 409         * include/profile/vector: Remove.
 410         * scripts/run_doxygen: Do not process profile mode headers.
 411         * testsuite/23_containers/array/element_access/60497.cc: Don't use
 412         profile mode type.
 413         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
 414         Remove dg-skip-if for profile mode.
 415         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
 416         preprocessor check for profile mode.
 417         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
 418         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
 419         for profile mode.
 420         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
 421         Likewise.
 422         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
 423         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
 424         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
 425         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
 426         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
 427         Likewise.
 428         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
 429         Likewise.
 430         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
 431         Likewise.
 432         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
 433         Likewise.
 434         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
 435         preprocessor check for profile mode.
 436         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
 437         Likewise.
 438         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
 439         Remove dg-skip-if for profile mode.
 440         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
 441         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
 442         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
 443         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
 444         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
 445         * testsuite/Makefile.am: Remove profile_flags variable and
 446         * testsuite/Makefile.am: Remove profile_flags variable and
 447         check-profile target.
 448         * testsuite/Makefile.in: Regenerate.
 449         * testsuite/ext/profile/all.cc: Remove.
 450         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
 451         * testsuite/ext/profile/profiler_algos.cc: Remove.
 452         * testsuite/ext/profile/replace_new.cc: Remove.
 453         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
 454         preprocessor check for profile mode.
 455         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
 456         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
 457         (check_v3_target_normal_mode): Do not check for profile mode macro.
 458         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
 459         profile mode.
 460         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
 461         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
 462         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
 463         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
 464         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
 465         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
 466         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
 467         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
 468         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
 469         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
 470
 471         Remove array_allocator extension, deprecated since 4.9.0
 472         * doc/xml/manual/allocator.xml: Remove documentation for
 473         array_allocator.
 474         * doc/xml/manual/evolution.xml: Document array_allocator removal.
 475         * doc/xml/manual/using.xml: Remove header from documentation.
 476         * include/Makefile.am: Remove <ext/array_allocator.h> header.
 477         * include/Makefile.in: Regenerate.
 478         * include/ext/array_allocator.h: Remove.
 479         * include/precompiled/extc++.h: Do not include removed header.
 480         * testsuite/ext/array_allocator/1.cc: Remove.
 481         * testsuite/ext/array_allocator/2.cc: Remove.
 482         * testsuite/ext/array_allocator/26875.cc: Remove.
 483         * testsuite/ext/array_allocator/3.cc: Remove.
 484         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
 485         * testsuite/ext/array_allocator/check_delete.cc: Remove.
 486         * testsuite/ext/array_allocator/check_new.cc: Remove.
 487         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
 488         * testsuite/ext/headers.cc: Do not include removed header.
 489
 490 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
 491
 492         * include/bits/stl_bvector.h
 493         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 494         Make hidden friend.
 495         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 496         Likewise.
 497         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 498         Likewise.
 499         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 500         Likewise.
 501         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 502         Likewise.
 503         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 504         Likewise.
 505         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
 506         Likewise.
 507         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
 508         copy elision.
 509         (_Bit_iterator::operator-(difference_type)): Likewise.
 510         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
 511         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
 512         NRVO copy elision.
 513         (_Bit_const_iterator::operator-(difference_type)): Likewise.
 514         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
 515
 516 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
 517
 518         PR libstdc++/81266
 519         * testsuite/util/thread/all.h: Do not use remove_pointer for
 520         std::thread::native_handle_type.
 521
 522         PR libstdc++/90397
 523         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
 524         (_Variant_storage<true, Types...>::_M_reset()))
 525         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
 526         (__get_storage): Likewise.
 527         (variant): Add noexcept to friend declarations for __get and
 528         __get_storage.
 529
 530         PR libstdc++/90388
 531         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
 532         Use _Require for constraints.
 533         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
 534         per the standard.
 535         (__uniq_ptr_hash): New base class with conditionally-disabled call
 536         operator.
 537         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
 538         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
 539         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
 540
 541         * include/bits/shared_ptr.h: Improve docs.
 542         * include/bits/shared_ptr_base.h: Likewise.
 543         * include/bits/stl_uninitialized.h: Likewise.
 544         * include/bits/unique_ptr.h: Likewise.
 545         * libsupc++/new: Likewise.
 546
 547 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
 548
 549         * include/bits/stl_deque.h
 550         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 551         Make hidden friend.
 552         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 553         Likewise.
 554         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 555         Likewise.
 556         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 557         Likewise.
 558         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 559         Likewise.
 560         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
 561         Likewise.
 562         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
 563         copy elision.
 564         (_Deque_iterator<>::operator-(difference_type)): Likewise.
 565
 566 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
 567
 568         PR libstdc++/90277
 569         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
 570         (test01): Reserve for number of insertions to avoid rehash during test.
 571         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
 572         (test01): Likewise.
 573         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
 574         (test01): Likewise.
 575         (test02): Likewise.
 576         (test03): Likewise.
 577
 578 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
 579
 580         * include/experimental/bits/fs_path.h: Improve docs.
 581         * include/experimental/bits/net.h: Fix wrong header name in comment.
 582         Do not document implementation details.
 583         * include/experimental/netfwd: Fix doxygen grouping.
 584
 585 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
 586
 587         * include/bits/stl_pair.h: Improve docs.
 588         * include/std/tuple: Likewise.
 589
 590         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
 591         inline namespace.
 592         * include/std/chrono: Improve docs.
 593         * include/std/ratio: Do not document implementation details.
 594         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
 595         line numbers.
 596         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
 597
 598         PR libstdc++/89102
 599         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
 600         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
 601         (__duration_common_type): New helper.
 602         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
 603         __duration_common_type.
 604         (__timepoint_common_type_wrapper): Replace with ...
 605         (__timepoint_common_type): New helper.
 606         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
 607         Use __time_point_common_type.
 608         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
 609         (__common_type_impl): If either argument is transformed by decay,
 610         use the common_type of the decayed types.
 611         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
 612         decayed, use __do_common_type_impl to get the common_type.
 613         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
 614         (__do_member_type_wrapper, __member_type_wrapper)
 615         (__expanded_common_type_wrapper): Remove.
 616         (__common_type_pack, __common_type_fold): New helpers.
 617         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
 618         __member_type_wrapper and __expanded_common_type_wrapper.
 619         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
 620         Test zero-length template argument list.
 621         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
 622         Test single argument cases and argument types that should decay.
 623         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
 624         Adjust expected error.
 625         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
 626         dg-error lineno.
 627         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
 628         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
 629         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
 630
 631         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
 632
 633 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
 634
 635         Make allocator propagation more consistent for
 636         operator+(basic_string) (P1165R1)
 637         * include/bits/basic_string.h
 638         (operator+(basic_string&&, basic_string&&): Changed resulting
 639         allocator to always be the one from the first parameter.
 640         * include/bits/basic_string.tcc
 641         (operator+(const _CharT*, const basic_string&)): Changed
 642         resulting allocator to be SOCCC on the second parameter's allocator.
 643         (operator+(_CharT, const basic_string&)): Likewise.
 644         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
 645         New.
 646         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
 647         New.
 648
 649 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
 650
 651         * include/bits/regex.h: Improve docs.
 652         * include/bits/regex.tcc: Do not document implementation details.
 653
 654         * testsuite/19_diagnostics/error_code/hash.cc: New test.
 655
 656 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
 657
 658         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
 659         Add type printer for container types in std::__debug namespace.
 660         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
 661         (gdb-tests): Use distinct parameters for the type of test and use of
 662         regex.
 663         (gdb-test): Check for regex test even if 'whatis' test.
 664         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
 665         mode.
 666         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
 667         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
 668         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
 669         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
 670         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
 671         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
 672         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
 673
 674 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
 675
 676         * include/std/system_error (error_category): Fix comment.
 677
 678         PR libstdc++/90299
 679         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
 680         argument is an empty path.
 681         (absolute(const path&, error_code&)): Use invalid_argument as error
 682         code instead of no_such_file_or_directory.
 683         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
 684         of non-existent paths and empty paths with both overloads of absolute.
 685
 686         * include/std/system_error (error_category, error_code)
 687         (error_condition): Improve docs.
 688         * libsupc++/exception: Add missing @addtogroup Doxygen command.
 689         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
 690         to class documentation. Suppress documentation for implementation
 691         details.
 692         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
 693         Suppress documentation for implementation details.
 694
 695         * include/std/system_error (error_code): Remove friend declaration
 696         for hash<error_code>.
 697         (hash<error_code>::operator()): Use public member functions to access
 698         value and category.
 699         (hash<error_condition>::operator()): Use address of category, not
 700         its object representation.
 701         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
 702         Use public member functions to access value and category.
 703         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
 704
 705 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
 706
 707         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
 708         * include/bits/hashtable_policy.h
 709         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
 710         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
 711         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
 712         smaller than input value rather than always greater. Preserve
 713         _M_next_resize if called with 0 input. Use __builtin_floorl.
 714         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
 715         elements + number of insertions is greater than _M_next_resize. Start
 716         with 11 buckets if not told otherwise. Use __builtin_floorl.
 717         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
 718         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
 719         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
 720         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
 721         told otherwise. Use __builtin_floorl.
 722         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
 723         to also validate _Power2_rehash_policy.
 724         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
 725         Adapt.
 726
 727 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
 728
 729         PR libstdc++/61761
 730         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
 731         std::copysign.
 732
 733         PR libstdc++/52119
 734         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
 735         overflow warning with -Wpedantic -Wsystem-headers.
 736
 737 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
 738
 739         PR libstdc++/90314
 740         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
 741         * include/bits/move.h (swap): Remove extra parentheses.
 742
 743         * include/experimental/bits/lfts_config.h: Improve doc markup.
 744         * include/experimental/optional: Improve docs.
 745         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
 746         (__constexpr_addressof): Remove.
 747         (optional::operator->()): Use std::__addressof().
 748         * include/std/optional (optional::operator->()): Adjust whitespace.
 749         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
 750         that operator-> is still constexpr with overloaded operator&. Change
 751         to compile-only test.
 752         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
 753         compile-only test.
 754
 755         * include/bits/shared_ptr.h: Improve docs.
 756         * include/bits/shared_ptr_atomic.h: Likewise.
 757         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
 758
 759         * include/bits/basic_string.h: Fix iterator/index confusion in
 760         Doxygen comments.
 761         * include/bits/range_access.h: Fix Doxygen warnings.
 762         * include/bits/refwrap.h: Do not document implementation details.
 763         (ref, cref): Group docs with reference_wrapper.
 764         * include/std/fstream: Fix Doxygen markup.
 765         * libsupc++/initializer_list (begin, end): Group docs with
 766         initializer_list.
 767
 768         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
 769
 770         * include/bits/unique_lock.h: Fix/improve doxygen markup.
 771         * include/std/mutex: Likewise.
 772         * include/std/shared_mutex: Likewise.
 773
 774         * include/bits/fs_dir.h: Fix/improve doxygen markup.
 775         * include/bits/fs_fwd.h: Likewise.
 776         * include/bits/fs_ops.h: Likewise.
 777         * include/bits/fs_path.h: Likewise.
 778         * include/std/filesystem: Likewise.
 779
 780         * include/experimental/bits/net.h: Fix/improve doxygen markup.
 781         * include/experimental/buffer: Likewise.
 782         * include/experimental/executor: Likewise.
 783         * include/experimental/internet: Likewise.
 784         * include/experimental/io_context: Likewise.
 785         * include/experimental/net: Likewise.
 786         * include/experimental/netfwd: Likewise.
 787         * include/experimental/socket: Likewise.
 788         * include/experimental/timer: Likewise.
 789
 790         * doc/doxygen/doxygroups.cc: Move description of experimental group
 791         here.
 792         * include/experimental/algorithm: Add to libfund-ts doc group.
 793         * include/experimental/any: Likewise. Do not document implementation
 794         details.
 795         * include/experimental/array: Add to libfund-ts doc group.
 796         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
 797         for Library Fundamentals.
 798         * include/experimental/chrono: Add to libfund-ts doc group.
 799         * include/experimental/deque: Likewise.
 800         * include/experimental/forward_list: Likewise.
 801         * include/experimental/functional: Likewise.
 802         * include/experimental/iterator: Likewise.
 803         * include/experimental/list: Likewise.
 804         * include/experimental/map: Likewise.
 805         * include/experimental/memory: Likewise.
 806         * include/experimental/memory_resource: Likewise. Improve docs.
 807         details.
 808         * include/experimental/numeric: Add to libfund-ts doc group.
 809         * include/experimental/optional: Likewise.
 810         * include/experimental/propagate_const: Likewise.
 811         * include/experimental/random: Likewise.
 812         * include/experimental/ratio: Likewise.
 813         * include/experimental/regex: Likewise.
 814         * include/experimental/set: Likewise.
 815         * include/experimental/source_location: Likewise.
 816         * include/experimental/string: Likewise.
 817         * include/experimental/string_view: Likewise.
 818         * include/experimental/system_error: Likewise.
 819         * include/experimental/tuple: Likewise.
 820         * include/experimental/type_traits: Likewise.
 821         * include/experimental/unordered_map: Likewise.
 822         * include/experimental/unordered_set: Likewise.
 823         * include/experimental/utility: Likewise.
 824         * include/experimental/vector: Likewise.
 825         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
 826         * testsuite/experimental/array/neg.cc: Adjust dg-error.
 827         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
 828         Likewise.
 829         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
 830         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
 831         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
 832         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
 833         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
 834
 835         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
 836         * include/experimental/bits/fs_fwd.h: Improve docs.
 837         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
 838         * include/experimental/bits/fs_path.h: Likewise.
 839         (path, filesystem_error, u8path): Improve docs.
 840         * include/experimental/filesystem: Link to docs for TS.
 841
 842         * config/allocator/new_allocator_base.h (__allocator_base): Add
 843         workaround for Doxygen bug #6945.
 844         * include/std/memory: Improve docs. Define group for pointer safety.
 845         * include/std/scoped_allocator: Improve docs. Use "undocumented"
 846         conditional to suppress documentation for implementation details.
 847
 848         * include/bits/specfun.h: Improve docs.
 849         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
 850         and namespaces.
 851
 852         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
 853         (std::experimental): Add docs.
 854         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
 855         namespace to nothing when generating docs.
 856         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
 857         * include/std/chrono (std::chrono): Likewise.
 858         * include/std/functional (std::placeholders): Likewise.
 859         * include/std/thread (std::this_thread): Likewise.
 860
 861         * include/parallel/settings.h: Fix Doxygen markup.
 862
 863         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
 864         anything unless PB_DS_CLASS_C_DEC is defined.
 865         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
 866         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
 867         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
 868         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
 869         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
 870         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
 871         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
 872         Likewise.
 873         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
 874         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
 875         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
 876         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
 877         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
 878         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
 879         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
 880         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
 881         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
 882         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
 883         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
 884         Likewise.
 885         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
 886         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
 887         Likewise.
 888         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
 889         Likewise.
 890
 891         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
 892         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
 893         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
 894         Doxygen expands.
 895
 896 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 897
 898         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
 899         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
 900         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
 901         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
 902         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
 903         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
 904         Likewise.
 905         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
 906         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
 907         Likewise.
 908
 909 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
 910
 911         PR libstdc++/61761
 912         * include/std/complex (__complex_proj): Return parameter unchanged.
 913         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
 914         floating-point types to take std::complex arguments.
 915         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
 916         floating-point types.
 917         * testsuite/26_numerics/complex/proj.cc: New test.
 918
 919 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
 920
 921         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
 922         to _Lock_policyE[012].
 923         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 924
 925 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
 926
 927         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
 928         macros accidentally left in.
 929         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
 930         unnecessary -lstdc++fs option. Fix test for mingw.
 931         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
 932         Fix test for mingw.
 933
 934 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
 935
 936         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 937
 938 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
 939
 940         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
 941
 942         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
 943         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
 944
 945         PR libstdc++/71312
 946         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
 947
 948         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
 949         attribute.
 950
 951         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
 952         class template and partial specialization.
 953
 954         PR libstdc++/87982
 955         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
 956         an integral type.
 957         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
 958         functions to convert a value to an integral type.
 959         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
 960         (fill_n): Convert _Size parameter to an integral type.
 961         * testsuite/25_algorithms/fill_n/87982.cc: New test.
 962         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
 963         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
 964         * testsuite/25_algorithms/generate_n/87982.cc: New test.
 965         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
 966         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
 967
 968 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
 969
 970         Adding noexcept-specification on tuple constructors (LWG 2899)
 971         * libstdc++-v3/include/std/tuple:
 972         (tuple()): Add noexcept-specification.
 973         (tuple(const _Elements&...)): Likewise
 974         (tuple(_UElements&&...)): Likewise
 975         (tuple(const tuple<_UElements...>&)): Likewise
 976         (tuple(tuple<_UElements...>&&)): Likewise
 977         (tuple(const _T1&, const _T2&)): Likewise
 978         (tuple(_U1&&, _U2&&)): Likewise
 979         (tuple(const tuple<_U1, _U2>&): Likewise
 980         (tuple(tuple<_U1, _U2>&&): Likewise
 981         (tuple(const pair<_U1, _U2>&): Likewise
 982         (tuple(pair<_U1, _U2>&&): Likewise
 983         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
 984
 985 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
 986
 987         PR libstdc++/87106
 988         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
 989         arguments with __restrict.
 990
 991 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
 992
 993         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
 994
 995 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
 996
 997         * include/experimental/bits/fs_path.h
 998         (path::_S_convert_loc<_InputIterator>): Create const std::string to
 999         avoid redundant call to _S_convert_loc with non-const pointers.
1000
1001         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
1002         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
1003         * testsuite/21_strings/basic_string/hash/hash.cc
1004         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
1005         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
1006         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
1007
1008         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
1009         wstring::_M_replace_dispatch with more specific patterns.
1010         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
1011         Create const std::string to avoid redundant call to _S_convert_loc
1012         with non-const pointers.
1013         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
1014         avoid unnecessary basic_string::assign instantiations.
1015
1016         * include/std/memory (__uses_alloc_args): Add string-literal to
1017         static_assert, to match the one in __uses_alloc.
1018         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
1019         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
1020         for recursive uses-allocator construction of nested pairs.
1021         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
1022         comment.
1023
1024 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
1025
1026         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
1027         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
1028         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
1029         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
1030
1031         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1032         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1033         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
1034         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1035         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1036         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1037         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1038
1039 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
1040
1041         PR libstdc++/90239
1042         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
1043         * include/std/scoped_allocator [__cplusplus > 201703L]
1044         (scoped_allocator_adaptor::construct): Define in terms of
1045         uses_allocator_construction_args, as per P0591R4.
1046         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
1047         * testsuite/util/testsuite_allocator.h: Remove name of unused
1048         parameter.
1049
1050 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
1051
1052         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
1053         * doc/html/*: Regenerate.
1054
1055         * include/bits/fs_path.h (operator<, operator<=, operator>)
1056         (operator>=, operator==, operator!=): Make hidden friends, as per
1057         LWG 3065.
1058         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
1059         string type in test.
1060         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
1061
1062         * include/std/any (any::any(ValueType&&)): Use __and_v.
1063         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
1064         Likewise.
1065
1066         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
1067         as per P0777R1.
1068         * include/std/type_traits (__result_of_memfun): Use remove_reference
1069         instead of __remove_cvref_t and remove redundant is_same check.
1070         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
1071
1072         * include/experimental/string_view (basic_string_view::pointer)
1073         (basic_string_view::reference): Fix to refer to non-const value_type.
1074         * include/bits/basic_string.h (basic_string): Use __sv_check and
1075         __sv_limit instead of basic_string_view::_M_check and
1076         basic_string_view::_M_limit.
1077         * include/std/string_view (__sv_check, __sv_limit): New
1078         helper functions to replace basic_string_view::_M_check and
1079         basic_string_view::_M_limit.
1080         (basic_string_view): Add static assertions to enforce ill-formed
1081         requirement for traits_type::char_type from P1148R0, and to enforce
1082         required properties of char-like types.
1083         (basic_string_view::pointer, basic_string_view::reference): Fix to
1084         refer to non-const value_type.
1085         (basic_string_view::operator[], basic_string_view::at)
1086         (basic_string_view::front, basic_string_view::back)
1087         (basic_string_view::data): Use const_reference and const_pointer
1088         typedefs for return types.
1089         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
1090         (hash<wstring_view>): Fix argument_type typedef.
1091         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
1092         char/1.cc: Fix expected return type of basic_string_view::data().
1093         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
1094         wchar_t/1.cc: Likewise.
1095         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
1096         char/1.cc: Likewise.
1097         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
1098         wchar_t/1.cc: Likewise.
1099         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
1100         New test.
1101         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
1102         Check reference and pointer typedefs.
1103         * testsuite/experimental/string_view/requirements/typedefs.cc:
1104         Likewise.
1105         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
1106         Fix expected return type of basic_string_view::data().
1107         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
1108         1.cc: Likewise.
1109         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
1110         Likewise.
1111         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
1112         1.cc: Likewise.
1113
1114         PR libstdc++/90220
1115         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
1116         Avoid a runtime check for types that can never be stored in std::any.
1117         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
1118         array types.
1119
1120         PR libstdc++/90220 (partial)
1121         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
1122         not attempt ill-formed static_cast to pointers to non-object types.
1123         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
1124         function types.
1125
1126         * testsuite/20_util/variant/run.cc: Catch exception by reference to
1127         prevent -Wcatch-value warning.
1128
1129         * include/std/variant (__variant_construct): Use template parameter
1130         type instead of equivalent decltype-specifier.
1131         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
1132         Replace forward with move.
1133         (_Move_ctor_base<false, Types...>::_M_destructive_move)
1134         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
1135         (_Move_ctor_base<true, Types...>::_M_destructive_move)
1136         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
1137         index after construction succeeds.
1138         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
1139         if-constexpr checks that are always true. Use __remove_cvref_t instead
1140         of remove_reference so that is_nothrow_move_constructible check
1141         doesn't use a const rvalue parameter. In the potentially-throwing case
1142         construct a temporary and move assign it, as per LWG 2904.
1143         (_Move_assign_base<false, Types...>::operator=): Remove redundant
1144         if-constexpr checks that are always true. Use emplace as per LWG 2904.
1145         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
1146         construct a temporary and move assign from it, as per LWG 2904.
1147         * testsuite/20_util/variant/exception_safety.cc: Check that
1148         assignment operators have strong exception safety guarantee.
1149
1150 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
1151
1152         Document PSTL linker flags
1153
1154         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
1155
1156 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
1157
1158         * include/std/variant (__detail::__variant::_Traits): Make
1159         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
1160         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
1161         P0602R4.
1162         (__detail::__variant::_Copy_assign_alias): Only depend on
1163         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
1164         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
1165         move assignment operators.
1166
1167         PR libstdc++/90165
1168         * include/std/variant (variant::__not_self): New helper for the
1169         is_same_v<remove_cvref_t<T>, variant>==false constraints.
1170         (variant::__to_type_impl): Remove.
1171         (variant::__to_type): Add default argument to check pack size, instead
1172         of using __to_type_impl.
1173         (variant::__accepted_type): Add default argument using __not_self.
1174         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
1175         for variant(T&&) constructor constraint.
1176         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
1177         Extract __accepted_type into a named template parameter for reuse in
1178         other constraints and in the exception specification.
1179         (variant::variant(in_place_type_t<T>, Args&&...))
1180         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
1181         (variant::variant(in_place_index_t<T>, Args&&...))
1182         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
1183         (variant::operator=T&&)): Remove redundant && from trait arguments.
1184         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
1185         isn't used for in_place_type or in_place_index arguments.
1186
1187         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
1188         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
1189         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
1190
1191 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
1192             Bernd Edlinger  <bernd.edlinger@hotmail.de>
1193             Jakub Jelinek  <jakub@redhat.com>
1194
1195         PR target/89093
1196         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
1197         general-regs-only target attribute for ARM.
1198
1199 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
1200
1201         PR libstdc++/87431
1202         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
1203         specialization also depend on is_nothrow_move_constructible.
1204         * include/std/variant (__detail::__variant::__never_valueless()):
1205         Only true if the variant would have a move assignment operator.
1206         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
1207         Check __never_valueless<T...>().
1208         (variant::emplace): Only perform non-throwing move assignments
1209         for never-valueless alternatives if the variant has a move assignment
1210         operator.
1211         * testsuite/20_util/variant/compile.cc: Check that never-valueless
1212         types can be emplaced into non-assignable variants.
1213         * testsuite/20_util/variant/run.cc: Check that never-valueless types
1214         don't get copied when emplaced into non-assignable variants.
1215
1216         * include/std/variant (__detail::__variant::__ref_cast): Remove
1217         unused function.
1218         (__detail::__variant::_Uninitialized::_M_get)
1219         (__detail::__variant::__get)
1220         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
1221
1222 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
1223
1224         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
1225         to Darwin10.
1226         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
1227         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
1228         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
1229         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
1230
1231 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
1232
1233         Delegate PSTL configuration to pstl/pstl_config.h
1234
1235         * include/bits/c++config: Remove explicit PSTL configuration
1236         macros and use definitions from <pstl/pstl_config.h>.
1237
1238 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
1239
1240         Cleanup algorithm implementations
1241         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
1242         execution policy.
1243         (mismatch): Forward execution policy.
1244         (equal): Qualify call to std::equal().
1245         (partial_sort): Forward execution policy.
1246         (inplace_merge): Forward execution policy.
1247
1248 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
1249
1250         Improve implementation of parallel equal()
1251         * include/pstl/algorithm_impl.h
1252         (__internal::__brick_equal): use "4 iterator" version of
1253         std::equal().
1254         (__internal::__brick_equal): use simd for random access
1255         iterators on unsequenced execution policies.
1256         (__internal::__pattern_equal): add "4 iterator" version
1257         (__internal::__pattern_equal): dispatch to simd __brick_equal
1258         for vector-only execution policies.
1259         (__internal::__pattern_equal): dispatch to __parallel_or for
1260         parallel execution policies.
1261         * include/pstl/glue_algorithm_impl.h
1262         (std::equal): dispatch to "4 iterator" version of
1263         __internal::__pattern_equal().
1264
1265 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
1266
1267         PR libstdc++/90105
1268         * include/bits/forward_list.h (operator==): Do not use operator!= to
1269         compare elements.
1270         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
1271         earlier in the list, so that sort is stable.
1272         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
1273         * testsuite/23_containers/forward_list/comparable.cc: Test with
1274         types that meet the minimum EqualityComparable and LessThanComparable
1275         requirements. Remove irrelevant comment.
1276
1277         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
1278         Do not depend on whether all alternative types are move constructible.
1279         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
1280         from the operand when deciding whether to perform the assignment.
1281         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
1282         with deleted move constructor and deleted move assignment operator.
1283         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
1284         behaviour of variants with DeletedMoves as an alternative.
1285         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
1286         (move_ctor, move_assign): Check that moving a variant with a
1287         DeletedMoves alternative falls back to copying instead of moving.
1288
1289         * testsuite/20_util/variant/compile.cc: Remove empty string literals
1290         from static_assert declarations.
1291
1292         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
1293         actually match its name.
1294         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
1295         (test_swap()): Fix result for MoveCtorOnly and check
1296         MoveCtorAndSwapOnly.
1297
1298         * include/std/optional (optional::value_or(U&&) &&): Add missing
1299         constexpr specifier.
1300         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
1301         for disengaged optionals and rvalue optionals.
1302         * testsuite/20_util/optional/observers/4.cc: Likewise.
1303
1304 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
1305
1306         * include/pstl/algorithm_impl.h: Uglify identfiers.
1307         * include/pstl/numeric_impl.h:  Uglify identfiers.
1308         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
1309
1310 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
1311
1312         * include/bits/c++config:
1313         Add definition for __PSTL_ASSERT.
1314         Add definition for __PSTL_ASSERT_MSG.
1315         * include/pstl/algorithm_impl.h: Replace use of assert().
1316         * include/pstl/numeric_impl.h: Replace use of assert().
1317         * include/pstl/parallel_backend_tbb.h:
1318         Replace use of assert().
1319         Replace use of __TBB_ASSERT().
1320         * include/pstl/parallel_backend_utils.h: Replace use of assert().
1321
1322 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
1323
1324         PR libstdc++/90046
1325         * src/c++17/memory_resource.cc
1326         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
1327         needed to allow placing a _Chunk at the end of the buffer.
1328         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
1329
1330 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
1331
1332         * doc/xml/faq.xml: Add information about emergency EH pool.
1333         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
1334         Move outdated information on mt_allocator to a separate section.
1335         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
1336         doesn't affect the default allocator.
1337
1338         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
1339         typo.
1340
1341         PR libstdc++/89851
1342         * testsuite/20_util/variant/89851.cc: New test.
1343
1344 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
1345
1346         * include/std/variant: Adjust whitespace. Add comments.
1347         (_Multi_array): Leave primary template undefined.
1348         (_Multi_array<_Tp>): Define partial specialization for base case of
1349         recursion.
1350         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
1351         which is always a reference.
1352         (__gen_vtable::_S_apply()): Remove function, inline body into
1353         default member initializer.
1354         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
1355
1356         * include/std/variant (__variant_idx_cookie): Add member type.
1357         (__visitor_result_type): Remove.
1358         (__do_visit): Use invoke_result instead of __visitor_result_type.
1359         * testsuite/20_util/variant/visit.cc: New test.
1360
1361         PR libstdc++/90008
1362         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
1363         unused capture.
1364         * testsuite/20_util/variant/90008.cc: New test.
1365
1366 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
1367
1368         * include/pstl/algorithm_impl.h: Add namespace qualification.
1369         * include/pstl/execution_defs.h: Add namespace qualification.
1370         * include/pstl/execution_impl.h: Add namespace qualification.
1371         * include/pstl/numeric_impl.h: Add namespace qualification.
1372         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
1373         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
1374         * include/pstl/parallel_backend_utils.h: Include <cassert>.
1375
1376 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
1377
1378         Fix visit<R> for variant.
1379         * include/std/variant (__do_visit): Add a template parameter
1380         for enforcing same return types for visit.
1381         (__gen_vtable_impl): Likewise.
1382         (_S_apply_single_alt): Adjust.
1383         (__visit_invoke_impl): New. Handle casting to void.
1384         (__do_visit_invoke): New. Enforces same return types.
1385         (__do_visit_invoke_r): New. Converts return types.
1386         (__visit_invoke): Adjust.
1387         (__gen_vtable):  Add a template parameter for enforcing
1388         same return types for visit.
1389         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
1390         different return types.
1391         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
1392         visitors with different return types don't accidentally
1393         compile with regular visitation.
1394
1395 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
1396
1397         * testsuite/27_io/filesystem/iterators/caching.cc: Add
1398         dg-require-filesystem-ts.
1399
1400 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
1401
1402         * doc/xml/manual/status_cxx2020.xml: Update status.
1403         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
1404         * testsuite/20_util/variant/visit_r.cc: New test.
1405
1406         * include/bits/fs_dir.h (directory_iterator::operator*)
1407         (directory_iterator::operator->): Add noexcept.
1408         (operator==, operator!=): Replace namespace-scope equality operators
1409         for directory iterators with hidden friends.
1410
1411         PR libstdc++/89986
1412         * config/abi/pre/gnu.ver: Add missing exports.
1413         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
1414         increment member.
1415
1416         * config/abi/pre/gnu.ver: Export new symbols.
1417         * include/bits/fs_dir.h (recursive_directory_iterator::options())
1418         (recursive_directory_iterator::recursion_pending())
1419         (recursive_directory_iterator::disable_recursion_pending()): Remove
1420         inline definitions. Make noexcept.
1421         (recursive_directory_iterator::depth())
1422         (recursive_directory_iterator::operator*())
1423         (recursive_directory_iterator::operator->()): Make noexcept.
1424         (recursive_directory_iterator::_M_options)
1425         (recursive_directory_iterator::_M_pending): Remove data members.
1426         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
1427         (recursive_directory_iterator::recursive_directory_iterator): Remove
1428         ctor-initializer. Use new constructor for _Dir_stack.
1429         (recursive_directory_iterator::options())
1430         (recursive_directory_iterator::recursion_pending())
1431         (recursive_directory_iterator::disable_recursion_pending()): Add
1432         non-inline definitions.
1433         (recursive_directory_iterator::depth()): Make noexcept.
1434         (recursive_directory_iterator::increment(error_code&))
1435         (recursive_directory_iterator::pop(error_code&)): Adjust to new
1436         location of options and recursion_pending members.
1437         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
1438         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
1439         user-declared move constructor and assignment operator, to make the
1440         type move-only.
1441
1442         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
1443         d_type == DT_UNKNOWN immediately.
1444         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
1445         handling here.
1446         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
1447
1448         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
1449         assignment.
1450         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
1451         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
1452         assignment.
1453
1454         PR libstdc++/87431 (again)
1455         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
1456         Define partial specialization for basic_string.
1457         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
1458         shared_ptr and weak_ptr.
1459         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
1460         function.
1461         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
1462         vector.
1463         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
1464         unique_ptr.
1465         * include/debug/vector (_Never_valueless_alt): Likewise for debug
1466         vector.
1467         * include/std/any (_Never_valueless_alt): Define explicit
1468         specialization for any.
1469         * include/std/variant (_Never_valueless_alt): Define primary template.
1470         (__never_valueless): Use _Never_valueless_alt instead of
1471         is_trivially_copyable.
1472         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
1473         initializations to avoid try-catch overhead. Add special case for
1474         scalars produced by potentially-throwing conversions. Use
1475         _Never_valueless_alt instead of is_trivially_copyable for the
1476         remaining strong exception-safety cases.
1477         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
1478         * testsuite/20_util/variant/87431.cc: Run both test functions.
1479         * testsuite/20_util/variant/exception_safety.cc: New test.
1480         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
1481         so the variant becomes valueless.
1482
1483 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
1484
1485         PR libstdc++/85184
1486         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
1487         Remove assertions.
1488         (variant::emplace<_Tp>): Return result of emplace<N> directly.
1489
1490         * include/std/string (__hash_string_base): New class template defining
1491         operator() for hashing strings.
1492         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
1493         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
1494         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
1495         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
1496
1497 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
1498
1499         Use single-visitation in variant assignment and swap and relops.
1500         Also use indices instead of types when checking whether
1501         variants hold the same thing.
1502         * include/std/variant (__do_visit): Add a template parameter
1503         for index visitation, invoke with indices if index visitation
1504         is used.
1505         (__variant_idx_cookie): New.
1506         (__visit_with_index): Likewise.
1507         (_Copy_assign_base::operator=): Do single-visitation with
1508         an index visitor.
1509         (_Move_assign_base::operator=): Likewise.
1510         (_Extra_visit_slot_needed): Adjust.
1511         (__visit_invoke): Call with indices if it's an index visitor.
1512         (relops): Do single-visitation with an index visitor.
1513         (swap): Likewise.
1514         (__visitor_result_type): New.
1515
1516 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
1517
1518         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
1519
1520 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
1521
1522         Don't revisit a variant we are already visiting.
1523         * include/std/variant (__variant_construct_single): New.
1524         (__variant_construct): Use it.
1525         (_M_destructive_move): Likewise.
1526         (_M_destructive_copy): Likewise.
1527         (_Copy_assign_base::operator=): Adjust.
1528         (_Move_assign_base::operator=): Likewise.
1529         (swap): Likewise.
1530
1531 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
1532
1533         PR libstdc++/85965
1534         * include/bits/hashtable.h (_Hashtable): Move static assertions to
1535         destructor so they are not evaluated until the _Key type is complete.
1536         * include/bits/stl_tree.h (_Rb_tree): Likewise.
1537         * testsuite/23_containers/set/85965.cc: New test.
1538         * testsuite/23_containers/unordered_set/85965.cc: New test.
1539         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
1540         with regexp matching the corresponding _Rb_tree specialization.
1541         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
1542         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
1543         * testsuite/23_containers/set/48101_neg.cc: Likewise.
1544         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
1545         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
1546         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
1547         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
1548
1549 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
1550
1551         PR libstdc++/89825
1552         Fix based on a suggestion by Antony Polukhin.
1553         * include/std/variant (__never_valueless): New.
1554         (_M_valid): Use it.
1555         (_Extra_visit_slot_needed): New.
1556         (_Multi_array): Use it.
1557         (_S_apply_all_alts): Likewise.
1558
1559 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
1560
1561         PR libstdc++/89824
1562         Fix based on a suggestion by Antony Polukhin.
1563         * include/std/variant (__gen_vtable): Don't reserve an
1564         additional table slot, _Multi_array already does that.
1565
1566 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
1567
1568         PR libstdc++/89816
1569         Fix based on a suggestion by Antony Polukhin.
1570         * include/std/variant (__variant_construct): Capture a pointer
1571         to the storage and visit just one variant.
1572
1573 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
1574
1575         * doc/xml/manual/backwards_compatibility.xml: Remove link to
1576         Doxygen-generated pages with unstable URL.
1577         * doc/xml/manual/concurrency_extensions.xml: Likewise.
1578         * doc/xml/manual/extensions.xml: Likewise.
1579         * doc/xml/manual/parallel_mode.xml: Likewise.
1580         * doc/xml/manual/support.xml: Likewise.
1581
1582         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
1583         avoid -Wconversion warnings.
1584
1585 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
1586
1587         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
1588         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
1589         (allstamped): Add stamp-pstl.
1590         (install-headers): Add ptsl_builddir.
1591         * include/Makefile.in: Regenerate.
1592         * include/bits/c++config: Add pstl configuration.
1593         * include/pstl/LICENSE.txt: New file.
1594         * include/pstl/algorithm_fwd.h: New file.
1595         * include/pstl/algorithm_impl.h: New file.
1596         * include/pstl/execution_defs.h: New file.
1597         * include/pstl/execution_impl.h: New file.
1598         * include/pstl/glue_algorithm_defs.h: New file.
1599         * include/pstl/glue_algorithm_impl.h: New file.
1600         * include/pstl/glue_execution_defs.h: New file.
1601         * include/pstl/glue_memory_defs.h: New file.
1602         * include/pstl/glue_memory_impl.h: New file.
1603         * include/pstl/glue_numeric_defs.h: New file.
1604         * include/pstl/glue_numeric_impl.h: New file.
1605         * include/pstl/memory_impl.h: New file.
1606         * include/pstl/numeric_fwd.h: New file.
1607         * include/pstl/numeric_impl.h: New file.
1608         * include/pstl/parallel_backend.h: New file.
1609         * include/pstl/parallel_backend_tbb.h: New file.
1610         * include/pstl/parallel_backend_utils.h: New file.
1611         * include/pstl/parallel_impl.h: New file.
1612         * include/pstl/pstl_config.h: New file.
1613         * include/pstl/unseq_backend_simd.h: New file.
1614         * include/pstl/utils.h: New file.
1615         * include/std/algorithm: Include parallel algorithm implementations.
1616         * include/std/execution: New file.
1617         * include/std/memory: Include parallel algorithm implementations.
1618         * include/std/numeric: Include parallel algorithm implementations.
1619         * include/std/version: Add parallel algorithms feature test macro.
1620         * testsuite/util/pstl/pstl_test_config.h: New file.
1621         * testsuite/util/pstl/test_utils.h: New file.
1622         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
1623         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
1624         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
1625         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
1626         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
1627         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
1628         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
1629         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
1630         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
1631         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
1632         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
1633         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
1634         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
1635         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
1636         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
1637         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
1638         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
1639         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
1640         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
1641         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
1642         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
1643         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
1644         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
1645         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
1646         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
1647         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
1648         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
1649         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
1650         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
1651         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
1652         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
1653         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
1654         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
1655         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
1656         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
1657         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
1658         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
1659         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
1660         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
1661         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
1662         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
1663         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
1664         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
1665         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
1666         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
1667         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
1668         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
1669         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
1670         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
1671         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
1672         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
1673         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
1674         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
1675         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
1676         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
1677         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
1678         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
1679         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
1680         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
1681         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
1682         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
1683         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
1684         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
1685         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
1686         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
1687         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
1688         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
1689         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
1690         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
1691         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
1692         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
1693         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
1694         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
1695         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
1696         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
1697         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
1698         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
1699         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
1700         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
1701         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
1702         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
1703         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
1704         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
1705         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
1706         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
1707         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
1708         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
1709         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
1710         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
1711         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
1712         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
1713         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
1714         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
1715         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
1716         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
1717         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
1718         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
1719         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
1720         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
1721         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
1722         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
1723         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
1724         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
1725         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
1726         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
1727         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
1728
1729 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
1730
1731         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
1732         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
1733         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
1734         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
1735         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
1736         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
1737         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
1738         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
1739         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
1740         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
1741         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
1742         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
1743         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
1744         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
1745         when the special functions IS is enabled, not for C++17.
1746         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
1747         Replace with ...
1748         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
1749         without checks for special functions in C++17.
1750         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
1751         New test.
1752
1753         PR libstdc++/88066
1754         * include/backward/hash_map: Use <> for includes not "".
1755         * include/backward/hash_set: Likewise.
1756         * include/backward/strstream: Likewise.
1757         * include/tr1/bessel_function.tcc: Likewise.
1758         * include/tr1/exp_integral.tcc: Likewise.
1759         * include/tr1/legendre_function.tcc: Likewise.
1760         * include/tr1/modified_bessel_func.tcc: Likewise.
1761         * include/tr1/riemann_zeta.tcc: Likewise.
1762
1763 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
1764
1765         * doc/xml/manual/allocator.xml: Link to table documenting evolution
1766         of extension allocators.
1767         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
1768         Document new headers in 7.2, 8.1 and 9.1 releases.
1769         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
1770         * doc/html/*: Regenerate.
1771
1772 2019-03-12  John David Anglin  <dave.anglin@bell.net>
1773
1774         PR libstdc++/89461
1775         * testsuite/lib/libstdc++.exp: Locate libatomic.
1776         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
1777         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
1778         libatomic options.
1779         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
1780         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
1781         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
1782         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
1783
1784 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
1785
1786         PR libstdc++/89460
1787         * configure.ac: Check for sockatmark.
1788         * crossconfig.m4: Check for sockatmark.
1789         * config.h.in: Regenerate.
1790         * configure: Regenerate.
1791         * include/experimental/internet (address_v4::_S_hton): Rename
1792         overloaded functions to _S_hton_16 and _S_ntoh_16.
1793         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
1794         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
1795         * include/experimental/socket (basic_socket::at_mark): Check
1796         _GLIBCXX_HAVE_SOCKATMARK.
1797
1798         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
1799         const variables instead of macros.
1800
1801         PR libstdc++/89629
1802         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
1803         Use correct type for len_aligned.
1804         * testsuite/20_util/hash/89629.cc: New test.
1805
1806 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
1807
1808         PR libstdc++/89641
1809         * include/std/atomic (atomic<T>::store, atomic<T>::load,
1810         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
1811         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
1812         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
1813         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
1814         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
1815         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
1816         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
1817         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
1818         memory_order_seq_cst to int.
1819
1820 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
1821
1822         * doc/xml/manual/using.xml: Use link element instead of xref.
1823         * doc/html/*: Regenerate.
1824
1825         * include/bits/fs_path.h (path::format): Add fixed underlying type.
1826
1827 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
1828
1829         PR libstdc++/89477
1830         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
1831         parameters in deduction guides.
1832         * include/debug/multimap.h (multimap): Likewise.
1833         * include/debug/set.h (multimap): Likewise.
1834         * include/debug/multiset.h (multimap): Likewise.
1835         * include/debug/unordered_map (unordered_map): Likewise.
1836         (unordered_multimap): Likewise.
1837         * include/debug/unordered_set (unordered_set): Likewise.
1838         (unordered_multiset): Likewise.
1839
1840         PR libstdc++/89608
1841         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
1842         Invalidate all iterators in case of rehash.
1843         (unordered_multimap<>::_M_check_rehashed): Likewise.
1844         * include/debug/unordered_set
1845         (unordered_set<>::_M_check_rehashed): Likewise.
1846         (unordered_multiset<>::_M_check_rehashed): Likewise.
1847         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
1848
1849 2019-03-07  Andreas Schwab  <schwab@suse.de>
1850
1851         * config/abi/post/riscv64-linux-gnu: New directory.
1852         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
1853
1854 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
1855
1856         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
1857         compile test to run. Fix typo.
1858
1859         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
1860         * doc/html/*: Regenerate.
1861
1862         P0356R5 Simplified partial function application
1863         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
1864         helpers for bind_front.
1865         (bind_front, __cpp_lib_bind_front): Define.
1866         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
1867
1868 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
1869
1870         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
1871         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
1872         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
1873         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
1874
1875 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
1876
1877         PR libstdc++/86655 - std::assoc_legendre should not constrain
1878         the value of m (or x).
1879         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
1880         __sph_legendre): If degree > order Don't throw, return 0.
1881         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
1882         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
1883         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
1884         * testsuite/tr1/5_numerical_facilities/special_functions/
1885         02_assoc_legendre/pr86655.cc: New test.
1886         * testsuite/tr1/5_numerical_facilities/special_functions/
1887         22_sph_legendre/pr86655.cc: New test.
1888
1889 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
1890
1891         Rewrite variant.
1892         Also PR libstdc++/85517
1893         * include/std/variant (__do_visit): New.
1894         (__variant_cast): Likewise.
1895         (__variant_cookie): Likewise.
1896         (__erased_*): Remove.
1897         (_Variant_storage::_S_vtable): Likewise.
1898         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
1899         (_Variant_storage::__M_reset): Adjust.
1900         (__variant_construct): New.
1901         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
1902         __variant_construct.
1903         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
1904         (_Move_ctor_base::__M_destructive_copy): New.
1905         (_Move_ctor_base::__M_destructive_move): Adjust to use
1906         __variant_construct.
1907         (_Copy_assign_base::operator=): Adjust to use __do_visit.
1908         (_Copy_assign_alias): Adjust to check both copy assignment
1909         and copy construction for triviality.
1910         (_Move_assign_base::operator=): Adjust to use __do_visit.
1911         (_Multi_array): Add support for visitors that accept and return
1912         a __variant_cookie.
1913         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
1914         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
1915         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
1916         a __variant_cookie temporary for a variant that is valueless and..
1917         (__gen_vtable_impl::__visit_invoke): ..adjust here.
1918         (__gen_vtable::_Array_type): Conditionally make space for
1919         the __variant_cookie visitor case.
1920         (__variant_construct_by_index): New.
1921         (get_if): Adjust to use std::addressof.
1922         (relops): Adjust to use __do_visit.
1923         (variant): Add __variant_cast and __variant_construct_by_index
1924         as friends.
1925         (variant::emplace): Use _M_reset() and __variant_construct_by_index
1926         instead of self-destruction.
1927         (variant::swap): Adjust to use __do_visit.
1928         (visit): Reimplement in terms of __do_visit.
1929         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
1930         * testsuite/20_util/variant/compile.cc: Adjust.
1931         * testsuite/20_util/variant/run.cc: Likewise.
1932
1933 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
1934
1935         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
1936         constant.
1937         * testsuite/experimental/feat-char8_t.cc: Likewise.
1938
1939          * include/std/type_traits [C++20] (is_bounded_array)
1940          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
1941          Define.
1942          * testsuite/20_util/is_bounded_array/requirements/
1943          explicit_instantiation.cc: New test.
1944          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
1945          test.
1946          * testsuite/20_util/is_bounded_array/value.cc: New test.
1947          * testsuite/20_util/is_unbounded_array/requirements/
1948          explicit_instantiation.cc: New test.
1949          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
1950          * test.
1951          * testsuite/20_util/is_unbounded_array/value.cc: New test.
1952
1953         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
1954         Add constexpr.
1955         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
1956
1957 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
1958
1959         * include/c_compatibility/math.h [C++20] (lerp): Add using
1960         declaration.
1961         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
1962         (__lerp): Define function template to implement lerp.
1963         (lerp(float, float, float), lerp(double, double, double))
1964         (lerp(long double, long double, long double)): Define for C++20.
1965         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
1966         (midpoint(T, T), midpoint(T*, T*)): Define.
1967         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
1968         * testsuite/26_numerics/lerp.cc: New test.
1969         * testsuite/26_numerics/midpoint/floating.cc: New test.
1970         * testsuite/26_numerics/midpoint/integral.cc: New test.
1971         * testsuite/26_numerics/midpoint/pointer.cc: New test.
1972
1973 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
1974
1975         PR libstdc++/88996 Implement P0439R0
1976         Make std::memory_order a scoped enumeration.
1977         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
1978         add variables for the old enumerators.  Adjust calls.
1979         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
1980         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
1981
1982 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
1983
1984         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
1985         directive.
1986
1987         * include/std/memory_resource (polymorphic_allocator): Add default
1988         template argument for C++20.
1989         (polymorphic_allocator::allocate_bytes)
1990         (polymorphic_allocator::deallocate_bytes)
1991         (polymorphic_allocator::allocate_object)
1992         (polymorphic_allocator::deallocate_object)
1993         (polymorphic_allocator::new_object)
1994         (polymorphic_allocator::delete_object): New member functions for
1995         C++20.
1996         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
1997         test.
1998
1999 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
2000
2001         PR libstdc++/89562
2002         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
2003         mode for mingw.
2004
2005 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
2006
2007         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
2008         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
2009
2010         * include/std/memory (uses_allocator_construction_args): New set of
2011         overloaded functions.
2012         (make_obj_using_allocator, uninitialized_construct_using_allocator):
2013         New functions.
2014         * include/std/memory_resource (polymorphic_allocator::construct)
2015         [__cplusplus > 201703l]: Replace all overloads with a single function
2016         using uses_allocator_construction_args.
2017         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
2018         test.
2019         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
2020
2021 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
2022
2023         PR libstdc++/89466
2024         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
2025         stylesheet directories before check for xsltproc. Try to use
2026         xmlcatalog to find local stylesheet directory before trying hardcoded
2027         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
2028         check to look for the same stylesheet as doc/Makefile.am uses. Don't
2029         use xsltproc if xmlcatalog fails to find a local stylesheet.
2030         * configure.ac: Check for xmlcatalog.
2031         * Makefile.in: Regenerate.
2032         * configure: Likewise.
2033         * doc/Makefile.in: Likewise.
2034         * include/Makefile.in: Likewise.
2035         * libsupc++/Makefile.in: Likewise.
2036         * po/Makefile.in: Likewise.
2037         * python/Makefile.in: Likewise.
2038         * src/Makefile.in: Likewise.
2039         * src/c++11/Makefile.in: Likewise.
2040         * src/c++17/Makefile.in: Likewise.
2041         * src/c++98/Makefile.in: Likewise.
2042         * src/filesystem/Makefile.in: Likewise.
2043         * testsuite/Makefile.in: Likewise.
2044
2045 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
2046
2047         PR libstdc++/89477
2048         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
2049         container deduction guides.
2050         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
2051         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
2052         parameters in deduction guides.
2053         * include/bits/stl_multimap.h (multimap): Likewise.
2054         * include/bits/stl_multiset.h (multiset): Likewise.
2055         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
2056         * include/bits/stl_set.h (set): Likewise.
2057         * include/bits/stl_stack.h (stack): Likewise.
2058         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
2059         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
2060         constrain parameters in deduction guides.
2061         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
2062         Likewise.
2063         * testsuite/23_containers/map/cons/deduction.cc: Test additional
2064         deduction cases.
2065         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
2066         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
2067         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
2068         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
2069         Likewise.
2070         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
2071         Likewise.
2072         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
2073
2074         PR libstdc++/89416
2075         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
2076         to class template and partial specialization using void_t.
2077         (__is_copy_insertable, __is_move_insertable): Adjust base class.
2078
2079 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
2080
2081         PR libstdc++/89416
2082         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
2083         copy and move members public.
2084
2085 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
2086
2087         * include/std/type_traits (__underlying_type_impl): New helper to
2088         make underlying_type SFINAE-friendly.
2089         (underlying_type): Derive from __underlying_type_impl.
2090         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
2091         test.
2092
2093         PR libstdc++/89446
2094         * include/bits/char_traits.h (__constant_char_array): Check index is
2095         in range before dereferencing.
2096         (char_traits<char>::compare, char_traits<char>::find)
2097         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
2098         immediately if n is zero.
2099         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
2100         Remove workarounds for PR 67026.
2101         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
2102         New test.
2103         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
2104         New test.
2105
2106 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
2107
2108         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
2109         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
2110
2111 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
2112
2113         PR libstdc++/89402
2114         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
2115         type to std::size_t and argument to type to long double.
2116
2117 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
2118
2119         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
2120         * config/abi/post/sparc64-linux-gnu: New directory.
2121         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
2122         * config/abi/post/sparc64-linux-gnu/32: New directory.
2123         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
2124
2125 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
2126
2127         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
2128         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
2129         test.
2130
2131 2019-02-22  Tom Honermann  <tom@honermann.net>
2132
2133         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
2134         printers for u8string and u8string_view.
2135
2136 2019-02-22  Tom Honermann  <tom@honermann.net>
2137
2138         * testsuite/18_support/byte/ops.cc: Validate
2139         std::to_integer<char8_t>, std::to_integer<char16_t>, and
2140         std::to_integer<char32_t>.
2141         * testsuite/18_support/numeric_limits/dr559.cc: Validate
2142         std::numeric_limits<char8_t>.
2143         * testsuite/18_support/numeric_limits/lowest.cc: Validate
2144         std::numeric_limits<char8_t>::lowest().
2145         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
2146         std::numeric_limits<char8_t>::max_digits10.
2147         * testsuite/18_support/type_info/fundamental.cc: Validate
2148         typeinfo for char8_t.
2149         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
2150         std::from_chars with char8_t.
2151         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
2152         Validate explicit instantiation of std::hash<char8_t>.
2153         * testsuite/20_util/is_integral/value.cc: Validate
2154         std::is_integral<char8_t>.
2155         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
2156         Validate std::make_signed<char8_t>.
2157         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
2158         Validate u8string construction from char8_t sources.
2159         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
2160         std::pmr::u8string.
2161         * testsuite/21_strings/basic_string_view/operations/compare/
2162         char/70483.cc: Validate substr operations on u8string_view.
2163         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
2164         the u8string_view typedef is defined.
2165         * testsuite/21_strings/char_traits/requirements/
2166         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
2167         member functions.
2168         * testsuite/21_strings/char_traits/requirements/
2169         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
2170         constexpr member functions.
2171         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
2172         that the u8string typedef is defined.
2173         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
2174         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
2175         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
2176         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
2177         numbers.
2178         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2179         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
2180         Likewise.
2181         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
2182         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
2183         Validate std::atomic<char8_t>::is_always_lock_free
2184         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
2185         Update line numbers.
2186         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
2187         Likewise.
2188         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
2189         Likewise.
2190         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
2191         Validate std::experimental::pmr::u8string.
2192         * testsuite/experimental/string_view/typedefs.cc: Validate that the
2193         u8string_view typedef is defined.
2194         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
2195         char32_t to the typelists.
2196
2197 2019-02-22  Tom Honermann  <tom@honermann.net>
2198
2199         * include/ext/typelist.h: Constrain a partial specialization of
2200         typelist::detail::append_ to only match chain<T1,T2>.
2201
2202 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
2203
2204         PR libstdc++/89416
2205         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
2206         class template with class. Replace move and copy member types with
2207         member alias templates, so they are only instantiated when needed.
2208         (__is_copy_insertable, __is_move_insertable): Adjust base class.
2209         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
2210         test for C++11/14/17 as well.
2211         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
2212         test.
2213
2214 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
2215
2216         PR libstdc++/89402
2217         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
2218         _GLIBCXX_PURE to the alias declaration.
2219
2220 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
2221
2222         * testsuite/21_strings/basic_string/literals/types.cc
2223         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
2224         * testsuite/21_strings/basic_string/literals/values.cc
2225         [_GLIBCXX_USE_CHAR8_T]: Likewise.
2226         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
2227         potentially having different type.
2228         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
2229         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
2230         to char.
2231         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
2232         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
2233         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
2234         string literals only using basic character set.
2235         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
2236         u8 literals to char.
2237         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
2238         Test ATOMIC_CHAR8_T_LOCK_FREE.
2239         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
2240         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
2241         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
2242         * testsuite/experimental/string_view/literals/types.cc
2243         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
2244         literal.
2245         * testsuite/experimental/string_view/literals/values.cc
2246         [_GLIBCXX_USE_CHAR8_T]: Likewise.
2247
2248 2019-02-19  Tom Honermann  <tom@honermann.net>
2249
2250         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
2251         from char16_32_t.cc; validates numeric_limits<char8_t>.
2252         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
2253         test cloned from types.cc; validates operator""s for char8_t
2254         returns u8string.
2255         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
2256         test cloned from values.cc; validates construction and comparison
2257         of u8string values.
2258         * testsuite/21_strings/basic_string/requirements/
2259         /explicit_instantiation/char8_t/1.cc: New test cloned from
2260         char16_t/1.cc; validates explicit instantiation of
2261         basic_string<char8_t>.
2262         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
2263         New test cloned from types.cc; validates operator""sv for char8_t
2264         returns u8string_view.
2265         * testsuite/21_strings/basic_string_view/literals/
2266         values-char8_t.cc: New test cloned from values.cc; validates
2267         construction and comparison of u8string_view values.
2268         * testsuite/21_strings/basic_string_view/requirements/
2269         explicit_instantiation/char8_t/1.cc: New test cloned from
2270         char16_t/1.cc; validates explicit instantiation of
2271         basic_string_view<char8_t>.
2272         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
2273         New test cloned from char16_t/65049.cc; validates that
2274         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
2275         * testsuite/21_strings/char_traits/requirements/char8_t/
2276         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
2277         that char_traits<char8_t> member typedefs are present and correct.
2278         * testsuite/21_strings/char_traits/requirements/
2279         explicit_instantiation/char8_t/1.cc: New test cloned from
2280         char16_t/1.cc; validates explicit instantiation of
2281         char_traits<char8_t>.
2282         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
2283         from char16_t.cc: validates
2284         codecvt<char16_t, char8_t, mbstate_t>.
2285         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
2286         from char32_t.cc: validates
2287         codecvt<char32_t, char8_t, mbstate_t>.
2288         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
2289         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
2290         codecvt<char32_t, char8_t, std::mbstate_t>.
2291         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
2292         test cloned from string.cc; validates filesystem::path construction
2293         from char8_t input.
2294         * testsuite/experimental/feat-char8_t.cc: New test; validates that
2295         the __cpp_lib_char8_t feature test macro is defined with the
2296         correct value.
2297         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
2298         New test cloned from string.cc; validates filesystem::path
2299         construction from char8_t input.
2300         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
2301         test cloned from types.cc; validates operator""sv for char8_t
2302         returns u8string_view.
2303         * testsuite/experimental/string_view/literals/values-char8_t.cc:
2304         New test cloned from values.cc; validates construction and
2305         comparison of u8string_view values.
2306         * testsuite/experimental/string_view/requirements/
2307         explicit_instantiation/char8_t/1.cc: New test cloned from
2308         char16_t/1.cc; validates explicit instantiation of
2309         basic_string_view<char8_t>.
2310         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
2311         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
2312         enabled.
2313
2314 2019-02-19  Tom Honermann  <tom@honermann.net>
2315
2316         P0482R5 char8_t: Standard library support
2317         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
2318         typeinfo symbols for char8_t.
2319         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
2320         (GLIBCXX_3.4.26): Add symbols for specializations of
2321         numeric_limits and codecvt that involve char8_t.
2322         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
2323         * include/bits/atomic_base.h: Add atomic_char8_t.
2324         * include/bits/basic_string.h: Add std::hash<u8string> and
2325         operator""s(const char8_t*, size_t).
2326         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
2327         __cpp_lib_char8_t.
2328         * include/bits/char_traits.h: Add char_traits<char8_t>.
2329         * include/bits/codecvt.h: Add
2330         codecvt<char16_t, char8_t, mbstate_t>,
2331         codecvt<char32_t, char8_t, mbstate_t>,
2332         codecvt_byname<char16_t, char8_t, mbstate_t>, and
2333         codecvt_byname<char32_t, char8_t, mbstate_t>.
2334         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
2335         recognize char8_t as an integral type.
2336         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
2337         char8_t.
2338         (path::u8string): Return std::u8string when char8_t support is
2339         enabled.
2340         (path::generic_u8string): Likewise.
2341         (path::_S_convert): Handle conversion from char8_t input.
2342         (path::_S_str_convert): Likewise.
2343         * include/bits/functional_hash.h: Add hash<char8_t>.
2344         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
2345         char8_t.
2346         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
2347         for new char8_t specializations.
2348         * include/bits/localefwd.h: Add missing declarations of
2349         codecvt<char16_t, char, mbstate_t> and
2350         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
2351         codecvt<char16_t, char8_t, mbstate_t> and
2352         codecvt<char32_t, char8_t, mbstate_t>.
2353         * include/bits/postypes.h: Add u8streampos
2354         * include/bits/stringfwd.h: Add declarations of
2355         char_traits<char8_t> and u8string.
2356         * include/c_global/cstddef: Add __byte_operand<char8_t>.
2357         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
2358         Recognize char8_t.
2359         (path::u8string): Return std::u8string when char8_t support is
2360         enabled.
2361         (path::generic_u8string): Likewise.
2362         (path::_S_convert): Handle conversion from char8_t input.
2363         (path::_S_str_convert): Likewise.
2364         * include/experimental/string: Add u8string.
2365         * include/experimental/string_view: Add u8string_view,
2366         hash<experimental::u8string_view>, and
2367         operator""sv(const char8_t*, size_t).
2368         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
2369         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
2370         as a character type.
2371         * include/std/limits: Add numeric_limits<char8_t>.
2372         * include/std/string_view: Add u8string_view,
2373         hash<experimental::u8string_view>, and
2374         operator""sv(const char8_t*, size_t).
2375         * include/std/type_traits: Add __is_integral_helper<char8_t>,
2376         __make_unsigned<char8_t>, and __make_signed<char8_t>.
2377         * libsupc++/atomic_lockfree_defines.h: Define
2378         ATOMIC_CHAR8_T_LOCK_FREE.
2379         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
2380         codecvt.cc and limits.cc so that char8_t specializations of
2381         numeric_limits and codecvt and emitted.
2382         * src/c++11/Makefile.in: Likewise.
2383         * src/c++11/codecvt.cc: Define members of
2384         codecvt<char16_t, char8_t, mbstate_t>,
2385         codecvt<char32_t, char8_t, mbstate_t>,
2386         codecvt_byname<char16_t, char8_t, mbstate_t>, and
2387         codecvt_byname<char32_t, char8_t, mbstate_t>.
2388         * src/c++11/limits.cc: Define members of
2389         numeric_limits<char8_t>.
2390         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
2391         locale_init.cc and localename.cc.
2392         * src/c++98/Makefile.in: Likewise.
2393         * src/c++98/locale_init.cc: Add initialization for the
2394         codecvt<char16_t, char8_t, mbstate_t> and
2395         codecvt<char32_t, char8_t, mbstate_t> facets.
2396         * src/c++98/localename.cc: Likewise.
2397         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
2398
2399 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
2400
2401         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
2402         * 27_io/filesystem/operations/resize_file.cc: Likewise.
2403         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
2404
2405 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
2406
2407         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
2408         * doc/html/*: Regenerate.
2409
2410         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
2411         * doc/html/*: Regenerate.
2412
2413         * doc/xml/manual/intro.xml: Document LWG 2586 status.
2414         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
2415         allocator type in is_constructible checks.
2416         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
2417         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
2418         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
2419         problematic type from LWG 2586 discussion.
2420         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
2421         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
2422
2423         * configure.ac: Check for C11 timespec_get function.
2424         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
2425         (openbsd): Likewise
2426         * config.h.in: Regenerate.
2427         * configure: Regenerate.
2428         * include/c_global/ctime (timespec, timespec_get): Add to namespace
2429         std for C++17 and up.
2430
2431         * doc/xml/manual/intro.xml: Document LWG 2537 status.
2432         * include/bits/stl_queue.h
2433         (priority_queue(const Compare&, const Container&, const Alloc&))
2434         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
2435         make_heap.
2436         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
2437
2438         * doc/xml/manual/intro.xml: Document LWG 2566 status.
2439         * include/bits/stl_queue.h (queue, priority_queue): Add static
2440         assertions to enforce LWG 2566 requirement on value_type.
2441         * include/bits/stl_stack.h (stack): Likewise.
2442
2443         PR middle-end/89303
2444         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
2445
2446         * doc/xml/manual/intro.xml: Document LWG 2735 status.
2447         * include/bits/std_abs.h: Add comment about LWG 2735.
2448         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
2449
2450 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
2451
2452         PR libstdc++/89345
2453         * include/std/version [__cpp_impl_destroying_delete]
2454         (__cpp_lib_destroying_delete): Only define for C++2a and later.
2455         * libsupc++/new [__cpp_impl_destroying_delete]
2456         (__cpp_lib_destroying_delete): Likewise.
2457         (destroying_delete_t, destroying_delete): Likewise, but define even
2458         when __cpp_impl_destroying_delete is not defined.
2459         * testsuite/18_support/destroying_delete.cc: New test.
2460
2461 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
2462
2463         PR libstdc++/89023
2464         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
2465         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
2466         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
2467         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
2468
2469 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
2470
2471         PR libstdc++/71044
2472         * include/bits/fs_path.h (path::has_root_name)
2473         (path::has_root_directory, path::has_root_path)
2474         (path::has_relative_path, path::has_parent_path)
2475         (path::has_filename, path::has_stem, path::has_extension)
2476         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
2477         noexcept.
2478         * src/c++17/fs_path.cc (path::has_root_name)
2479         (path::has_root_directory, path::has_root_path)
2480         (path::has_relative_path, path::has_parent_path)
2481         (path::has_filename, path::_M_find_extension): Add noexcept.
2482
2483 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
2484
2485         PR libstdc++/89102 (partial)
2486         * include/std/type_traits (common_type<>): Define.
2487         (common_type<T>): Derive from common_type<T, T>.
2488         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
2489         Test zero-length template argument list.
2490         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
2491         Test additional single argument cases.
2492         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
2493         Adjust expected error.
2494
2495 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
2496
2497         PR libstdc++/89128
2498         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
2499         guides.
2500         * include/bits/stl_stack.h (stack): Likewise.
2501         * testsuite/23_containers/priority_queue/deduction.cc: New test.
2502         * testsuite/23_containers/queue/deduction.cc: New test.
2503         * testsuite/23_containers/stack/deduction.cc: New test.
2504
2505         PR libstdc++/89194
2506         * include/std/type_traits (__is_convertible_helper)
2507         (__is_convertible_helper<_From, _To, false>): Revert changes to
2508         support is_nothrow_convertible.
2509         (__is_nt_convertible_helper): New helper.
2510         (is_nothrow_convertible): Use __is_nt_convertible_helper.
2511
2512         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
2513         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
2514
2515         PR libstdc++/89130
2516         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
2517         __is_alloc_insertable_impl. Replace single type member with two
2518         members, one for each of copy and move insertable.
2519         (__is_move_insertable): New trait for internal use.
2520         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
2521         (vector::_S_nothrow_relocate(true_type)): New functions to
2522         conditionally check if __relocate_a can throw.
2523         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
2524         on __is_move_insertable.
2525         (vector::_S_do_relocate): New overloaded functions to conditionally
2526         call __relocate_a.
2527         (vector::_S_relocate): New function that dispatches to _S_do_relocate
2528         based on _S_use_relocate.
2529         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
2530         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
2531         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
2532
2533         PR libstdc++/89090
2534         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
2535         parameter unnamed. Add message to static assertion.
2536         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
2537         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
2538         in C++11 code.
2539
2540 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
2541
2542         PR libstdc++/87106
2543         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
2544         Rename...
2545         (__is_bitwise_relocatable): ... to this.
2546         (__relocate_a_1): Adapt.
2547         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
2548         (__is_bitwise_relocatable): ... to this.
2549
2550 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
2551
2552         PR libstdc++/89117
2553         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
2554         final component as well as from _M_pathname. Append the dot using
2555         operator+= instead of only to _M_pathname.
2556         (path::_M_find_extension): Reformat slightly.
2557         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
2558         Add more test cases.
2559
2560 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
2561
2562         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
2563
2564 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
2565
2566         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
2567         constexpr specifiers from arg and proj.
2568
2569         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
2570         __shared_ptr instantiations used by gcc4-compatible ABI.
2571
2572         * include/experimental/forward_list (experimental::erase): Qualify
2573         call to erase_if.
2574         * include/experimental/list (experimental::erase): Likewise.
2575         * include/std/forward_list (std::erase): Likewise.
2576         * include/std/list (std::erase): Likewise.
2577
2578         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
2579         C++2a.
2580         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
2581         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
2582         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
2583         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
2584         * testsuite/ext/array_allocator/26875.cc: Likewise.
2585         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
2586         * testsuite/util/replacement_memory_operators.h: Likewise.
2587         * testsuite/util/testsuite_allocator.h: Likewise.
2588
2589         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
2590         normal mode vector, even for debug mode.
2591         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
2592         Define alias template for normal mode vector.
2593
2594 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
2595
2596         PR libstdc++/68737
2597         * config/locale/generic/c_locale.h (__convert_from_v)
2598         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
2599         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
2600         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
2601         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
2602
2603 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
2604
2605         PR libstdc++/88840
2606         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
2607         data member with static member function _S_use_relocate().
2608         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
2609         (vector::_M_default_append): Use _S_use_relocate() instead of
2610         __use_relocate.
2611
2612         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
2613         sign of results.
2614
2615 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
2616
2617         PR libstdc++/88740
2618         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
2619         write to stderr instead of using printf.
2620
2621 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
2622
2623         PR libstdc++/86590
2624         * include/bits/char_traits.h (__constant_string_p,
2625         __constant_char_array_p): Use __builtin_is_constant_evaluated if
2626         available.
2627
2628 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
2629
2630         Implement C++20 P0600r1.
2631         * include/backward/hash_map: Add nodiscard attribute to empty.
2632         * include/backward/hash_set: Likewise.
2633         * backward/hashtable.h: Likewise.
2634         * include/bits/basic_string.h: Likewise.
2635         * include/bits/forward_list.h: Likewise.
2636         * include/bits/hashtable.h: Likewise.
2637         * include/bits/regex.h: Likewise.
2638         * include/bits/stl_deque.h: Likewise.
2639         * include/bits/stl_list.h: Likewise.
2640         * include/bits/stl_map.h: Likewise.
2641         * include/bits/stl_multimap.h: Likewise.
2642         * include/bits/stl_multiset.h: Likewise.
2643         * include/bits/stl_queue.h: Likewise.
2644         * include/bits/stl_set.h: Likewise.
2645         * include/bits/stl_stack.h: Likewise.
2646         * include/bits/stl_tree.h: Likewise.
2647         * include/bits/stl_vector.h: Likewise.
2648         * include/bits/unordered_map.h: Likewise.
2649         * include/bits/unordered_set.h: Likewise.
2650         * include/debug/array: Likewise.
2651         * include/experimental/any: Likewise.
2652         * include/experimental/bits/fs_path.h: Likewise.
2653         * include/experimental/internet: Likewise.
2654         * include/experimental/string_view: Likewise.
2655         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
2656         Likewise.
2657         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
2658         Likewise.
2659         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
2660         Likewise.
2661         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
2662         Likewise.
2663         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
2664         Likewise.
2665         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
2666         Likewise.
2667         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
2668         Likewise.
2669         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
2670         Likewise.
2671         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
2672         info_fn_imps.hpp: Likewise.
2673         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
2674         left_child_next_sibling_heap_.hpp: Likewise.
2675         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
2676         Likewise.
2677         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
2678         Likewise.
2679         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
2680         Likewise.
2681         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
2682         Likewise.
2683         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
2684         Likewise.
2685         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
2686         Likewise.
2687         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
2688         Likewise.
2689         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
2690         * include/ext/pb_ds/trie_policy.hpp: Likewise.
2691         * include/ext/rope: Likewise.
2692         * include/ext/slist: Likewise.
2693         * include/ext/vstring.h: Likewise.
2694         * include/profile/array: Likewise.
2695         * include/std/array: Likewise.
2696         * include/tr1/array: Likewise.
2697         * include/tr1/hashtable.h: Likewise.
2698         * include/tr1/regex: Likewise.
2699         * include/tr2/dynamic_bitset: Likewise.
2700         * include/bits/alloc_traits.h: Add nodiscard attribute to
2701         allocate.
2702         * include/experimental/memory_resource: Likewise.
2703         * include/ext/alloc_traits.h: Likewise.
2704         * include/ext/array_allocator.h: Likewise.
2705         * include/ext/bitmap_allocator.h: Likewise.
2706         * include/ext/debug_allocator.h: Likewise.
2707         * include/ext/extptr_allocator.h: Likewise.
2708         * include/ext/mt_allocator.h: Likewise.
2709         * include/ext/new_allocator.h: Likewise.
2710         * include/ext/pool_allocator.h: Likewise.
2711         * include/ext/throw_allocator.h: Likewise.
2712         * include/std/scoped_allocator: Likewise.
2713         * libsupc++/eh_alloc.cc: Likewise.
2714         * include/std/future: Add nodiscard attribute to async.
2715         * libsupc++/new: Add nodiscard attribute to new.
2716
2717 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
2718
2719         PR libstdc++/87514
2720         PR libstdc++/87520
2721         PR libstdc++/88782
2722         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
2723         * include/bits/shared_ptr.h
2724         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
2725         (allocate_shared): Change to use new tag type.
2726         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
2727         Declare new member function.
2728         (_Sp_alloc_shared_tag): Define new type.
2729         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
2730         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
2731         _Sp_make_shared_tag::_S_eq to check type_info.
2732         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
2733         Constrain to prevent being called with _Sp_alloc_shared_tag.
2734         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
2735         Replace constructor with ...
2736         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
2737         reference parameter so address of the new object can be returned to
2738         the caller. Obtain the allocator from the tag type.
2739         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
2740         constructor with ...
2741         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
2742         to the __shared_count constructor.
2743         (__allocate_shared): Change to use new tag type.
2744         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
2745
2746 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
2747
2748         * src/c++17/fs_ops.cc
2749         (equivalent(const path&, const path&, error_code&))
2750         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
2751         compare files instead of relying on incomplete info returned by stat.
2752
2753         PR libstdc++/88884
2754         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
2755         if the path is already absolute.
2756         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
2757         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
2758
2759         PR libstdc++/88881
2760         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
2761         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
2762         of filesystem::exists.
2763         (create_directories(const path&, error_code&)): Add assertions.
2764         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
2765         Add workaround for bug in _wstat for paths with trailing slash.
2766         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
2767         for expected behaviour on mingw.
2768         * testsuite/experimental/filesystem/operations/create_directories.cc:
2769         Likewise.
2770         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
2771         "TMP" instead of "TMPDIR" and clean environment before each test. Do
2772         not test permissions on mingw targets.
2773
2774 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
2775
2776         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
2777         constructors and open members taking wide strings. Fix patterns for
2778         filesystem::path members to match wstring_view parameters. Add
2779         exports for shared_ptr members used by directory iterators.
2780         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
2781         error code parameter if the file doesn't exist.
2782         * src/filesystem/ops.cc (remove(const path&, error_code&)):
2783         Likewise.
2784         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
2785         values for mingw targets, where "/" is not an absolute path. Do not
2786         test symlinks on mingw targets.
2787         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
2788         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
2789         on mingw targets.
2790         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
2791         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
2792         that each component of the path is created.
2793         * testsuite/experimental/filesystem/operations/create_directories.cc:
2794         Likewise.
2795         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
2796         permissions on mingw targets.
2797         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
2798         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
2799         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
2800         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
2801         mingw targets.
2802         * testsuite/experimental/filesystem/operations/permissions.cc:
2803         Likewise.
2804         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
2805         symlinks or permissions on mingw targets.
2806         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
2807         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
2808         symlinks on mingw targets.
2809         * testsuite/experimental/filesystem/operations/remove_all.cc:
2810         Likewise.
2811         * testsuite/27_io/filesystem/operations/status.cc: Do not test
2812         permissions on mingw targets.
2813         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
2814         test symlinks on mingw targets.
2815         * testsuite/experimental/filesystem/operations/space.cc: Fix test
2816         for mingw targets.
2817
2818 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
2819
2820         PR libstdc++/88738
2821         Warn about unused comparisons of shared_ptr/unique_ptr
2822         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
2823         * include/bits/shared_ptr.h: Use it for operator ==, !=,
2824         <, <=, >, >= for shared_ptr.
2825         * include/bits/unique_ptr.h: Likewise for unique_ptr.
2826
2827 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
2828
2829         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
2830         as 201611L, because P0497R0 changes are supported.
2831         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
2832
2833         * include/bits/erase_if.h [__cplusplus > 201703L]
2834         (__cpp_lib_erase_if): Only define for C++2a.
2835         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
2836         (__cpp_lib_null_iterators): Define.
2837         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
2838         (__cpp_lib_null_iterators): Define.
2839         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
2840
2841         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
2842         status.
2843         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
2844         Define.
2845         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
2846         changes are supported.
2847         * include/std/optional (__cpp_lib_optional): Likewise.
2848         * include/std/variant (__cpp_lib_variant): Likewise.
2849         * include/std/version [!__STRICT_ANSI__]
2850         (__cpp_lib_uncaught_exceptions): Define as long integer.
2851         [__cplusplus >= 201703L] (__cpp_lib_any)
2852         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
2853         (__cpp_lib_variant): Define for C++17.
2854         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
2855         as long integer.
2856         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
2857         integer.
2858
2859         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
2860
2861 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
2862
2863         PR libstdc++/88811
2864         PR libstdc++/83306
2865         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
2866         before second path.
2867         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
2868         test.
2869
2870 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
2871
2872         * doc/xml/manual/intro.xml: Include new section.
2873         * doc/xml/manual/status_cxx2017.xml: Document more
2874         implementation-defined properties of the library.
2875         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
2876         * doc/html/*: Regenerate.
2877
2878         * include/bits/refwrap.h [__cplusplus > 201703L]
2879         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
2880         (_Reference_wrapper_base_memfun): Do not define for C++2a.
2881         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
2882         for C++2a.
2883         (reference_wrapper::operator()): Add static assertion.
2884         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
2885
2886         * include/std/chrono (duration_values::zero(), duration_values::min())
2887         (duration_values::max()): Add noexcept.
2888         (duration::zero(), duration::min(), duration::max()): Likewise.
2889         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
2890         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
2891         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
2892
2893         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
2894
2895 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
2896
2897         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
2898         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
2899
2900 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
2901
2902         PR libstdc++/88802
2903         * include/bits/functional_hash.h (hash<nullptr_t>): Define
2904         specialization for C++17 (P0513R0, LWG 2817).
2905         * testsuite/20_util/hash/nullptr.cc: New test.
2906
2907         PR libstdc++/88125
2908         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
2909         pattern for std::basic_stringbuf::str().
2910
2911         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
2912         basic_ostream::operator<< patterns.
2913
2914 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
2915
2916         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
2917         test failures on targets with 32-bit time_t.
2918
2919         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
2920         * include/std/deque: Likewise.
2921         * include/std/forward_list: Likewise.
2922         * include/std/list: Likewise.
2923         * include/std/string: Likewise.
2924         * include/std/vector: Likewise.
2925         * include/std/version: Likewise.
2926         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
2927         * testsuite/23_containers/deque/erasure.cc: Likewise.
2928         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
2929         * testsuite/23_containers/list/erasure.cc: Likewise.
2930         * testsuite/23_containers/map/erasure.cc: Likewise.
2931         * testsuite/23_containers/set/erasure.cc: Likewise.
2932         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2933         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
2934         * testsuite/23_containers/vector/erasure.cc: Likewise.
2935
2936         * include/experimental/internet [AI_NUMERICSERV]
2937         (resolver_base::numeric_service): Define conditionally.
2938         * testsuite/experimental/net/internet/resolver/base.cc: Test it
2939         conditionally.
2940         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
2941         Likewise.
2942
2943 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
2944             Jonathan Wakely  <jwakely@redhat.com>
2945
2946         Implement LWG 2221
2947         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
2948         (GLIBCXX_3.4.26): Add new exports.
2949         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
2950         correct list of sources.
2951         * include/Makefile.in: Regenerate.
2952         * include/std/ostream (operator<<(nullptr_t)): New member function.
2953         * src/c++17/ostream-inst.cc: New file.
2954         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
2955         test.
2956
2957 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
2958
2959         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
2960         of the source file containing the caller.
2961         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
2962         directories created by test.
2963         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
2964         Likewise.
2965         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
2966         Likewise.
2967         * testsuite/experimental/filesystem/iterators/
2968         recursive_directory_iterator.cc: Likewise.
2969
2970 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
2971
2972         PR tree-optimization/88775
2973         * include/bits/stl_function.h (greater<_Tp*>::operator(),
2974         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
2975         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
2976         instead of __builtin_constant_p if available.  Don't bother with
2977         the pointer comparison in C++11 and earlier.
2978
2979 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
2980
2981         PR other/16615
2982
2983         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
2984         with "cannot".
2985
2986 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
2987
2988         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
2989         for filesystem::path. Give variables more distinctive names.
2990
2991         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
2992         member function to perform non-trivial assignment.
2993         (_Optional_payload_base::_M_move_assign): Likewise.
2994         (_Optional_payload<T, true, false, true>::operator=)
2995         (_Optional_payload<T, true, true, false>::operator=)
2996         (_Optional_payload<T, true, false, false>::operator=): Call
2997         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
2998
2999         PR libstdc++/88204
3000         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
3001         test std::complex<long double> if long double format is IBM128.
3002         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
3003         Likewise.
3004
3005 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
3006
3007         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
3008         for old std::unique_ptr layout.
3009         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
3010         to become valueless. Add filesystem::path tests.
3011
3012         PR libstdc++/87855
3013         * include/std/optional (_Optional_payload_base): New class template
3014         for common code hoisted from _Optional_payload specializations. Use
3015         a template for the union, to allow a partial specialization for
3016         types with non-trivial destructors. Add constructors for in-place
3017         initialization to the union.
3018         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
3019         to perform non-trivial copy construction, instead of relying on
3020         non-standard copy elision in a delegating constructor.
3021         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
3022         non-trivial move construction.
3023         (_Optional_payload): Derive from _Optional_payload_base and use it
3024         for everything except the non-trivial assignment operators, which are
3025         defined as needed.
3026         (_Optional_payload<false, C, M>): Derive from the specialization
3027         _Optional_payload<true, false, false> and add a destructor.
3028         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
3029         Forward to corresponding members of _Optional_payload.
3030         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
3031         Hoist common members from _Optional_base.
3032         (_Optional_base): Make all members and base class public.
3033         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
3034         _Optional_base_impl.
3035         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
3036         support for new std::optional layout.
3037         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
3038
3039         PR libstdc++/88066
3040         * include/bits/locale_conv.h: Use <> for includes not "".
3041         * include/ext/random: Likewise.
3042         * include/ext/vstring.h: Likewise.
3043
3044 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3045
3046         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
3047         (GLIBCXX_3.4.21): Likewise.
3048
3049 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
3050
3051         PR libstdc++/88749
3052         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
3053         to match the one that controls whether utimbuf and utime are declared.
3054
3055 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
3056
3057         PR libstdc++/87787
3058         * include/bits/char_traits.h (char_traits::move): Do not pass null
3059         pointers to memmove.
3060         * include/bits/locale_facets.h
3061         (ctype<char>::widen(const char*, const char*, char*)): Do not
3062         pass null pointers to memcpy.
3063         (ctype<char>::narrow(const char*, const char*, char, char*)):
3064         Likewise.
3065         (ctype<char>::do_widen(const char*, const char*, char*)):
3066         Likewise.
3067         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
3068         Likewise.
3069
3070         * doc/xml/manual/spine.xml: Update copyright years.
3071         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
3072         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
3073         for C++17 filesystem library.
3074         * doc/html/*: Regenerate.
3075
3076         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
3077         * config.h.in: Regenerate.
3078         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
3079         alphabetically and add missing entries for copy_symlink,
3080         hard_link_count, rename, and resize_file.
3081         * configure: Regenerate.
3082         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
3083         used unconditionally.
3084         * src/filesystem/ops-common.h (__gnu_posix::truncate)
3085         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
3086         supports truncating to zero length.
3087         * testsuite/27_io/filesystem/operations/all.cc: New test.
3088         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
3089
3090 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
3091
3092         PR libstdc++/86756
3093         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
3094         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
3095         * config.h.in: Regenerate.
3096         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
3097         remaining std::filesystem types and functions.
3098         * configure: Regenerate.
3099         * src/c++17/Makefile.am: Add C++17 filesystem sources.
3100         * src/c++17/Makefile.in: Regenerate.
3101         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
3102         here, and change name of included file.
3103         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
3104         here, and change name of included file.
3105         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
3106         path to dir-common.h.
3107         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
3108         path to ops-common.h. Disable -Wunused-parameter warnings.
3109         (internal_file_clock): Define unconditionally.
3110         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
3111         define.
3112         (do_copy_file, do_space): Move definitions to ops.common.h.
3113         (copy, file_size, hard_link_count, last_write_time, space): Only
3114         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
3115         report an error.
3116         (last_write_time, read_symlink): Remove unused attributes from
3117         parameters.
3118         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
3119         * src/filesystem/Makefile.in: Regenerate.
3120         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
3121         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
3122         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
3123         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
3124         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
3125         dummy types and functions instead of using #error.
3126         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
3127         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
3128         in terms of stat.
3129         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
3130         (do_copy_file, do_space): Move definitions here from std-ops.cc.
3131         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
3132         to account for new namespace.
3133         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
3134         -lstdc++fs from dg-options.
3135         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
3136         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
3137         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
3138         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
3139         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
3140         Likewise.
3141         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
3142         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
3143         Likewise.
3144         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
3145         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
3146         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
3147         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
3148         * testsuite/27_io/filesystem/operations/create_directories.cc:
3149         Likewise.
3150         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
3151         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
3152         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
3153         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
3154         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
3155         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
3156         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
3157         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
3158         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
3159         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
3160         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
3161         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
3162         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
3163         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
3164         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
3165         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
3166         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
3167         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
3168         Likewise.
3169         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
3170
3171
3172         PR libstdc++/86756
3173         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
3174         typeinfo and vtables less greedy.
3175         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
3176         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
3177         * src/c++17/Makefile.in: Regenerate.
3178         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
3179         here, and change name of included file.
3180         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
3181         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
3182         from sources.
3183         * src/filesystem/Makefile.in: Regenerate.
3184         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
3185         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
3186         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
3187         from dg-options and remove dg-require-filesystem-ts.
3188         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
3189         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
3190         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
3191         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
3192         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
3193         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
3194         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
3195         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
3196         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
3197         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
3198         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
3199         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
3200         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
3201         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
3202         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
3203         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
3204         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
3205         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
3206         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
3207         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
3208         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
3209         Likewise.
3210         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
3211         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
3212         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
3213         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
3214         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
3215         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
3216         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
3217         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
3218         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
3219         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
3220         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
3221         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
3222         Likewise.
3223         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
3224         Likewise.
3225         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
3226         Likewise.
3227         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
3228         Likewise.
3229         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
3230         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
3231         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
3232         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
3233         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
3234         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
3235         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
3236         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
3237         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
3238         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
3239         Likewise.
3240         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
3241         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
3242         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
3243         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
3244         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
3245
3246         PR libstdc++/87431
3247         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
3248         Check is_trivially_copyable instead of is_scalar.
3249         (variant::emplace<N, Args>(Args&&...)): If construction of the new
3250         contained value can throw and its type is trivially copyable then
3251         construct into a temporary variant and move from it, to provide the
3252         strong exception safety guarantee.
3253         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
3254         Likewise.
3255         * testsuite/20_util/variant/87431.cc: New test.
3256         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
3257         conversion causes valueless state.
3258
3259         PR libstdc++/88607
3260         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
3261         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
3262         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
3263         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
3264         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
3265
3266 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
3267
3268         * include/bits/fs_fwd.h (__file_clock): Define new clock.
3269         (file_time_type): Redefine in terms of __file_clock.
3270         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
3271         overflow.
3272         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
3273         internal linkage.
3274         (internal_file_lock): New helper type for accessing __file_clock.
3275         (do_copy_file): Use internal_file_lock to convert system time to
3276         file_time_type.
3277         (last_write_time(const path&, error_code&)): Likewise.
3278         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
3279
3280 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
3281
3282         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
3283         for const member functions of std::basic_string.
3284         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
3285         in C++17.
3286         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
3287         Make non-standard constructor private.
3288         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
3289         Likewise.
3290         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
3291         explicit instantiations for C++17 as well as earlier dialects.
3292         * src/c++17/Makefile.am: Add new source files.
3293         * src/c++17/Makefile.in: Regenerate.
3294         * src/c++17/cow-string-inst.cc: New file defining explicit
3295         instantiations for basic_string member functions added in C++17.
3296         * src/c++17/string-inst.cc: Likewise.
3297
3298         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
3299         copy/move constructors for old std::basic_string.
3300         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
3301         (basic_string::reference, basic_string::const_reference): Define
3302         as plain references for C++11 and later.
3303         (basic_string::basic_string()): Put constructor body outside
3304         preprocessor conditional groups.
3305         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
3306         instead of copying it.
3307         (basic_string::basic_string(const basic_string&, const _Alloc&)):
3308         Define.
3309         (basic_string::basic_string(basic_string&&, const _Alloc&)):
3310         Define.
3311         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
3312         cases for old basic_string.
3313         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
3314         allocator-extended constructors unconditionally. Add extra members to
3315         allocator type when using old string ABI.
3316         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
3317         for old string ABI.
3318         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
3319
3320         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
3321         -fno-inline added to test flags.
3322
3323         * testsuite/21_strings/basic_string/requirements/
3324         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
3325
3326         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
3327         assertion failures with old std::string ABI.
3328
3329         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
3330         with ...
3331         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
3332         functions that will only erase elements at the end.
3333         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
3334         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
3335         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
3336         of erase(p, end()).
3337         (path::_List::pop_back()): Define.
3338         (path::_List::_M_erase_from(const_iterator)): Define.
3339         (path::operator/=(const path&)): Use pop_back to remove last component
3340         and _M_erase_from to remove multiple components.
3341         (path::_M_append(basic_string_view<value_type>)): Likewise.
3342         (path::operator+=(const path&)): Likewise.
3343         (path::_M_concat(basic_string_view<value_type>)): Likewise.
3344         (path::remove_filename()): Likewise.
3345         (path::lexically_normal()): Use _List::_Impl iterators instead of
3346         path::iterator. Use pop_back to remove components from the end. Clear
3347         trailing filename, instead of using erase(const_iterator) to remove
3348         a non-final component.
3349         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
3350         additional cases.
3351         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
3352
3353         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
3354         incorrect treatment of empty filename after trailing slash.
3355         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
3356
3357         * testsuite/21_strings/basic_string/modifiers/assign/char/
3358         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
3359         to test flags.
3360         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
3361         move_assign_optim.cc: Likewise.
3362
3363 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
3364             Jakub Jelinek  <jakub@redhat.com>
3365
3366         PR libstdc++/88607
3367         * include/experimental/memory: Replace UTF-8 quote characters.
3368         * include/std/future: Replace UTF-8 "em dash" characters.
3369
3370 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
3371
3372         PR libstdc++/88607
3373         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
3374         * include/debug/forward_list: Likewise.
3375         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
3376         character.
3377         * include/experimental/chrono: Likewise.
3378         * include/experimental/functional: Likewise.
3379         * include/experimental/ratio: Likewise.
3380         * include/experimental/system_error: Likewise.
3381         * include/experimental/tuple: Likewise.
3382         * include/experimental/type_traits: Likewise.
3383         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
3384         * include/parallel/multiseq_selection.h: Likewise.
3385
3386         PR libstdc++/88681
3387         * config/abi/pre/gnu.ver: Add missing exports.
3388         * testsuite/22_locale/collate_byname/88681.cc: New test.
3389         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
3390         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
3391
3392 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
3393
3394         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
3395         initializer_list<value_type> and from input iterator ranges.
3396         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
3397
3398         * testsuite/experimental/string_view/element_access/char/empty.cc:
3399         Fix year range in copyright header.
3400
3401 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
3402
3403         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
3404         Fix year range in copyright header.
3405
3406 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
3407
3408         Update copyright years.
3409 \f
3410 Copyright (C) 2019 Free Software Foundation, Inc.
3411
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