libstdc++-v3/ChangeLog

   1 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
   2
   3         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
   4         * 27_io/filesystem/operations/resize_file.cc: Likewise.
   5         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
   6
   7 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
   8
   9         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
  10         * doc/html/*: Regenerate.
  11
  12         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
  13         * doc/html/*: Regenerate.
  14
  15         * doc/xml/manual/intro.xml: Document LWG 2586 status.
  16         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
  17         allocator type in is_constructible checks.
  18         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
  19         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
  20         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
  21         problematic type from LWG 2586 discussion.
  22         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
  23         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
  24
  25         * configure.ac: Check for C11 timespec_get function.
  26         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
  27         (openbsd): Likewise
  28         * config.h.in: Regenerate.
  29         * configure: Regenerate.
  30         * include/c_global/ctime (timespec, timespec_get): Add to namespace
  31         std for C++17 and up.
  32
  33         * doc/xml/manual/intro.xml: Document LWG 2537 status.
  34         * include/bits/stl_queue.h
  35         (priority_queue(const Compare&, const Container&, const Alloc&))
  36         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
  37         make_heap.
  38         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
  39
  40         * doc/xml/manual/intro.xml: Document LWG 2566 status.
  41         * include/bits/stl_queue.h (queue, priority_queue): Add static
  42         assertions to enforce LWG 2566 requirement on value_type.
  43         * include/bits/stl_stack.h (stack): Likewise.
  44
  45         PR middle-end/89303
  46         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
  47
  48         * doc/xml/manual/intro.xml: Document LWG 2735 status.
  49         * include/bits/std_abs.h: Add comment about LWG 2735.
  50         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
  51
  52 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
  53
  54         PR libstdc++/89345
  55         * include/std/version [__cpp_impl_destroying_delete]
  56         (__cpp_lib_destroying_delete): Only define for C++2a and later.
  57         * libsupc++/new [__cpp_impl_destroying_delete]
  58         (__cpp_lib_destroying_delete): Likewise.
  59         (destroying_delete_t, destroying_delete): Likewise, but define even
  60         when __cpp_impl_destroying_delete is not defined.
  61         * testsuite/18_support/destroying_delete.cc: New test.
  62
  63 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
  64
  65         PR libstdc++/89023
  66         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
  67         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
  68         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
  69         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
  70
  71 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
  72
  73         PR libstdc++/71044
  74         * include/bits/fs_path.h (path::has_root_name)
  75         (path::has_root_directory, path::has_root_path)
  76         (path::has_relative_path, path::has_parent_path)
  77         (path::has_filename, path::has_stem, path::has_extension)
  78         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
  79         noexcept.
  80         * src/c++17/fs_path.cc (path::has_root_name)
  81         (path::has_root_directory, path::has_root_path)
  82         (path::has_relative_path, path::has_parent_path)
  83         (path::has_filename, path::_M_find_extension): Add noexcept.
  84
  85 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
  86
  87         PR libstdc++/89102 (partial)
  88         * include/std/type_traits (common_type<>): Define.
  89         (common_type<T>): Derive from common_type<T, T>.
  90         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
  91         Test zero-length template argument list.
  92         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
  93         Test additional single argument cases.
  94         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
  95         Adjust expected error.
  96
  97 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
  98
  99         PR libstdc++/89128
 100         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
 101         guides.
 102         * include/bits/stl_stack.h (stack): Likewise.
 103         * testsuite/23_containers/priority_queue/deduction.cc: New test.
 104         * testsuite/23_containers/queue/deduction.cc: New test.
 105         * testsuite/23_containers/stack/deduction.cc: New test.
 106
 107         PR libstdc++/89194
 108         * include/std/type_traits (__is_convertible_helper)
 109         (__is_convertible_helper<_From, _To, false>): Revert changes to
 110         support is_nothrow_convertible.
 111         (__is_nt_convertible_helper): New helper.
 112         (is_nothrow_convertible): Use __is_nt_convertible_helper.
 113
 114         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
 115         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
 116
 117         PR libstdc++/89130
 118         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
 119         __is_alloc_insertable_impl. Replace single type member with two
 120         members, one for each of copy and move insertable.
 121         (__is_move_insertable): New trait for internal use.
 122         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
 123         (vector::_S_nothrow_relocate(true_type)): New functions to
 124         conditionally check if __relocate_a can throw.
 125         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
 126         on __is_move_insertable.
 127         (vector::_S_do_relocate): New overloaded functions to conditionally
 128         call __relocate_a.
 129         (vector::_S_relocate): New function that dispatches to _S_do_relocate
 130         based on _S_use_relocate.
 131         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 132         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
 133         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
 134
 135         PR libstdc++/89090
 136         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
 137         parameter unnamed. Add message to static assertion.
 138         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 139         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
 140         in C++11 code.
 141
 142 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
 143
 144         PR libstdc++/87106
 145         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
 146         Rename...
 147         (__is_bitwise_relocatable): ... to this.
 148         (__relocate_a_1): Adapt.
 149         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
 150         (__is_bitwise_relocatable): ... to this.
 151
 152 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
 153
 154         PR libstdc++/89117
 155         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
 156         final component as well as from _M_pathname. Append the dot using
 157         operator+= instead of only to _M_pathname.
 158         (path::_M_find_extension): Reformat slightly.
 159         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
 160         Add more test cases.
 161
 162 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
 163
 164         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
 165
 166 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
 167
 168         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
 169         constexpr specifiers from arg and proj.
 170
 171         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
 172         __shared_ptr instantiations used by gcc4-compatible ABI.
 173
 174         * include/experimental/forward_list (experimental::erase): Qualify
 175         call to erase_if.
 176         * include/experimental/list (experimental::erase): Likewise.
 177         * include/std/forward_list (std::erase): Likewise.
 178         * include/std/list (std::erase): Likewise.
 179
 180         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
 181         C++2a.
 182         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
 183         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
 184         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
 185         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
 186         * testsuite/ext/array_allocator/26875.cc: Likewise.
 187         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
 188         * testsuite/util/replacement_memory_operators.h: Likewise.
 189         * testsuite/util/testsuite_allocator.h: Likewise.
 190
 191         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
 192         normal mode vector, even for debug mode.
 193         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
 194         Define alias template for normal mode vector.
 195
 196 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
 197
 198         PR libstdc++/68737
 199         * config/locale/generic/c_locale.h (__convert_from_v)
 200         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 201         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 202         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
 203         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 204
 205 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
 206
 207         PR libstdc++/88840
 208         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
 209         data member with static member function _S_use_relocate().
 210         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 211         (vector::_M_default_append): Use _S_use_relocate() instead of
 212         __use_relocate.
 213
 214         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
 215         sign of results.
 216
 217 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
 218
 219         PR libstdc++/88740
 220         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
 221         write to stderr instead of using printf.
 222
 223 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
 224
 225         PR libstdc++/86590
 226         * include/bits/char_traits.h (__constant_string_p,
 227         __constant_char_array_p): Use __builtin_is_constant_evaluated if
 228         available.
 229
 230 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
 231
 232         Implement C++20 P0600r1.
 233         * include/backward/hash_map: Add nodiscard attribute to empty.
 234         * include/backward/hash_set: Likewise.
 235         * backward/hashtable.h: Likewise.
 236         * include/bits/basic_string.h: Likewise.
 237         * include/bits/forward_list.h: Likewise.
 238         * include/bits/hashtable.h: Likewise.
 239         * include/bits/regex.h: Likewise.
 240         * include/bits/stl_deque.h: Likewise.
 241         * include/bits/stl_list.h: Likewise.
 242         * include/bits/stl_map.h: Likewise.
 243         * include/bits/stl_multimap.h: Likewise.
 244         * include/bits/stl_multiset.h: Likewise.
 245         * include/bits/stl_queue.h: Likewise.
 246         * include/bits/stl_set.h: Likewise.
 247         * include/bits/stl_stack.h: Likewise.
 248         * include/bits/stl_tree.h: Likewise.
 249         * include/bits/stl_vector.h: Likewise.
 250         * include/bits/unordered_map.h: Likewise.
 251         * include/bits/unordered_set.h: Likewise.
 252         * include/debug/array: Likewise.
 253         * include/experimental/any: Likewise.
 254         * include/experimental/bits/fs_path.h: Likewise.
 255         * include/experimental/internet: Likewise.
 256         * include/experimental/string_view: Likewise.
 257         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
 258         Likewise.
 259         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
 260         Likewise.
 261         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
 262         Likewise.
 263         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
 264         Likewise.
 265         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
 266         Likewise.
 267         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
 268         Likewise.
 269         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
 270         Likewise.
 271         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
 272         Likewise.
 273         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 274         info_fn_imps.hpp: Likewise.
 275         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 276         left_child_next_sibling_heap_.hpp: Likewise.
 277         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
 278         Likewise.
 279         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
 280         Likewise.
 281         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
 282         Likewise.
 283         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
 284         Likewise.
 285         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
 286         Likewise.
 287         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
 288         Likewise.
 289         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
 290         Likewise.
 291         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
 292         * include/ext/pb_ds/trie_policy.hpp: Likewise.
 293         * include/ext/rope: Likewise.
 294         * include/ext/slist: Likewise.
 295         * include/ext/vstring.h: Likewise.
 296         * include/profile/array: Likewise.
 297         * include/std/array: Likewise.
 298         * include/tr1/array: Likewise.
 299         * include/tr1/hashtable.h: Likewise.
 300         * include/tr1/regex: Likewise.
 301         * include/tr2/dynamic_bitset: Likewise.
 302         * include/bits/alloc_traits.h: Add nodiscard attribute to
 303         allocate.
 304         * include/experimental/memory_resource: Likewise.
 305         * include/ext/alloc_traits.h: Likewise.
 306         * include/ext/array_allocator.h: Likewise.
 307         * include/ext/bitmap_allocator.h: Likewise.
 308         * include/ext/debug_allocator.h: Likewise.
 309         * include/ext/extptr_allocator.h: Likewise.
 310         * include/ext/mt_allocator.h: Likewise.
 311         * include/ext/new_allocator.h: Likewise.
 312         * include/ext/pool_allocator.h: Likewise.
 313         * include/ext/throw_allocator.h: Likewise.
 314         * include/std/scoped_allocator: Likewise.
 315         * libsupc++/eh_alloc.cc: Likewise.
 316         * include/std/future: Add nodiscard attribute to async.
 317         * libsupc++/new: Add nodiscard attribute to new.
 318
 319 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
 320
 321         PR libstdc++/87514
 322         PR libstdc++/87520
 323         PR libstdc++/88782
 324         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
 325         * include/bits/shared_ptr.h
 326         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
 327         (allocate_shared): Change to use new tag type.
 328         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
 329         Declare new member function.
 330         (_Sp_alloc_shared_tag): Define new type.
 331         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
 332         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
 333         _Sp_make_shared_tag::_S_eq to check type_info.
 334         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
 335         Constrain to prevent being called with _Sp_alloc_shared_tag.
 336         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
 337         Replace constructor with ...
 338         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
 339         reference parameter so address of the new object can be returned to
 340         the caller. Obtain the allocator from the tag type.
 341         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
 342         constructor with ...
 343         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
 344         to the __shared_count constructor.
 345         (__allocate_shared): Change to use new tag type.
 346         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
 347
 348 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
 349
 350         * src/c++17/fs_ops.cc
 351         (equivalent(const path&, const path&, error_code&))
 352         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
 353         compare files instead of relying on incomplete info returned by stat.
 354
 355         PR libstdc++/88884
 356         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
 357         if the path is already absolute.
 358         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
 359         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
 360
 361         PR libstdc++/88881
 362         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
 363         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
 364         of filesystem::exists.
 365         (create_directories(const path&, error_code&)): Add assertions.
 366         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
 367         Add workaround for bug in _wstat for paths with trailing slash.
 368         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
 369         for expected behaviour on mingw.
 370         * testsuite/experimental/filesystem/operations/create_directories.cc:
 371         Likewise.
 372         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
 373         "TMP" instead of "TMPDIR" and clean environment before each test. Do
 374         not test permissions on mingw targets.
 375
 376 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
 377
 378         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
 379         constructors and open members taking wide strings. Fix patterns for
 380         filesystem::path members to match wstring_view parameters. Add
 381         exports for shared_ptr members used by directory iterators.
 382         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
 383         error code parameter if the file doesn't exist.
 384         * src/filesystem/ops.cc (remove(const path&, error_code&)):
 385         Likewise.
 386         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
 387         values for mingw targets, where "/" is not an absolute path. Do not
 388         test symlinks on mingw targets.
 389         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
 390         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
 391         on mingw targets.
 392         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
 393         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
 394         that each component of the path is created.
 395         * testsuite/experimental/filesystem/operations/create_directories.cc:
 396         Likewise.
 397         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
 398         permissions on mingw targets.
 399         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
 400         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
 401         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
 402         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
 403         mingw targets.
 404         * testsuite/experimental/filesystem/operations/permissions.cc:
 405         Likewise.
 406         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
 407         symlinks or permissions on mingw targets.
 408         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
 409         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
 410         symlinks on mingw targets.
 411         * testsuite/experimental/filesystem/operations/remove_all.cc:
 412         Likewise.
 413         * testsuite/27_io/filesystem/operations/status.cc: Do not test
 414         permissions on mingw targets.
 415         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
 416         test symlinks on mingw targets.
 417         * testsuite/experimental/filesystem/operations/space.cc: Fix test
 418         for mingw targets.
 419
 420 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
 421
 422         PR libstdc++/88738
 423         Warn about unused comparisons of shared_ptr/unique_ptr
 424         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
 425         * include/bits/shared_ptr.h: Use it for operator ==, !=,
 426         <, <=, >, >= for shared_ptr.
 427         * include/bits/unique_ptr.h: Likewise for unique_ptr.
 428
 429 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
 430
 431         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
 432         as 201611L, because P0497R0 changes are supported.
 433         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
 434
 435         * include/bits/erase_if.h [__cplusplus > 201703L]
 436         (__cpp_lib_erase_if): Only define for C++2a.
 437         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
 438         (__cpp_lib_null_iterators): Define.
 439         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
 440         (__cpp_lib_null_iterators): Define.
 441         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
 442
 443         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
 444         status.
 445         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
 446         Define.
 447         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
 448         changes are supported.
 449         * include/std/optional (__cpp_lib_optional): Likewise.
 450         * include/std/variant (__cpp_lib_variant): Likewise.
 451         * include/std/version [!__STRICT_ANSI__]
 452         (__cpp_lib_uncaught_exceptions): Define as long integer.
 453         [__cplusplus >= 201703L] (__cpp_lib_any)
 454         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
 455         (__cpp_lib_variant): Define for C++17.
 456         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
 457         as long integer.
 458         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
 459         integer.
 460
 461         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
 462
 463 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
 464
 465         PR libstdc++/88811
 466         PR libstdc++/83306
 467         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
 468         before second path.
 469         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
 470         test.
 471
 472 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
 473
 474         * doc/xml/manual/intro.xml: Include new section.
 475         * doc/xml/manual/status_cxx2017.xml: Document more
 476         implementation-defined properties of the library.
 477         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
 478         * doc/html/*: Regenerate.
 479
 480         * include/bits/refwrap.h [__cplusplus > 201703L]
 481         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
 482         (_Reference_wrapper_base_memfun): Do not define for C++2a.
 483         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
 484         for C++2a.
 485         (reference_wrapper::operator()): Add static assertion.
 486         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
 487
 488         * include/std/chrono (duration_values::zero(), duration_values::min())
 489         (duration_values::max()): Add noexcept.
 490         (duration::zero(), duration::min(), duration::max()): Likewise.
 491         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
 492         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
 493         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
 494
 495         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
 496
 497 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
 498
 499         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
 500         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
 501
 502 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
 503
 504         PR libstdc++/88802
 505         * include/bits/functional_hash.h (hash<nullptr_t>): Define
 506         specialization for C++17 (P0513R0, LWG 2817).
 507         * testsuite/20_util/hash/nullptr.cc: New test.
 508
 509         PR libstdc++/88125
 510         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
 511         pattern for std::basic_stringbuf::str().
 512
 513         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
 514         basic_ostream::operator<< patterns.
 515
 516 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
 517
 518         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
 519         test failures on targets with 32-bit time_t.
 520
 521         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
 522         * include/std/deque: Likewise.
 523         * include/std/forward_list: Likewise.
 524         * include/std/list: Likewise.
 525         * include/std/string: Likewise.
 526         * include/std/vector: Likewise.
 527         * include/std/version: Likewise.
 528         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
 529         * testsuite/23_containers/deque/erasure.cc: Likewise.
 530         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
 531         * testsuite/23_containers/list/erasure.cc: Likewise.
 532         * testsuite/23_containers/map/erasure.cc: Likewise.
 533         * testsuite/23_containers/set/erasure.cc: Likewise.
 534         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
 535         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
 536         * testsuite/23_containers/vector/erasure.cc: Likewise.
 537
 538         * include/experimental/internet [AI_NUMERICSERV]
 539         (resolver_base::numeric_service): Define conditionally.
 540         * testsuite/experimental/net/internet/resolver/base.cc: Test it
 541         conditionally.
 542         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
 543         Likewise.
 544
 545 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
 546             Jonathan Wakely  <jwakely@redhat.com>
 547
 548         Implement LWG 2221
 549         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
 550         (GLIBCXX_3.4.26): Add new exports.
 551         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
 552         correct list of sources.
 553         * include/Makefile.in: Regenerate.
 554         * include/std/ostream (operator<<(nullptr_t)): New member function.
 555         * src/c++17/ostream-inst.cc: New file.
 556         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
 557         test.
 558
 559 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
 560
 561         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
 562         of the source file containing the caller.
 563         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
 564         directories created by test.
 565         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
 566         Likewise.
 567         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
 568         Likewise.
 569         * testsuite/experimental/filesystem/iterators/
 570         recursive_directory_iterator.cc: Likewise.
 571
 572 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
 573
 574         PR tree-optimization/88775
 575         * include/bits/stl_function.h (greater<_Tp*>::operator(),
 576         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
 577         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
 578         instead of __builtin_constant_p if available.  Don't bother with
 579         the pointer comparison in C++11 and earlier.
 580
 581 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
 582
 583         PR other/16615
 584
 585         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
 586         with "cannot".
 587
 588 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
 589
 590         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
 591         for filesystem::path. Give variables more distinctive names.
 592
 593         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
 594         member function to perform non-trivial assignment.
 595         (_Optional_payload_base::_M_move_assign): Likewise.
 596         (_Optional_payload<T, true, false, true>::operator=)
 597         (_Optional_payload<T, true, true, false>::operator=)
 598         (_Optional_payload<T, true, false, false>::operator=): Call
 599         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
 600
 601         PR libstdc++/88204
 602         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
 603         test std::complex<long double> if long double format is IBM128.
 604         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
 605         Likewise.
 606
 607 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
 608
 609         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
 610         for old std::unique_ptr layout.
 611         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
 612         to become valueless. Add filesystem::path tests.
 613
 614         PR libstdc++/87855
 615         * include/std/optional (_Optional_payload_base): New class template
 616         for common code hoisted from _Optional_payload specializations. Use
 617         a template for the union, to allow a partial specialization for
 618         types with non-trivial destructors. Add constructors for in-place
 619         initialization to the union.
 620         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
 621         to perform non-trivial copy construction, instead of relying on
 622         non-standard copy elision in a delegating constructor.
 623         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
 624         non-trivial move construction.
 625         (_Optional_payload): Derive from _Optional_payload_base and use it
 626         for everything except the non-trivial assignment operators, which are
 627         defined as needed.
 628         (_Optional_payload<false, C, M>): Derive from the specialization
 629         _Optional_payload<true, false, false> and add a destructor.
 630         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
 631         Forward to corresponding members of _Optional_payload.
 632         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
 633         Hoist common members from _Optional_base.
 634         (_Optional_base): Make all members and base class public.
 635         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
 636         _Optional_base_impl.
 637         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
 638         support for new std::optional layout.
 639         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
 640
 641         PR libstdc++/88066
 642         * include/bits/locale_conv.h: Use <> for includes not "".
 643         * include/ext/random: Likewise.
 644         * include/ext/vstring.h: Likewise.
 645
 646 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 647
 648         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
 649         (GLIBCXX_3.4.21): Likewise.
 650
 651 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
 652
 653         PR libstdc++/88749
 654         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
 655         to match the one that controls whether utimbuf and utime are declared.
 656
 657 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
 658
 659         PR libstdc++/87787
 660         * include/bits/char_traits.h (char_traits::move): Do not pass null
 661         pointers to memmove.
 662         * include/bits/locale_facets.h
 663         (ctype<char>::widen(const char*, const char*, char*)): Do not
 664         pass null pointers to memcpy.
 665         (ctype<char>::narrow(const char*, const char*, char, char*)):
 666         Likewise.
 667         (ctype<char>::do_widen(const char*, const char*, char*)):
 668         Likewise.
 669         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
 670         Likewise.
 671
 672         * doc/xml/manual/spine.xml: Update copyright years.
 673         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
 674         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
 675         for C++17 filesystem library.
 676         * doc/html/*: Regenerate.
 677
 678         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
 679         * config.h.in: Regenerate.
 680         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
 681         alphabetically and add missing entries for copy_symlink,
 682         hard_link_count, rename, and resize_file.
 683         * configure: Regenerate.
 684         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
 685         used unconditionally.
 686         * src/filesystem/ops-common.h (__gnu_posix::truncate)
 687         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
 688         supports truncating to zero length.
 689         * testsuite/27_io/filesystem/operations/all.cc: New test.
 690         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
 691
 692 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
 693
 694         PR libstdc++/86756
 695         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
 696         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
 697         * config.h.in: Regenerate.
 698         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
 699         remaining std::filesystem types and functions.
 700         * configure: Regenerate.
 701         * src/c++17/Makefile.am: Add C++17 filesystem sources.
 702         * src/c++17/Makefile.in: Regenerate.
 703         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
 704         here, and change name of included file.
 705         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
 706         here, and change name of included file.
 707         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
 708         path to dir-common.h.
 709         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
 710         path to ops-common.h. Disable -Wunused-parameter warnings.
 711         (internal_file_clock): Define unconditionally.
 712         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
 713         define.
 714         (do_copy_file, do_space): Move definitions to ops.common.h.
 715         (copy, file_size, hard_link_count, last_write_time, space): Only
 716         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
 717         report an error.
 718         (last_write_time, read_symlink): Remove unused attributes from
 719         parameters.
 720         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
 721         * src/filesystem/Makefile.in: Regenerate.
 722         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
 723         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
 724         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
 725         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
 726         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
 727         dummy types and functions instead of using #error.
 728         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
 729         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
 730         in terms of stat.
 731         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
 732         (do_copy_file, do_space): Move definitions here from std-ops.cc.
 733         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
 734         to account for new namespace.
 735         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
 736         -lstdc++fs from dg-options.
 737         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
 738         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
 739         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
 740         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
 741         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
 742         Likewise.
 743         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
 744         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
 745         Likewise.
 746         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
 747         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
 748         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
 749         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
 750         * testsuite/27_io/filesystem/operations/create_directories.cc:
 751         Likewise.
 752         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
 753         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
 754         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
 755         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
 756         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
 757         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
 758         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
 759         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
 760         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
 761         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
 762         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
 763         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
 764         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
 765         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
 766         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
 767         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
 768         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
 769         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 770         Likewise.
 771         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
 772
 773
 774         PR libstdc++/86756
 775         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
 776         typeinfo and vtables less greedy.
 777         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
 778         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
 779         * src/c++17/Makefile.in: Regenerate.
 780         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
 781         here, and change name of included file.
 782         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
 783         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
 784         from sources.
 785         * src/filesystem/Makefile.in: Regenerate.
 786         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
 787         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
 788         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
 789         from dg-options and remove dg-require-filesystem-ts.
 790         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
 791         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
 792         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
 793         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
 794         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
 795         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
 796         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
 797         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
 798         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
 799         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
 800         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
 801         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
 802         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
 803         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
 804         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
 805         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
 806         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
 807         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
 808         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
 809         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
 810         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
 811         Likewise.
 812         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
 813         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
 814         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
 815         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
 816         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
 817         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
 818         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
 819         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
 820         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
 821         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
 822         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
 823         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
 824         Likewise.
 825         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
 826         Likewise.
 827         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
 828         Likewise.
 829         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
 830         Likewise.
 831         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
 832         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
 833         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
 834         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
 835         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
 836         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
 837         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
 838         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
 839         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
 840         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
 841         Likewise.
 842         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
 843         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
 844         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
 845         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
 846         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
 847
 848         PR libstdc++/87431
 849         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
 850         Check is_trivially_copyable instead of is_scalar.
 851         (variant::emplace<N, Args>(Args&&...)): If construction of the new
 852         contained value can throw and its type is trivially copyable then
 853         construct into a temporary variant and move from it, to provide the
 854         strong exception safety guarantee.
 855         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
 856         Likewise.
 857         * testsuite/20_util/variant/87431.cc: New test.
 858         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
 859         conversion causes valueless state.
 860
 861         PR libstdc++/88607
 862         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
 863         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
 864         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
 865         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
 866         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
 867
 868 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
 869
 870         * include/bits/fs_fwd.h (__file_clock): Define new clock.
 871         (file_time_type): Redefine in terms of __file_clock.
 872         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
 873         overflow.
 874         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
 875         internal linkage.
 876         (internal_file_lock): New helper type for accessing __file_clock.
 877         (do_copy_file): Use internal_file_lock to convert system time to
 878         file_time_type.
 879         (last_write_time(const path&, error_code&)): Likewise.
 880         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
 881
 882 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
 883
 884         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
 885         for const member functions of std::basic_string.
 886         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
 887         in C++17.
 888         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
 889         Make non-standard constructor private.
 890         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
 891         Likewise.
 892         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
 893         explicit instantiations for C++17 as well as earlier dialects.
 894         * src/c++17/Makefile.am: Add new source files.
 895         * src/c++17/Makefile.in: Regenerate.
 896         * src/c++17/cow-string-inst.cc: New file defining explicit
 897         instantiations for basic_string member functions added in C++17.
 898         * src/c++17/string-inst.cc: Likewise.
 899
 900         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
 901         copy/move constructors for old std::basic_string.
 902         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
 903         (basic_string::reference, basic_string::const_reference): Define
 904         as plain references for C++11 and later.
 905         (basic_string::basic_string()): Put constructor body outside
 906         preprocessor conditional groups.
 907         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
 908         instead of copying it.
 909         (basic_string::basic_string(const basic_string&, const _Alloc&)):
 910         Define.
 911         (basic_string::basic_string(basic_string&&, const _Alloc&)):
 912         Define.
 913         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
 914         cases for old basic_string.
 915         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
 916         allocator-extended constructors unconditionally. Add extra members to
 917         allocator type when using old string ABI.
 918         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
 919         for old string ABI.
 920         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
 921
 922         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
 923         -fno-inline added to test flags.
 924
 925         * testsuite/21_strings/basic_string/requirements/
 926         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
 927
 928         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
 929         assertion failures with old std::string ABI.
 930
 931         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
 932         with ...
 933         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
 934         functions that will only erase elements at the end.
 935         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
 936         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
 937         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
 938         of erase(p, end()).
 939         (path::_List::pop_back()): Define.
 940         (path::_List::_M_erase_from(const_iterator)): Define.
 941         (path::operator/=(const path&)): Use pop_back to remove last component
 942         and _M_erase_from to remove multiple components.
 943         (path::_M_append(basic_string_view<value_type>)): Likewise.
 944         (path::operator+=(const path&)): Likewise.
 945         (path::_M_concat(basic_string_view<value_type>)): Likewise.
 946         (path::remove_filename()): Likewise.
 947         (path::lexically_normal()): Use _List::_Impl iterators instead of
 948         path::iterator. Use pop_back to remove components from the end. Clear
 949         trailing filename, instead of using erase(const_iterator) to remove
 950         a non-final component.
 951         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
 952         additional cases.
 953         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
 954
 955         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
 956         incorrect treatment of empty filename after trailing slash.
 957         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
 958
 959         * testsuite/21_strings/basic_string/modifiers/assign/char/
 960         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
 961         to test flags.
 962         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
 963         move_assign_optim.cc: Likewise.
 964
 965 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
 966             Jakub Jelinek  <jakub@redhat.com>
 967
 968         PR libstdc++/88607
 969         * include/experimental/memory: Replace UTF-8 quote characters.
 970         * include/std/future: Replace UTF-8 "em dash" characters.
 971
 972 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
 973
 974         PR libstdc++/88607
 975         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
 976         * include/debug/forward_list: Likewise.
 977         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
 978         character.
 979         * include/experimental/chrono: Likewise.
 980         * include/experimental/functional: Likewise.
 981         * include/experimental/ratio: Likewise.
 982         * include/experimental/system_error: Likewise.
 983         * include/experimental/tuple: Likewise.
 984         * include/experimental/type_traits: Likewise.
 985         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
 986         * include/parallel/multiseq_selection.h: Likewise.
 987
 988         PR libstdc++/88681
 989         * config/abi/pre/gnu.ver: Add missing exports.
 990         * testsuite/22_locale/collate_byname/88681.cc: New test.
 991         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
 992         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
 993
 994 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
 995
 996         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
 997         initializer_list<value_type> and from input iterator ranges.
 998         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
 999
1000         * testsuite/experimental/string_view/element_access/char/empty.cc:
1001         Fix year range in copyright header.
1002
1003 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
1004
1005         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
1006         Fix year range in copyright header.
1007
1008 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
1009
1010         Update copyright years.
1011 \f
1012 Copyright (C) 2019 Free Software Foundation, Inc.
1013
1014 Copying and distribution of this file, with or without modification,
1015 are permitted in any medium without royalty provided the copyright
1016 notice and this notice are preserved.