libstdc++-v3/ChangeLog

   1 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
   2
   3         PR libstdc++/88738
   4         Warn about unused comparisons of shared_ptr/unique_ptr
   5         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
   6         * include/bits/shared_ptr.h: Use it for operator ==, !=,
   7         <, <=, >, >= for shared_ptr.
   8         * include/bits/unique_ptr.h: Likewise for unique_ptr.
   9
  10 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
  11
  12         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
  13         as 201611L, because P0497R0 changes are supported.
  14         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
  15
  16         * include/bits/erase_if.h [__cplusplus > 201703L]
  17         (__cpp_lib_erase_if): Only define for C++2a.
  18         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
  19         (__cpp_lib_null_iterators): Define.
  20         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
  21         (__cpp_lib_null_iterators): Define.
  22         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
  23
  24         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
  25         status.
  26         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
  27         Define.
  28         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
  29         changes are supported.
  30         * include/std/optional (__cpp_lib_optional): Likewise.
  31         * include/std/variant (__cpp_lib_variant): Likewise.
  32         * include/std/version [!__STRICT_ANSI__]
  33         (__cpp_lib_uncaught_exceptions): Define as long integer.
  34         [__cplusplus >= 201703L] (__cpp_lib_any)
  35         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
  36         (__cpp_lib_variant): Define for C++17.
  37         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
  38         as long integer.
  39         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
  40         integer.
  41
  42         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
  43
  44 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
  45
  46         PR libstdc++/88811
  47         PR libstdc++/83306
  48         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
  49         before second path.
  50         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
  51         test.
  52
  53 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
  54
  55         * doc/xml/manual/intro.xml: Include new section.
  56         * doc/xml/manual/status_cxx2017.xml: Document more
  57         implementation-defined properties of the library.
  58         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
  59         * doc/html/*: Regenerate.
  60
  61         * include/bits/refwrap.h [__cplusplus > 201703L]
  62         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
  63         (_Reference_wrapper_base_memfun): Do not define for C++2a.
  64         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
  65         for C++2a.
  66         (reference_wrapper::operator()): Add static assertion.
  67         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
  68
  69         * include/std/chrono (duration_values::zero(), duration_values::min())
  70         (duration_values::max()): Add noexcept.
  71         (duration::zero(), duration::min(), duration::max()): Likewise.
  72         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
  73         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
  74         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
  75
  76         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
  77
  78 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
  79
  80         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
  81         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
  82
  83 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
  84
  85         PR libstdc++/88802
  86         * include/bits/functional_hash.h (hash<nullptr_t>): Define
  87         specialization for C++17 (P0513R0, LWG 2817).
  88         * testsuite/20_util/hash/nullptr.cc: New test.
  89
  90         PR libstdc++/88125
  91         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
  92         pattern for std::basic_stringbuf::str().
  93
  94         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
  95         basic_ostream::operator<< patterns.
  96
  97 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
  98
  99         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
 100         test failures on targets with 32-bit time_t.
 101
 102         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
 103         * include/std/deque: Likewise.
 104         * include/std/forward_list: Likewise.
 105         * include/std/list: Likewise.
 106         * include/std/string: Likewise.
 107         * include/std/vector: Likewise.
 108         * include/std/version: Likewise.
 109         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
 110         * testsuite/23_containers/deque/erasure.cc: Likewise.
 111         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
 112         * testsuite/23_containers/list/erasure.cc: Likewise.
 113         * testsuite/23_containers/map/erasure.cc: Likewise.
 114         * testsuite/23_containers/set/erasure.cc: Likewise.
 115         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
 116         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
 117         * testsuite/23_containers/vector/erasure.cc: Likewise.
 118
 119         * include/experimental/internet [AI_NUMERICSERV]
 120         (resolver_base::numeric_service): Define conditionally.
 121         * testsuite/experimental/net/internet/resolver/base.cc: Test it
 122         conditionally.
 123         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
 124         Likewise.
 125
 126 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
 127             Jonathan Wakely  <jwakely@redhat.com>
 128
 129         Implement LWG 2221
 130         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
 131         (GLIBCXX_3.4.26): Add new exports.
 132         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
 133         correct list of sources.
 134         * include/Makefile.in: Regenerate.
 135         * include/std/ostream (operator<<(nullptr_t)): New member function.
 136         * src/c++17/ostream-inst.cc: New file.
 137         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
 138         test.
 139
 140 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
 141
 142         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
 143         of the source file containing the caller.
 144         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
 145         directories created by test.
 146         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
 147         Likewise.
 148         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
 149         Likewise.
 150         * testsuite/experimental/filesystem/iterators/
 151         recursive_directory_iterator.cc: Likewise.
 152
 153 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
 154
 155         PR tree-optimization/88775
 156         * include/bits/stl_function.h (greater<_Tp*>::operator(),
 157         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
 158         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
 159         instead of __builtin_constant_p if available.  Don't bother with
 160         the pointer comparison in C++11 and earlier.
 161
 162 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
 163
 164         PR other/16615
 165
 166         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
 167         with "cannot".
 168
 169 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
 170
 171         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
 172         for filesystem::path. Give variables more distinctive names.
 173
 174         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
 175         member function to perform non-trivial assignment.
 176         (_Optional_payload_base::_M_move_assign): Likewise.
 177         (_Optional_payload<T, true, false, true>::operator=)
 178         (_Optional_payload<T, true, true, false>::operator=)
 179         (_Optional_payload<T, true, false, false>::operator=): Call
 180         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
 181
 182         PR libstdc++/88204
 183         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
 184         test std::complex<long double> if long double format is IBM128.
 185         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
 186         Likewise.
 187
 188 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
 189
 190         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
 191         for old std::unique_ptr layout.
 192         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
 193         to become valueless. Add filesystem::path tests.
 194
 195         PR libstdc++/87855
 196         * include/std/optional (_Optional_payload_base): New class template
 197         for common code hoisted from _Optional_payload specializations. Use
 198         a template for the union, to allow a partial specialization for
 199         types with non-trivial destructors. Add constructors for in-place
 200         initialization to the union.
 201         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
 202         to perform non-trivial copy construction, instead of relying on
 203         non-standard copy elision in a delegating constructor.
 204         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
 205         non-trivial move construction.
 206         (_Optional_payload): Derive from _Optional_payload_base and use it
 207         for everything except the non-trivial assignment operators, which are
 208         defined as needed.
 209         (_Optional_payload<false, C, M>): Derive from the specialization
 210         _Optional_payload<true, false, false> and add a destructor.
 211         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
 212         Forward to corresponding members of _Optional_payload.
 213         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
 214         Hoist common members from _Optional_base.
 215         (_Optional_base): Make all members and base class public.
 216         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
 217         _Optional_base_impl.
 218         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
 219         support for new std::optional layout.
 220         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
 221
 222         PR libstdc++/88066
 223         * include/bits/locale_conv.h: Use <> for includes not "".
 224         * include/ext/random: Likewise.
 225         * include/ext/vstring.h: Likewise.
 226
 227 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 228
 229         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
 230         (GLIBCXX_3.4.21): Likewise.
 231
 232 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
 233
 234         PR libstdc++/88749
 235         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
 236         to match the one that controls whether utimbuf and utime are declared.
 237
 238 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
 239
 240         PR libstdc++/87787
 241         * include/bits/char_traits.h (char_traits::move): Do not pass null
 242         pointers to memmove.
 243         * include/bits/locale_facets.h
 244         (ctype<char>::widen(const char*, const char*, char*)): Do not
 245         pass null pointers to memcpy.
 246         (ctype<char>::narrow(const char*, const char*, char, char*)):
 247         Likewise.
 248         (ctype<char>::do_widen(const char*, const char*, char*)):
 249         Likewise.
 250         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
 251         Likewise.
 252
 253         * doc/xml/manual/spine.xml: Update copyright years.
 254         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
 255         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
 256         for C++17 filesystem library.
 257         * doc/html/*: Regenerate.
 258
 259         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
 260         * config.h.in: Regenerate.
 261         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
 262         alphabetically and add missing entries for copy_symlink,
 263         hard_link_count, rename, and resize_file.
 264         * configure: Regenerate.
 265         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
 266         used unconditionally.
 267         * src/filesystem/ops-common.h (__gnu_posix::truncate)
 268         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
 269         supports truncating to zero length.
 270         * testsuite/27_io/filesystem/operations/all.cc: New test.
 271         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
 272
 273 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
 274
 275         PR libstdc++/86756
 276         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
 277         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
 278         * config.h.in: Regenerate.
 279         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
 280         remaining std::filesystem types and functions.
 281         * configure: Regenerate.
 282         * src/c++17/Makefile.am: Add C++17 filesystem sources.
 283         * src/c++17/Makefile.in: Regenerate.
 284         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
 285         here, and change name of included file.
 286         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
 287         here, and change name of included file.
 288         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
 289         path to dir-common.h.
 290         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
 291         path to ops-common.h. Disable -Wunused-parameter warnings.
 292         (internal_file_clock): Define unconditionally.
 293         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
 294         define.
 295         (do_copy_file, do_space): Move definitions to ops.common.h.
 296         (copy, file_size, hard_link_count, last_write_time, space): Only
 297         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
 298         report an error.
 299         (last_write_time, read_symlink): Remove unused attributes from
 300         parameters.
 301         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
 302         * src/filesystem/Makefile.in: Regenerate.
 303         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
 304         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
 305         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
 306         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
 307         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
 308         dummy types and functions instead of using #error.
 309         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
 310         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
 311         in terms of stat.
 312         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
 313         (do_copy_file, do_space): Move definitions here from std-ops.cc.
 314         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
 315         to account for new namespace.
 316         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
 317         -lstdc++fs from dg-options.
 318         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
 319         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
 320         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
 321         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
 322         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
 323         Likewise.
 324         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
 325         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
 326         Likewise.
 327         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
 328         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
 329         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
 330         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
 331         * testsuite/27_io/filesystem/operations/create_directories.cc:
 332         Likewise.
 333         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
 334         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
 335         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
 336         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
 337         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
 338         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
 339         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
 340         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
 341         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
 342         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
 343         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
 344         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
 345         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
 346         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
 347         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
 348         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
 349         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
 350         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
 351         Likewise.
 352         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
 353
 354
 355         PR libstdc++/86756
 356         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
 357         typeinfo and vtables less greedy.
 358         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
 359         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
 360         * src/c++17/Makefile.in: Regenerate.
 361         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
 362         here, and change name of included file.
 363         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
 364         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
 365         from sources.
 366         * src/filesystem/Makefile.in: Regenerate.
 367         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
 368         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
 369         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
 370         from dg-options and remove dg-require-filesystem-ts.
 371         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
 372         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
 373         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
 374         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
 375         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
 376         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
 377         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
 378         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
 379         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
 380         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
 381         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
 382         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
 383         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
 384         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
 385         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
 386         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
 387         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
 388         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
 389         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
 390         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
 391         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
 392         Likewise.
 393         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
 394         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
 395         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
 396         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
 397         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
 398         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
 399         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
 400         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
 401         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
 402         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
 403         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
 404         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
 405         Likewise.
 406         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
 407         Likewise.
 408         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
 409         Likewise.
 410         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
 411         Likewise.
 412         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
 413         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
 414         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
 415         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
 416         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
 417         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
 418         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
 419         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
 420         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
 421         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
 422         Likewise.
 423         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
 424         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
 425         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
 426         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
 427         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
 428
 429         PR libstdc++/87431
 430         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
 431         Check is_trivially_copyable instead of is_scalar.
 432         (variant::emplace<N, Args>(Args&&...)): If construction of the new
 433         contained value can throw and its type is trivially copyable then
 434         construct into a temporary variant and move from it, to provide the
 435         strong exception safety guarantee.
 436         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
 437         Likewise.
 438         * testsuite/20_util/variant/87431.cc: New test.
 439         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
 440         conversion causes valueless state.
 441
 442         PR libstdc++/88607
 443         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
 444         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
 445         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
 446         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
 447         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
 448
 449 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
 450
 451         * include/bits/fs_fwd.h (__file_clock): Define new clock.
 452         (file_time_type): Redefine in terms of __file_clock.
 453         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
 454         overflow.
 455         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
 456         internal linkage.
 457         (internal_file_lock): New helper type for accessing __file_clock.
 458         (do_copy_file): Use internal_file_lock to convert system time to
 459         file_time_type.
 460         (last_write_time(const path&, error_code&)): Likewise.
 461         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
 462
 463 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
 464
 465         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
 466         for const member functions of std::basic_string.
 467         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
 468         in C++17.
 469         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
 470         Make non-standard constructor private.
 471         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
 472         Likewise.
 473         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
 474         explicit instantiations for C++17 as well as earlier dialects.
 475         * src/c++17/Makefile.am: Add new source files.
 476         * src/c++17/Makefile.in: Regenerate.
 477         * src/c++17/cow-string-inst.cc: New file defining explicit
 478         instantiations for basic_string member functions added in C++17.
 479         * src/c++17/string-inst.cc: Likewise.
 480
 481         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
 482         copy/move constructors for old std::basic_string.
 483         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
 484         (basic_string::reference, basic_string::const_reference): Define
 485         as plain references for C++11 and later.
 486         (basic_string::basic_string()): Put constructor body outside
 487         preprocessor conditional groups.
 488         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
 489         instead of copying it.
 490         (basic_string::basic_string(const basic_string&, const _Alloc&)):
 491         Define.
 492         (basic_string::basic_string(basic_string&&, const _Alloc&)):
 493         Define.
 494         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
 495         cases for old basic_string.
 496         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
 497         allocator-extended constructors unconditionally. Add extra members to
 498         allocator type when using old string ABI.
 499         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
 500         for old string ABI.
 501         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
 502
 503         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
 504         -fno-inline added to test flags.
 505
 506         * testsuite/21_strings/basic_string/requirements/
 507         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
 508
 509         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
 510         assertion failures with old std::string ABI.
 511
 512         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
 513         with ...
 514         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
 515         functions that will only erase elements at the end.
 516         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
 517         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
 518         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
 519         of erase(p, end()).
 520         (path::_List::pop_back()): Define.
 521         (path::_List::_M_erase_from(const_iterator)): Define.
 522         (path::operator/=(const path&)): Use pop_back to remove last component
 523         and _M_erase_from to remove multiple components.
 524         (path::_M_append(basic_string_view<value_type>)): Likewise.
 525         (path::operator+=(const path&)): Likewise.
 526         (path::_M_concat(basic_string_view<value_type>)): Likewise.
 527         (path::remove_filename()): Likewise.
 528         (path::lexically_normal()): Use _List::_Impl iterators instead of
 529         path::iterator. Use pop_back to remove components from the end. Clear
 530         trailing filename, instead of using erase(const_iterator) to remove
 531         a non-final component.
 532         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
 533         additional cases.
 534         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
 535
 536         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
 537         incorrect treatment of empty filename after trailing slash.
 538         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
 539
 540         * testsuite/21_strings/basic_string/modifiers/assign/char/
 541         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
 542         to test flags.
 543         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
 544         move_assign_optim.cc: Likewise.
 545
 546 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
 547             Jakub Jelinek  <jakub@redhat.com>
 548
 549         PR libstdc++/88607
 550         * include/experimental/memory: Replace UTF-8 quote characters.
 551         * include/std/future: Replace UTF-8 "em dash" characters.
 552
 553 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
 554
 555         PR libstdc++/88607
 556         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
 557         * include/debug/forward_list: Likewise.
 558         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
 559         character.
 560         * include/experimental/chrono: Likewise.
 561         * include/experimental/functional: Likewise.
 562         * include/experimental/ratio: Likewise.
 563         * include/experimental/system_error: Likewise.
 564         * include/experimental/tuple: Likewise.
 565         * include/experimental/type_traits: Likewise.
 566         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
 567         * include/parallel/multiseq_selection.h: Likewise.
 568
 569         PR libstdc++/88681
 570         * config/abi/pre/gnu.ver: Add missing exports.
 571         * testsuite/22_locale/collate_byname/88681.cc: New test.
 572         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
 573         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
 574
 575 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
 576
 577         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
 578         initializer_list<value_type> and from input iterator ranges.
 579         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
 580
 581         * testsuite/experimental/string_view/element_access/char/empty.cc:
 582         Fix year range in copyright header.
 583
 584 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
 585
 586         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
 587         Fix year range in copyright header.
 588
 589 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
 590
 591         Update copyright years.
 592 \f
 593 Copyright (C) 2019 Free Software Foundation, Inc.
 594
 595 Copying and distribution of this file, with or without modification,
 596 are permitted in any medium without royalty provided the copyright
 597 notice and this notice are preserved.