libstdc++-v3/ChangeLog

   1 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * doc/xml/manual/using.xml: Use link element instead of xref.
   4         * doc/html/*: Regenerate.
   5
   6         * include/bits/fs_path.h (path::format): Add fixed underlying type.
   7
   8 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
   9
  10         PR libstdc++/89477
  11         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
  12         parameters in deduction guides.
  13         * include/debug/multimap.h (multimap): Likewise.
  14         * include/debug/set.h (multimap): Likewise.
  15         * include/debug/multiset.h (multimap): Likewise.
  16         * include/debug/unordered_map (unordered_map): Likewise.
  17         (unordered_multimap): Likewise.
  18         * include/debug/unordered_set (unordered_set): Likewise.
  19         (unordered_multiset): Likewise.
  20
  21         PR libstdc++/89608
  22         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
  23         Invalidate all iterators in case of rehash.
  24         (unordered_multimap<>::_M_check_rehashed): Likewise.
  25         * include/debug/unordered_set
  26         (unordered_set<>::_M_check_rehashed): Likewise.
  27         (unordered_multiset<>::_M_check_rehashed): Likewise.
  28         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
  29
  30 2019-03-07  Andreas Schwab  <schwab@suse.de>
  31
  32         * config/abi/post/riscv64-linux-gnu: New directory.
  33         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
  34
  35 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
  36
  37         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
  38         compile test to run. Fix typo.
  39
  40         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
  41         * doc/html/*: Regenerate.
  42
  43         P0356R5 Simplified partial function application
  44         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
  45         helpers for bind_front.
  46         (bind_front, __cpp_lib_bind_front): Define.
  47         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
  48
  49 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
  50
  51         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
  52         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
  53         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
  54         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
  55
  56 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
  57
  58         PR libstdc++/86655 - std::assoc_legendre should not constrain
  59         the value of m (or x).
  60         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
  61         __sph_legendre): If degree > order Don't throw, return 0.
  62         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
  63         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
  64         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
  65         * testsuite/tr1/5_numerical_facilities/special_functions/
  66         02_assoc_legendre/pr86655.cc: New test.
  67         * testsuite/tr1/5_numerical_facilities/special_functions/
  68         22_sph_legendre/pr86655.cc: New test.
  69
  70 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
  71
  72         Rewrite variant.
  73         Also PR libstdc++/85517
  74         * include/std/variant (__do_visit): New.
  75         (__variant_cast): Likewise.
  76         (__variant_cookie): Likewise.
  77         (__erased_*): Remove.
  78         (_Variant_storage::_S_vtable): Likewise.
  79         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
  80         (_Variant_storage::__M_reset): Adjust.
  81         (__variant_construct): New.
  82         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
  83         __variant_construct.
  84         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
  85         (_Move_ctor_base::__M_destructive_copy): New.
  86         (_Move_ctor_base::__M_destructive_move): Adjust to use
  87         __variant_construct.
  88         (_Copy_assign_base::operator=): Adjust to use __do_visit.
  89         (_Copy_assign_alias): Adjust to check both copy assignment
  90         and copy construction for triviality.
  91         (_Move_assign_base::operator=): Adjust to use __do_visit.
  92         (_Multi_array): Add support for visitors that accept and return
  93         a __variant_cookie.
  94         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
  95         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
  96         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
  97         a __variant_cookie temporary for a variant that is valueless and..
  98         (__gen_vtable_impl::__visit_invoke): ..adjust here.
  99         (__gen_vtable::_Array_type): Conditionally make space for
 100         the __variant_cookie visitor case.
 101         (__variant_construct_by_index): New.
 102         (get_if): Adjust to use std::addressof.
 103         (relops): Adjust to use __do_visit.
 104         (variant): Add __variant_cast and __variant_construct_by_index
 105         as friends.
 106         (variant::emplace): Use _M_reset() and __variant_construct_by_index
 107         instead of self-destruction.
 108         (variant::swap): Adjust to use __do_visit.
 109         (visit): Reimplement in terms of __do_visit.
 110         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
 111         * testsuite/20_util/variant/compile.cc: Adjust.
 112         * testsuite/20_util/variant/run.cc: Likewise.
 113
 114 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
 115
 116         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
 117         constant.
 118         * testsuite/experimental/feat-char8_t.cc: Likewise.
 119
 120          * include/std/type_traits [C++20] (is_bounded_array)
 121          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
 122          Define.
 123          * testsuite/20_util/is_bounded_array/requirements/
 124          explicit_instantiation.cc: New test.
 125          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
 126          test.
 127          * testsuite/20_util/is_bounded_array/value.cc: New test.
 128          * testsuite/20_util/is_unbounded_array/requirements/
 129          explicit_instantiation.cc: New test.
 130          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
 131          * test.
 132          * testsuite/20_util/is_unbounded_array/value.cc: New test.
 133
 134         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
 135         Add constexpr.
 136         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
 137
 138 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
 139
 140         * include/c_compatibility/math.h [C++20] (lerp): Add using
 141         declaration.
 142         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
 143         (__lerp): Define function template to implement lerp.
 144         (lerp(float, float, float), lerp(double, double, double))
 145         (lerp(long double, long double, long double)): Define for C++20.
 146         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
 147         (midpoint(T, T), midpoint(T*, T*)): Define.
 148         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
 149         * testsuite/26_numerics/lerp.cc: New test.
 150         * testsuite/26_numerics/midpoint/floating.cc: New test.
 151         * testsuite/26_numerics/midpoint/integral.cc: New test.
 152         * testsuite/26_numerics/midpoint/pointer.cc: New test.
 153
 154 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
 155
 156         PR libstdc++/88996 Implement P0439R0
 157         Make std::memory_order a scoped enumeration.
 158         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
 159         add variables for the old enumerators.  Adjust calls.
 160         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
 161         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
 162
 163 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
 164
 165         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
 166         directive.
 167
 168         * include/std/memory_resource (polymorphic_allocator): Add default
 169         template argument for C++20.
 170         (polymorphic_allocator::allocate_bytes)
 171         (polymorphic_allocator::deallocate_bytes)
 172         (polymorphic_allocator::allocate_object)
 173         (polymorphic_allocator::deallocate_object)
 174         (polymorphic_allocator::new_object)
 175         (polymorphic_allocator::delete_object): New member functions for
 176         C++20.
 177         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
 178         test.
 179
 180 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
 181
 182         PR libstdc++/89562
 183         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
 184         mode for mingw.
 185
 186 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
 187
 188         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
 189         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
 190
 191         * include/std/memory (uses_allocator_construction_args): New set of
 192         overloaded functions.
 193         (make_obj_using_allocator, uninitialized_construct_using_allocator):
 194         New functions.
 195         * include/std/memory_resource (polymorphic_allocator::construct)
 196         [__cplusplus > 201703l]: Replace all overloads with a single function
 197         using uses_allocator_construction_args.
 198         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
 199         test.
 200         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
 201
 202 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
 203
 204         PR libstdc++/89466
 205         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
 206         stylesheet directories before check for xsltproc. Try to use
 207         xmlcatalog to find local stylesheet directory before trying hardcoded
 208         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
 209         check to look for the same stylesheet as doc/Makefile.am uses. Don't
 210         use xsltproc if xmlcatalog fails to find a local stylesheet.
 211         * configure.ac: Check for xmlcatalog.
 212         * Makefile.in: Regenerate.
 213         * configure: Likewise.
 214         * doc/Makefile.in: Likewise.
 215         * include/Makefile.in: Likewise.
 216         * libsupc++/Makefile.in: Likewise.
 217         * po/Makefile.in: Likewise.
 218         * python/Makefile.in: Likewise.
 219         * src/Makefile.in: Likewise.
 220         * src/c++11/Makefile.in: Likewise.
 221         * src/c++17/Makefile.in: Likewise.
 222         * src/c++98/Makefile.in: Likewise.
 223         * src/filesystem/Makefile.in: Likewise.
 224         * testsuite/Makefile.in: Likewise.
 225
 226 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
 227
 228         PR libstdc++/89477
 229         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
 230         container deduction guides.
 231         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
 232         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
 233         parameters in deduction guides.
 234         * include/bits/stl_multimap.h (multimap): Likewise.
 235         * include/bits/stl_multiset.h (multiset): Likewise.
 236         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
 237         * include/bits/stl_set.h (set): Likewise.
 238         * include/bits/stl_stack.h (stack): Likewise.
 239         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
 240         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
 241         constrain parameters in deduction guides.
 242         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
 243         Likewise.
 244         * testsuite/23_containers/map/cons/deduction.cc: Test additional
 245         deduction cases.
 246         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
 247         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
 248         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
 249         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
 250         Likewise.
 251         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
 252         Likewise.
 253         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
 254
 255         PR libstdc++/89416
 256         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
 257         to class template and partial specialization using void_t.
 258         (__is_copy_insertable, __is_move_insertable): Adjust base class.
 259
 260 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         PR libstdc++/89416
 263         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
 264         copy and move members public.
 265
 266 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
 267
 268         * include/std/type_traits (__underlying_type_impl): New helper to
 269         make underlying_type SFINAE-friendly.
 270         (underlying_type): Derive from __underlying_type_impl.
 271         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
 272         test.
 273
 274         PR libstdc++/89446
 275         * include/bits/char_traits.h (__constant_char_array): Check index is
 276         in range before dereferencing.
 277         (char_traits<char>::compare, char_traits<char>::find)
 278         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
 279         immediately if n is zero.
 280         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
 281         Remove workarounds for PR 67026.
 282         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
 283         New test.
 284         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
 285         New test.
 286
 287 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
 288
 289         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
 290         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
 291
 292 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
 293
 294         PR libstdc++/89402
 295         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
 296         type to std::size_t and argument to type to long double.
 297
 298 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
 299
 300         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
 301         * config/abi/post/sparc64-linux-gnu: New directory.
 302         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
 303         * config/abi/post/sparc64-linux-gnu/32: New directory.
 304         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
 305
 306 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
 307
 308         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
 309         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
 310         test.
 311
 312 2019-02-22  Tom Honermann  <tom@honermann.net>
 313
 314         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
 315         printers for u8string and u8string_view.
 316
 317 2019-02-22  Tom Honermann  <tom@honermann.net>
 318
 319         * testsuite/18_support/byte/ops.cc: Validate
 320         std::to_integer<char8_t>, std::to_integer<char16_t>, and
 321         std::to_integer<char32_t>.
 322         * testsuite/18_support/numeric_limits/dr559.cc: Validate
 323         std::numeric_limits<char8_t>.
 324         * testsuite/18_support/numeric_limits/lowest.cc: Validate
 325         std::numeric_limits<char8_t>::lowest().
 326         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
 327         std::numeric_limits<char8_t>::max_digits10.
 328         * testsuite/18_support/type_info/fundamental.cc: Validate
 329         typeinfo for char8_t.
 330         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
 331         std::from_chars with char8_t.
 332         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
 333         Validate explicit instantiation of std::hash<char8_t>.
 334         * testsuite/20_util/is_integral/value.cc: Validate
 335         std::is_integral<char8_t>.
 336         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
 337         Validate std::make_signed<char8_t>.
 338         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
 339         Validate u8string construction from char8_t sources.
 340         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
 341         std::pmr::u8string.
 342         * testsuite/21_strings/basic_string_view/operations/compare/
 343         char/70483.cc: Validate substr operations on u8string_view.
 344         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
 345         the u8string_view typedef is defined.
 346         * testsuite/21_strings/char_traits/requirements/
 347         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
 348         member functions.
 349         * testsuite/21_strings/char_traits/requirements/
 350         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
 351         constexpr member functions.
 352         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
 353         that the u8string typedef is defined.
 354         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
 355         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
 356         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
 357         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
 358         numbers.
 359         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
 360         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
 361         Likewise.
 362         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
 363         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
 364         Validate std::atomic<char8_t>::is_always_lock_free
 365         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
 366         Update line numbers.
 367         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
 368         Likewise.
 369         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
 370         Likewise.
 371         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
 372         Validate std::experimental::pmr::u8string.
 373         * testsuite/experimental/string_view/typedefs.cc: Validate that the
 374         u8string_view typedef is defined.
 375         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
 376         char32_t to the typelists.
 377
 378 2019-02-22  Tom Honermann  <tom@honermann.net>
 379
 380         * include/ext/typelist.h: Constrain a partial specialization of
 381         typelist::detail::append_ to only match chain<T1,T2>.
 382
 383 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
 384
 385         PR libstdc++/89416
 386         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
 387         class template with class. Replace move and copy member types with
 388         member alias templates, so they are only instantiated when needed.
 389         (__is_copy_insertable, __is_move_insertable): Adjust base class.
 390         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
 391         test for C++11/14/17 as well.
 392         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
 393         test.
 394
 395 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
 396
 397         PR libstdc++/89402
 398         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
 399         _GLIBCXX_PURE to the alias declaration.
 400
 401 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
 402
 403         * testsuite/21_strings/basic_string/literals/types.cc
 404         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
 405         * testsuite/21_strings/basic_string/literals/values.cc
 406         [_GLIBCXX_USE_CHAR8_T]: Likewise.
 407         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
 408         potentially having different type.
 409         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
 410         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
 411         to char.
 412         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
 413         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
 414         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
 415         string literals only using basic character set.
 416         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
 417         u8 literals to char.
 418         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
 419         Test ATOMIC_CHAR8_T_LOCK_FREE.
 420         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
 421         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
 422         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
 423         * testsuite/experimental/string_view/literals/types.cc
 424         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
 425         literal.
 426         * testsuite/experimental/string_view/literals/values.cc
 427         [_GLIBCXX_USE_CHAR8_T]: Likewise.
 428
 429 2019-02-19  Tom Honermann  <tom@honermann.net>
 430
 431         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
 432         from char16_32_t.cc; validates numeric_limits<char8_t>.
 433         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
 434         test cloned from types.cc; validates operator""s for char8_t
 435         returns u8string.
 436         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
 437         test cloned from values.cc; validates construction and comparison
 438         of u8string values.
 439         * testsuite/21_strings/basic_string/requirements/
 440         /explicit_instantiation/char8_t/1.cc: New test cloned from
 441         char16_t/1.cc; validates explicit instantiation of
 442         basic_string<char8_t>.
 443         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
 444         New test cloned from types.cc; validates operator""sv for char8_t
 445         returns u8string_view.
 446         * testsuite/21_strings/basic_string_view/literals/
 447         values-char8_t.cc: New test cloned from values.cc; validates
 448         construction and comparison of u8string_view values.
 449         * testsuite/21_strings/basic_string_view/requirements/
 450         explicit_instantiation/char8_t/1.cc: New test cloned from
 451         char16_t/1.cc; validates explicit instantiation of
 452         basic_string_view<char8_t>.
 453         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
 454         New test cloned from char16_t/65049.cc; validates that
 455         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
 456         * testsuite/21_strings/char_traits/requirements/char8_t/
 457         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
 458         that char_traits<char8_t> member typedefs are present and correct.
 459         * testsuite/21_strings/char_traits/requirements/
 460         explicit_instantiation/char8_t/1.cc: New test cloned from
 461         char16_t/1.cc; validates explicit instantiation of
 462         char_traits<char8_t>.
 463         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
 464         from char16_t.cc: validates
 465         codecvt<char16_t, char8_t, mbstate_t>.
 466         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
 467         from char32_t.cc: validates
 468         codecvt<char32_t, char8_t, mbstate_t>.
 469         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
 470         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
 471         codecvt<char32_t, char8_t, std::mbstate_t>.
 472         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
 473         test cloned from string.cc; validates filesystem::path construction
 474         from char8_t input.
 475         * testsuite/experimental/feat-char8_t.cc: New test; validates that
 476         the __cpp_lib_char8_t feature test macro is defined with the
 477         correct value.
 478         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
 479         New test cloned from string.cc; validates filesystem::path
 480         construction from char8_t input.
 481         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
 482         test cloned from types.cc; validates operator""sv for char8_t
 483         returns u8string_view.
 484         * testsuite/experimental/string_view/literals/values-char8_t.cc:
 485         New test cloned from values.cc; validates construction and
 486         comparison of u8string_view values.
 487         * testsuite/experimental/string_view/requirements/
 488         explicit_instantiation/char8_t/1.cc: New test cloned from
 489         char16_t/1.cc; validates explicit instantiation of
 490         basic_string_view<char8_t>.
 491         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
 492         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
 493         enabled.
 494
 495 2019-02-19  Tom Honermann  <tom@honermann.net>
 496
 497         P0482R5 char8_t: Standard library support
 498         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
 499         typeinfo symbols for char8_t.
 500         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
 501         (GLIBCXX_3.4.26): Add symbols for specializations of
 502         numeric_limits and codecvt that involve char8_t.
 503         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
 504         * include/bits/atomic_base.h: Add atomic_char8_t.
 505         * include/bits/basic_string.h: Add std::hash<u8string> and
 506         operator""s(const char8_t*, size_t).
 507         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
 508         __cpp_lib_char8_t.
 509         * include/bits/char_traits.h: Add char_traits<char8_t>.
 510         * include/bits/codecvt.h: Add
 511         codecvt<char16_t, char8_t, mbstate_t>,
 512         codecvt<char32_t, char8_t, mbstate_t>,
 513         codecvt_byname<char16_t, char8_t, mbstate_t>, and
 514         codecvt_byname<char32_t, char8_t, mbstate_t>.
 515         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
 516         recognize char8_t as an integral type.
 517         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
 518         char8_t.
 519         (path::u8string): Return std::u8string when char8_t support is
 520         enabled.
 521         (path::generic_u8string): Likewise.
 522         (path::_S_convert): Handle conversion from char8_t input.
 523         (path::_S_str_convert): Likewise.
 524         * include/bits/functional_hash.h: Add hash<char8_t>.
 525         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
 526         char8_t.
 527         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
 528         for new char8_t specializations.
 529         * include/bits/localefwd.h: Add missing declarations of
 530         codecvt<char16_t, char, mbstate_t> and
 531         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
 532         codecvt<char16_t, char8_t, mbstate_t> and
 533         codecvt<char32_t, char8_t, mbstate_t>.
 534         * include/bits/postypes.h: Add u8streampos
 535         * include/bits/stringfwd.h: Add declarations of
 536         char_traits<char8_t> and u8string.
 537         * include/c_global/cstddef: Add __byte_operand<char8_t>.
 538         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
 539         Recognize char8_t.
 540         (path::u8string): Return std::u8string when char8_t support is
 541         enabled.
 542         (path::generic_u8string): Likewise.
 543         (path::_S_convert): Handle conversion from char8_t input.
 544         (path::_S_str_convert): Likewise.
 545         * include/experimental/string: Add u8string.
 546         * include/experimental/string_view: Add u8string_view,
 547         hash<experimental::u8string_view>, and
 548         operator""sv(const char8_t*, size_t).
 549         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
 550         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
 551         as a character type.
 552         * include/std/limits: Add numeric_limits<char8_t>.
 553         * include/std/string_view: Add u8string_view,
 554         hash<experimental::u8string_view>, and
 555         operator""sv(const char8_t*, size_t).
 556         * include/std/type_traits: Add __is_integral_helper<char8_t>,
 557         __make_unsigned<char8_t>, and __make_signed<char8_t>.
 558         * libsupc++/atomic_lockfree_defines.h: Define
 559         ATOMIC_CHAR8_T_LOCK_FREE.
 560         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
 561         codecvt.cc and limits.cc so that char8_t specializations of
 562         numeric_limits and codecvt and emitted.
 563         * src/c++11/Makefile.in: Likewise.
 564         * src/c++11/codecvt.cc: Define members of
 565         codecvt<char16_t, char8_t, mbstate_t>,
 566         codecvt<char32_t, char8_t, mbstate_t>,
 567         codecvt_byname<char16_t, char8_t, mbstate_t>, and
 568         codecvt_byname<char32_t, char8_t, mbstate_t>.
 569         * src/c++11/limits.cc: Define members of
 570         numeric_limits<char8_t>.
 571         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
 572         locale_init.cc and localename.cc.
 573         * src/c++98/Makefile.in: Likewise.
 574         * src/c++98/locale_init.cc: Add initialization for the
 575         codecvt<char16_t, char8_t, mbstate_t> and
 576         codecvt<char32_t, char8_t, mbstate_t> facets.
 577         * src/c++98/localename.cc: Likewise.
 578         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
 579
 580 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
 581
 582         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
 583         * 27_io/filesystem/operations/resize_file.cc: Likewise.
 584         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
 585
 586 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
 587
 588         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
 589         * doc/html/*: Regenerate.
 590
 591         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
 592         * doc/html/*: Regenerate.
 593
 594         * doc/xml/manual/intro.xml: Document LWG 2586 status.
 595         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
 596         allocator type in is_constructible checks.
 597         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
 598         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
 599         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
 600         problematic type from LWG 2586 discussion.
 601         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
 602         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
 603
 604         * configure.ac: Check for C11 timespec_get function.
 605         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
 606         (openbsd): Likewise
 607         * config.h.in: Regenerate.
 608         * configure: Regenerate.
 609         * include/c_global/ctime (timespec, timespec_get): Add to namespace
 610         std for C++17 and up.
 611
 612         * doc/xml/manual/intro.xml: Document LWG 2537 status.
 613         * include/bits/stl_queue.h
 614         (priority_queue(const Compare&, const Container&, const Alloc&))
 615         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
 616         make_heap.
 617         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
 618
 619         * doc/xml/manual/intro.xml: Document LWG 2566 status.
 620         * include/bits/stl_queue.h (queue, priority_queue): Add static
 621         assertions to enforce LWG 2566 requirement on value_type.
 622         * include/bits/stl_stack.h (stack): Likewise.
 623
 624         PR middle-end/89303
 625         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
 626
 627         * doc/xml/manual/intro.xml: Document LWG 2735 status.
 628         * include/bits/std_abs.h: Add comment about LWG 2735.
 629         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
 630
 631 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
 632
 633         PR libstdc++/89345
 634         * include/std/version [__cpp_impl_destroying_delete]
 635         (__cpp_lib_destroying_delete): Only define for C++2a and later.
 636         * libsupc++/new [__cpp_impl_destroying_delete]
 637         (__cpp_lib_destroying_delete): Likewise.
 638         (destroying_delete_t, destroying_delete): Likewise, but define even
 639         when __cpp_impl_destroying_delete is not defined.
 640         * testsuite/18_support/destroying_delete.cc: New test.
 641
 642 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
 643
 644         PR libstdc++/89023
 645         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
 646         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
 647         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
 648         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
 649
 650 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
 651
 652         PR libstdc++/71044
 653         * include/bits/fs_path.h (path::has_root_name)
 654         (path::has_root_directory, path::has_root_path)
 655         (path::has_relative_path, path::has_parent_path)
 656         (path::has_filename, path::has_stem, path::has_extension)
 657         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
 658         noexcept.
 659         * src/c++17/fs_path.cc (path::has_root_name)
 660         (path::has_root_directory, path::has_root_path)
 661         (path::has_relative_path, path::has_parent_path)
 662         (path::has_filename, path::_M_find_extension): Add noexcept.
 663
 664 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
 665
 666         PR libstdc++/89102 (partial)
 667         * include/std/type_traits (common_type<>): Define.
 668         (common_type<T>): Derive from common_type<T, T>.
 669         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
 670         Test zero-length template argument list.
 671         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
 672         Test additional single argument cases.
 673         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
 674         Adjust expected error.
 675
 676 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
 677
 678         PR libstdc++/89128
 679         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
 680         guides.
 681         * include/bits/stl_stack.h (stack): Likewise.
 682         * testsuite/23_containers/priority_queue/deduction.cc: New test.
 683         * testsuite/23_containers/queue/deduction.cc: New test.
 684         * testsuite/23_containers/stack/deduction.cc: New test.
 685
 686         PR libstdc++/89194
 687         * include/std/type_traits (__is_convertible_helper)
 688         (__is_convertible_helper<_From, _To, false>): Revert changes to
 689         support is_nothrow_convertible.
 690         (__is_nt_convertible_helper): New helper.
 691         (is_nothrow_convertible): Use __is_nt_convertible_helper.
 692
 693         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
 694         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
 695
 696         PR libstdc++/89130
 697         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
 698         __is_alloc_insertable_impl. Replace single type member with two
 699         members, one for each of copy and move insertable.
 700         (__is_move_insertable): New trait for internal use.
 701         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
 702         (vector::_S_nothrow_relocate(true_type)): New functions to
 703         conditionally check if __relocate_a can throw.
 704         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
 705         on __is_move_insertable.
 706         (vector::_S_do_relocate): New overloaded functions to conditionally
 707         call __relocate_a.
 708         (vector::_S_relocate): New function that dispatches to _S_do_relocate
 709         based on _S_use_relocate.
 710         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 711         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
 712         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
 713
 714         PR libstdc++/89090
 715         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
 716         parameter unnamed. Add message to static assertion.
 717         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 718         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
 719         in C++11 code.
 720
 721 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
 722
 723         PR libstdc++/87106
 724         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
 725         Rename...
 726         (__is_bitwise_relocatable): ... to this.
 727         (__relocate_a_1): Adapt.
 728         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
 729         (__is_bitwise_relocatable): ... to this.
 730
 731 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
 732
 733         PR libstdc++/89117
 734         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
 735         final component as well as from _M_pathname. Append the dot using
 736         operator+= instead of only to _M_pathname.
 737         (path::_M_find_extension): Reformat slightly.
 738         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
 739         Add more test cases.
 740
 741 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
 742
 743         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
 744
 745 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
 746
 747         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
 748         constexpr specifiers from arg and proj.
 749
 750         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
 751         __shared_ptr instantiations used by gcc4-compatible ABI.
 752
 753         * include/experimental/forward_list (experimental::erase): Qualify
 754         call to erase_if.
 755         * include/experimental/list (experimental::erase): Likewise.
 756         * include/std/forward_list (std::erase): Likewise.
 757         * include/std/list (std::erase): Likewise.
 758
 759         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
 760         C++2a.
 761         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
 762         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
 763         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
 764         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
 765         * testsuite/ext/array_allocator/26875.cc: Likewise.
 766         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
 767         * testsuite/util/replacement_memory_operators.h: Likewise.
 768         * testsuite/util/testsuite_allocator.h: Likewise.
 769
 770         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
 771         normal mode vector, even for debug mode.
 772         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
 773         Define alias template for normal mode vector.
 774
 775 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
 776
 777         PR libstdc++/68737
 778         * config/locale/generic/c_locale.h (__convert_from_v)
 779         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 780         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 781         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
 782         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
 783
 784 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
 785
 786         PR libstdc++/88840
 787         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
 788         data member with static member function _S_use_relocate().
 789         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
 790         (vector::_M_default_append): Use _S_use_relocate() instead of
 791         __use_relocate.
 792
 793         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
 794         sign of results.
 795
 796 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
 797
 798         PR libstdc++/88740
 799         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
 800         write to stderr instead of using printf.
 801
 802 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
 803
 804         PR libstdc++/86590
 805         * include/bits/char_traits.h (__constant_string_p,
 806         __constant_char_array_p): Use __builtin_is_constant_evaluated if
 807         available.
 808
 809 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
 810
 811         Implement C++20 P0600r1.
 812         * include/backward/hash_map: Add nodiscard attribute to empty.
 813         * include/backward/hash_set: Likewise.
 814         * backward/hashtable.h: Likewise.
 815         * include/bits/basic_string.h: Likewise.
 816         * include/bits/forward_list.h: Likewise.
 817         * include/bits/hashtable.h: Likewise.
 818         * include/bits/regex.h: Likewise.
 819         * include/bits/stl_deque.h: Likewise.
 820         * include/bits/stl_list.h: Likewise.
 821         * include/bits/stl_map.h: Likewise.
 822         * include/bits/stl_multimap.h: Likewise.
 823         * include/bits/stl_multiset.h: Likewise.
 824         * include/bits/stl_queue.h: Likewise.
 825         * include/bits/stl_set.h: Likewise.
 826         * include/bits/stl_stack.h: Likewise.
 827         * include/bits/stl_tree.h: Likewise.
 828         * include/bits/stl_vector.h: Likewise.
 829         * include/bits/unordered_map.h: Likewise.
 830         * include/bits/unordered_set.h: Likewise.
 831         * include/debug/array: Likewise.
 832         * include/experimental/any: Likewise.
 833         * include/experimental/bits/fs_path.h: Likewise.
 834         * include/experimental/internet: Likewise.
 835         * include/experimental/string_view: Likewise.
 836         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
 837         Likewise.
 838         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
 839         Likewise.
 840         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
 841         Likewise.
 842         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
 843         Likewise.
 844         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
 845         Likewise.
 846         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
 847         Likewise.
 848         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
 849         Likewise.
 850         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
 851         Likewise.
 852         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 853         info_fn_imps.hpp: Likewise.
 854         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
 855         left_child_next_sibling_heap_.hpp: Likewise.
 856         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
 857         Likewise.
 858         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
 859         Likewise.
 860         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
 861         Likewise.
 862         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
 863         Likewise.
 864         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
 865         Likewise.
 866         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
 867         Likewise.
 868         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
 869         Likewise.
 870         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
 871         * include/ext/pb_ds/trie_policy.hpp: Likewise.
 872         * include/ext/rope: Likewise.
 873         * include/ext/slist: Likewise.
 874         * include/ext/vstring.h: Likewise.
 875         * include/profile/array: Likewise.
 876         * include/std/array: Likewise.
 877         * include/tr1/array: Likewise.
 878         * include/tr1/hashtable.h: Likewise.
 879         * include/tr1/regex: Likewise.
 880         * include/tr2/dynamic_bitset: Likewise.
 881         * include/bits/alloc_traits.h: Add nodiscard attribute to
 882         allocate.
 883         * include/experimental/memory_resource: Likewise.
 884         * include/ext/alloc_traits.h: Likewise.
 885         * include/ext/array_allocator.h: Likewise.
 886         * include/ext/bitmap_allocator.h: Likewise.
 887         * include/ext/debug_allocator.h: Likewise.
 888         * include/ext/extptr_allocator.h: Likewise.
 889         * include/ext/mt_allocator.h: Likewise.
 890         * include/ext/new_allocator.h: Likewise.
 891         * include/ext/pool_allocator.h: Likewise.
 892         * include/ext/throw_allocator.h: Likewise.
 893         * include/std/scoped_allocator: Likewise.
 894         * libsupc++/eh_alloc.cc: Likewise.
 895         * include/std/future: Add nodiscard attribute to async.
 896         * libsupc++/new: Add nodiscard attribute to new.
 897
 898 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
 899
 900         PR libstdc++/87514
 901         PR libstdc++/87520
 902         PR libstdc++/88782
 903         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
 904         * include/bits/shared_ptr.h
 905         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
 906         (allocate_shared): Change to use new tag type.
 907         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
 908         Declare new member function.
 909         (_Sp_alloc_shared_tag): Define new type.
 910         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
 911         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
 912         _Sp_make_shared_tag::_S_eq to check type_info.
 913         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
 914         Constrain to prevent being called with _Sp_alloc_shared_tag.
 915         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
 916         Replace constructor with ...
 917         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
 918         reference parameter so address of the new object can be returned to
 919         the caller. Obtain the allocator from the tag type.
 920         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
 921         constructor with ...
 922         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
 923         to the __shared_count constructor.
 924         (__allocate_shared): Change to use new tag type.
 925         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
 926
 927 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
 928
 929         * src/c++17/fs_ops.cc
 930         (equivalent(const path&, const path&, error_code&))
 931         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
 932         compare files instead of relying on incomplete info returned by stat.
 933
 934         PR libstdc++/88884
 935         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
 936         if the path is already absolute.
 937         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
 938         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
 939
 940         PR libstdc++/88881
 941         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
 942         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
 943         of filesystem::exists.
 944         (create_directories(const path&, error_code&)): Add assertions.
 945         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
 946         Add workaround for bug in _wstat for paths with trailing slash.
 947         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
 948         for expected behaviour on mingw.
 949         * testsuite/experimental/filesystem/operations/create_directories.cc:
 950         Likewise.
 951         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
 952         "TMP" instead of "TMPDIR" and clean environment before each test. Do
 953         not test permissions on mingw targets.
 954
 955 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
 956
 957         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
 958         constructors and open members taking wide strings. Fix patterns for
 959         filesystem::path members to match wstring_view parameters. Add
 960         exports for shared_ptr members used by directory iterators.
 961         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
 962         error code parameter if the file doesn't exist.
 963         * src/filesystem/ops.cc (remove(const path&, error_code&)):
 964         Likewise.
 965         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
 966         values for mingw targets, where "/" is not an absolute path. Do not
 967         test symlinks on mingw targets.
 968         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
 969         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
 970         on mingw targets.
 971         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
 972         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
 973         that each component of the path is created.
 974         * testsuite/experimental/filesystem/operations/create_directories.cc:
 975         Likewise.
 976         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
 977         permissions on mingw targets.
 978         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
 979         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
 980         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
 981         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
 982         mingw targets.
 983         * testsuite/experimental/filesystem/operations/permissions.cc:
 984         Likewise.
 985         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
 986         symlinks or permissions on mingw targets.
 987         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
 988         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
 989         symlinks on mingw targets.
 990         * testsuite/experimental/filesystem/operations/remove_all.cc:
 991         Likewise.
 992         * testsuite/27_io/filesystem/operations/status.cc: Do not test
 993         permissions on mingw targets.
 994         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
 995         test symlinks on mingw targets.
 996         * testsuite/experimental/filesystem/operations/space.cc: Fix test
 997         for mingw targets.
 998
 999 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
1000
1001         PR libstdc++/88738
1002         Warn about unused comparisons of shared_ptr/unique_ptr
1003         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
1004         * include/bits/shared_ptr.h: Use it for operator ==, !=,
1005         <, <=, >, >= for shared_ptr.
1006         * include/bits/unique_ptr.h: Likewise for unique_ptr.
1007
1008 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
1009
1010         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
1011         as 201611L, because P0497R0 changes are supported.
1012         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
1013
1014         * include/bits/erase_if.h [__cplusplus > 201703L]
1015         (__cpp_lib_erase_if): Only define for C++2a.
1016         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
1017         (__cpp_lib_null_iterators): Define.
1018         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
1019         (__cpp_lib_null_iterators): Define.
1020         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
1021
1022         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
1023         status.
1024         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
1025         Define.
1026         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
1027         changes are supported.
1028         * include/std/optional (__cpp_lib_optional): Likewise.
1029         * include/std/variant (__cpp_lib_variant): Likewise.
1030         * include/std/version [!__STRICT_ANSI__]
1031         (__cpp_lib_uncaught_exceptions): Define as long integer.
1032         [__cplusplus >= 201703L] (__cpp_lib_any)
1033         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
1034         (__cpp_lib_variant): Define for C++17.
1035         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
1036         as long integer.
1037         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
1038         integer.
1039
1040         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
1041
1042 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
1043
1044         PR libstdc++/88811
1045         PR libstdc++/83306
1046         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
1047         before second path.
1048         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
1049         test.
1050
1051 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
1052
1053         * doc/xml/manual/intro.xml: Include new section.
1054         * doc/xml/manual/status_cxx2017.xml: Document more
1055         implementation-defined properties of the library.
1056         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
1057         * doc/html/*: Regenerate.
1058
1059         * include/bits/refwrap.h [__cplusplus > 201703L]
1060         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
1061         (_Reference_wrapper_base_memfun): Do not define for C++2a.
1062         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
1063         for C++2a.
1064         (reference_wrapper::operator()): Add static assertion.
1065         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
1066
1067         * include/std/chrono (duration_values::zero(), duration_values::min())
1068         (duration_values::max()): Add noexcept.
1069         (duration::zero(), duration::min(), duration::max()): Likewise.
1070         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
1071         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
1072         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
1073
1074         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
1075
1076 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
1077
1078         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
1079         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
1080
1081 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
1082
1083         PR libstdc++/88802
1084         * include/bits/functional_hash.h (hash<nullptr_t>): Define
1085         specialization for C++17 (P0513R0, LWG 2817).
1086         * testsuite/20_util/hash/nullptr.cc: New test.
1087
1088         PR libstdc++/88125
1089         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
1090         pattern for std::basic_stringbuf::str().
1091
1092         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
1093         basic_ostream::operator<< patterns.
1094
1095 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
1096
1097         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
1098         test failures on targets with 32-bit time_t.
1099
1100         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
1101         * include/std/deque: Likewise.
1102         * include/std/forward_list: Likewise.
1103         * include/std/list: Likewise.
1104         * include/std/string: Likewise.
1105         * include/std/vector: Likewise.
1106         * include/std/version: Likewise.
1107         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
1108         * testsuite/23_containers/deque/erasure.cc: Likewise.
1109         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
1110         * testsuite/23_containers/list/erasure.cc: Likewise.
1111         * testsuite/23_containers/map/erasure.cc: Likewise.
1112         * testsuite/23_containers/set/erasure.cc: Likewise.
1113         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1114         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
1115         * testsuite/23_containers/vector/erasure.cc: Likewise.
1116
1117         * include/experimental/internet [AI_NUMERICSERV]
1118         (resolver_base::numeric_service): Define conditionally.
1119         * testsuite/experimental/net/internet/resolver/base.cc: Test it
1120         conditionally.
1121         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
1122         Likewise.
1123
1124 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
1125             Jonathan Wakely  <jwakely@redhat.com>
1126
1127         Implement LWG 2221
1128         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
1129         (GLIBCXX_3.4.26): Add new exports.
1130         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
1131         correct list of sources.
1132         * include/Makefile.in: Regenerate.
1133         * include/std/ostream (operator<<(nullptr_t)): New member function.
1134         * src/c++17/ostream-inst.cc: New file.
1135         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
1136         test.
1137
1138 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
1139
1140         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
1141         of the source file containing the caller.
1142         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
1143         directories created by test.
1144         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1145         Likewise.
1146         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
1147         Likewise.
1148         * testsuite/experimental/filesystem/iterators/
1149         recursive_directory_iterator.cc: Likewise.
1150
1151 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
1152
1153         PR tree-optimization/88775
1154         * include/bits/stl_function.h (greater<_Tp*>::operator(),
1155         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
1156         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
1157         instead of __builtin_constant_p if available.  Don't bother with
1158         the pointer comparison in C++11 and earlier.
1159
1160 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
1161
1162         PR other/16615
1163
1164         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
1165         with "cannot".
1166
1167 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
1168
1169         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
1170         for filesystem::path. Give variables more distinctive names.
1171
1172         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
1173         member function to perform non-trivial assignment.
1174         (_Optional_payload_base::_M_move_assign): Likewise.
1175         (_Optional_payload<T, true, false, true>::operator=)
1176         (_Optional_payload<T, true, true, false>::operator=)
1177         (_Optional_payload<T, true, false, false>::operator=): Call
1178         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
1179
1180         PR libstdc++/88204
1181         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
1182         test std::complex<long double> if long double format is IBM128.
1183         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
1184         Likewise.
1185
1186 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
1187
1188         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
1189         for old std::unique_ptr layout.
1190         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
1191         to become valueless. Add filesystem::path tests.
1192
1193         PR libstdc++/87855
1194         * include/std/optional (_Optional_payload_base): New class template
1195         for common code hoisted from _Optional_payload specializations. Use
1196         a template for the union, to allow a partial specialization for
1197         types with non-trivial destructors. Add constructors for in-place
1198         initialization to the union.
1199         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
1200         to perform non-trivial copy construction, instead of relying on
1201         non-standard copy elision in a delegating constructor.
1202         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
1203         non-trivial move construction.
1204         (_Optional_payload): Derive from _Optional_payload_base and use it
1205         for everything except the non-trivial assignment operators, which are
1206         defined as needed.
1207         (_Optional_payload<false, C, M>): Derive from the specialization
1208         _Optional_payload<true, false, false> and add a destructor.
1209         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
1210         Forward to corresponding members of _Optional_payload.
1211         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
1212         Hoist common members from _Optional_base.
1213         (_Optional_base): Make all members and base class public.
1214         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
1215         _Optional_base_impl.
1216         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
1217         support for new std::optional layout.
1218         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
1219
1220         PR libstdc++/88066
1221         * include/bits/locale_conv.h: Use <> for includes not "".
1222         * include/ext/random: Likewise.
1223         * include/ext/vstring.h: Likewise.
1224
1225 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1226
1227         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
1228         (GLIBCXX_3.4.21): Likewise.
1229
1230 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
1231
1232         PR libstdc++/88749
1233         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
1234         to match the one that controls whether utimbuf and utime are declared.
1235
1236 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
1237
1238         PR libstdc++/87787
1239         * include/bits/char_traits.h (char_traits::move): Do not pass null
1240         pointers to memmove.
1241         * include/bits/locale_facets.h
1242         (ctype<char>::widen(const char*, const char*, char*)): Do not
1243         pass null pointers to memcpy.
1244         (ctype<char>::narrow(const char*, const char*, char, char*)):
1245         Likewise.
1246         (ctype<char>::do_widen(const char*, const char*, char*)):
1247         Likewise.
1248         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
1249         Likewise.
1250
1251         * doc/xml/manual/spine.xml: Update copyright years.
1252         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
1253         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
1254         for C++17 filesystem library.
1255         * doc/html/*: Regenerate.
1256
1257         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
1258         * config.h.in: Regenerate.
1259         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
1260         alphabetically and add missing entries for copy_symlink,
1261         hard_link_count, rename, and resize_file.
1262         * configure: Regenerate.
1263         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
1264         used unconditionally.
1265         * src/filesystem/ops-common.h (__gnu_posix::truncate)
1266         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
1267         supports truncating to zero length.
1268         * testsuite/27_io/filesystem/operations/all.cc: New test.
1269         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
1270
1271 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
1272
1273         PR libstdc++/86756
1274         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
1275         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
1276         * config.h.in: Regenerate.
1277         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
1278         remaining std::filesystem types and functions.
1279         * configure: Regenerate.
1280         * src/c++17/Makefile.am: Add C++17 filesystem sources.
1281         * src/c++17/Makefile.in: Regenerate.
1282         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
1283         here, and change name of included file.
1284         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
1285         here, and change name of included file.
1286         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
1287         path to dir-common.h.
1288         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
1289         path to ops-common.h. Disable -Wunused-parameter warnings.
1290         (internal_file_clock): Define unconditionally.
1291         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
1292         define.
1293         (do_copy_file, do_space): Move definitions to ops.common.h.
1294         (copy, file_size, hard_link_count, last_write_time, space): Only
1295         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
1296         report an error.
1297         (last_write_time, read_symlink): Remove unused attributes from
1298         parameters.
1299         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
1300         * src/filesystem/Makefile.in: Regenerate.
1301         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
1302         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
1303         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
1304         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
1305         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
1306         dummy types and functions instead of using #error.
1307         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
1308         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
1309         in terms of stat.
1310         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
1311         (do_copy_file, do_space): Move definitions here from std-ops.cc.
1312         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
1313         to account for new namespace.
1314         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
1315         -lstdc++fs from dg-options.
1316         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
1317         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
1318         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
1319         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
1320         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
1321         Likewise.
1322         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
1323         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1324         Likewise.
1325         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
1326         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
1327         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
1328         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
1329         * testsuite/27_io/filesystem/operations/create_directories.cc:
1330         Likewise.
1331         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
1332         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
1333         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
1334         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
1335         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
1336         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
1337         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
1338         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
1339         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
1340         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
1341         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
1342         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
1343         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
1344         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
1345         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
1346         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
1347         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
1348         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
1349         Likewise.
1350         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
1351
1352
1353         PR libstdc++/86756
1354         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
1355         typeinfo and vtables less greedy.
1356         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
1357         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
1358         * src/c++17/Makefile.in: Regenerate.
1359         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
1360         here, and change name of included file.
1361         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
1362         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
1363         from sources.
1364         * src/filesystem/Makefile.in: Regenerate.
1365         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
1366         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
1367         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
1368         from dg-options and remove dg-require-filesystem-ts.
1369         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
1370         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
1371         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
1372         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
1373         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
1374         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
1375         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
1376         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
1377         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
1378         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
1379         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
1380         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
1381         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
1382         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
1383         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
1384         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
1385         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
1386         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
1387         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
1388         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
1389         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
1390         Likewise.
1391         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
1392         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
1393         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
1394         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
1395         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
1396         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
1397         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
1398         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
1399         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
1400         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
1401         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
1402         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
1403         Likewise.
1404         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
1405         Likewise.
1406         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
1407         Likewise.
1408         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
1409         Likewise.
1410         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
1411         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
1412         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
1413         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
1414         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
1415         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
1416         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
1417         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
1418         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
1419         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
1420         Likewise.
1421         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
1422         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
1423         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
1424         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
1425         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
1426
1427         PR libstdc++/87431
1428         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
1429         Check is_trivially_copyable instead of is_scalar.
1430         (variant::emplace<N, Args>(Args&&...)): If construction of the new
1431         contained value can throw and its type is trivially copyable then
1432         construct into a temporary variant and move from it, to provide the
1433         strong exception safety guarantee.
1434         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
1435         Likewise.
1436         * testsuite/20_util/variant/87431.cc: New test.
1437         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
1438         conversion causes valueless state.
1439
1440         PR libstdc++/88607
1441         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
1442         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
1443         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
1444         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
1445         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
1446
1447 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
1448
1449         * include/bits/fs_fwd.h (__file_clock): Define new clock.
1450         (file_time_type): Redefine in terms of __file_clock.
1451         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
1452         overflow.
1453         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
1454         internal linkage.
1455         (internal_file_lock): New helper type for accessing __file_clock.
1456         (do_copy_file): Use internal_file_lock to convert system time to
1457         file_time_type.
1458         (last_write_time(const path&, error_code&)): Likewise.
1459         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
1460
1461 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
1464         for const member functions of std::basic_string.
1465         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
1466         in C++17.
1467         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
1468         Make non-standard constructor private.
1469         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
1470         Likewise.
1471         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
1472         explicit instantiations for C++17 as well as earlier dialects.
1473         * src/c++17/Makefile.am: Add new source files.
1474         * src/c++17/Makefile.in: Regenerate.
1475         * src/c++17/cow-string-inst.cc: New file defining explicit
1476         instantiations for basic_string member functions added in C++17.
1477         * src/c++17/string-inst.cc: Likewise.
1478
1479         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
1480         copy/move constructors for old std::basic_string.
1481         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
1482         (basic_string::reference, basic_string::const_reference): Define
1483         as plain references for C++11 and later.
1484         (basic_string::basic_string()): Put constructor body outside
1485         preprocessor conditional groups.
1486         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
1487         instead of copying it.
1488         (basic_string::basic_string(const basic_string&, const _Alloc&)):
1489         Define.
1490         (basic_string::basic_string(basic_string&&, const _Alloc&)):
1491         Define.
1492         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
1493         cases for old basic_string.
1494         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
1495         allocator-extended constructors unconditionally. Add extra members to
1496         allocator type when using old string ABI.
1497         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
1498         for old string ABI.
1499         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
1500
1501         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
1502         -fno-inline added to test flags.
1503
1504         * testsuite/21_strings/basic_string/requirements/
1505         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
1506
1507         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
1508         assertion failures with old std::string ABI.
1509
1510         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
1511         with ...
1512         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
1513         functions that will only erase elements at the end.
1514         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
1515         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
1516         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
1517         of erase(p, end()).
1518         (path::_List::pop_back()): Define.
1519         (path::_List::_M_erase_from(const_iterator)): Define.
1520         (path::operator/=(const path&)): Use pop_back to remove last component
1521         and _M_erase_from to remove multiple components.
1522         (path::_M_append(basic_string_view<value_type>)): Likewise.
1523         (path::operator+=(const path&)): Likewise.
1524         (path::_M_concat(basic_string_view<value_type>)): Likewise.
1525         (path::remove_filename()): Likewise.
1526         (path::lexically_normal()): Use _List::_Impl iterators instead of
1527         path::iterator. Use pop_back to remove components from the end. Clear
1528         trailing filename, instead of using erase(const_iterator) to remove
1529         a non-final component.
1530         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
1531         additional cases.
1532         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
1533
1534         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
1535         incorrect treatment of empty filename after trailing slash.
1536         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
1537
1538         * testsuite/21_strings/basic_string/modifiers/assign/char/
1539         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
1540         to test flags.
1541         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
1542         move_assign_optim.cc: Likewise.
1543
1544 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
1545             Jakub Jelinek  <jakub@redhat.com>
1546
1547         PR libstdc++/88607
1548         * include/experimental/memory: Replace UTF-8 quote characters.
1549         * include/std/future: Replace UTF-8 "em dash" characters.
1550
1551 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
1552
1553         PR libstdc++/88607
1554         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
1555         * include/debug/forward_list: Likewise.
1556         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
1557         character.
1558         * include/experimental/chrono: Likewise.
1559         * include/experimental/functional: Likewise.
1560         * include/experimental/ratio: Likewise.
1561         * include/experimental/system_error: Likewise.
1562         * include/experimental/tuple: Likewise.
1563         * include/experimental/type_traits: Likewise.
1564         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
1565         * include/parallel/multiseq_selection.h: Likewise.
1566
1567         PR libstdc++/88681
1568         * config/abi/pre/gnu.ver: Add missing exports.
1569         * testsuite/22_locale/collate_byname/88681.cc: New test.
1570         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
1571         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
1572
1573 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
1574
1575         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
1576         initializer_list<value_type> and from input iterator ranges.
1577         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
1578
1579         * testsuite/experimental/string_view/element_access/char/empty.cc:
1580         Fix year range in copyright header.
1581
1582 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
1583
1584         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
1585         Fix year range in copyright header.
1586
1587 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
1588
1589         Update copyright years.
1590 \f
1591 Copyright (C) 2019 Free Software Foundation, Inc.
1592
1593 Copying and distribution of this file, with or without modification,
1594 are permitted in any medium without royalty provided the copyright
1595 notice and this notice are preserved.