libstdc++-v3/ChangeLog

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