libstdc++-v3/ChangeLog

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