libstdc++-v3/ChangeLog

   1 2022-01-17  Patrick Palka  <ppalka@redhat.com>
   2
   3         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
   4         Conditionally define, and use it to conditionally include
   5         fast_float.
   6         (from_chars): Use fast_float for float and double when
   7         USE_LIB_FAST_FLOAT.
   8
   9 2022-01-17  Patrick Palka  <ppalka@redhat.com>
  10
  11         * src/c++17/fast_float/LOCAL_PATCHES: Update.
  12         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
  13         case of over/underflow, return errc::result_out_of_range and don't
  14         modify 'value'.
  15
  16 2022-01-17  Patrick Palka  <ppalka@redhat.com>
  17
  18         * src/c++17/fast_float/LOCAL_PATCHES: Update.
  19         * src/c++17/fast_float/fast_float.h: Apply local modifications.
  20
  21 2022-01-17  Patrick Palka  <ppalka@redhat.com>
  22
  23         * src/c++17/fast_float/LOCAL_PATCHES: New file.
  24         * src/c++17/fast_float/MERGE: New file.
  25         * src/c++17/fast_float/README.md: New file, copied from the
  26         fast_float repository.
  27         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
  28         of the fast_float library.
  29
  30 2022-01-17  Patrick Palka  <ppalka@redhat.com>
  31
  32         * src/c++17/floating_from_chars.cc: Include <bit>.
  33         (ascii_to_hexit, starts_with_ci): Conditionally define.
  34         (__floating_from_chars_hex):  Conditionally define.
  35         (from_chars): Use __floating_from_chars_hex for
  36         chars_format::hex parsing of binary32/64 float/double.
  37         (testsuite/20_util/from_chars/7.cc): New test.
  38         * testsuite/20_util/from_chars/7.cc: New file.
  39
  40 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
  41
  42         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
  43         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
  44         * include/Makefile.am: Add new header.
  45         * include/Makefile.in: Regenerate.
  46         * include/std/stacktrace: New header.
  47         * include/std/version (__cpp_lib_stacktrace): Define.
  48         * Makefile.in: Regenerate.
  49         * config.h.in: Regenerate.
  50         * configure: Regenerate.
  51         * doc/Makefile.in: Regenerate.
  52         * libsupc++/Makefile.in: Regenerate.
  53         * po/Makefile.in: Regenerate.
  54         * python/Makefile.in: Regenerate.
  55         * src/Makefile.am: Regenerate.
  56         * src/Makefile.in: Regenerate.
  57         * src/c++11/Makefile.in: Regenerate.
  58         * src/c++17/Makefile.in: Regenerate.
  59         * src/c++20/Makefile.in: Regenerate.
  60         * src/c++98/Makefile.in: Regenerate.
  61         * src/filesystem/Makefile.in: Regenerate.
  62         * testsuite/Makefile.in: Regenerate.
  63         * src/libbacktrace/Makefile.am: New file.
  64         * src/libbacktrace/Makefile.in: New file.
  65         * src/libbacktrace/backtrace-rename.h: New file.
  66         * src/libbacktrace/backtrace-supported.h.in: New file.
  67         * src/libbacktrace/config.h.in: New file.
  68         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
  69         New proc.
  70         * testsuite/20_util/stacktrace/entry.cc: New test.
  71         * testsuite/20_util/stacktrace/synopsis.cc: New test.
  72         * testsuite/20_util/stacktrace/version.cc: New test.
  73
  74 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
  75
  76         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
  77         names.
  78         * doc/html/manual/status.html: Regenerate.
  79
  80 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
  81
  82         PR libstdc++/103650
  83         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
  84         * include/Makefile.in: Regenerate.
  85         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
  86
  87 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
  88
  89         * include/experimental/bits/simd.h (__floating_point_flags): Do
  90         not rely on the presence of the math_errhandling macro.
  91
  92 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
  93
  94         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
  95         to qualified-id for dependent type.
  96
  97 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
  98
  99         * doc/xml/manual/status_cxx2020.xml: Update.
 100         * doc/html/manual/status.html: Regenerate.
 101
 102 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
 103             Thomas Rodgers  <trodgers@redhat.com>
 104
 105         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
 106         New macro.
 107         (_Sp_atomic): New class template.
 108         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
 109         specializations.
 110         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
 111         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
 112         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
 113         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
 114         test.
 115         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
 116
 117 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
 118
 119         * include/experimental/bits/simd.h: Move feature detection bools
 120         and add __have_avx512bitalg, __have_avx512vbmi2,
 121         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
 122         __have_avx512vnni, __have_avx512vpopcntdq.
 123         (__detail::__machine_flags): New function which returns a unique
 124         uint64 depending on relevant -m and -f flags.
 125         (__detail::__odr_helper): New type alias for either an anonymous
 126         type or a type specialized with the __machine_flags number.
 127         (_SimdIntOperators): Change template parameters from _Impl to
 128         _Tp, _Abi because _Impl now has an __odr_helper parameter which
 129         may be _OdrEnforcer from the anonymous namespace, which makes
 130         for a bad base class.
 131         (many): Either add __odr_helper template parameter or mark as
 132         always_inline.
 133         * include/experimental/bits/simd_detail.h: Add defines for
 134         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
 135         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
 136         * include/experimental/bits/simd_builtin.h: Add __odr_helper
 137         template parameter or mark as always_inline.
 138         * include/experimental/bits/simd_fixed_size.h: Ditto.
 139         * include/experimental/bits/simd_math.h: Ditto.
 140         * include/experimental/bits/simd_scalar.h: Ditto.
 141         * include/experimental/bits/simd_neon.h: Add __odr_helper
 142         template parameter.
 143         * include/experimental/bits/simd_ppc.h: Ditto.
 144         * include/experimental/bits/simd_x86.h: Ditto.
 145
 146 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
 147
 148         * testsuite/22_locale/numpunct/members/char/3.cc:
 149         Require pt_PT locale instead of nl_NL.
 150         (test02): Use pt_PT locale instead of nl_NL.
 151
 152 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
 153
 154         PR libstdc++/91260
 155         PR libstdc++/91383
 156         PR libstdc++/95065
 157         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
 158         attribute.
 159         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
 160         Disable deprecated warnings for base classes.
 161         (_Reference_wrapper_base): Likewise.
 162         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
 163         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
 164         * include/bits/stl_function.h (unary_function, binary_function):
 165         Add deprecated attribute.
 166         (unary_negate, not1, binary_negate, not2, ptr_fun)
 167         (pointer_to_unary_function, pointer_to_binary_function)
 168         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
 169         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
 170         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
 171         attributes.
 172         * include/bits/stl_iterator.h: Disable deprecated warnings for
 173         std::iterator base classes.
 174         * include/bits/stl_iterator_base_types.h (iterator): Add
 175         deprecated attribute.
 176         * include/bits/stl_map.h (map::value_compare): Disable
 177         deprecated warnings for base class.
 178         * include/bits/stl_multimap.h (multimap::value_compare):
 179         Likewise.
 180         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
 181         Add deprecated attribute.
 182         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
 183         * include/bits/stream_iterator.h: Disable deprecated warnings.
 184         * include/bits/streambuf_iterator.h: Likewise.
 185         * include/ext/bitmap_allocator.h: Remove unary_function base
 186         classes.
 187         * include/ext/functional: Disable deprecated warnings.
 188         * include/ext/rope: Likewise.
 189         * include/ext/throw_allocator.h: Likewise.
 190         * include/std/type_traits (result_of): Add deprecated attribute.
 191         * include/tr1/functional: Disable deprecated warnings.
 192         * include/tr1/functional_hash.h: Likewise.
 193         * testsuite/20_util/function_objects/binders/1.cc: Add
 194         -Wno-disable-deprecations.
 195         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
 196         * testsuite/20_util/function_objects/constexpr.cc: Add
 197         dg-warning.
 198         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
 199         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
 200         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
 201         Likewise.
 202         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
 203         Likewise.
 204         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
 205         Likewise.
 206         * testsuite/20_util/reference_wrapper/24803.cc:
 207         Likewise.
 208         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
 209         C++20 and check for absence of nested types.
 210         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
 211         std::binary_function base class.
 212         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
 213         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
 214         std::iterator base class.
 215         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
 216         Likewise.
 217         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
 218         Likewise.
 219         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
 220         Likewise.
 221         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
 222         Likewise.
 223         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
 224         Likewise.
 225         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
 226         Likewise.
 227         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
 228         Likewise.
 229         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
 230         Likewise.
 231         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
 232         Likewise.
 233         * testsuite/25_algorithms/copy/34595.cc:
 234         Likewise.
 235         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
 236         base class.
 237         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
 238         Disable deprecated warnings.
 239         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
 240         Likewise.
 241         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
 242         Likewise.
 243         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
 244         Likewise.
 245         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
 246         Likewise.
 247         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
 248         Likewise.
 249         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
 250         Likewise.
 251         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
 252         Likewise.
 253         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
 254         Likewise.
 255         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
 256         Likewise.
 257         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
 258         Likewise.
 259         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
 260         Likewise.
 261         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
 262         Likewise.
 263         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
 264         Likewise.
 265         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
 266         Likewise.
 267         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
 268         Likewise.
 269         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
 270         Likewise.
 271         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
 272         Likewise.
 273         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
 274         Likewise.
 275         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
 276         Likewise.
 277         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
 278         Likewise.
 279         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
 280         Likewise.
 281         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
 282         Likewise.
 283         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
 284         Likewise.
 285         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
 286         Likewise.
 287         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
 288         Likewise.
 289         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
 290         Likewise.
 291         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
 292         Likewise.
 293         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
 294         Likewise.
 295         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
 296         Likewise.
 297         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
 298         Likewise.
 299         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
 300         Likewise.
 301         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
 302         Likewise.
 303         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
 304         Likewise.
 305         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
 306         Likewise.
 307         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
 308         Likewise.
 309         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
 310         Likewise.
 311         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
 312         Likewise.
 313         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
 314         Likewise.
 315         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
 316         Likewise.
 317         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
 318         Likewise.
 319         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
 320         Likewise.
 321         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
 322         Likewise.
 323         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
 324         Likewise.
 325         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
 326         Likewise.
 327         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
 328         Likewise.
 329         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
 330         Likewise.
 331         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
 332         Likewise.
 333         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
 334         dg-warning.
 335         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
 336         Likewise.
 337         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
 338         Likewise.
 339         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
 340         Disable deprecated warnings.
 341         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
 342         Likewise.
 343         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
 344         std::unary_function base classes.
 345         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
 346         Remove std::iterator base classes.
 347
 348 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
 349
 350         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
 351         Correct type of macro value.
 352         (shared_ptr): Add additional friend declarations.
 353         (make_shared, allocate_shared): Constrain existing overloads and
 354         remove static_assert.
 355         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
 356         New macro.
 357         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
 358         specialization for use with make_shared_for_overwrite.
 359         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
 360         (_Sp_counted_array_base): New class template.
 361         (_Sp_counted_array): New class template.
 362         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
 363         New constructor for allocating shared arrays.
 364         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
 365         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
 366         type.
 367         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
 368         (__cpp_lib_smart_ptr_for_overwrite): New macro.
 369         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
 370         expected errors.
 371         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
 372         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
 373         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
 374         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
 375         feature test macro. Test non-trivial default-initialization.
 376
 377 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
 378
 379         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
 380         Also cast away cv-qualifiers when converting pointer to void.
 381         * testsuite/20_util/allocator/void.cc: Test construct function
 382         with cv-qualified types.
 383
 384 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
 385
 386         PR libstdc++/103992
 387         * include/bits/stl_iterator.h (common_iterator): Use
 388         std::construct_at instead of placement new.
 389         * testsuite/24_iterators/common_iterator/1.cc: Check copy
 390         construction is usable in constant expressions.
 391
 392 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
 393
 394         * doc/xml/manual/status_cxx2011.xml: Document new tokens
 395         accepted by std::random_device constructor.
 396         * doc/html/manual/status.html: Regenerate.
 397
 398 2022-01-12  Patrick Palka  <ppalka@redhat.com>
 399
 400         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
 401         directive.
 402
 403 2022-01-12  Patrick Palka  <ppalka@redhat.com>
 404
 405         PR libstdc++/103955
 406         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
 407         Track the excess precision separately from the effective
 408         precision.  Avoid overflow in bounds check by splitting it into
 409         two checks.
 410         (__floating_to_chars_precision): Avoid overflow in bounds checks
 411         similarly.
 412         * testsuite/20_util/to_chars/103955.cc: New test.
 413
 414 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 415
 416         PR libstdc++/103726
 417         * include/Makefile.am: Install <source_location> for
 418         freestanding.
 419         * include/Makefile.in: Regenerate.
 420         * include/std/version (__cpp_lib_source_location): Define for
 421         freestanding.
 422
 423 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
 426         Add neoxcept (LWG 3593).
 427
 428 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 429
 430         * include/std/ranges (ranges::__detail::__box): Add constexpr to
 431         assignment operators (LWG 3572).
 432         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
 433         view that uses copyable-box.
 434
 435 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 436
 437         PR libstdc++/103726
 438         * include/Makefile.am: Install <coroutine> for freestanding.
 439         * include/Makefile.in: Regenerate.
 440         * include/std/coroutine: Adjust headers and preprocessor
 441         conditions.
 442         (__coroutine_traits_impl): Use concepts when available.
 443         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
 444
 445 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 446
 447         * include/std/ostream (operator<<(basic_ostream&, charT)):
 448         Use unformatted input if no padding is needed.
 449         (operator<<(basic_ostream<char>&, char)): Likewise.
 450
 451 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 452
 453         PR libstdc++/103891
 454         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
 455         Define.
 456         * include/std/variant (__cpp_lib_variant): Only define C++20
 457         value when the compiler is known to support conditionally
 458         trivial destructors.
 459         * include/std/version (__cpp_lib_variant): Likewise.
 460
 461 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
 462
 463         * include/bits/stl_iterator.h (common_iterator): Add constexpr
 464         to all member functions (LWG 3574).
 465         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
 466         tests as constant expressions.
 467         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
 468
 469 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
 470
 471         PR libstdc++/77760
 472         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
 473         (time_get::_M_extract_via_format): Declare new method with
 474         __time_get_state& as an extra argument.
 475         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
 476         __state argument, set various fields in it while parsing.  Handle %j,
 477         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
 478         for %p immediately.  Add a wrapper around the method without the
 479         __state argument for backwards compatibility.
 480         (_M_extract_num): Remove all __len == 4 special cases.
 481         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
 482         initialize __state, pass it to _M_extract_via_format and finalize it
 483         at the end.
 484         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
 485         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
 486         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
 487         version, don't call do_get but call _M_extract_via_format instead to
 488         pass around state.
 489         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
 490         with extra __time_get_state and __time_get_state::_M_finalize_state.
 491         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
 492         day_of_the_year): New functions in anon namespace.
 493         (mon_yday): New var in anon namespace.
 494         (__time_get_state::_M_finalize_state): Define.
 495         * testsuite/22_locale/time_get/get/char/4.cc: New test.
 496         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
 497         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
 498         as year 197AD instead of error.
 499         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
 500         year 2001 instead of error.
 501         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
 502         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
 503         197 as year 197AD instead of error.
 504         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
 505         1 as year 2001 instead of error.
 506         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
 507
 508 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
 509
 510         PR libstdc++/103866
 511         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
 512         nothing for freestanding builds.
 513         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
 514         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
 515         with --without-headers.  Do not use GCC_HEADER_STDINT for
 516         freestanding builds.
 517         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
 518         for freestanding builds.
 519         * configure: Regenerate.
 520         * Makefile.in: Regenerate.
 521         * doc/Makefile.in: Regenerate.
 522         * include/Makefile.in: Regenerate.
 523         * libsupc++/Makefile.in: Regenerate.
 524         * po/Makefile.in: Regenerate.
 525         * python/Makefile.in: Regenerate.
 526         * src/Makefile.in: Regenerate.
 527         * src/c++11/Makefile.in: Regenerate.
 528         * src/c++17/Makefile.in: Regenerate.
 529         * src/c++20/Makefile.in: Regenerate.
 530         * src/c++98/Makefile.in: Regenerate.
 531         * src/filesystem/Makefile.in: Regenerate.
 532         * testsuite/Makefile.in: Regenerate.
 533
 534 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
 535
 536         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
 537         Add dg-timeout-factor directive.
 538         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
 539         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
 540         * testsuite/28_regex/match_results/102667.cc: Likewise.
 541
 542 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
 543
 544         * doc/xml/manual/using.xml: Update documentation around default
 545         -std option.
 546         * doc/html/*: Regenerate.
 547
 548 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
 549
 550         PR libstdc++/100017
 551         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
 552         * src/c++17/Makefile.in: Regenerate.
 553
 554 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
 555
 556         * testsuite/18_support/type_info/constexpr.cc: Add explicit
 557         -fdelete-null-pointer-checks option.
 558
 559 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
 560             Jonathan Wakely  <jwakely@redhat.com>
 561
 562         PR libstdc++/103853
 563         * include/bits/forward_list.tcc (forward_list::merge): Check for
 564         self-merge.
 565         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
 566
 567 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
 568
 569         * include/bits/regex.h (basic_regex, match_results): Qualify
 570         name in friend declaration, to work around Clang bug.
 571
 572 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
 573
 574         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
 575
 576 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
 577
 578         PR libstdc++/103911
 579         * include/std/charconv (__from_chars_alpha_to_num): Return
 580         char instead of unsigned char. Change invalid return value to
 581         127 instead of using numeric trait.
 582         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
 583         Change type of variable to char.
 584
 585 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
 586
 587         PR libstdc++/68303
 588         * include/bits/hashtable_policy.h
 589         (_Hashtable_hash_traits<_Hash>): New.
 590         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
 591         (_Hashtable_base<>::_M_key_equals): New.
 592         (_Hashtable_base<>::_M_equals): Use latter.
 593         (_Hashtable_base<>::_M_key_equals_tr): New.
 594         (_Hashtable_base<>::_M_equals_tr): Use latter.
 595         * include/bits/hashtable.h
 596         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
 597         (_Hashtable<>::find): Loop through elements to look for key if size is lower
 598         than __small_size_threshold().
 599         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
 600         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
 601         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
 602         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
 603         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
 604         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
 605         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
 606         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
 607         * testsuite/util/testsuite_performance.h
 608         (report_performance): Use 9 width to display memory.
 609         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
 610         New performance test case.
 611
 612 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 613
 614         PR libstdc++/103919
 615         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
 616         Relax constraints on string_view parameter.
 617         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
 618         Likewise.
 619         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
 620
 621 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 622
 623         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
 624         ARM EABI.
 625         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
 626         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
 627         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
 628         is emitted.
 629         (type_info::__equal): Define alias symbol.
 630         * libsupc++/typeinfo (type_info::before): Combine different
 631         implementations into one.
 632         (type_info::operator==): Likewise. Use address equality for
 633         constant evaluation. Call __equal for targets that require the
 634         definition to be non-inline.
 635         * testsuite/18_support/type_info/constexpr.cc: New test.
 636
 637 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 638
 639         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
 640         class and virtual functions as 'final'.
 641         (io_category_instance): Use constinit union to make the object
 642         immortal.
 643         * src/c++11/future.cc (future_error_category): Define class and
 644         virtual functions as 'final'.
 645         (future_category_instance): Use constinit union.
 646
 647 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 648
 649         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
 650         versioned namespace from the type name that is printed.
 651
 652 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 653
 654         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
 655         printer for std::regex NFA states.
 656
 657 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 658
 659         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
 660         placeholders in comments.
 661         * testsuite/23_containers/forward_list/operations/2.cc:
 662         Likewise.
 663         * testsuite/23_containers/forward_list/operations/3.cc:
 664         Likewise.
 665         * testsuite/23_containers/forward_list/operations/4.cc:
 666         Likewise.
 667         * testsuite/23_containers/forward_list/operations/5.cc:
 668         Likewise.
 669         * testsuite/23_containers/forward_list/operations/6.cc:
 670         Likewise.
 671         * testsuite/23_containers/forward_list/operations/7.cc:
 672         Likewise.
 673
 674 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 675
 676         PR libstdc++/103848
 677         * include/bits/stl_deque.h (operator-): Do not use 0 as null
 678         pointer constant.
 679
 680 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 681
 682         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
 683         Use std::_Construct for construct.
 684
 685 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 686
 687         PR libstdc++/103877
 688         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
 689         * doc/html/faq.html: Regenerate.
 690
 691 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 692
 693         * include/bits/regex.h (__regex_algo_impl): Change __policy and
 694         __match_mode template parameters to be function parameters.
 695         (regex_match, regex_search): Pass policy and match mode as
 696         function arguments.
 697         * include/bits/regex.tcc (__regex_algo_impl): Change template
 698         parameters to function parameters.
 699         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
 700         'if constexpr' for conditions using template parameters.
 701         (_RegexTranslator): Likewise.
 702         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
 703         Likewise.
 704         * testsuite/util/testsuite_regex.h (regex_match_debug)
 705         (regex_search_debug): Move template arguments to function
 706         arguments.
 707
 708 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 709
 710         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
 711         results even if the match failed.
 712
 713 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
 714
 715         * include/bits/regex_compiler.tcc: Adjust all calls to
 716         __throw_regex_error.
 717         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
 718         attribute.
 719         * include/bits/regex_scanner.tcc: Likewise.
 720         * src/c++11/regex.cc (desc): New helper function.
 721         (regex_error::regex_error(error_type)): Use desc to get a string
 722         corresponding to the error code.
 723
 724 \f
 725 Copyright (C) 2022 Free Software Foundation, Inc.
 726
 727 Copying and distribution of this file, with or without modification,
 728 are permitted in any medium without royalty provided the copyright
 729 notice and this notice are preserved.