libstdc++-v3/ChangeLog

   1 2022-10-20  Patrick Palka  <ppalka@redhat.com>
   2
   3         * include/std/charconv (__detail::__from_chars_alnum_to_val_table):
   4         Redefine as a class template containing the members type, value and
   5         _S_make_table.  Don't use a local class as the table type.
   6         (__detail::__table): Remove.
   7         (__detail::__from_chars_alnum_to_val): Adjust after the above.
   8
   9 2022-10-19  Patrick Palka  <ppalka@redhat.com>
  10
  11         * include/std/ranges (views::__detail::__is_repeat_view): Define
  12         and later define a partial specialization.
  13         (views::__detail::__take_of_repeat_view): Declare and later define.
  14         (views::__detail::__drop_of_repeat_view): Likewise.
  15         (views::_Take::operator()): Return a repeat_view if the argument
  16         is a repeat_view as per P2474R2.
  17         (views::_Drop::operator()): Likewise.
  18         (repeat_view): Befriend __take/drop_of_repeat_view.
  19         * testsuite/std/ranges/repeat/1.cc (test04): New test.
  20
  21 2022-10-19  Patrick Palka  <ppalka@redhat.com>
  22
  23         PR libstdc++/107313
  24         * include/std/ranges (stride_view::_Iterator::operator-): Fix typo.
  25         * testsuite/std/ranges/adaptors/stride/1.cc (test03): New test.
  26
  27 2022-10-19  LIU Hao  <lh_mouse@126.com>
  28
  29         * src/c++11/thread.cc (get_nprocs): Add new implementation
  30         for native Windows targets
  31
  32 2022-10-19  LIU Hao  <lh_mouse@126.com>
  33
  34         * libsupc++/atexit_thread.cc (__cxa_thread_atexit): Use
  35         implementation from mcfgthread if available
  36         * libsupc++/guard.cc (__cxa_guard_acquire, __cxa_guard_release,
  37         __cxa_guard_abort): Use implementations from mcfgthread if
  38         available
  39         * configure: Regenerate
  40
  41 2022-10-19  Jakub Jelinek  <jakub@redhat.com>
  42
  43         PR c++/106652
  44         * include/std/limits: Fix a typo, 202202L -> 202002L.
  45         (numeric_limits::<_Float16>::radix, numeric_limits::<_Float32>::radix,
  46         numeric_limits::<_Float64>::radix, numeric_limits::<_Float128>::radix,
  47         numeric_limits::<__gnu_cxx::__bfloat16_t>::radix): Use __FLT_RADIX__
  48         macro instead of type specific macros.
  49         * include/c_global/cmath (nextafter(_Float16, _Float16)): New
  50         overload.
  51         (nextafter(__gnu_cxx::__bfloat16_t, __gnu_cxx::__bfloat16_t)):
  52         Likewise.
  53         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc
  54         (test_functions): Uncomment nextafter test.  Fix up sph_neumann call.
  55         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc: New test.
  56
  57 2022-10-18  Patrick Palka  <ppalka@redhat.com>
  58
  59         * include/std/ranges (stride_view): Define.
  60         (stride_view::_Iterator): Define.
  61         (views::__detail::__can_stride_view): Define.
  62         (views::_Stride, views::stride): Define.
  63         * testsuite/std/ranges/adaptors/stride/1.cc: New test.
  64
  65 2022-10-18  Jakub Jelinek  <jakub@redhat.com>
  66
  67         PR c++/106652
  68         * include/std/stdfloat: New file.
  69         * include/std/numbers (__glibcxx_numbers): Define and use it
  70         for __float128 explicit instantiations as well as
  71         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t.
  72         * include/std/atomic (atomic<_Float16>, atomic<_Float32>,
  73         atomic<_Float64>, atomic<_Float128>, atomic<__gnu_cxx::__bfloat16_t>):
  74         New explicit instantiations.
  75         * include/std/type_traits (__is_floating_point_helper<_Float16>,
  76         __is_floating_point_helper<_Float32>,
  77         __is_floating_point_helper<_Float64>,
  78         __is_floating_point_helper<_Float128>,
  79         __is_floating_point_helper<__gnu_cxx::__bfloat16_t>): Likewise.
  80         * include/std/limits (__glibcxx_concat3_, __glibcxx_concat3,
  81         __glibcxx_float_n): Define.
  82         (numeric_limits<_Float16>, numeric_limits<_Float32>,
  83         numeric_limits<_Float64>, numeric_limits<_Float128>,
  84         numeric_limits<__gnu_cxx::__bfloat16_t>): New explicit instantiations.
  85         * include/bits/std_abs.h (abs): New overloads for
  86         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t.
  87         * include/bits/c++config (_GLIBCXX_LDOUBLE_IS_IEEE_BINARY128): Define
  88         if long double is IEEE quad.
  89         (__gnu_cxx::__bfloat16_t): New using.
  90         * include/c_global/cmath (acos, asin, atan, atan2, ceil, cos, cosh,
  91         exp, fabs, floor, fmod, frexp, ldexp, log, log10, modf, pow, sin,
  92         sinh, sqrt, tan, tanh, fpclassify, isfinite, isinf, isnan, isnormal,
  93         signbit, isgreater, isgreaterequal, isless, islessequal,
  94         islessgreater, isunordered, acosh, asinh, atanh, cbrt, copysign, erf,
  95         erfc, exp2, expm1, fdim, fma, fmax, fmin, hypot, ilogb, lgamma,
  96         llrint, llround, log1p, log2, logb, lrint, lround, nearbyint,
  97         nextafter, remainder, rint, round, scalbln, scalbn, tgamma, trunc,
  98         lerp): New overloads with _Float{16,32,64,128} or
  99         __gnu_cxx::__bfloat16_t types.
 100         * config/os/gnu-linux/os_defines.h (_GLIBCXX_HAVE_FLOAT128_MATH):
 101         Prepare for definition if glibc 2.26 and later implements *f128 APIs
 102         but comment out the actual definition for now.
 103         * include/ext/type_traits.h (__promote<_Float16>, __promote<_Float32>,
 104         __promote<_Float64>, __promote<_Float128>,
 105         __promote<__gnu_cxx::__bfloat16_t>): New specializations.
 106         * include/Makefile.am (std_headers): Add stdfloat.
 107         * include/Makefile.in: Regenerated.
 108         * include/precompiled/stdc++.h: Include stdfloat.
 109         * testsuite/18_support/headers/stdfloat/types_std.cc: New test.
 110         * testsuite/18_support/headers/limits/synopsis_cxx23.cc: New test.
 111         * testsuite/26_numerics/headers/cmath/c99_classification_macros_c++23.cc:
 112         New test.
 113         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc: New test.
 114         * testsuite/26_numerics/numbers/4.cc: New test.
 115         * testsuite/29_atomics/atomic_float/requirements_cxx23.cc: New test.
 116
 117 2022-10-17  Jonathan Wakely  <jwakely@redhat.com>
 118
 119         * include/std/charconv (__cpp_lib_constexpr_charconv): Define to
 120         correct value.
 121         * include/std/version (__cpp_lib_constexpr_charconv): Likewise.
 122         * testsuite/20_util/to_chars/constexpr.cc: Check correct value.
 123         * testsuite/20_util/to_chars/version.cc: Likewise.
 124
 125 2022-10-15  Jonathan Wakely  <jwakely@redhat.com>
 126
 127         * src/c++11/debug.cc (print_raw): Move inside #if block.
 128
 129 2022-10-15  Jonathan Wakely  <jwakely@redhat.com>
 130
 131         * include/bits/charconv.h (__to_chars_10_impl): Add constexpr
 132         for C++23. Remove 'static' from array.
 133         * include/std/charconv (__cpp_lib_constexpr_charconv): Define.
 134         (__to_chars, __to_chars_16): Remove 'static' from array, add
 135         constexpr.
 136         (__to_chars_10, __to_chars_8, __to_chars_2, __to_chars_i)
 137         (to_chars, __raise_and_add, __from_chars_pow2_base)
 138         (__from_chars_alnum, from_chars): Add constexpr.
 139         (__from_chars_alnum_to_val): Avoid local static during constant
 140         evaluation. Add constexpr.
 141         * include/std/version (__cpp_lib_constexpr_charconv): Define.
 142         * testsuite/20_util/from_chars/constexpr.cc: New test.
 143         * testsuite/20_util/to_chars/constexpr.cc: New test.
 144         * testsuite/20_util/to_chars/version.cc: New test.
 145
 146 2022-10-15  Jonathan Wakely  <jwakely@redhat.com>
 147
 148         * include/bits/stl_map.h (map::insert(Pair&&)): Use
 149         remove_const_t on argument to __is_pair.
 150         * include/bits/stl_pair.h (__is_pair<const pair<T,U>>): Remove
 151         partial specialization.
 152         * include/bits/uses_allocator_args.h (_Std_pair): Use
 153         remove_cv_t as per LWG 3677.
 154         * testsuite/20_util/uses_allocator/lwg3677.cc: New test.
 155
 156 2022-10-14  Jonathan Wakely  <jwakely@redhat.com>
 157
 158         * libsupc++/eh_alloc.cc [USE_POOL]: New macro.
 159         [!USE_POOL] (__gnu_cxx::__freeres, pool): Do not define.
 160         [_GLIBCXX_EH_POOL_STATIC] (pool::arena): Do not use std::max.
 161         (__cxxabiv1::__cxa_allocate_exception) [!USE_POOL]: Do not use
 162         pool.
 163         (__cxxabiv1::__cxa_free_exception) [!USE_POOL]: Likewise.
 164         (__cxxabiv1::__cxa_allocate_dependent_exception) [!USE_POOL]:
 165         Likewise.
 166         (__cxxabiv1::__cxa_free_dependent_exception) [!USE_POOL]:
 167         Likewise.
 168
 169 2022-10-14  Jonathan Wakely  <jwakely@redhat.com>
 170
 171         * src/c++11/debug.cc (print_raw): Simplify.
 172         (print_word): Print indentation by calling fprintf directly.
 173         (_Error_formatter::_M_error): Print unindented string by calling
 174         fprintf directly.
 175
 176 2022-10-14  Jonathan Wakely  <jwakely@redhat.com>
 177
 178         * include/std/iostream: Use markdown in Doxygen comment.
 179
 180 2022-10-12  François Dumont  <fdumont@gcc.gnu.org>
 181
 182         * include/debug/string: Add using _Base::compare.
 183         (__gnu_debug::basic_string<>::compare(const basic_string<>&)): Remove.
 184         (__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&)):
 185         Remove.
 186         (__gnu_debug::basic_string<>::compare(size_type, size_type, const basic_string<>&,
 187         size_type, size_type)): Remove.
 188         * testsuite/util/testsuite_string.h [_GLIBCXX_TEST_DEBUG_STRING]: Include <debug/string>.
 189         * testsuite/21_strings/basic_string/operations/compare/char/1.cc: Include testsuite_string.h
 190         and use __gnu_test::string.
 191         * testsuite/21_strings/basic_string/operations/compare/char/13650.cc: Likewise.
 192         * testsuite/21_strings/basic_string/operations/compare/char/2.cc: Likewise.
 193         * testsuite/21_strings/basic_string/operations/rfind/char/1.cc: Likewise.
 194         * testsuite/21_strings/basic_string/operations/rfind/char/2.cc: Likewise.
 195         * testsuite/21_strings/basic_string/operations/rfind/char/3.cc: Likewise.
 196         * testsuite/21_strings/basic_string/operations/compare/wchar_t/1.cc:
 197         Include testsuite_string.h
 198         and use __gnu_test::wstring.
 199         * testsuite/21_strings/basic_string/operations/compare/wchar_t/13650.cc: Likewise.
 200         * testsuite/21_strings/basic_string/operations/compare/wchar_t/2.cc: Likewise.
 201
 202 2022-10-12  Patrick Palka  <ppalka@redhat.com>
 203
 204         * include/std/ranges (repeat_view): Define.
 205         (repeat_view::_Iterator): Define.
 206         (views::__detail::__can_repeat_view): Define.
 207         (views::__detail::__can_bounded_repeat_view): Define.
 208         (views::_Repeat, views::repeat): Define.
 209         * testsuite/std/ranges/repeat/1.cc: New test.
 210
 211 2022-10-12  Martin Liska  <mliska@suse.cz>
 212
 213         * configure: Regenerate.
 214
 215 2022-10-11  Jonathan Wakely  <jwakely@redhat.com>
 216
 217         PR bootstrap/107221
 218         * libsupc++/eh_alloc.cc (pool): Change preprocessor condition
 219         for using __mutex from __GTHREADS to _GLIBCXX_HOSTED.
 220         (pool::allocate): Remove namespace qualification to use
 221         pool::__scoped_lock instead of __gnu_cxx::__scoped_lock.
 222
 223 2022-10-11  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         PR libstdc++/68606
 226         * Makefile.in: Regenerate.
 227         * acinclude.m4 (GLIBCXX_EMERGENCY_EH_ALLOC): New macro.
 228         * configure: Regenerate.
 229         * configure.ac: Use GLIBCXX_EMERGENCY_EH_ALLOC.
 230         * crossconfig.m4: Check for secure_getenv.
 231         * doc/Makefile.in: Regenerate.
 232         * doc/xml/manual/configure.xml: Document new configure options.
 233         * doc/xml/manual/evolution.xml: Document addition of tunables.
 234         * doc/xml/manual/using_exceptions.xml: Document emergency
 235         buffer and tunables.
 236         * doc/html/*: Regenerate.
 237         * include/Makefile.in: Regenerate.
 238         * libsupc++/Makefile.am: Use EH_POOL_FLAGS.
 239         * libsupc++/Makefile.in: Regenerate.
 240         * libsupc++/eh_alloc.cc (EMERGENCY_OBJ_SIZE): Define in units
 241         of sizeof(void*) not including the ABI's exception header.
 242         (EMERGENCY_OBJ_COUNT): Define as target-independent calculation
 243         based on word size.
 244         (MAX_OBJ_COUNT): Define macro for upper limit on pool size.
 245         (pool) [_GLIBCXX_EH_POOL_STATIC]: Use fixed-size buffer.
 246         (pool::buffer_size_in_bytes): New static member function.
 247         (pool::pool): Parse GLIBCXX_TUNABLES environment variable to set
 248         pool size at runtime.
 249         (pool::in_pool): Use std::less<void*> for total order.
 250         (__freeres) [_GLIBCXX_EH_POOL_STATIC]: Do nothing.
 251         (__cxa_free_exception, __cxa_free_dependent_exception): Add
 252         [[unlikely]] attributes.
 253         * po/Makefile.in: Regenerate.
 254         * python/Makefile.in: Regenerate.
 255         * src/Makefile.in: Regenerate.
 256         * src/c++11/Makefile.in: Regenerate.
 257         * src/c++17/Makefile.in: Regenerate.
 258         * src/c++20/Makefile.in: Regenerate.
 259         * src/c++98/Makefile.in: Regenerate.
 260         * src/filesystem/Makefile.in: Regenerate.
 261         * src/libbacktrace/Makefile.in: Regenerate.
 262         * testsuite/Makefile.in: Regenerate.
 263
 264 2022-10-11  Olivier Hainque  <hainque@adacore.com>
 265             Olivier Hainque  <hainque@adacore.com>
 266
 267         * configure: Regenerate.
 268
 269 2022-10-10  Jonathan Wakely  <jwakely@redhat.com>
 270
 271         * include/std/type_traits (make_signed, make_unsigned): Remove
 272         constraints on primary template.
 273         * testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
 274         Undo changes to expected error in C++20 mode.
 275         * testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
 276         Likewise.
 277         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
 278         Likewise.
 279         * testsuite/20_util/make_signed/requirements/uninstantiated.cc:
 280         New test.
 281         * testsuite/20_util/make_unsigned/requirements/uninstantiated.cc:
 282         New test.
 283
 284 2022-10-10  Jonathan Wakely  <jwakely@redhat.com>
 285
 286         * include/std/type_traits (make_signed, make_unsigned): Add
 287         specializations for cv bool. Add requires-clause for C++20 to
 288         improve diagnostics for non-integral, non-enum cases.
 289         * testsuite/20_util/make_signed/requirements/typedefs_neg.cc:
 290         Check cv bool.
 291         * testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc:
 292         Likewise.
 293         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc:
 294         Adjust expected errors for C++20 and later.
 295         * testsuite/lib/prune.exp: Prune "in requirements  [with ...]"
 296         lines from diagnostics.
 297
 298 2022-10-07  Jonathan Wakely  <jwakely@redhat.com>
 299
 300         * acinclude.m4 (GLIBCXX_ENABLE_HOSTED): Add libstdcxx-hosted
 301         enable arg as an alias for hosted-libstdcxx enable arg.
 302         * configure: Regenerate.
 303
 304 2022-10-07  Jonathan Wakely  <jwakely@redhat.com>
 305
 306         * include/bits/std_function.h: Include <new> but do not include
 307         <bits/stl_function.h>.
 308         * include/std/functional: Do not include <new>.
 309
 310 2022-10-07  Jonathan Wakely  <jwakely@redhat.com>
 311
 312         * doc/xml/manual/intro.xml: Add role="bold" attribute to
 313         emphasis elements for issue titles.
 314         * doc/html/manual/bugs.html: Regenerate.
 315
 316 2022-10-05  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         * include/Makefile.in: Regenerate.
 319
 320 2022-10-05  Jonathan Wakely  <jwakely@redhat.com>
 321
 322         * include/bits/invoke.h (__invoke_r): Check
 323         __has_builtin(__reference_converts_from_temporary) before using
 324         built-in.
 325
 326 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 327
 328         * testsuite/std/ranges/adaptors/join_with/1.cc: Remove unused
 329         <sstream header.
 330         (test04): Remove constexpr for old std::string ABI and test at
 331         runtime.
 332
 333 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 334
 335         * include/std/type_traits (remove_cv): Use __remove_cv built-in.
 336         (remove_reference): Use __remove_reference built-in.
 337         (remove_cvref): Use __remove_cvref built-in. Remove inheritance
 338         for fallback implementation.
 339
 340 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 341
 342         * include/bits/random.h (__is_seed_seq): Replace with ...
 343         (_If_seed_seq_for): ... this.
 344         * include/ext/random: Adjust to use _If_seed_seq_for.
 345
 346 2022-10-04  Patrick Palka  <ppalka@redhat.com>
 347
 348         * include/std/ranges (join_with_view::_Iterator::operator*):
 349         Replace use of std::visit with manual visitation.
 350         (join_with_view::_Iterator::operator++): Likewise.
 351         (join_with_view::_Iterator::operator--): Likewise.
 352         (join_with_view::_Iterator::iter_move): Likewise.
 353         (join_with_view::_Iterator::iter_swap): Likewise.
 354
 355 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 356
 357         * testsuite/25_algorithms/stable_sort/mem_check.cc: Do nto run
 358         for freestanding.
 359
 360 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 361
 362         PR libstdc++/107139
 363         * include/std/coroutine: Remove all _GLIBCXXHOSTED preprocessor
 364         conditionals.
 365
 366 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 367
 368         PR libstdc++/107134
 369         * include/c_global/cstdint [!_GLIBCXX_HOSTED]: Include
 370         <stdint-gcc.h> directly.
 371
 372 2022-10-04  Jonathan Wakely  <jwakely@redhat.com>
 373
 374         PR libstdc++/107135
 375         * include/bits/functexcept.h [!_GLIBCXX_HOSTED]
 376         (__throw_invalid_argument, __throw_out_of_range)
 377         (__throw_out_of_range_fmt, __throw_runtime_error)
 378         (__throw_overflow_error): Define inline.
 379         * include/std/bitset (_M_copy_from_ptr) [!_GLIBCXX_HOSTED]:
 380         Replace __builtin_abort with __throw_invalid_argument.
 381
 382 2022-10-04  Patrick Palka  <ppalka@redhat.com>
 383
 384         * include/std/ranges: Include <variant> for C++23.
 385         (__detail::__compatible_joinable_ranges): Define.
 386         (__detail::__bidirectional_common): Define.
 387         (join_with_view): Define.
 388         (join_with_view::_Iterator): Define.
 389         (join_with_view::_Sentinel): Define.
 390         (views::__detail::__can_join_with_view): Define.
 391         (views::_JoinWith, views::join_with): Define.
 392         * testsuite/std/ranges/adaptors/join_with/1.cc: New test.
 393
 394 2022-10-04  Arsen Arsenović  <arsen@aarsen.me>
 395
 396         * include/std/iostream: Use ///< for inline documentation.
 397         * include/std/limits: Likewise.
 398         * include/experimental/internet: Likewise.
 399
 400 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
 401
 402         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
 403         * doc/html/manual/status.html: Regenerate.
 404
 405 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
 406
 407         PR libstdc++/103626
 408         * testsuite/17_intro/headers/c++1998/stdc++_assert_neg.cc:
 409         Require ET hosted.
 410         * testsuite/18_support/aligned_alloc/aligned_alloc.cc: Likewise.
 411         * testsuite/18_support/new_nothrow.cc: Likewise.
 412         * testsuite/20_util/allocator/105975.cc: Likewise.
 413         * testsuite/20_util/allocator/14176.cc: Likewise.
 414         * testsuite/20_util/allocator/64135.cc: Likewise.
 415         * testsuite/20_util/allocator/89510.cc: Likewise.
 416         * testsuite/20_util/allocator/lwg3190.cc: Likewise.
 417         * testsuite/20_util/allocator/overaligned.cc: Likewise.
 418         * testsuite/20_util/allocator/rebind_c++20.cc: Likewise.
 419         * testsuite/20_util/allocator/requirements/constexpr.cc:
 420         Likewise.
 421         * testsuite/20_util/allocator/requirements/explicit_instantiation/1.cc:
 422         Likewise.
 423         * testsuite/20_util/allocator/requirements/typedefs.cc:
 424         Likewise.
 425         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc:
 426         Likewise.
 427         * testsuite/20_util/allocator/void.cc: Likewise.
 428         * testsuite/20_util/allocator_traits/header-2.cc: Likewise.
 429         * testsuite/20_util/allocator_traits/header.cc: Likewise.
 430         * testsuite/20_util/allocator_traits/members/92878_92947.cc:
 431         Likewise.
 432         * testsuite/20_util/allocator_traits/members/pointers.cc:
 433         Likewise.
 434         * testsuite/20_util/allocator_traits/requirements/typedefs.cc:
 435         Likewise.
 436         * testsuite/20_util/bad_function_call/cons_virtual_derivation.cc:
 437         Likewise.
 438         * testsuite/20_util/bind/42593.cc: Likewise.
 439         * testsuite/20_util/bitset/access/dr396.cc: Likewise.
 440         * testsuite/20_util/bitset/access/to_string.cc: Likewise.
 441         * testsuite/20_util/bitset/cons/16020.cc: Likewise.
 442         * testsuite/20_util/bitset/cons/dr1325-2.cc: Likewise.
 443         * testsuite/20_util/bitset/cons/dr396.cc: Likewise.
 444         * testsuite/20_util/bitset/debug/invalidation/1.cc: Likewise.
 445         * testsuite/20_util/bitset/ext/15361.cc: Likewise.
 446         * testsuite/20_util/bitset/operations/13838.cc: Likewise.
 447         * testsuite/20_util/bitset/operations/96303.cc: Likewise.
 448         * testsuite/20_util/bitset/version.cc: Likewise.
 449         * testsuite/20_util/enable_shared_from_this/56383.cc: Likewise.
 450         * testsuite/20_util/enable_shared_from_this/89303.cc: Likewise.
 451         * testsuite/20_util/enable_shared_from_this/members/assign.cc:
 452         Likewise.
 453         * testsuite/20_util/enable_shared_from_this/members/const.cc:
 454         Likewise.
 455         * testsuite/20_util/enable_shared_from_this/members/reinit.cc:
 456         Likewise.
 457         * testsuite/20_util/enable_shared_from_this/members/unique_ptr.cc:
 458         Likewise.
 459         * testsuite/20_util/enable_shared_from_this/members/weak_from_this.cc:
 460         Likewise.
 461         * testsuite/20_util/enable_shared_from_this/requirements/explicit_instantiation.cc:
 462         Likewise.
 463         * testsuite/20_util/forward/1.cc: Likewise.
 464         * testsuite/20_util/forward/1_neg.cc: Likewise.
 465         * testsuite/20_util/function/1.cc: Likewise.
 466         * testsuite/20_util/function/10.cc: Likewise.
 467         * testsuite/20_util/function/2.cc: Likewise.
 468         * testsuite/20_util/function/3.cc: Likewise.
 469         * testsuite/20_util/function/4.cc: Likewise.
 470         * testsuite/20_util/function/43397.cc: Likewise.
 471         * testsuite/20_util/function/48541.cc: Likewise.
 472         * testsuite/20_util/function/5.cc: Likewise.
 473         * testsuite/20_util/function/58569.cc: Likewise.
 474         * testsuite/20_util/function/6.cc: Likewise.
 475         * testsuite/20_util/function/60594.cc: Likewise.
 476         * testsuite/20_util/function/65760.cc: Likewise.
 477         * testsuite/20_util/function/69222.cc: Likewise.
 478         * testsuite/20_util/function/7.cc: Likewise.
 479         * testsuite/20_util/function/77322.cc: Likewise.
 480         * testsuite/20_util/function/8.cc: Likewise.
 481         * testsuite/20_util/function/9.cc: Likewise.
 482         * testsuite/20_util/function/91456.cc: Likewise.
 483         * testsuite/20_util/function/assign/move.cc: Likewise.
 484         * testsuite/20_util/function/assign/move_target.cc: Likewise.
 485         * testsuite/20_util/function/cmp/cmp_neg.cc: Likewise.
 486         * testsuite/20_util/function/cons/55320.cc: Likewise.
 487         * testsuite/20_util/function/cons/57465.cc: Likewise.
 488         * testsuite/20_util/function/cons/72820.cc: Likewise.
 489         * testsuite/20_util/function/cons/addressof.cc: Likewise.
 490         * testsuite/20_util/function/cons/callable.cc: Likewise.
 491         * testsuite/20_util/function/cons/deduction.cc: Likewise.
 492         * testsuite/20_util/function/cons/lwg2774.cc: Likewise.
 493         * testsuite/20_util/function/cons/move.cc: Likewise.
 494         * testsuite/20_util/function/cons/move_target.cc: Likewise.
 495         * testsuite/20_util/function/cons/noexcept.cc: Likewise.
 496         * testsuite/20_util/function/cons/non_copyconstructible.cc:
 497         Likewise.
 498         * testsuite/20_util/function/cons/refqual.cc: Likewise.
 499         * testsuite/20_util/function/cons/70692.cc: Likewise.
 500         * testsuite/20_util/function/cons/deduction_c++23.cc: Likewise.
 501         * testsuite/20_util/function/invoke/forwarding.cc: Likewise.
 502         * testsuite/20_util/function/invoke/move_only.cc: Likewise.
 503         * testsuite/20_util/function/null_pointer_comparisons.cc:
 504         Likewise.
 505         * testsuite/20_util/function/requirements/explicit_instantiation.cc:
 506         Likewise.
 507         * testsuite/20_util/function/target_no_rtti.cc: Likewise.
 508         * testsuite/20_util/function_objects/83607.cc: Likewise.
 509         * testsuite/20_util/function_objects/mem_fn/adl.cc: Likewise.
 510         * testsuite/20_util/headers/cstdlib/functions_std.cc: Likewise.
 511         * testsuite/20_util/headers/functional/types_std_c++0x.cc:
 512         Likewise.
 513         * testsuite/20_util/headers/memory/types_std_c++0x.cc: Likewise.
 514         * testsuite/20_util/is_function/35637.cc: Likewise.
 515         * testsuite/20_util/move/1.cc: Likewise.
 516         * testsuite/20_util/move_only_function/call.cc: Likewise.
 517         * testsuite/20_util/move_only_function/cons.cc: Likewise.
 518         * testsuite/20_util/move_only_function/move.cc: Likewise.
 519         * testsuite/20_util/move_only_function/version.cc: Likewise.
 520         * testsuite/20_util/owner_less/cmp.cc: Likewise.
 521         * testsuite/20_util/owner_less/noexcept.cc: Likewise.
 522         * testsuite/20_util/owner_less/void.cc: Likewise.
 523         * testsuite/20_util/pointer_safety/1.cc: Likewise.
 524         * testsuite/20_util/scoped_allocator/65279.cc: Likewise.
 525         * testsuite/20_util/scoped_allocator/69293_neg.cc: Likewise.
 526         * testsuite/20_util/scoped_allocator/construct_pair.cc:
 527         Likewise.
 528         * testsuite/20_util/scoped_allocator/dr2586.cc: Likewise.
 529         * testsuite/20_util/scoped_allocator/requirements/explicit_instantiation.cc:
 530         Likewise.
 531         * testsuite/20_util/shared_ptr/assign/assign.cc: Likewise.
 532         * testsuite/20_util/shared_ptr/assign/auto_ptr.cc: Likewise.
 533         * testsuite/20_util/shared_ptr/assign/auto_ptr_neg.cc: Likewise.
 534         * testsuite/20_util/shared_ptr/assign/auto_ptr_rvalue.cc:
 535         Likewise.
 536         * testsuite/20_util/shared_ptr/assign/dr541.cc: Likewise.
 537         * testsuite/20_util/shared_ptr/assign/move.cc: Likewise.
 538         * testsuite/20_util/shared_ptr/assign/sfinae.cc: Likewise.
 539         * testsuite/20_util/shared_ptr/assign/shared_ptr.cc: Likewise.
 540         * testsuite/20_util/shared_ptr/assign/shared_ptr_neg.cc:
 541         Likewise.
 542         * testsuite/20_util/shared_ptr/assign/unique_ptr_lvalue_neg.cc:
 543         Likewise.
 544         * testsuite/20_util/shared_ptr/assign/unique_ptr_rvalue.cc:
 545         Likewise.
 546         * testsuite/20_util/shared_ptr/atomic/1.cc: Likewise.
 547         * testsuite/20_util/shared_ptr/atomic/2.cc: Likewise.
 548         * testsuite/20_util/shared_ptr/casts/1.cc: Likewise.
 549         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
 550         * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
 551         * testsuite/20_util/shared_ptr/comparison/42925.cc: Likewise.
 552         * testsuite/20_util/shared_ptr/comparison/86537.cc: Likewise.
 553         * testsuite/20_util/shared_ptr/comparison/cmp.cc: Likewise.
 554         * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc:
 555         Likewise.
 556         * testsuite/20_util/shared_ptr/comparison/dr1401.cc: Likewise.
 557         * testsuite/20_util/shared_ptr/comparison/less.cc: Likewise.
 558         * testsuite/20_util/shared_ptr/cons/39405.cc: Likewise.
 559         * testsuite/20_util/shared_ptr/cons/43820_neg.cc: Likewise.
 560         * testsuite/20_util/shared_ptr/cons/46910.cc: Likewise.
 561         * testsuite/20_util/shared_ptr/cons/51365.cc: Likewise.
 562         * testsuite/20_util/shared_ptr/cons/52924.cc: Likewise.
 563         * testsuite/20_util/shared_ptr/cons/55123.cc: Likewise.
 564         * testsuite/20_util/shared_ptr/cons/58659.cc: Likewise.
 565         * testsuite/20_util/shared_ptr/cons/58839.cc: Likewise.
 566         * testsuite/20_util/shared_ptr/cons/61036.cc: Likewise.
 567         * testsuite/20_util/shared_ptr/cons/79467.cc: Likewise.
 568         * testsuite/20_util/shared_ptr/cons/80229.cc: Likewise.
 569         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Likewise.
 570         * testsuite/20_util/shared_ptr/cons/alias.cc: Likewise.
 571         * testsuite/20_util/shared_ptr/cons/array.cc: Likewise.
 572         * testsuite/20_util/shared_ptr/cons/auto_ptr.cc: Likewise.
 573         * testsuite/20_util/shared_ptr/cons/auto_ptr_neg.cc: Likewise.
 574         * testsuite/20_util/shared_ptr/cons/copy.cc: Likewise.
 575         * testsuite/20_util/shared_ptr/cons/deduction.cc: Likewise.
 576         * testsuite/20_util/shared_ptr/cons/default.cc: Likewise.
 577         * testsuite/20_util/shared_ptr/cons/lwg2802.cc: Likewise.
 578         * testsuite/20_util/shared_ptr/cons/lwg3548.cc: Likewise.
 579         * testsuite/20_util/shared_ptr/cons/move.cc: Likewise.
 580         * testsuite/20_util/shared_ptr/cons/noexcept_move_construct.cc:
 581         Likewise.
 582         * testsuite/20_util/shared_ptr/cons/nullptr.cc: Likewise.
 583         * testsuite/20_util/shared_ptr/cons/pointer.cc: Likewise.
 584         * testsuite/20_util/shared_ptr/cons/unique_ptr.cc: Likewise.
 585         * testsuite/20_util/shared_ptr/cons/unique_ptr_array.cc:
 586         Likewise.
 587         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter.cc:
 588         Likewise.
 589         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_1.cc:
 590         Likewise.
 591         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_2.cc:
 592         Likewise.
 593         * testsuite/20_util/shared_ptr/cons/void_neg.cc: Likewise.
 594         * testsuite/20_util/shared_ptr/cons/weak_ptr.cc: Likewise.
 595         * testsuite/20_util/shared_ptr/creation/36949.cc: Likewise.
 596         * testsuite/20_util/shared_ptr/creation/58594-no-rtti.cc:
 597         Likewise.
 598         * testsuite/20_util/shared_ptr/creation/58594.cc: Likewise.
 599         * testsuite/20_util/shared_ptr/creation/87278.cc: Likewise.
 600         * testsuite/20_util/shared_ptr/creation/92878_92947.cc:
 601         Likewise.
 602         * testsuite/20_util/shared_ptr/creation/99006.cc: Likewise.
 603         * testsuite/20_util/shared_ptr/creation/dr402.cc: Likewise.
 604         * testsuite/20_util/shared_ptr/creation/dr925.cc: Likewise.
 605         * testsuite/20_util/shared_ptr/creation/make.cc: Likewise.
 606         * testsuite/20_util/shared_ptr/creation/no_rtti.cc: Likewise.
 607         * testsuite/20_util/shared_ptr/creation/overwrite.cc: Likewise.
 608         * testsuite/20_util/shared_ptr/creation/private.cc: Likewise.
 609         * testsuite/20_util/shared_ptr/creation/single_allocation.cc:
 610         Likewise.
 611         * testsuite/20_util/shared_ptr/creation/single_allocation_no_rtti.cc:
 612         Likewise.
 613         * testsuite/20_util/shared_ptr/creation/version.cc: Likewise.
 614         * testsuite/20_util/shared_ptr/dest/dest.cc: Likewise.
 615         * testsuite/20_util/shared_ptr/hash/1.cc: Likewise.
 616         * testsuite/20_util/shared_ptr/misc/24595.cc: Likewise.
 617         * testsuite/20_util/shared_ptr/misc/42019.cc: Likewise.
 618         * testsuite/20_util/shared_ptr/misc/get_deleter.cc: Likewise.
 619         * testsuite/20_util/shared_ptr/misc/swap.cc: Likewise.
 620         * testsuite/20_util/shared_ptr/modifiers/reset.cc: Likewise.
 621         * testsuite/20_util/shared_ptr/modifiers/reset_neg.cc: Likewise.
 622         * testsuite/20_util/shared_ptr/modifiers/reset_sfinae.cc:
 623         Likewise.
 624         * testsuite/20_util/shared_ptr/modifiers/swap.cc: Likewise.
 625         * testsuite/20_util/shared_ptr/modifiers/swap_neg.cc: Likewise.
 626         * testsuite/20_util/shared_ptr/observers/array.cc: Likewise.
 627         * testsuite/20_util/shared_ptr/observers/bool_conv.cc: Likewise.
 628         * testsuite/20_util/shared_ptr/observers/get.cc: Likewise.
 629         * testsuite/20_util/shared_ptr/observers/owner_before.cc:
 630         Likewise.
 631         * testsuite/20_util/shared_ptr/observers/unique.cc: Likewise.
 632         * testsuite/20_util/shared_ptr/observers/use_count.cc: Likewise.
 633         * testsuite/20_util/shared_ptr/requirements/explicit_instantiation/1.cc:
 634         Likewise.
 635         * testsuite/20_util/shared_ptr/requirements/explicit_instantiation/2.cc:
 636         Likewise.
 637         * testsuite/20_util/shared_ptr/requirements/weak_type.cc:
 638         Likewise.
 639         * testsuite/20_util/specialized_algorithms/construct_at/95788.cc:
 640         Likewise.
 641         * testsuite/20_util/temporary_buffer.cc: Likewise.
 642         * testsuite/20_util/tuple/48476.cc: Likewise.
 643         * testsuite/20_util/tuple/cons/90700.cc: Likewise.
 644         * testsuite/20_util/tuple/cons/96803.cc: Likewise.
 645         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Likewise.
 646         * testsuite/20_util/tuple/cons/allocators.cc: Likewise.
 647         * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc:
 648         Likewise.
 649         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
 650         * testsuite/20_util/tuple/p2321r2.cc: Likewise.
 651         * testsuite/20_util/unique_ptr/creation/92878_92947.cc:
 652         Likewise.
 653         * testsuite/20_util/unique_ptr/creation/array.cc: Likewise.
 654         * testsuite/20_util/unique_ptr/creation/array_neg.cc: Likewise.
 655         * testsuite/20_util/unique_ptr/creation/constexpr.cc: Likewise.
 656         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc:
 657         Likewise.
 658         * testsuite/20_util/unique_ptr/creation/for_overwrite__neg.cc:
 659         Likewise.
 660         * testsuite/20_util/unique_ptr/creation/single.cc: Likewise.
 661         * testsuite/20_util/uses_allocator/69293_neg.cc: Likewise.
 662         * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
 663         * testsuite/20_util/uses_allocator/uninitialized_construct.cc:
 664         Likewise.
 665         * testsuite/20_util/weak_ptr/comparison/cmp_neg.cc: Likewise.
 666         * testsuite/20_util/weak_ptr/cons/deduction.cc: Likewise.
 667         * testsuite/20_util/weak_ptr/cons/noexcept_move_construct.cc:
 668         Likewise.
 669         * testsuite/20_util/weak_ptr/lock/1.cc: Likewise.
 670         * testsuite/20_util/weak_ptr/observers/owner_before.cc:
 671         Likewise.
 672         * testsuite/20_util/weak_ptr/requirements/explicit_instantiation/1.cc:
 673         Likewise.
 674         * testsuite/20_util/weak_ptr/requirements/explicit_instantiation/2.cc:
 675         Likewise.
 676         * testsuite/21_strings/basic_string/version.cc: Likewise.
 677         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
 678         Likewise.
 679         * testsuite/21_strings/c_strings/char/69626.cc: Likewise.
 680         * testsuite/21_strings/char_traits/requirements/version.cc:
 681         Likewise.
 682         * testsuite/23_containers/vector/requirements/version.cc:
 683         Likewise.
 684         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
 685         Likewise.
 686         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
 687         Likewise.
 688         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
 689         Likewise.
 690         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
 691         Likewise.
 692         * testsuite/24_iterators/istreambuf_iterator/92285.cc: Likewise.
 693         * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
 694         Likewise.
 695         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
 696         Likewise.
 697         * testsuite/24_iterators/istreambuf_iterator/requirements/dr445.cc:
 698         Likewise.
 699         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
 700         Likewise.
 701         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
 702         Likewise.
 703         * testsuite/25_algorithms/constexpr_macro.cc: Likewise.
 704         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
 705         * testsuite/25_algorithms/headers/cstdlib/functions_std.cc:
 706         Likewise.
 707         * testsuite/25_algorithms/inplace_merge/1.cc: Likewise.
 708         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
 709         Likewise.
 710         * testsuite/25_algorithms/make_heap/movable.cc: Likewise.
 711         * testsuite/25_algorithms/pstl/feature_test-4.cc: Likewise.
 712         * testsuite/25_algorithms/random_shuffle/1.cc: Likewise.
 713         * testsuite/25_algorithms/random_shuffle/moveable.cc: Likewise.
 714         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
 715         Likewise.
 716         * testsuite/25_algorithms/sort/35588.cc: Likewise.
 717         * testsuite/25_algorithms/stable_partition/1.cc: Likewise.
 718         * testsuite/25_algorithms/stable_partition/constrained.cc:
 719         Likewise.
 720         * testsuite/25_algorithms/stable_partition/mem_check.cc:
 721         Likewise.
 722         * testsuite/25_algorithms/stable_partition/moveable.cc:
 723         Likewise.
 724         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
 725         Likewise.
 726         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
 727         Likewise.
 728         * testsuite/25_algorithms/stable_sort/1.cc: Likewise.
 729         * testsuite/26_numerics/complex/2.cc: Likewise.
 730         * testsuite/26_numerics/headers/cstdlib/13943.cc: Likewise.
 731         * testsuite/26_numerics/headers/cstdlib/2190.cc: Likewise.
 732         * testsuite/26_numerics/headers/cstdlib/60401.cc: Likewise.
 733         * testsuite/26_numerics/headers/cstdlib/dr2192.cc: Likewise.
 734         * testsuite/26_numerics/headers/cstdlib/dr2192_neg.cc: Likewise.
 735         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: Likewise.
 736         * testsuite/26_numerics/headers/cstdlib/functions_std.cc:
 737         Likewise.
 738         * testsuite/26_numerics/headers/cstdlib/macros.cc: Likewise.
 739         * testsuite/26_numerics/headers/cstdlib/types_std.cc: Likewise.
 740         * testsuite/26_numerics/headers/cstdlib/types_std_c++0x.cc:
 741         Likewise.
 742         * testsuite/26_numerics/lerp/version.cc: Likewise.
 743         * testsuite/26_numerics/midpoint/version.cc: Likewise.
 744         * testsuite/27_io/basic_syncbuf/2.cc: Likewise.
 745         * testsuite/27_io/basic_syncstream/2.cc: Likewise.
 746         * testsuite/27_io/fpos/14320-1.cc: Likewise.
 747         * testsuite/27_io/fpos/14320-2.cc: Likewise.
 748         * testsuite/27_io/fpos/14320-3.cc: Likewise.
 749         * testsuite/27_io/fpos/14320-4.cc: Likewise.
 750         * testsuite/27_io/spanstream/version.cc: Likewise.
 751         * testsuite/29_atomics/atomic/lwg3220.cc: Likewise.
 752         * testsuite/29_atomics/atomic/operators/51811.cc: Likewise.
 753         * testsuite/29_atomics/atomic/wait_notify/1.cc: Likewise.
 754         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Likewise.
 755         * testsuite/29_atomics/atomic/wait_notify/2.cc: Likewise.
 756         * testsuite/29_atomics/headers/stdatomic.h/version.cc: Likewise.
 757         * testsuite/30_threads/barrier/2.cc: Likewise.
 758         * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
 759         Likewise.
 760         * testsuite/30_threads/jthread/version.cc: Likewise.
 761         * testsuite/30_threads/latch/2.cc: Likewise.
 762         * testsuite/30_threads/semaphore/2.cc: Likewise.
 763         * testsuite/30_threads/stop_token/2.cc: Likewise.
 764         * testsuite/abi/pr42230.cc: Likewise.
 765         * testsuite/ext/shared_ptr/1.cc: Likewise.
 766         * testsuite/libstdc++-xmethods/shared_ptr.cc: Likewise.
 767         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
 768         * testsuite/std/ranges/adaptors/p1739.cc: Likewise.
 769         * testsuite/std/ranges/iota/lwg3292_neg.cc: Likewise.
 770         * testsuite/std/ranges/p2325.cc: Likewise.
 771
 772 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
 773
 774         * include/std/bitset (bitset(const C*, size_type n, C, C))
 775         [!_GLIBCXX_HOSTED]: Remove std::basic_string dependency.
 776         (_M_copy_from_ptr) [!_GLIBCXX_HOSTED]: Abort instead of
 777         throwing.
 778
 779 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
 780
 781         PR libstdc++/103626
 782         * include/std/bitset [!_GLIBCXX_HOSTED]: Re-enable std::hash.
 783         * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Require ET
 784         hosted.
 785         * testsuite/20_util/bitset/ext/constexpr.cc: Likewise.
 786
 787 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
 788
 789         PR libstdc++/103626
 790         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
 791         Also require hosted.
 792         (check_effective_target_hosted): New proc.
 793
 794 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
 795             Jonathan Wakely  <jwakely@redhat.com>
 796
 797         PR libstdc++/103626
 798         * testsuite/17_intro/headers/c++1998/stdc++.cc [!__STDC_HOSTED__]:
 799         Do not include C headers that aren't valid for freestanding.
 800         * testsuite/17_intro/tag_type_explicit_ctor.cc [!__STDC_HOSTED__]:
 801         Do not test tag types that aren't defined for freestanding.
 802         * testsuite/18_support/headers/cstdlib/functions_std.cc: Do not
 803         check for std::getenv and std::system for freestanding.
 804         * testsuite/17_intro/using_namespace_std_exp_neg.cc [!__STDC_HOSTED__]:
 805         Do not test hosted parts of the standard library.
 806         * testsuite/17_intro/using_namespace_std_tr1_neg.cc [!__STDC_HOSTED__]:
 807         Likewise.
 808         * testsuite/20_util/allocator_traits/members/rebind_alloc.cc [!__STDC_HOSTED__]:
 809         Likewise.
 810         * testsuite/20_util/allocator_traits/requirements/explicit_instantiation.cc [!HOSTED]:
 811         Likewise.
 812         * testsuite/20_util/headers/bitset/synopsis.cc [!__STDC_HOSTED__]: Likewise.
 813         * testsuite/20_util/make_unsigned/requirements/typedefs_neg.cc [!__STDC_HOSTED__]:
 814         Likewise.
 815         * testsuite/20_util/pointer_traits/requirements/typedefs.cc [!__STDC_HOSTED__]:
 816         Likewise.
 817         * testsuite/20_util/tuple/cons/deduction.cc [!__STDC_HOSTED__]: Likewise.
 818         * testsuite/25_algorithms/move/93872.cc [!__STDC_HOSTED__]: Likewise.
 819         * testsuite/std/ranges/adaptors/100577.cc [!__STDC_HOSTED__]: Likewise.
 820
 821 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
 822
 823         PR libstdc++/106953
 824         * include/Makefile.am [!_GLIBCXX_HOSTED]: Remove
 825         install-freestanding-headers, unifying it with the usual
 826         install-headers
 827         * include/Makefile.in: Regenerate.
 828
 829 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
 830             Jonathan Wakely  <jwakely@redhat.com>
 831
 832         PR libstdc++/103626
 833         * include/Makefile.am: Add new header.
 834         * include/Makefile.in: Regenerate.
 835         * include/bits/requires_hosted.h: New header.
 836         * include/experimental/algorithm: Include
 837         <bits/requires_hosted.h>.
 838         * include/experimental/any: Likewise.
 839         * include/experimental/array: Likewise.
 840         * include/experimental/buffer: Likewise.
 841         * include/experimental/chrono: Likewise.
 842         * include/experimental/deque: Likewise.
 843         * include/experimental/executor: Likewise.
 844         * include/experimental/filesystem: Likewise.
 845         * include/experimental/forward_list: Likewise.
 846         * include/experimental/functional: Likewise.
 847         * include/experimental/internet: Likewise.
 848         * include/experimental/io_context: Likewise.
 849         * include/experimental/iterator: Likewise.
 850         * include/experimental/list: Likewise.
 851         * include/experimental/map: Likewise.
 852         * include/experimental/memory: Likewise.
 853         * include/experimental/memory_resource: Likewise.
 854         * include/experimental/net: Likewise.
 855         * include/experimental/netfwd: Likewise.
 856         * include/experimental/numeric: Likewise.
 857         * include/experimental/optional: Likewise.
 858         * include/experimental/propagate_const: Likewise.
 859         * include/experimental/random: Likewise.
 860         * include/experimental/ratio: Likewise.
 861         * include/experimental/regex: Likewise.
 862         * include/experimental/scope: Likewise.
 863         * include/experimental/set: Likewise.
 864         * include/experimental/simd: Likewise.
 865         * include/experimental/socket: Likewise.
 866         * include/experimental/source_location: Likewise.
 867         * include/experimental/string: Likewise.
 868         * include/experimental/string_view: Likewise.
 869         * include/experimental/system_error: Likewise.
 870         * include/experimental/timer: Likewise.
 871         * include/experimental/tuple: Likewise.
 872         * include/experimental/unordered_map: Likewise.
 873         * include/experimental/unordered_set: Likewise.
 874         * include/experimental/utility: Likewise.
 875         * include/experimental/vector: Likewise.
 876         * include/std/barrier: Likewise.
 877         * include/std/chrono: Likewise.
 878         * include/std/condition_variable: Likewise.
 879         * include/std/deque: Likewise.
 880         * include/std/execution: Likewise.
 881         * include/std/filesystem: Likewise.
 882         * include/std/forward_list: Likewise.
 883         * include/std/fstream: Likewise.
 884         * include/std/future: Likewise.
 885         * include/std/iomanip: Likewise.
 886         * include/std/ios: Likewise.
 887         * include/std/iosfwd: Likewise.
 888         * include/std/iostream: Likewise.
 889         * include/std/istream: Likewise.
 890         * include/std/latch: Likewise.
 891         * include/std/list: Likewise.
 892         * include/std/locale: Likewise.
 893         * include/std/map: Likewise.
 894         * include/std/memory_resource: Likewise.
 895         * include/std/mutex: Likewise.
 896         * include/std/ostream: Likewise.
 897         * include/std/queue: Likewise.
 898         * include/std/random: Likewise.
 899         * include/std/regex: Likewise.
 900         * include/std/semaphore: Likewise.
 901         * include/std/set: Likewise.
 902         * include/std/shared_mutex: Likewise.
 903         * include/std/spanstream: Likewise.
 904         * include/std/sstream: Likewise.
 905         * include/std/stack: Likewise.
 906         * include/std/stacktrace: Likewise.
 907         * include/std/stop_token: Likewise.
 908         * include/std/streambuf: Likewise.
 909         * include/std/string: Likewise.
 910         * include/std/syncstream: Likewise.
 911         * include/std/system_error: Likewise.
 912         * include/std/thread: Likewise.
 913         * include/std/unordered_map: Likewise.
 914         * include/std/unordered_set: Likewise.
 915         * include/std/valarray: Likewise.
 916         * include/std/vector: Likewise.
 917         * include/tr1/array: Likewise.
 918         * include/tr1/ccomplex: Likewise.
 919         * include/tr1/cctype: Likewise.
 920         * include/tr1/cfenv: Likewise.
 921         * include/tr1/cfloat: Likewise.
 922         * include/tr1/cinttypes: Likewise.
 923         * include/tr1/climits: Likewise.
 924         * include/tr1/cmath: Likewise.
 925         * include/tr1/complex: Likewise.
 926         * include/tr1/complex.h: Likewise.
 927         * include/tr1/cstdarg: Likewise.
 928         * include/tr1/cstdbool: Likewise.
 929         * include/tr1/cstdint: Likewise.
 930         * include/tr1/cstdio: Likewise.
 931         * include/tr1/cstdlib: Likewise.
 932         * include/tr1/ctgmath: Likewise.
 933         * include/tr1/ctime: Likewise.
 934         * include/tr1/ctype.h: Likewise.
 935         * include/tr1/cwchar: Likewise.
 936         * include/tr1/cwctype: Likewise.
 937         * include/tr1/fenv.h: Likewise.
 938         * include/tr1/float.h: Likewise.
 939         * include/tr1/functional: Likewise.
 940         * include/tr1/inttypes.h: Likewise.
 941         * include/tr1/limits.h: Likewise.
 942         * include/tr1/math.h: Likewise.
 943         * include/tr1/memory: Likewise.
 944         * include/tr1/random: Likewise.
 945         * include/tr1/regex: Likewise.
 946         * include/tr1/stdarg.h: Likewise.
 947         * include/tr1/stdbool.h: Likewise.
 948         * include/tr1/stdint.h: Likewise.
 949         * include/tr1/stdio.h: Likewise.
 950         * include/tr1/stdlib.h: Likewise.
 951         * include/tr1/tgmath.h: Likewise.
 952         * include/tr1/tuple: Likewise.
 953         * include/tr1/type_traits: Likewise.
 954         * include/tr1/unordered_map: Likewise.
 955         * include/tr1/unordered_set: Likewise.
 956         * include/tr1/utility: Likewise.
 957         * include/tr1/wchar.h: Likewise.
 958         * include/tr1/wctype.h: Likewise.
 959         * include/c_global/cmath: Likewise.
 960         * include/ext/algorithm: Include <bits/requires_hosted.h>.
 961         * include/ext/bitmap_allocator.h: Likewise.
 962         * include/ext/cmath: Likewise.
 963         * include/ext/codecvt_specializations.h: Likewise.
 964         * include/ext/debug_allocator.h: Likewise.
 965         * include/ext/enc_filebuf.h: Likewise.
 966         * include/ext/extptr_allocator.h: Likewise.
 967         * include/ext/functional: Likewise.
 968         * include/ext/malloc_allocator.h: Likewise.
 969         * include/ext/memory: Likewise.
 970         * include/ext/mt_allocator.h: Likewise.
 971         * include/ext/new_allocator.h: Likewise.
 972         * include/ext/numeric: Likewise.
 973         * include/ext/pod_char_traits.h: Likewise.
 974         * include/ext/pool_allocator.h: Likewise.
 975         * include/ext/random: Likewise.
 976         * include/ext/random.tcc: Likewise.
 977         * include/ext/rb_tree: Likewise.
 978         * include/ext/rc_string_base.h: Likewise.
 979         * include/ext/rope: Likewise.
 980         * include/ext/ropeimpl.h: Likewise.
 981         * include/ext/slist: Likewise.
 982         * include/ext/sso_string_base.h: Likewise.
 983         * include/ext/stdio_filebuf.h: Likewise.
 984         * include/ext/stdio_sync_filebuf.h: Likewise.
 985         * include/ext/string_conversions.h: Likewise.
 986         * include/ext/throw_allocator.h: Likewise.
 987         * include/ext/vstring.h: Likewise.
 988         * include/ext/vstring.tcc: Likewise.
 989         * include/ext/vstring_fwd.h: Likewise.
 990         * include/ext/vstring_util.h: Likewise.
 991         * include/std/charconv: Likewise.
 992         (__cpp_lib_to_chars): Do not define for freestanding.
 993         * include/std/version: Adjust which macros get defined in
 994         freestanding.
 995         * include/ext/pointer.h [!_GLIBCXX_HOSTED]: Omit iostream
 996         functionality from freestanding.
 997         * include/std/algorithm [!_GLIBCXX_HOSTED]: Omit PSTL algos.
 998         * include/std/memory [!_GLIBCXX_HOSTED]: Omit
 999         <bits/stl_tempbuf.h> in freestanding
1000         * include/bits/algorithmfwd.h [!_GLIBCXX_HOSTED]: Omit leftover
1001         random_shuffle and stable_partition definition.
1002         * include/bits/stl_algo.h [!_GLIBCXX_HOSTED]: Omit
1003         random_shuffle and stable_partition from freestanding.
1004         * include/bits/ranges_algo.h [!_GLIBCXX_HOSTED]: Omit
1005         stable_partition from freestanding.
1006         * include/bits/concept_check.h: Remove needless HOSTED check.
1007         * include/std/iterator: Include <bits/ranges_base.h>.
1008         * include/std/numeric (__cpp_lib_parallel_algorithms): Do not
1009         define for freestanding.
1010         * include/std/functional (__cpp_lib_boyer_moore_searcher):
1011         Likewise.
1012         * testsuite/lib/prune.exp: Match error for hosted-only libstdc++
1013         tests.
1014
1015 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
1016             Arsen Arsenović  <arsen@aarsen.me>
1017
1018         * include/precompiled/extc++.h [!_GLIBCXX_HOSTED]: Do not
1019         include headers that aren't valid for freestanding.
1020         * include/precompiled/stdc++.h [!_GLIBCXX_HOSTED]: Likewise.
1021
1022 2022-10-03  Arsen Arsenović  <arsen@aarsen.me>
1023
1024         * configure.ac: Remove any lines that unconditionally include
1025         <stdio.h> from ac_includes_default, when running Autoconf <2.70.
1026         * configure: Regenerate.
1027
1028 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
1029
1030         PR libstdc++/103626
1031         * acinclude.m4 (GLIBCXX_ENABLE_HOSTED): Define _GLIBCXX_HOSTED
1032         to __STDC_HOSTED__ for non-freestanding installations.
1033         * configure: Regenerate.
1034         * include/Makefile.am (${host_builddir}/c++config.h): Adjust
1035         grep pattern.
1036         * include/Makefile.in: Regenerate.
1037         * testsuite/lib/libstdc++.exp (v3-build_support): Use
1038         -fno-freestanding.
1039         * testsuite/libstdc++-abi/abi.exp: Likewise.
1040
1041 2022-10-03  Jonathan Wakely  <jwakely@redhat.com>
1042
1043         * testsuite/27_io/basic_ostream/inserters_other/char/6.cc:
1044         Change body of unused operator<< overload to throw if called.
1045         * testsuite/27_io/basic_ostream/inserters_other/wchar_t/6.cc:
1046         Likewise.
1047
1048 2022-10-03  François Dumont  <fdumont@gcc.gnu.org>
1049
1050         * python/libstdcxx/v6/printers.py (Printer.add_version): Do not add version
1051         namespace for __cxx11 symbols.
1052         (add_one_template_type_printer): Likewise.
1053         (add_one_type_printer): Likewise.
1054         (FilteringTypePrinter._recognizer.recognize): Add a workaround for std::string & al
1055         ambiguous typedef matching both std:: and std::__cxx11:: symbols.
1056         * testsuite/libstdc++-prettyprinters/cxx17.cc: Remove obsolete
1057         \#define _GLIBCXX_USE_CXX11_ABI 0.
1058         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise. Adapt test to accept
1059         std::__cxx11::list.
1060         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1061         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
1062         * testsuite/libstdc++-prettyprinters/80276.cc: Likewise and remove xfail for c++20
1063         and debug mode.
1064         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
1065
1066 2022-09-30  Jonathan Wakely  <jwakely@redhat.com>
1067
1068         * testsuite/20_util/bitset/access/to_ulong.cc: Construct bitset
1069         from binary literal instead of using stringstream.
1070
1071 2022-09-30  Jonathan Wakely  <jwakely@redhat.com>
1072
1073         * include/std/bitset (operator>>): Use a simple buffer instead
1074         of std::basic_string.
1075
1076 2022-09-30  Jonathan Wakely  <jwakely@redhat.com>
1077
1078         * include/std/bitset (_M_copy_from_ptr, _M_copy_from_string)
1079         (_M_copy_to_string): Change access to private.
1080         (_M_copy_from_string(const basic_string&, size_t, size_t)):
1081         Remove.
1082         (_M_copy_to_string(const basic_string&)): Remove.
1083
1084 2022-09-30  Jonathan Wakely  <jwakely@redhat.com>
1085
1086         * testsuite/20_util/bind/ref_neg.cc: Fix dg-prune-output
1087         directive.
1088
1089 2022-09-30  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
1090             Yvan ROUX   <yvan.roux@foss.st.com>
1091
1092         * testsuite/20_util/bind/ref_neg.cc: Prune Windows paths too.
1093
1094 2022-09-30  Arsen Arsenović  <arsen@aarsen.me>
1095
1096         * include/std/bitset: Include <bits/stl_algobase.h>.
1097
1098 2022-09-29  François Dumont  <fdumont@gcc.gnu.org>
1099
1100         * python/libstdcxx/v6/printers.py (add_one_template_type_printer): Register
1101         printer for types in std::__debug namespace with template parameters in std::__8
1102         namespace.
1103
1104 2022-09-29  Patrick Palka  <ppalka@redhat.com>
1105
1106         * include/bits/unique_ptr.h (unique_ptr<_Tp[], _Dp>): Remove
1107         __remove_cv and use __remove_cv_t instead.
1108
1109 2022-09-29  Jonathan Wakely  <jwakely@redhat.com>
1110
1111         * include/std/type_traits (__is_invocable_impl): Check
1112         __has_builtin(__reference_converts_from_temporary) before using
1113         built-in.
1114
1115 2022-09-28  Jonathan Wakely  <jwakely@redhat.com>
1116
1117         * doc/xml/manual/evolution.xml: Document std::bind API
1118         changes.
1119         * doc/xml/manual/intro.xml: Document LWG 2487 status.
1120         * doc/xml/manual/using.xml: Clarify default value of
1121         _GLIBCXX_USE_DEPRECATED.
1122         * doc/html/*: Regenerate.
1123         * include/std/functional (_Bind::operator()(Args&&...) volatile)
1124         (_Bind::operator()(Args&&...) const volatile)
1125         (_Bind_result::operator()(Args&&...) volatile)
1126         (_Bind_result::operator()(Args&&...) const volatile): Replace
1127         with deleted overload for C++20 and later.
1128         * testsuite/20_util/bind/cv_quals.cc: Check for deprecated
1129         warnings in C++17.
1130         * testsuite/20_util/bind/cv_quals_2.cc: Likewise, and check for
1131         ill-formed in C++20.
1132
1133 2022-09-28  Jonathan Wakely  <jwakely@redhat.com>
1134
1135         PR libstdc++/70692
1136         * include/bits/invoke.h [__cplusplus < 201703] (__invoke_r):
1137         Remove is_invocable and is_convertible constraints.
1138         * include/std/type_traits (__is_invocable_impl::_S_conv): Use
1139         non-deduced context for parameter.
1140         (__is_invocable_impl::_S_test): Remove _Check_noex template
1141         parameter and use deduced noexcept value in its place. Add bool
1142         parameter to detect dangling references.
1143         (__is_invocable_impl::type): Adjust call to _S_test to avoid
1144         deducing unnecessary noexcept property..
1145         (__is_invocable_impl::__nothrow_type): Rename to ...
1146         (__is_invocable_impl::__nothrow_conv): ... this. Adjust call
1147         to _S_test to deduce noexcept property.
1148         * testsuite/20_util/bind/dangling_ref.cc: New test.
1149         * testsuite/20_util/function/cons/70692.cc: New test.
1150         * testsuite/20_util/function_objects/invoke/dangling_ref.cc:
1151         New test.
1152         * testsuite/20_util/is_invocable/dangling_ref.cc: New test.
1153         * testsuite/30_threads/packaged_task/cons/dangling_ref.cc:
1154         New test.
1155
1156 2022-09-27  Jonathan Wakely  <jwakely@redhat.com>
1157
1158         PR c++/107049
1159         * testsuite/20_util/is_convertible/requirements/access.cc: New
1160         test.
1161
1162 2022-09-27  Jonathan Wakely  <jwakely@redhat.com>
1163
1164         PR c++/106651
1165         * include/bits/std_function.h (__function_guide_t): New alias
1166         template.
1167         [__cpp_static_call_operator] (__function_guide_static_helper):
1168         New class template.
1169         (function): Use __function_guide_t in deduction guide.
1170         * include/std/future (packaged_task): Use __function_guide_t in
1171         deduction guide.
1172         * testsuite/20_util/function/cons/deduction_c++23.cc: New test.
1173         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
1174         New test.
1175
1176 2022-09-26  Jonathan Wakely  <jwakely@redhat.com>
1177
1178         * include/bits/ptr_traits.h (__ptr_traits_elem) [__cpp_concepts]:
1179         Also define the __ptr_traits_elem class template for the
1180         concepts case.
1181         (pointer_traits<Ptr>): Remove constrained partial
1182         specialization.
1183         * testsuite/20_util/pointer_traits/lwg3545.cc: Check for
1184         ambiguitiy with program-defined partial specialization.
1185
1186 2022-09-26  Jonathan Wakely  <jwakely@redhat.com>
1187
1188         * include/std/type_traits (is_convertible, is_convertible_v):
1189         Define using new built-in.
1190         (is_nothrow_convertible is_nothrow_convertible_v): Likewise.
1191
1192 2022-09-26  Jonathan Wakely  <jwakely@redhat.com>
1193
1194         PR libstdc++/107037
1195         * include/std/bitset (_Base_bitset::_M_do_reset): Use
1196         preprocessor conditional around non-C++03 code.
1197         * testsuite/20_util/bitset/107037.cc: New test.
1198
1199 2022-09-24  Jonathan Wakely  <jwakely@redhat.com>
1200
1201         * include/bits/alloc_traits.h (allocator_traits::is_always_equal):
1202         Only instantiate is_empty if needed.
1203         * include/bits/ptr_traits.h (__ptr_traits_impl::difference_type)
1204         (__ptr_traits_impl::rebind): Use __detected_or.
1205         * include/experimental/type_traits (is_same_v): Add a partial
1206         specialization instead of instantiating the std::is_same class
1207         template.
1208         (detected_t): Redefine in terms of detected_or_t.
1209         (is_detected, is_detected_v): Redefine in terms of detected_t.
1210         * include/std/type_traits [__cpp_concepts] (__detected_or): Add
1211         new definition using concepts.
1212         (__detector::value_t): Rename to __is_detected.
1213         * testsuite/17_intro/names.cc: Check value_t isn't used.
1214
1215 2022-09-23  Jonathan Wakely  <jwakely@redhat.com>
1216
1217         * testsuite/20_util/is_assignable/requirements/access.cc:
1218         New test.
1219
1220 2022-09-23  Jonathan Wakely  <jwakely@redhat.com>
1221
1222         PR libstdc++/91456
1223         * include/std/type_traits (__is_nothrow_invocable_lib): Remove.
1224         (__is_invocable_impl::__nothrow_type): New member type which
1225         checks if the conversion can throw.
1226         (__is_nt_invocable_impl): Replace class template with alias
1227         template to __is_nt_invocable_impl::__nothrow_type.
1228         * testsuite/20_util/is_nothrow_invocable/91456.cc: New test.
1229         * testsuite/20_util/is_nothrow_convertible/value.cc: Remove
1230         macro used by value_ext.cc test.
1231         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: Remove
1232         test for non-standard __is_nothrow_invocable_lib trait.
1233
1234 2022-09-23  Marek Polacek  <polacek@redhat.com>
1235
1236         PR c++/106784
1237         * include/std/type_traits: Rename __is_nothrow_convertible to
1238         __is_nothrow_convertible_lib.
1239         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: Likewise.
1240
1241 2022-09-23  Jonathan Wakely  <jwakely@redhat.com>
1242
1243         * include/std/bitset (operator>>): Do not copy for N==0.
1244         * testsuite/20_util/bitset/io/input.cc: Add comment.
1245
1246 2022-09-23  Jonathan Wakely  <jwakely@redhat.com>
1247
1248         * include/debug/bitset (__debug::bitset): Add constexpr to all
1249         member functions.
1250         (operator&, operator|, operator^): Add inline and constexpr.
1251         (operator>>, operator<<): Add inline.
1252         * testsuite/20_util/bitset/access/constexpr.cc: Only check using
1253         constexpr std::string for the cxx11 ABI.
1254         * testsuite/20_util/bitset/cons/constexpr_c++23.cc: Likewise.
1255         * testsuite/20_util/headers/bitset/synopsis.cc: Check constexpr
1256         for C++23.
1257
1258 2022-09-23  Jonathan Wakely  <jwakely@redhat.com>
1259
1260         * include/std/bitset (bitset::_M_copy_to_string): Find set bits
1261         instead of iterating over individual bits.
1262
1263 2022-09-22  Jonathan Wakely  <jwakely@redhat.com>
1264
1265         * include/std/bitset (bitset): Add constexpr for C++23. Guard
1266         members using std::string with _GLIBCXX_HOSTED.
1267         * include/std/version (__cpp_lib_constexpr_bitset): Define.
1268         * testsuite/20_util/bitset/access/constexpr.cc: New test.
1269         * testsuite/20_util/bitset/cons/constexpr_c++23.cc: New test.
1270         * testsuite/20_util/bitset/count/constexpr.cc: New test.
1271         * testsuite/20_util/bitset/ext/constexpr.cc: New test.
1272         * testsuite/20_util/bitset/operations/constexpr_c++23.cc: New test.
1273         * testsuite/20_util/bitset/version.cc: New test.
1274
1275 2022-09-22  Jonathan Wakely  <jwakely@redhat.com>
1276
1277         * testsuite/23_containers/bitset/18604.cc: Moved to...
1278         * testsuite/20_util/bitset/18604.cc: ...here.
1279         * testsuite/23_containers/bitset/45713.cc: Moved to...
1280         * testsuite/20_util/bitset/45713.cc: ...here.
1281         * testsuite/23_containers/bitset/to_string/dr396.cc: Moved to...
1282         * testsuite/20_util/bitset/access/dr396.cc: ...here.
1283         * testsuite/23_containers/bitset/to_string/1.cc: Moved to...
1284         * testsuite/20_util/bitset/access/to_string.cc: ...here.
1285         * testsuite/23_containers/bitset/to_ullong/1.cc: Moved to...
1286         * testsuite/20_util/bitset/access/to_ullong.cc: ...here.
1287         * testsuite/23_containers/bitset/to_ulong/1.cc: Moved to...
1288         * testsuite/20_util/bitset/access/to_ulong.cc: ...here.
1289         * testsuite/23_containers/bitset/cons/1.cc: Moved to...
1290         * testsuite/20_util/bitset/cons/1.cc: ...here.
1291         * testsuite/23_containers/bitset/cons/16020.cc: Moved to...
1292         * testsuite/20_util/bitset/cons/16020.cc: ...here.
1293         * testsuite/23_containers/bitset/cons/2.cc: Moved to...
1294         * testsuite/20_util/bitset/cons/2.cc: ...here.
1295         * testsuite/23_containers/bitset/cons/3.cc: Moved to...
1296         * testsuite/20_util/bitset/cons/3.cc: ...here.
1297         * testsuite/23_containers/bitset/cons/38244.cc: Moved to...
1298         * testsuite/20_util/bitset/cons/38244.cc: ...here.
1299         * testsuite/23_containers/bitset/cons/50268.cc: Moved to...
1300         * testsuite/20_util/bitset/cons/50268.cc: ...here.
1301         * testsuite/23_containers/bitset/cons/6282.cc: Moved to...
1302         * testsuite/20_util/bitset/cons/6282.cc: ...here.
1303         * testsuite/23_containers/bitset/cons/constexpr.cc: Moved to...
1304         * testsuite/20_util/bitset/cons/constexpr.cc: ...here.
1305         * testsuite/23_containers/bitset/cons/dr1325-1.cc: Moved to...
1306         * testsuite/20_util/bitset/cons/dr1325-1.cc: ...here.
1307         * testsuite/23_containers/bitset/cons/dr1325-2.cc: Moved to...
1308         * testsuite/20_util/bitset/cons/dr1325-2.cc: ...here.
1309         * testsuite/23_containers/bitset/cons/dr396.cc: Moved to...
1310         * testsuite/20_util/bitset/cons/dr396.cc: ...here.
1311         * testsuite/23_containers/bitset/debug/invalidation/1.cc: Moved to...
1312         * testsuite/20_util/bitset/debug/invalidation/1.cc: ...here.
1313         * testsuite/23_containers/bitset/ext/15361.cc: Moved to...
1314         * testsuite/20_util/bitset/ext/15361.cc: ...here.
1315         * testsuite/23_containers/bitset/hash/1.cc: Moved to...
1316         * testsuite/20_util/bitset/hash/1.cc: ...here.
1317         * testsuite/23_containers/bitset/input/1.cc: Moved to...
1318         * testsuite/20_util/bitset/io/input.cc: ...here.
1319         * testsuite/23_containers/bitset/count/6124.cc: Moved to...
1320         * testsuite/20_util/bitset/observers/6124.cc: ...here.
1321         * testsuite/23_containers/bitset/all/1.cc: Moved to...
1322         * testsuite/20_util/bitset/observers/all.cc: ...here.
1323         * testsuite/23_containers/bitset/test/1.cc: Moved to...
1324         * testsuite/20_util/bitset/observers/test.cc: ...here.
1325         * testsuite/23_containers/bitset/operations/1.cc: Moved to...
1326         * testsuite/20_util/bitset/operations/1.cc: ...here.
1327         * testsuite/23_containers/bitset/operations/13838.cc: Moved to...
1328         * testsuite/20_util/bitset/operations/13838.cc: ...here.
1329         * testsuite/23_containers/bitset/operations/2.cc: Moved to...
1330         * testsuite/20_util/bitset/operations/2.cc: ...here.
1331         * testsuite/23_containers/bitset/operations/96303.cc: Moved to...
1332         * testsuite/20_util/bitset/operations/96303.cc: ...here.
1333         * testsuite/23_containers/bitset/operations/constexpr-2.cc: Moved to...
1334         * testsuite/20_util/bitset/operations/constexpr-2.cc: ...here.
1335         * testsuite/23_containers/bitset/operations/constexpr.cc: Moved to...
1336         * testsuite/20_util/bitset/operations/constexpr.cc: ...here.
1337         * testsuite/23_containers/bitset/requirements/constexpr_functions.cc: Moved to...
1338         * testsuite/20_util/bitset/requirements/constexpr_functions.cc: ...here.
1339         * testsuite/23_containers/bitset/requirements/explicit_instantiation/1.cc: Moved to...
1340         * testsuite/20_util/bitset/requirements/explicit_instantiation/1.cc: ...here.
1341         * testsuite/23_containers/bitset/requirements/explicit_instantiation/1_c++0x.cc: Moved to...
1342         * testsuite/20_util/bitset/requirements/explicit_instantiation/1_c++0x.cc: ...here.
1343         * testsuite/23_containers/headers/bitset/synopsis.cc: Moved to...
1344         * testsuite/20_util/headers/bitset/synopsis.cc: ...here.
1345
1346 2022-09-22  François Dumont  <fdumont@gcc.gnu.org>
1347
1348         * python/libstdcxx/v6/printers.py: Remove ptinter registration for non-existing
1349         types std::__debug::unique_ptr, std::__debug::stack, std::__debug::queue,
1350         std::__debug::priority_queue.
1351
1352 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1353
1354         PR libstdc++/91456
1355         * testsuite/20_util/function/91456.cc: Add comment with PR
1356         number.
1357         * testsuite/20_util/is_invocable/91456.cc: Likewise. Replace
1358         std::function checks with std::is_invocable_r checks.
1359
1360 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1361
1362         * testsuite/17_intro/headers/c++1998/all_attributes.cc: Remove
1363         unnecessary main function.
1364         * testsuite/17_intro/headers/c++2011/all_attributes.cc:
1365         Likewise.
1366         * testsuite/17_intro/headers/c++2014/all_attributes.cc:
1367         Likewise.
1368         * testsuite/17_intro/headers/c++2017/all_attributes.cc:
1369         Likewise.
1370         * testsuite/17_intro/headers/c++2020/all_attributes.cc:
1371         Likewise.
1372
1373 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1374
1375         * testsuite/20_util/headers/memory/synopsis.cc: Add declarations
1376         from C++11 and later.
1377
1378 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1379
1380         * doc/xml/manual/documentation_hacking.xml: Remove trailing
1381         whitespace.
1382         * doc/xml/manual/policy_data_structures.xml: Likewise.
1383
1384 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1385
1386         * include/c_compatibility/stdlib.h [!_GLIBCXX_HOSTED]: Add
1387         using-declaration for _Exit.
1388
1389 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1390
1391         * testsuite/18_support/uncaught_exception/14026.cc: Qualify
1392         call to std::abort.
1393
1394 2022-09-21  Jonathan Wakely  <jwakely@redhat.com>
1395
1396         * include/bits/ranges_base.h: Include <initializer_list>.
1397
1398 2022-09-20  Jonathan Wakely  <jwakely@redhat.com>
1399
1400         * include/c_global/cstdlib [!_GLIBCXX_HOSTED] (quick_exit): Fix
1401         missing space.
1402
1403 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1404
1405         PR libstdc++/106953
1406         * include/backward/auto_ptr.h [!_GLIBCXX_HOSTED]: Do not define
1407         shared_ptr members.
1408         * include/bits/alloc_traits.h [!_GLIBCXX_HOSTED]: Do not declare
1409         std::allocator_traits<std::allocator<T>> specializations for
1410         freestanding.
1411         * include/bits/memoryfwd.h [!_GLIBCXX_HOSTED] (allocator): Do
1412         not declare for freestanding.
1413         * include/bits/stl_algo.h [!_GLIBCXX_HOSTED] (stable_partition):
1414         Do not define for freestanding.
1415         [!_GLIBCXX_HOSTED] (merge, stable_sort): Do not use temporary
1416         buffers for freestanding.
1417         * include/bits/stl_algobase.h [!_GLIBCXX_HOSTED]: Do not declare
1418         streambuf iterators and overloaded algorithms using them.
1419         * include/bits/stl_uninitialized.h [!_GLIBCXX_HOSTED]: Do not
1420         define specialized overloads for std::allocator.
1421         * include/bits/unique_ptr.h [!_GLIBCXX_HOSTED] (make_unique)
1422         (make_unique_for_overwrite, operator<<): Do not define for
1423         freestanding.
1424         * include/c_global/cstdlib [!_GLIBCXX_HOSTED] (_Exit): Declare.
1425         Use _GLIBCXX_NOTHROW instead of throw().
1426         * include/debug/assertions.h [!_GLIBCXX_HOSTED]: Ignore
1427         _GLIBCXX_DEBUG for freestanding.
1428         * include/debug/debug.h [!_GLIBCXX_DEBUG]: Likewise.
1429         * include/std/bit [!_GLIBCXX_HOSTED]: Do not use the custom
1430         __int_traits if <ext/numeric_traits.h> is available.
1431         * include/std/functional [!_GLIBCXX_HOSTED]: Do not include
1432         headers that aren't valid for freestanding.
1433         (boyer_moore_searcher, boyer_moore_horspool_searcher): Do not
1434         define for freestanding.
1435         * include/std/iterator [!_GLIBCXX_HOSTED]: Do not include
1436         headers that aren't valid for freestanding.
1437         * include/std/memory [!_GLIBCXX_HOSTED]: Likewise.
1438         * include/std/ranges [!_GLIBCXX_HOSTED] (istream_view): Do not
1439         define for freestanding.
1440         (views::__detail::__is_basic_string_view) [!_GLIBCXX_HOSTED]:
1441         Do not define partial specialization for freestanding.
1442
1443 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1444
1445         * include/bits/alloc_traits.h (__alloc_swap)
1446         (__shrink_to_fit_aux): Move here, from ...
1447         * include/bits/allocator.h: ... here.
1448         * include/ext/alloc_traits.h: Do not include allocator.h.
1449
1450 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1451
1452         * include/bits/stl_algo.h: Include <bits/stl_algobase.h>.
1453         * include/bits/stl_tempbuf.h: Include headers for __try and
1454         __catch macros, std::pair, and __gnu_cxx::__numeric_traits.
1455         * include/bits/stream_iterator.h: Include <iosfwd> and headers
1456         for std::addressof and std::iterator.
1457         * include/bits/streambuf_iterator.h: Include header for
1458         std::iterator.
1459         * include/std/iterator: Do not include <iosfwd>.
1460
1461 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1462
1463         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
1464         Store value with non-zero padding bits after construction.
1465
1466 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1467
1468         * include/tr1/random.h (__detail::_Adaptor::_BEngine): Remove.
1469         (__detail::_Adaptor::_M_g): Make public.
1470         (__detail::_Adaptor<_Engine*, _Dist>): Remove partial
1471         specialization.
1472         (variate_generate::_Value): New helper to simplify handling of
1473         _Engine* and _Engine& template arguments.
1474         (variate_generate::engine_value_type): Define to underlying
1475         engine type, not adapted type.
1476         (variate_generate::engine()): Return underlying engine instead
1477         of adaptor.
1478         * testsuite/tr1/5_numerical_facilities/random/variate_generator/37986.cc:
1479         Fix comment.
1480         * testsuite/tr1/5_numerical_facilities/random/variate_generator/requirements/typedefs.cc:
1481         Check member typedefs have the correct types.
1482
1483 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1484
1485         * include/debug/formatter.h [_GLIBCXX_DEBUG_BACKTRACE]
1486         (_Error_formatter): Use 0 as null pointer constant.
1487
1488 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1489
1490         * include/bits/allocator.h (__alloc_neq): Remove.
1491         * include/bits/stl_list.h (list::_M_check_equal_allocators):
1492         Compare allocators directly, without __alloc_neq.
1493
1494 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1495
1496         * doc/doxygen/user.cfg.in (PREDEFINED): Remove __allocator_base.
1497         * include/bits/allocator.h: Fix nesting of Doxygen commands.
1498
1499 2022-09-16  Jonathan Wakely  <jwakely@redhat.com>
1500
1501         * doc/xml/manual/abi.xml: Document GLIBCXX_3.4.30 and
1502         GLIBCXX_3.4.31 versions.
1503         * doc/html/manual/abi.html: Regenerate.
1504
1505 2022-09-15  Jonathan Wakely  <jwakely@redhat.com>
1506
1507         * include/std/memory: Do not include <bits/stl_algobase.h>.
1508
1509 2022-09-15  Jonathan Wakely  <jwakely@redhat.com>
1510
1511         * include/bits/shared_ptr_atomic.h (_GLIBCXX_TSAN_MUTEX_PRE_LOCK):
1512         Replace with ...
1513         (_GLIBCXX_TSAN_MUTEX_TRY_LOCK): ... this, add try_lock flag.
1514         (_GLIBCXX_TSAN_MUTEX_TRY_LOCK_FAILED): New macro using
1515         try_lock_failed flag
1516         (_GLIBCXX_TSAN_MUTEX_POST_LOCK): Rename to ...
1517         (_GLIBCXX_TSAN_MUTEX_LOCKED): ... this.
1518         (_GLIBCXX_TSAN_MUTEX_PRE_UNLOCK): Remove invalid flag.
1519         (_GLIBCXX_TSAN_MUTEX_POST_UNLOCK): Remove invalid flag.
1520         (_Sp_atomic::_Atomic_count::lock): Use new macros.
1521
1522 2022-09-15  Patrick Palka  <ppalka@redhat.com>
1523
1524         * include/bits/ranges_algo.h (__adjacent_find_fn, adjacent_find):
1525         Move to ...
1526         * include/bits/ranges_util.h: ... here.
1527         * include/std/ranges (chunk_by_view): Define.
1528         (chunk_by_view::_Iterator): Define.
1529         (__detail::__can_chunk_by_view): Define.
1530         (_ChunkBy, chunk_by): Define.
1531         * testsuite/std/ranges/adaptors/chunk_by/1.cc: New test.
1532
1533 2022-09-15  François Dumont  <fdumont@gcc.gnu.org>
1534
1535         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc:
1536         Adapt dg-prune-output to _GLIBCXX_INLINE_VERSION mode.
1537
1538 2022-09-15  François Dumont  <fdumont@gcc.gnu.org>
1539
1540         * config/abi/pre/gnu-versioned-namespace.ver: Remove obsolete std::__detail::__8
1541         symbols.
1542
1543 2022-09-14  Jonathan Wakely  <jwakely@redhat.com>
1544
1545         * include/bits/shared_ptr_atomic.h (_GLIBCXX_TSAN_MUTEX_DESTROY)
1546         (_GLIBCXX_TSAN_MUTEX_PRE_LOCK, _GLIBCXX_TSAN_MUTEX_POST_LOCK)
1547         (_GLIBCXX_TSAN_MUTEX_PRE_UNLOCK, _GLIBCXX_TSAN_MUTEX_POST_UNLOCK)
1548         (_GLIBCXX_TSAN_MUTEX_PRE_SIGNAL, _GLIBCXX_TSAN_MUTEX_POST_SIGNAL):
1549         Define macros for TSan annotation functions.
1550         (_Sp_atomic::_Atomic_count): Add annotations.
1551
1552 2022-09-14  Jonathan Wakely  <jwakely@redhat.com>
1553
1554         * include/bits/stl_tempbuf.h: Include <new>.
1555
1556 2022-09-14  Jonathan Wakely  <jwakely@redhat.com>
1557
1558         * testsuite/17_intro/names.cc: Explain why poison pragma can't
1559         be used.
1560
1561 2022-09-14  Jonathan Wakely  <jwakely@redhat.com>
1562
1563         * include/std/future
1564         (_State_baseV2::__setter(exception_ptr&, promise&)): Add
1565         assertion for LWG 2276 precondition.
1566         * testsuite/30_threads/promise/members/set_exception_neg.cc:
1567         New test.
1568
1569 2022-09-14  Jonathan Wakely  <jwakely@redhat.com>
1570
1571         * doc/xml/manual/intro.xml: Document LWG 1203.
1572         * doc/html/*: Regenerate.
1573
1574 2022-09-14  Philipp Fent  <fent@in.tum.de>
1575
1576         * python/libstdcxx/v6/printers.py (access_streambuf_ptrs):
1577         New helper function.
1578         (StdStringBufPrinter, StdStringStreamPrinter): New printers.
1579         (build_libstdcxx_dictionary): Register stringstream printers.
1580         * testsuite/libstdc++-prettyprinters/debug.cc: Check string
1581         streams.
1582         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
1583         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
1584
1585 2022-09-13  Patrick Palka  <ppalka@redhat.com>
1586
1587         * include/std/ranges (__detail::__slide_caches_nothing): Define.
1588         (__detail::__slide_caches_last): Define.
1589         (__detail::__slide_caches_first): Define.
1590         (slide_view): Define.
1591         (enable_borrowed_range<slide_view>): Define.
1592         (slide_view::_Iterator): Define.
1593         (slide_view::_Sentinel): Define.
1594         (views::__detail::__can_slide_view): Define.
1595         (views::_Slide, views::slide): Define.
1596         * testsuite/std/ranges/adaptors/slide/1.cc: New test.
1597
1598 2022-09-13  Patrick Palka  <ppalka@redhat.com>
1599
1600         * include/std/ranges (__detail::__div_ceil): Define.
1601         (chunk_view): Define.
1602         (chunk_view::_OuterIter): Define.
1603         (chunk_view::_OuterIter::value_type): Define.
1604         (chunk_view::_InnerIter): Define.
1605         (chunk_view<_Vp>): Define partial specialization for forward
1606         ranges.
1607         (enable_borrowed_range<chunk_view>): Define.
1608         (chunk_view<_Vp>::_Iterator): Define.
1609         (views::__detail::__can_chunk_view): Define.
1610         (views::_Chunk, views::chunk): Define.
1611         * testsuite/std/ranges/adaptors/chunk/1.cc: New test.
1612
1613 2022-09-13  Patrick Palka  <ppalka@redhat.com>
1614
1615         * include/std/ranges (join_view::_Iterator::_M_satisfy):
1616         Adjust resetting _M_inner as per LWG 3569.
1617         (join_view::_Iterator::_M_inner): Wrap in std::optional
1618         as per LWG 3569.
1619         (join_view::_Iterator::_Iterator): Relax constraints as
1620         per LWG 3569.
1621         (join_view::_Iterator::operator*): Adjust as per LWG 3569.
1622         (join_view::_Iterator::operator->): Likewise.
1623         (join_view::_Iterator::operator++): Likewise.
1624         (join_view::_Iterator::operator--): Likewise.
1625         (join_view::_Iterator::iter_move): Likewise.
1626         (join_view::_Iterator::iter_swap): Likewise.
1627         * testsuite/std/ranges/adaptors/join.cc (test14): New test.
1628
1629 2022-09-13  Patrick Palka  <ppalka@redhat.com>
1630
1631         * include/debug/safe_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
1632         Add parentheses to avoid -Wparentheses warning.
1633
1634 2022-09-12  Patrick Palka  <ppalka@redhat.com>
1635
1636         PR libstdc++/106320
1637         * testsuite/std/ranges/adaptors/join.cc (test13): New test.
1638
1639 2022-09-12  Jonathan Wakely  <jwakely@redhat.com>
1640
1641         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Fix
1642         comments.
1643         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
1644         Likewise.
1645
1646 2022-09-12  Jakub Jelinek  <jakub@redhat.com>
1647
1648         PR tree-optimization/105329
1649         * acinclude.m4 (libtool_VERSION): Change to 6:31:0.
1650         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Don't export
1651         std::basic_string methods with name length of 15.
1652         (GLIBCXX_3.4.31): Export std::basic_string::_M_replace_cold.
1653         * testsuite/util/testsuite_abi.cc (check_version): Handle
1654         GLIBCXX_3.4.31.
1655         * include/bits/basic_string.h (std::basic_string::_M_replace_cold):
1656         Declare.
1657         * include/bits/basic_string.tcc (std::basic_string::_M_replace_cold):
1658         Define and export even for C++20.
1659         (std::basic_string::_M_replace): Use __builtin_expect, outline
1660         the overlapping case to _M_replace_cold.
1661         * configure: Regenerated.
1662
1663 2022-09-09  Jonathan Wakely  <jwakely@redhat.com>
1664
1665         * include/bits/atomic_base.h (__atomic_impl::__compare_exchange):
1666         Rename __weak to __is_weak.
1667         * testsuite/17_intro/names.cc: Add __weak and __strong.
1668
1669 2022-09-09  Patrick Palka  <ppalka@redhat.com>
1670
1671         PR libstdc++/106803
1672         * include/std/ranges (views::_ZipTransform::operator()): Correct
1673         return type in the empty case.
1674         (views::_AdjacentTransform::operator()): Likewise.
1675
1676 2022-09-09  Patrick Palka  <ppalka@redhat.com>
1677
1678         PR libstdc++/106798
1679         * include/std/ranges (adjacent_view::_Iterator::_Iterator): Fix
1680         typo.
1681         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): New test.
1682
1683 2022-09-09  Patrick Palka  <ppalka@redhat.com>
1684
1685         PR libstdc++/106766
1686         * include/std/ranges (zip_view::_Iterator::operator-): Use
1687         __to_unsigned_like instead of make_unsigned_t.
1688         (zip_view::_Sentinel::operator-): Likewise.
1689         * testsuite/std/ranges/zip/1.cc (test04): New test.
1690
1691 2022-09-08  François Dumont  <fdumont@gcc.gnu.org>
1692
1693         * testsuite/util/testsuite_performance.h (__gnu_test::MallocInfo): New.
1694         (__gnu_test::malloc_info): New, replace mallinfo on current platform
1695         supporting it and use mallinfo2 when glibc >= 2.33.
1696
1697 2022-09-08  Jonathan Wakely  <jwakely@redhat.com>
1698
1699         PR c++/106838
1700         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc:
1701         Prune additional errors from front-end.
1702         * testsuite/20_util/is_move_constructible/incomplete_neg.cc:
1703         Likewise.
1704         * testsuite/20_util/is_nothrow_swappable/incomplete_neg.cc:
1705         Likewise.
1706         * testsuite/20_util/is_nothrow_swappable_with/incomplete_neg.cc:
1707         Likewise.
1708         * testsuite/20_util/is_swappable_with/incomplete_neg.cc:
1709         Likewise.
1710
1711 2022-09-08  Jonathan Wakely  <jwakely@redhat.com>
1712
1713         * include/c_global/cstddef (byte): Add always_inline attribute
1714         to all operator overloads.
1715         (to_integer): Add always_inline attribute.
1716
1717 2022-09-08  Thomas Rodgers  <trodgers@redhat.com>
1718             Jakub Jelinek  <jakub@redhat.com>
1719             Jonathan Wakely  <jwakely@redhat.com>
1720
1721         * include/bits/atomic_base.h (__atomic_impl::__maybe_has_padding):
1722         New function.
1723         (__atomic_impl::clear_padding): Likewise.
1724         (__atomic_impl::__compare_exchange): Likewise.
1725         (__atomic_impl::compare_exchange_weak): Delegate to
1726         __compare_exchange.
1727         (__atomic_impl::compare_exchange_strong): Likewise.
1728         * include/std/atomic (atomic<T>::atomic(T)): Clear padding when
1729         possible in a constexpr function.
1730         (atomic::store): Clear padding.
1731         (atomic::exchange): Likewise.
1732         (atomic::compare_exchange_weak): Use __compare_exchange.
1733         (atomic::compare_exchange_strong): Likewise.
1734         * testsuite/29_atomics/atomic/compare_exchange_padding.cc: New
1735         test.
1736         * testsuite/29_atomics/atomic_ref/compare_exchange_padding.cc:
1737         New test.
1738
1739 2022-09-08  Jonathan Wakely  <jwakely@redhat.com>
1740
1741         * include/std/system_error (__adl_only::make_error_code): Add
1742         deleted function.
1743         (__adl_only::make_error_condition): Likewise.
1744         (error_code::error_code(ErrorCodeEnum)): Add using-declaration
1745         for deleted function.
1746         (error_condition::error_condition(ErrorConditionEnum)):
1747         Likewise.
1748         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: New test.
1749         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc: New test.
1750
1751 2022-09-07  Jonathan Wakely  <jwakely@redhat.com>
1752
1753         * include/std/barrier: Add missing runtime exception.
1754
1755 2022-09-07  Patrick Palka  <ppalka@redhat.com>
1756
1757         * include/std/type_traits (is_reference): Make the primary
1758         template derive from false_type.  Define two partial
1759         specializations that derive from true_type.
1760
1761 2022-09-07  Patrick Palka  <ppalka@redhat.com>
1762
1763         * include/std/type_traits (__is_void_helper): Remove.
1764         (is_void): Make the primary template derive from false_type,
1765         and define four explicit specializations that derive from
1766         true_type.
1767         (__is_null_pointer_helper, is_null_pointer): Likewise.
1768
1769 2022-09-07  Jason Merrill  <jason@redhat.com>
1770
1771         * libsupc++/dyncast.cc (__dynamic_cast): Avoid virtual function
1772         call in simple success case.
1773
1774 2022-09-06  Philipp Fent  <fent@in.tum.de>
1775
1776         * testsuite/libstdc++-prettyprinters/48362.cc: Fix expected
1777         tuple indices.
1778         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
1779
1780 2022-09-05  Jonathan Wakely  <jwakely@redhat.com>
1781
1782         * include/std/type_traits (__success_type, __failure_type): Move
1783         definitions later in the file.
1784
1785 2022-09-05  Jonathan Wakely  <jwakely@redhat.com>
1786
1787         * include/std/type_traits (is_trivial_v, is_trivially_copyable_v)
1788         (is_standard_layout_v, is_pod_v, is_literal_type_v): Use
1789         built-in instead of class template.
1790         (is_same_v): Add partial specialization for true case.
1791
1792 2022-09-02  Patrick Palka  <ppalka@redhat.com>
1793
1794         * include/std/tuple (tuple::_UseOtherCtor): Use ::type when
1795         deriving from __and_, __or_ or __not_.
1796         * include/std/type_traits (negation): Likewise.
1797         (is_unsigned): Likewise.
1798         (__is_implicitly_default_constructible): Likewise.
1799         (is_trivially_destructible): Likewise.
1800         (__is_nt_invocable_impl): Likewise.
1801
1802 2022-09-02  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * include/std/type_traits (is_constructible_v)
1805         (is_default_constructible_v, is_copy_constructible_v)
1806         (is_move_constructible_v): Define using __is_constructible.
1807         (is_assignable_v, is_copy_assignable_v, is_move_assignable_v):
1808         Define using __is_assignable.
1809         (is_trivially_constructible_v)
1810         (is_trivially_default_constructible_v)
1811         (is_trivially_copy_constructible_v)
1812         (is_trivially_move_constructible_v): Define using
1813         __is_trivially_constructible.
1814         (is_trivially_assignable_v, is_trivially_copy_assignable_v)
1815         (is_trivially_move_assignable_v): Define using
1816         __is_trivially_assignable.
1817         (is_nothrow_constructible_v)
1818         (is_nothrow_default_constructible_v)
1819         (is_nothrow_copy_constructible_v)
1820         (is_nothrow_move_constructible_v): Define using
1821         __is_nothrow_constructible.
1822         (is_nothrow_assignable_v, is_nothrow_copy_assignable_v)
1823         (is_nothrow_move_assignable_v): Define using
1824         __is_nothrow_assignable.
1825
1826 2022-09-02  Patrick Palka  <ppalka@redhat.com>
1827
1828         * include/std/type_traits (__or_, __and_, __not_): Redefine as a
1829         class template instead of as an alias template.
1830         * testsuite/20_util/logical_traits/requirements/short_circuit.cc:
1831         Add more tests for conjunction and disjunction.  Add corresponding
1832         tests for __and_ and __or_.
1833
1834 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1835
1836         * include/std/ranges (adjacent_transform_view::_Iterator): Add
1837         typename keyword before dependent qualified-id.
1838
1839 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1840
1841         * include/std/type_traits (__is_referenceable): Remove.
1842         (__add_lvalue_reference_helper, __add_rvalue_reference_helper):
1843         Use __void_t instead of __is_referenceable.
1844         (__add_pointer_helper): Likewise.
1845         (add_pointer): Add partial specializations for reference types.
1846
1847 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1848
1849         * include/std/type_traits (__is_constructible_impl): Replace
1850         class template with alias template.
1851         (is_default_constructible, is_nothrow_constructible)
1852         (is_nothrow_constructible): Simplify base-specifier.
1853         (__is_copy_constructible_impl, __is_move_constructible_impl)
1854         (__is_nothrow_copy_constructible_impl)
1855         (__is_nothrow_move_constructible_impl): Remove class templates.
1856         (is_copy_constructible, is_move_constructible)
1857         (is_nothrow_constructible, is_nothrow_default_constructible)
1858         (is_nothrow_copy_constructible, is_nothrow_move_constructible):
1859         Adjust base-specifiers to use __is_constructible_impl.
1860         (__is_copy_assignable_impl, __is_move_assignable_impl)
1861         (__is_nt_copy_assignable_impl, __is_nt_move_assignable_impl):
1862         Remove class templates.
1863         (__is_assignable_impl): New alias template.
1864         (is_assignable, is_copy_assignable, is_move_assignable):
1865         Adjust base-specifiers to use new alias template.
1866         (is_nothrow_copy_assignable, is_nothrow_move_assignable):
1867         Adjust base-specifiers to use existing alias template.
1868         (__is_trivially_constructible_impl): New alias template.
1869         (is_trivially_constructible, is_trivially_default_constructible)
1870         (is_trivially_copy_constructible)
1871         (is_trivially_move_constructible): Adjust base-specifiers to use
1872         new alias template.
1873         (__is_trivially_assignable_impl): New alias template.
1874         (is_trivially_assignable, is_trivially_copy_assignable)
1875         (is_trivially_move_assignable): Adjust base-specifier to use
1876         new alias template.
1877         (__add_lval_ref_t, __add_rval_ref_t): New alias templates.
1878         (add_lvalue_reference, add_rvalue_reference): Use new alias
1879         templates.
1880
1881 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1882
1883         * include/std/type_traits (__decay_selector): Add partial
1884         specializations for array types. Only check for function types
1885         when not dealing with an array.
1886         (decay): Add partial specializations for reference types.
1887
1888 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1889
1890         * include/std/type_traits (is_lvalue_reference_v)
1891         (is_rvalue_reference_v, is_reference_v, is_const_v)
1892         (is_volatile_v): Define using partial specializations instead
1893         of instantiating class templates.
1894
1895 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1896
1897         * include/std/type_traits (is_enum_v, is_class_v, is_union_v)
1898         (is_empty_v, is_polymoprhic_v, is_abstract_v, is_final_v)
1899         (is_base_of_v, is_aggregate_v): Use built-in directly instead of
1900         instantiating class template.
1901
1902 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1903
1904         * include/std/type_traits (is_scoped_enum): Remove workaround.
1905
1906 2022-09-01  Patrick Palka  <ppalka@redhat.com>
1907
1908         * include/std/ranges (__detail::__unarize): Define.
1909         (adjacent_view::_Iterator): Befriend adjacent_transform_view.
1910         (adjacent_transform_view): Define.
1911         (adjacent_transform_view::_Iterator): Define.
1912         (adjacent_transform_view::_Sentinel): Define.
1913         (views::__detail::__can_adjacent_transform_view): Define.
1914         (views::_AdjacentTransform): Define.
1915         (views::adjacent_transform): Define.
1916         (views::pairwise_transform): Define.
1917         * testsuite/std/ranges/adaptors/adjacent_transform/1.cc: New test.
1918
1919 2022-09-01  Jonathan Wakely  <jwakely@redhat.com>
1920
1921         * include/std/type_traits (__is_array_known_bounds): Add partial
1922         specialization instead of using std::extent.
1923         (__is_array_unknown_bounds): Likewise.
1924         (extent): Add partial specializations to stop recursion after
1925         the result is found.
1926         (is_array_v): Add partial specializations instead of
1927         instantiating the class template.
1928         (rank_v, extent_v): Likewise.
1929         (is_bounded_array_v, is_unbounded_array_v): Likewise.
1930         (is_bounded_array, is_unbounded_array): Define in terms of the
1931         variable templates.
1932
1933 2022-08-31  Patrick Palka  <ppalka@redhat.com>
1934
1935         * include/bits/ranges_base.h (__advance_fn::operator()): Add
1936         parentheses in assert condition to avoid -Wparentheses warning.
1937         * include/std/ranges: (take_view::take_view): Uglify 'base'.
1938         (take_while_view::take_while_view): Likewise.
1939         (elements_view::elements_view): Likewise.
1940         (views::_Zip::operator()): Adjust position of [[nodiscard]] for
1941         compatibility with -fconcepts-ts.
1942         (zip_transform_view::_Sentinel): Uglify 'OtherConst'.
1943         (views::_ZipTransform::operator()): Adjust position of
1944         [[nodiscard]] for compatibilty with -fconcepts-ts.
1945
1946 2022-08-31  Martin Liska  <mliska@suse.cz>
1947
1948         * configure: Regenerate.
1949         * crossconfig.m4: Remove deprecated ports.
1950
1951 2022-08-31  François Dumont  <fdumont@gcc.gnu.org>
1952
1953         * include/debug/debug.h: Use nullptr rather than '0' in checks in post-C++11.
1954         * include/debug/string: Likewise.
1955         * testsuite/21_strings/basic_string/operations/ends_with/char.cc: Use __gnu_test::string.
1956         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc: Likewise.
1957         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc: Likewise.
1958         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc: Likewise.
1959         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc: Likewise.
1960         * testsuite/21_strings/basic_string/operations/starts_with/char.cc: Likewise..
1961
1962 2022-08-31  Patrick Palka  <ppalka@redhat.com>
1963
1964         * include/std/ranges (adjacent_view): Define.
1965         (enable_borrowed_range<adjacent_view>): Define.
1966         (__detail::__repeated_tuple): Define.
1967         (adjacent_view::_Iterator): Define.
1968         (adjacent_view::_Sentinel): Define.
1969         (views::__detail::__can_adjacent_view): Define.
1970         (views::_Adjacent): Define.
1971         (views::adjacent): Define.
1972         (views::pairwise): Define.
1973         * testsuite/std/ranges/adaptors/adjacent/1.cc: New test.
1974
1975 2022-08-31  François Dumont  <fdumont@gcc.gnu.org>
1976
1977         * include/debug/formatter.h
1978         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_state): Declare.
1979         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_create_state): Declare.
1980         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full_callback): Define.
1981         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_error_callback): Define.
1982         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full_func): Define.
1983         [_GLIBCXX_HAVE_STACKTRACE](__glibcxx_backtrace_full): Declare.
1984         [_GLIBCXX_HAVE_STACKTRACE](_Error_formatter::_M_backtrace_state): New.
1985         [_GLIBCXX_HAVE_STACKTRACE](_Error_formatter::_M_backtrace_full): New.
1986         * src/c++11/debug.cc [_GLIBCXX_HAVE_STACKTRACE](print_backtrace): New.
1987         (_Error_formatter::_M_error()): Adapt.
1988         * src/libbacktrace/Makefile.am: Add backtrace.c.
1989         * src/libbacktrace/Makefile.in: Regenerate.
1990         * src/libbacktrace/backtrace-rename.h (backtrace_full): New.
1991         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc: New test.
1992         * doc/xml/manual/debug_mode.xml: Document _GLIBCXX_DEBUG_BACKTRACE.
1993         * doc/xml/manual/using.xml: Likewise.
1994
1995 2022-08-31  Patrick Palka  <ppalka@redhat.com>
1996
1997         * testsuite/20_util/logical_traits/requirements/short_circuit.cc: New test.
1998
1999 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
2000
2001         * include/bits/refwrap.h (reference_wrapper::operator()): Add
2002         noexcept-specifier and use __invoke_result instead of result_of.
2003         * testsuite/20_util/reference_wrapper/invoke-noexcept.cc: New test.
2004
2005 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
2006
2007         * testsuite/20_util/reference_wrapper/invoke-2.cc: Improve
2008         comments.
2009         * testsuite/20_util/reference_wrapper/invoke-3.cc: Likewise.
2010         * testsuite/20_util/reference_wrapper/invoke.cc: Likewise.
2011
2012 2022-08-31  Jonathan Wakely  <jwakely@redhat.com>
2013
2014         * include/bits/basic_string.h (basic_string): Add nodiscard
2015         attribute to all relevant functions.
2016         * include/std/string_view (basic_string_view): Likewise.
2017         * testsuite/21_strings/basic_string/capacity/1.cc: Cast unused
2018         results to void.
2019         * testsuite/21_strings/basic_string/capacity/char/1.cc:
2020         Likewise.
2021         * testsuite/21_strings/basic_string/capacity/wchar_t/1.cc:
2022         Likewise.
2023         * testsuite/21_strings/basic_string/cons/char/self_move.cc:
2024         Likewise.
2025         * testsuite/21_strings/basic_string/element_access/char/1.cc:
2026         Likewise.
2027         * testsuite/21_strings/basic_string/element_access/char/21674.cc:
2028         Likewise.
2029         * testsuite/21_strings/basic_string/element_access/wchar_t/1.cc:
2030         Likewise.
2031         * testsuite/21_strings/basic_string/element_access/wchar_t/21674.cc:
2032         Likewise.
2033         * testsuite/21_strings/basic_string/lwg2758.cc: Likewise.
2034         * testsuite/21_strings/basic_string/lwg2946.cc: Likewise.
2035         * testsuite/21_strings/basic_string/operations/contains/nonnull.cc:
2036         Add -Wno-unused-result to options.
2037         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc:
2038         Likewise.
2039         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc:
2040         Likewise.
2041         * testsuite/21_strings/basic_string/operators/char/1.cc: Cast
2042         unused results to void.
2043         * testsuite/21_strings/basic_string/operators/wchar_t/1.cc:
2044         Likewise.
2045         * testsuite/21_strings/basic_string_view/capacity/1.cc:
2046         Likewise.
2047         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
2048         Likewise.
2049         * testsuite/21_strings/basic_string_view/element_access/char/2.cc:
2050         Likewise.
2051         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
2052         Likewise.
2053         * testsuite/21_strings/basic_string_view/element_access/wchar_t/2.cc:
2054         Likewise.
2055         * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc:
2056         Likewise.
2057         Add -Wno-unused-result to options.
2058         * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc:
2059         Likewise.
2060         * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc:
2061         Likewise.
2062         * testsuite/27_io/basic_stringbuf/sputbackc/char/1.cc: Cast
2063         unused results to void.
2064         * testsuite/27_io/basic_stringbuf/sputbackc/wchar_t/1.cc:
2065         Likewise.
2066         * testsuite/27_io/basic_stringbuf/sungetc/char/1.cc: Likewise.
2067         * testsuite/27_io/basic_stringbuf/sungetc/wchar_t/1.cc:
2068         Likewise.
2069
2070 2022-08-27  Patrick Palka  <ppalka@redhat.com>
2071
2072         * testsuite/20_util/logical_traits/requirements/base_classes.cc: New test.
2073
2074 2022-08-26  Patrick Palka  <ppalka@redhat.com>
2075
2076         * include/std/ranges (zip_view::_Iterator::operator<): Remove
2077         as per LWG 3692.
2078         (zip_view::_Iterator::operator>): Likewise.
2079         (zip_view::_Iterator::operator<=): Likewise.
2080         (zip_view::_Iterator::operator>=): Likewise.
2081         (zip_view::_Iterator::operator<=>): Remove three_way_comparable
2082         constraint as per LWG 3692.
2083         (zip_transform_view::_Iterator): Ditto as per LWG 3702.
2084
2085 2022-08-26  Patrick Palka  <ppalka@redhat.com>
2086
2087         * include/std/ranges (zip_view::_Iterator): Befriend
2088         zip_transform_view.
2089         (__detail::__range_iter_cat): Define.
2090         (zip_transform_view): Define.
2091         (zip_transform_view::_Iterator): Define.
2092         (zip_transform_view::_Sentinel): Define.
2093         (views::__detail::__can_zip_transform_view): Define.
2094         (views::_ZipTransform): Define.
2095         (views::zip_transform): Define.
2096         * testsuite/std/ranges/zip_transform/1.cc: New test.
2097
2098 2022-08-26  Patrick Palka  <ppalka@redhat.com>
2099
2100         * include/std/type_traits (enable_if, __enable_if_t): Define them
2101         earlier.
2102         (__detail::__first_t): Define.
2103         (__detail::__or_fn, __detail::__and_fn): Declare.
2104         (__or_, __and_): Redefine as alias templates in terms of __or_fn
2105         and __and_fn.
2106         (__not_): Redefine as an alias template.
2107         (__detail::__disjunction_impl, __detail::__conjunction_impl):
2108         Define.
2109         (conjuction, disjunction): Redefine in terms of __disjunction_impl
2110         and __conjunction_impl.
2111
2112 2022-08-26  Jonathan Wakely  <jwakely@redhat.com>
2113
2114         * include/std/system_error (error_code::_Check): New alias
2115         template for constructor SFINAE constraint.
2116         (error_code::error_code(ErrorCodeEnum)): Use it.
2117         (error_code::operator=(ErrorCodeEnum)): Remove.
2118         (error_condition::_Check): New alias template for constraint.
2119         (error_condition::error_condition(ErrorConditionEnum)): Use it.
2120         (error_condition::operator=(ErrorConditionEnum)): Remove.
2121         * testsuite/19_diagnostics/error_code/cons/1.cc: Check
2122         constructor taking user-defined error enum.
2123         * testsuite/19_diagnostics/error_condition/cons/1.cc: Likewise.
2124
2125 2022-08-26  Jonathan Wakely  <jwakely@redhat.com>
2126
2127         * include/bits/basic_string.h (starts_with, ends_with, contains):
2128         Add nonnull attribute.
2129         * include/bits/cow_string.h (starts_with, ends_with, contains):
2130         Likewise.
2131         * include/std/string_view (starts_with, ends_with, contains):
2132         Likewise.
2133         * testsuite/21_strings/basic_string/operations/contains/nonnull.cc
2134         * testsuite/21_strings/basic_string/operations/ends_with/nonnull.cc
2135         * testsuite/21_strings/basic_string/operations/starts_with/nonnull.cc
2136         * testsuite/21_strings/basic_string_view/operations/contains/nonnull.cc
2137         * testsuite/21_strings/basic_string_view/operations/ends_with/nonnull.cc
2138         * testsuite/21_strings/basic_string_view/operations/starts_with/nonnull.cc
2139
2140 2022-08-25  Patrick Palka  <ppalka@redhat.com>
2141
2142         * include/std/ranges (lazy_split_view::_OuterIter::_M_current):
2143         Remove redundant comment.
2144         (lazy_split_view::_M_current): Likewise.
2145         (common_view::common_view): Remove commented out view-converting
2146         constructor as per LWG3405.
2147         (elements_view::_Iterator::_Iterator): Uglify 'current' and 'i'.
2148
2149 2022-08-24  Patrick Palka  <ppalka@redhat.com>
2150
2151         * include/bits/ranges_algo.h (__min_fn, min): Move to ...
2152         * include/bits/ranges_util.h: ... here, in order to avoid
2153         including all of ranges_algo.h from <ranges>.
2154         * include/std/ranges (__detail::__zip_is_common): Define for
2155         C++23 as per P2321R2.
2156         (__detail::__tuple_or_pair): Likewise.
2157         (__detail::__tuple_or_pair_t): Likewise.
2158         (__detail::__tuple_transform): Likewise.
2159         (__detail::__tuple_for_each): Likewise.
2160         (zip_view): Likewise.
2161         (enable_borrowed_range<zip_view>): Likewise.
2162         (__detail::__all_random_access): Likewise.
2163         (__detail::__all_bidirectional): Likewise.
2164         (__detail::__all_forward): Likewise.
2165         (__detail::__zip_view_iter_cat): Likewise.
2166         (zip_view::_Iterator): Likewise.
2167         (zip_view::_Sentinel): Likewise.
2168         * testsuite/std/ranges/zip/1.cc: New test.
2169
2170 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
2171
2172         Revert:
2173         2022-08-24  Will Hawkins  <whh8b@obs.cr>
2174
2175         * include/bits/basic_string.h (operator+(const string&, const char*)):
2176         Remove naive implementation.
2177         * include/bits/basic_string.tcc (operator+(const string&, const char*)):
2178         Add single-allocation implementation.
2179
2180 2022-08-24  Patrick Palka  <ppalka@redhat.com>
2181
2182         * include/bits/stl_pair.h (pair::swap const): Add non-standard
2183         is_swappable_v constraints.
2184         * include/std/tuple (tuple::swap const): Likewise.
2185         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Correct some
2186         asserts in C++23 mode.
2187
2188 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
2189
2190         * include/bits/stl_algo.h (__stable_sort): Cast size to
2191         iterator's difference type.
2192         * testsuite/25_algorithms/stable_sort/4.cc: New test.
2193
2194 2022-08-24  Will Hawkins  <whh8b@obs.cr>
2195
2196         * include/bits/basic_string.h (operator+(const string&, const char*)):
2197         Remove naive implementation.
2198         * include/bits/basic_string.tcc (operator+(const string&, const char*)):
2199         Add single-allocation implementation.
2200
2201 2022-08-24  Jonathan Wakely  <jwakely@redhat.com>
2202
2203         * testsuite/20_util/duration_cast/rounding.cc: Check abs with
2204         non-reduced duration.
2205
2206 2022-08-23  Patrick Palka  <ppalka@redhat.com>
2207
2208         * include/bits/stl_bvector.h (_Bit_reference::operator=): Define
2209         const overload for C++23 as per P2321R2.
2210         * include/bits/stl_pair.h (pair::swap): Likewise.
2211         (pair::pair): Define additional converting constructors for
2212         C++23 as per P2321R2.
2213         (pair::operator=): Define const overloads for C++23 as per
2214         P2321R2.
2215         (swap): Define overload taking const pair& for C++23 as per
2216         P2321R2.
2217         (basic_common_reference): Define partial specialization for
2218         pair for C++23 as per P2321R2.
2219         (common_type): Likewise.
2220         * include/bits/uses_allocator_args.h
2221         (uses_allocator_construction_args): Define additional pair
2222         overloads for C++23 as per P2321R2.
2223         * include/std/tuple (_Tuple_impl::_Tuple_impl): Define
2224         additional converting constructors for C++23 as per P2321R2.
2225         (_Tuple_impl::_M_assign): Define const overloads for C++23
2226         as per P2321R2.
2227         (_Tuple_impl::_M_swap): Likewise.
2228         (tuple::__constructible): Define as a convenient renaming of
2229         _TCC<true>::__constructible.
2230         (tuple::__convertible): As above but for _TCC<true>::__convertible.
2231         (tuple::tuple): Define additional converting constructors for
2232         C++23 as per P2321R2.
2233         (tuple::operator=): Define const overloads for C++23 as per
2234         P2321R2.
2235         (tuple::swap): Likewise.
2236         (basic_common_reference): Define partial specialization for
2237         tuple for C++23 as per P2321R2.
2238         (common_type): Likewise.
2239         * testsuite/20_util/pair/p2321r2.cc: New test.
2240         * testsuite/20_util/tuple/p2321r2.cc: New test.
2241         * testsuite/23_containers/vector/bool/element_access/1.cc: New test.
2242
2243 2022-08-23  Patrick Palka  <ppalka@redhat.com>
2244
2245         * include/std/tuple (_TupleConstraints::__convertible): Define.
2246         (_TupleConstraints::__constructible): Define.
2247         (_TupleConstraints::__is_explicitly_constructible): Redefine this
2248         in terms of __convertible and __constructible.
2249         (_TupleConstraints::__is_implicitly_constructible): Likewise.
2250
2251 2022-08-23  Jonathan Wakely  <jwakely@redhat.com>
2252
2253         PR libstdc++/106589
2254         * include/std/variant (__do_visit): Handle is_void<R> for zero
2255         argument case.
2256         * testsuite/20_util/variant/visit_r.cc: Check std::visit<void>(v).
2257
2258 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
2259
2260         PR libstdc++/105678
2261         * doc/xml/manual/using.xml: Document -lstdc++_libbacktrace
2262         requirement for using std::stacktrace. Also adjust -frtti and
2263         -fexceptions to document non-default (i.e. negative) forms.
2264         * doc/html/*: Regenerate.
2265
2266 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
2267
2268         PR libstdc++/106695
2269         * include/bits/std_thread.h (thread::_State_impl): Forward
2270         individual arguments to _Invoker constructor.
2271         (thread::_Invoker): Add constructor. Delete copies.
2272         * include/std/future (__future_base::_Deferred_state): Forward
2273         individual arguments to _Invoker constructor.
2274         (__future_base::_Async_state_impl): Likewise.
2275         * testsuite/30_threads/async/106695.cc: New test.
2276         * testsuite/30_threads/thread/106695.cc: New test.
2277
2278 2022-08-22  Jonathan Wakely  <jwakely@redhat.com>
2279
2280         PR libstdc++/106607
2281         * include/bits/regex_compiler.tcc (_Compiler::_M_cur_int_value):
2282         Use built-ins to check for integer overflow in back-reference
2283         number.
2284         * testsuite/28_regex/basic_regex/106607.cc: New test.
2285
2286 2022-08-17  Keef Aragon  <keef.aragon@konscious.net>
2287
2288         * libsupc++/eh_alloc.cc (pool::free): Inverse comparison.
2289
2290 2022-08-08  François Dumont  <fdumont@gcc.gnu.org>
2291
2292         * include/debug/formatter.h (__singular_value_init): New _Iterator_state enum entry.
2293         (_Parameter<>(const _Safe_iterator<>&, const char*, _Is_iterator)): Check if iterator
2294         parameter is value-initialized.
2295         (_Parameter<>(const _Safe_local_iterator<>&, const char*, _Is_iterator)): Likewise.
2296         * include/debug/safe_iterator.h (_Safe_iterator<>::_M_value_initialized()): New. Adapt
2297         checks.
2298         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_M_value_initialized()): New.
2299         Adapt checks.
2300         * src/c++11/debug.cc (_Safe_iterator_base::_M_reset): Do not reset _M_version.
2301         (print_field(PrintContext&, const _Parameter&, const char*)): Adapt state_names.
2302         * testsuite/23_containers/deque/debug/iterator1_neg.cc: New test.
2303         * testsuite/23_containers/deque/debug/iterator2_neg.cc: New test.
2304         * testsuite/23_containers/forward_list/debug/iterator1_neg.cc: New test.
2305         * testsuite/23_containers/forward_list/debug/iterator2_neg.cc: New test.
2306         * testsuite/23_containers/forward_list/debug/iterator3_neg.cc: New test.
2307
2308 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
2309
2310         * include/experimental/scope (__cpp_lib_experimental_scope):
2311         Define.
2312         * testsuite/experimental/scopeguard/uniqueres.cc: Check macro.
2313
2314 2022-08-05  Jonathan Wakely  <jwakely@redhat.com>
2315
2316         * include/Makefile.am: Add new header.
2317         * include/Makefile.in: Regenerate.
2318         * include/experimental/scope: New file.
2319         * testsuite/experimental/scopeguard/uniqueres.cc: New test.
2320         * testsuite/experimental/scopeguard/exit.cc: New test.
2321
2322 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
2323
2324         * include/std/string_view (basic_string_view(Range&&)): Add
2325         explicit as per P2499R0.
2326         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
2327         Adjust implicit conversions. Check implicit conversions fail.
2328         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
2329         Likewise.
2330
2331 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
2332
2333         * include/bits/fs_dir.h (directory_iterator): Add comparison
2334         with std::default_sentinel_t. Remove redundant operator!= for
2335         C++20.
2336         * (recursive_directory_iterator): Likewise.
2337         * include/bits/iterator_concepts.h [!__cpp_lib_concepts]
2338         (default_sentinel_t, default_sentinel): Define even if concepts
2339         are not supported.
2340         * include/bits/regex.h (regex_iterator): Add comparison with
2341         std::default_sentinel_t. Remove redundant operator!= for C++20.
2342         (regex_token_iterator): Likewise.
2343         (regex_token_iterator::_M_end_of_seq()): Add noexcept.
2344         * testsuite/27_io/filesystem/iterators/lwg3719.cc: New test.
2345         * testsuite/28_regex/iterators/regex_iterator/lwg3719.cc:
2346         New test.
2347         * testsuite/28_regex/iterators/regex_token_iterator/lwg3719.cc:
2348         New test.
2349
2350 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
2351
2352         * include/std/expected (unexpected::_M_val): Rename to _M_unex.
2353         (bad_expected_access::_M_val): Likewise.
2354
2355 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
2356
2357         * include/bits/ios_base.h (__cpp_lib_ios_noreplace): Update
2358         value to 202207L.
2359         * include/std/version (__cpp_lib_ios_noreplace): Likewise.
2360         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: Check
2361         for new value.
2362         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
2363         Likewise.
2364
2365 2022-08-04  Jonathan Wakely  <jwakely@redhat.com>
2366
2367         PR libstdc++/106183
2368         * include/bits/atomic_wait.h (__waiter_pool_base::_M_notify):
2369         Move increment of _M_ver here.
2370         [!_GLIBCXX_HAVE_PLATFORM_WAIT]: Lock mutex around increment.
2371         Use relaxed memory order and always notify all waiters.
2372         (__waiter_base::_M_do_wait) [!_GLIBCXX_HAVE_PLATFORM_WAIT]:
2373         Check value again after locking mutex.
2374         (__waiter_base::_M_notify): Remove increment of _M_ver.
2375
2376 2022-08-04  Ulrich Drepper  <drepper@gmail.com>
2377
2378         * python/libstdcxx/v6/printers.py (class StdTuplePrinter): Use
2379         zero-based indeces just like std:get takes.
2380
2381 2022-07-29  Jonathan Wakely  <jwakely@redhat.com>
2382
2383         PR libstdc++/104443
2384         * include/bits/stl_iterator.h (common_iterator::operator->):
2385         Change return type to just auto.
2386
2387 2022-07-26  Thomas Rodgers  <trodgers@redhat.com>
2388
2389         * include/bits/atomic_wait.h (__atomic_spin): Merge spin loops.
2390
2391 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
2392
2393         PR libstdc++/100823
2394         * include/bits/stl_iterator.h (common_iterator): Define
2395         destructor, copy constructor and move constructor as trivial
2396         when the underlying types allow.
2397         * testsuite/24_iterators/common_iterator/100823.cc: Check
2398         triviality of special members.
2399
2400 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
2401
2402         PR libstdc++/100823
2403         * include/bits/stl_iterator.h (common_iterator): Define move
2404         constructor and move assignment operator.
2405         (common_iterator::_M_assign): New function implementing
2406         assignment.
2407         (common_iterator::operator=): Use _M_assign.
2408         (common_iterator::_S_valueless): New constant.
2409         * testsuite/24_iterators/common_iterator/100823.cc: New test.
2410
2411 2022-07-20  Jonathan Wakely  <jwakely@redhat.com>
2412
2413         * include/bits/stl_iterator.h (common_iterator): Fix incorrect
2414         uses of is_nothrow_assignable_v. Fix inconsistent constraints on
2415         friend declaration. Do not move argument in copy constructor.
2416         * testsuite/24_iterators/common_iterator/1.cc: Check for
2417         noexcept constructibnle/assignable.
2418
2419 2022-07-19  François Dumont  <fdumont@gcc.gnu.org>
2420
2421         * include/debug/debug.h [_GLIBCXX_DEBUG](__glibcxx_requires_string): Define
2422         using _GLIBCXX_DEBUG_PEDASSERT.
2423         [_GLIBCXX_DEBUG](__glibcxx_requires_string_len): Likewise.
2424         * include/debug/macros.h
2425         (__glibcxx_check_string, __glibcxx_check_string_len): Move...
2426         * include/debug/string
2427         (__glibcxx_check_string, __glibcxx_check_string_len): ...here. And define depending
2428         on _GLIBCXX_DEBUG_PEDANTIC no matter if _GLIBCXX_DEBUG is defined.
2429         Add using of std::string find, rfind, find_first_of, find_last_of, find_first_not_of
2430         and find_last_not_of. Remove debug implementations having no debug assertion.
2431         * testsuite/util/testsuite_string.h: New file. Provides __gnu_test::string and
2432         __gnu_test::wtring which definition depends on _GLIBCXX_DEBUG.
2433         * testsuite/21_strings/basic_string/debug/find1_neg.cc: New test case.
2434         * testsuite/21_strings/basic_string/debug/find2_neg.cc: New test case.
2435         * testsuite/21_strings/basic_string/operations/find/char/1.cc:
2436         Include <testsuite_string.h> and use __gnu_test::string.
2437         * testsuite/21_strings/basic_string/operations/find/char/2.cc: Likewise.
2438         * testsuite/21_strings/basic_string/operations/find/char/3.cc: Likewise.
2439         * testsuite/21_strings/basic_string/operations/find/char/4.cc: Likewise.
2440         * testsuite/21_strings/basic_string/operations/find/char/5.cc: Likewise.
2441         * testsuite/21_strings/basic_string/operations/find/char/6.cc: Likewise.
2442         * testsuite/21_strings/basic_string/operations/find/wchar_t/1.cc:
2443         Include <testsuite_string.h> and use __gnu_test::wstring.
2444         * testsuite/21_strings/basic_string/operations/find/wchar_t/2.cc: Likewise.
2445         * testsuite/21_strings/basic_string/operations/find/wchar_t/3.cc: Likewise.
2446         * testsuite/21_strings/basic_string/operations/find/wchar_t/4.cc: Likewise.
2447         * testsuite/21_strings/basic_string/operations/find/wchar_t/5.cc: Likewise.
2448         * testsuite/21_strings/basic_string/operations/find/wchar_t/6.cc: Likewise.
2449
2450 2022-07-19  Jonathan Wakely  <jwakely@redhat.com>
2451
2452         * include/std/type_traits (__cpp_lib_reference_from_temporary)
2453         (reference_constructs_from_temporary)
2454         (reference_converts_from_temporary): Only define when the
2455         built-ins are available.
2456
2457 2022-07-19  Marco Falke  <falke.marco@gmail.com>
2458
2459         * include/std/charconv (__from_chars_alnum_to_val): Replace
2460         implicit conversion from int to unsigned char with explicit
2461         cast.
2462
2463 2022-07-19  Sebastian Huber  <sebastian.huber@embedded-brains.de>
2464
2465         * configure: Regnerate.
2466         * configure.ac (newlib, *-rtems*): Remove HAVE_POLL.
2467
2468 2022-07-18  François Dumont  <fdumont@gcc.gnu.org>
2469
2470         * include/bits/stl_algo.h
2471         (__merge_adaptive): Adapt to merge only when buffer is large enough..
2472         (__merge_adaptive_resize): New, adapt merge when buffer is too small.
2473         (__inplace_merge): Adapt, use latter.
2474         (__stable_sort_adaptive): Adapt to sort only when buffer is large enough.
2475         (__stable_sort_adaptive_resize): New, adapt sort when buffer is too small.
2476         (__stable_sort): Adapt, use latter.
2477
2478 2022-07-15  Marek Polacek  <polacek@redhat.com>
2479
2480         PR c++/104477
2481         * include/std/type_traits (reference_constructs_from_temporary,
2482         reference_converts_from_temporary): New class templates.
2483         (reference_constructs_from_temporary_v,
2484         reference_converts_from_temporary_v): New variable templates.
2485         (__cpp_lib_reference_from_temporary): Define for C++23.
2486         * include/std/version (__cpp_lib_reference_from_temporary): Define for
2487         C++23.
2488         * testsuite/20_util/variable_templates_for_traits.cc: Test
2489         reference_constructs_from_temporary_v and
2490         reference_converts_from_temporary_v.
2491         * testsuite/20_util/reference_from_temporary/value.cc: New test.
2492         * testsuite/20_util/reference_from_temporary/value2.cc: New test.
2493         * testsuite/20_util/reference_from_temporary/version.cc: New test.
2494
2495 2022-07-12  Jonathan Wakely  <jwakely@redhat.com>
2496
2497         PR libstdc++/106248
2498         * include/std/istream [C++17] (operator>>(istream&, char*)):
2499         Set eofbit if we stopped extracting at EOF.
2500         * testsuite/27_io/basic_istream/extractors_character/char/pr106248.cc:
2501         New test.
2502         * testsuite/27_io/basic_istream/extractors_character/wchar_t/pr106248.cc:
2503         New test.
2504
2505 2022-07-12  Jonathan Wakely  <jwakely@redhat.com>
2506
2507         * include/bits/stl_iterator.h (__iter_to_alloc_t): Replace
2508         add_const_t with const-qualifier.
2509         * include/bits/utility.h (tuple_element<N, cv T>): Likewise for
2510         all cv-qualifiers.
2511         * include/std/type_traits (add_const, add_volatile): Replace
2512         typedef-declaration with using-declaration.
2513         (add_cv): Replace add_const and add_volatile with cv-qualifiers.
2514         * include/std/variant (variant_alternative<N, cv T>): Replace
2515         add_const_t, add_volatile_t and add_cv_t etc. with cv-qualifiers.
2516
2517 2022-07-09  François Dumont  <fdumont@gcc.gnu.org>
2518
2519         * include/std/string: Remove obsolete comment about char_traits.h including
2520         stl_algobase.h.
2521
2522 2022-07-07  Jonathan Wakely  <jwakely@redhat.com>
2523
2524         PR c++/89074
2525         * include/bits/char_traits.h (__gnu_cxx::char_traits::move):
2526         Remove workaround for front-end bug.
2527
2528 2022-07-05  Alexandre Oliva  <oliva@adacore.com>
2529
2530         * testsuite/util/testsuite_fs.h (nonexistent_path): Explain
2531         why we need the typecast.
2532
2533 2022-07-05  Alexandre Oliva  <oliva@adacore.com>
2534
2535         * testsuite/util/testsuite_fs.h (nonexistent_path): Convert
2536         the getpid result to an integral type.
2537
2538 2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
2539
2540         PR libstdc++/106162
2541         * include/Makefile.am (largefile-config.h): Add
2542         stamp-${host_alias} prerequisite.
2543         * include/Makefile.in: Regenerate.
2544
2545 2022-07-01  Jonathan Wakely  <jwakely@redhat.com>
2546
2547         * include/bits/fs_ops.h: Add nodiscard to all pure functions.
2548         * include/experimental/bits/fs_ops.h: Likewise.
2549         * testsuite/27_io/filesystem/operations/all.cc: Do not discard
2550         results of absolute and canonical.
2551         * testsuite/27_io/filesystem/operations/absolute.cc: Cast
2552         discarded result to void.
2553         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
2554         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
2555         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
2556         * testsuite/27_io/filesystem/operations/read_symlink.cc:
2557         Likewise.
2558         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
2559         * testsuite/27_io/filesystem/operations/symlink_status.cc:
2560         Likewise.
2561         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2562         Likewise.
2563         * testsuite/experimental/filesystem/operations/canonical.cc:
2564         Likewise.
2565         * testsuite/experimental/filesystem/operations/exists.cc:
2566         Likewise.
2567         * testsuite/experimental/filesystem/operations/is_empty.cc:
2568         Likewise.
2569         * testsuite/experimental/filesystem/operations/read_symlink.cc:
2570         Likewise.
2571         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2572         Likewise.
2573
2574 2022-07-01  Sebastian Huber  <sebastian.huber@embedded-brains.de>
2575
2576         * configure: Regnerate.
2577         * configure.ac (newlib, *-rtems*): Enable TLS support for all RTEMS
2578         targets except bfin, lm32, mips, moxie, or1k, and v850.
2579         For all RTEMS targets, define HAVE_ALIGNED_ALLOC, HAVE_AT_QUICK_EXIT,
2580         HAVE_LINK, HAVE_POLL, HAVE_QUICK_EXIT, HAVE_READLINK, HAVE_SETENV,
2581         HAVE_SLEEP, HAVE_SOCKATMARK, HAVE_STRERROR_L, HAVE_SYMLINK,
2582         HAVE_TRUNCATE, and HAVE_USLEEP.
2583         * crossconfig.m4 (*-rtems*): Remove.
2584
2585 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
2586
2587         * include/bits/utility.h: Fix comment typos.
2588
2589 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
2590
2591         * src/c++17/fs_ops.cc (fs::temp_directory_path()): Include path
2592         in exception.
2593         (fs::temp_directory_path(error_code&)): Rearrange to more
2594         closely match the structure of the first overload.
2595         * src/filesystem/ops.cc (fs::temp_directory_path): Likewise.
2596         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
2597         Check that exception contains the path.
2598         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2599         Likewise.
2600
2601 2022-06-30  Jonathan Wakely  <jwakely@redhat.com>
2602
2603         PR libstdc++/88881
2604         * src/filesystem/ops.cc (has_trailing_slash): New helper
2605         function.
2606         (fs::status): Strip trailing slashes.
2607         (fs::symlink_status): Likewise.
2608         * testsuite/experimental/filesystem/operations/temp_directory_path.cc:
2609         Clean the environment before each test and use TMP instead of
2610         TMPDIR so the test passes on Windows.
2611
2612 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
2613
2614         * src/filesystem/dir-common.h (_Dir_base::_At_path):
2615         Use char_type consistently for paths.
2616
2617 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
2618
2619         * src/c++17/fs_dir.cc (_Dir::dir_and_pathname):: Replace with
2620         current() returning _At_path.
2621         (_Dir::_Dir, _Dir::open_subdir, _Dir::do_unlink): Adjust.
2622         * src/filesystem/dir-common.h (_Dir_base::_At_path): New class.
2623         (_Dir_base::_Dir_Base, _Dir_base::openat): Use _At_path.
2624         * src/filesystem/dir.cc (_Dir::dir_and_pathname): Replace with
2625         current() returning _At_path.
2626         (_Dir::_Dir, _Dir::open_subdir): Adjust.
2627
2628 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
2629
2630         * src/c++17/fs_dir.cc (_Dir::_Dir) [!_GLIBCXX_HAVE_OPENAT]:
2631         Always store pathname if we don't have openat or unlinkat,
2632         because the full path is needed to open sub-directories and
2633         remove entries.
2634
2635 2022-06-28  Jonathan Wakely  <jwakely@redhat.com>
2636
2637         * testsuite/20_util/from_chars/4.cc: Only use log2 if C99 math
2638         functions are available.
2639
2640 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2641
2642         * testsuite/20_util/to_chars/long_double.cc: Use cmath
2643         long double overloads for nexttoward and ldexp.
2644
2645 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2646
2647         * testsuite/experimental/simd/standard_abi_usable.cc: Require
2648         cmath support.
2649         * testsuite/experimental/simd/standard_abi_usable_2.cc:
2650         Likewise.
2651
2652 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2653
2654         * testsuite/26_numerics/complex/proj.cc: Skip test in the
2655         circumstances in which the implementation of proj is known to
2656         be broken.
2657
2658 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2659
2660         * src/c++17/fs_dir.cc (dir_and_pathname): Use dirfd if
2661         _GLIBCXX_HAVE_OPENAT.
2662
2663 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2664
2665         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc
2666         (test06): Don't create symlinks when NO_SYMLINKS is defined.
2667
2668 2022-06-27  Alexandre Oliva  <oliva@adacore.com>
2669
2670         * testsuite/lib/dg-options.exp (add_options_for_net_ts):
2671         Add -Wl,--gc-sections for RTEMS targets.
2672         * testsuite/experimental/net/timer/waitable/dest.cc: Link-time
2673         xfail on RTEMS.
2674         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
2675         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
2676         Execution-time xfail on RTEMS.
2677         * testsuite/experimental/net/internet/resolver/ops/reverse.cc:
2678         Likewise.
2679
2680 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
2681
2682         * testsuite/ext/mt_allocator/22309_thread.cc: Include <string>.
2683
2684 2022-06-27  Joel Brobecker  <brobecker@adacore.com>
2685             Jonathan Wakely  <jwakely@redhat.com>
2686
2687         * testsuite/util/testsuite_fs.h (__gnu_test::nonexistent_path):
2688         Always include a counter in the filename returned.
2689
2690 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
2691
2692         * include/bits/move_only_function.h (_Never_valueless_alt):
2693         Define partial specialization for std::move_only_function.
2694
2695 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
2696
2697         * include/std/variant (_Build_FUN::_S_fun): Define fallback case
2698         as deleted.
2699         (__accepted_index, _Extra_visit_slot_needed): Replace class
2700         templates with variable templates.
2701
2702 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
2703
2704         * include/bits/fs_path.h (__is_path_iter_src): Replace class
2705         template with variable template.
2706
2707 2022-06-27  Jonathan Wakely  <jwakely@redhat.com>
2708
2709         * include/bits/chrono.h (is_clock_v): Define to false.
2710         (is_clock_v<T>): Define partial specialization for true cases.
2711         (is_clock): Define in terms of is_clock_v.
2712
2713 2022-06-24  Xi Ruoyao  <xry111@xry111.site>
2714
2715         * scripts/extract_symvers.in: Use grep -E instead of egrep.
2716         * scripts/run_doxygen: Likewise.
2717
2718 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2719
2720         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
2721         openat.
2722         * configure, config.h.in: Rebuilt.
2723         * src/filesystem/dir-common.h (openat): Use ::openat if
2724         _GLIBCXX_HAVE_OPENAT.
2725         * src/filesystem/dir.cc (dir_and_pathname): Use dirfd if
2726         _GLIBCXX_HAVE_OPENAT.
2727
2728 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2729
2730         * testsuite/27_io/filesystem/operations/rename.cc: xfail on
2731         rtems.
2732         * testsuite/experimental/filesystem/operations/rename.cc:
2733         Likewise.
2734
2735 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2736
2737         * testsuite/util/testsuite_fs.h (NO_LAST_WRITE_TIME): Define
2738         when appropriate.
2739         * testsuite/lib/libstdc++.exp
2740         (check_v3_target_fs_last_write_time): New.
2741         * testsuite/lib/dg-options.exp (dg-require-target-fs-lwt):
2742         New.
2743         * testsuite/27_io/filesystem/operations/last_write_time.cc:
2744         Skip the test if the features are unavailable.
2745         * testsuite/experimental/filesystem/operations/last_write_time.cc:
2746         Likewise.
2747
2748 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2749
2750         * testsuite/util/testsuite_fs.h (NO_SPACE): Define if
2751         appropriate.
2752         * testsuite/lib/libstdc++.exp (check_v3_target_fs_space): New.
2753         * testsuite/lib/dg-options.exp (dg-require-target-fs-space):
2754         New.
2755         * testsuite/27_io/filesystem/operations/space.cc: Require
2756         target-fs-space.
2757         * testsuite/experimental/filesystem/operations/space.cc:
2758         Likewise.
2759
2760 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2761
2762         * testsuite/util/testsuite_fs.h (NO_SYMLINKS): Define on
2763         mingw and when create_symlink is a dummy.
2764         * testsuite/27_io/filesystem/operations/symlink_status.cc:
2765         Drop mingw xfail.
2766         (test01, test02): Don't create symlinks when NO_SYMLINKS is
2767         defined.
2768         * testsuite/27_io/filesystem/operations/canonical.cc (test03):
2769         Likewise.
2770         * testsuite/27_io/filesystem/operations/copy.cc (test02):
2771         Likewise.
2772         * testsuite/27_io/filesystem/operations/create_directories.cc
2773         (test04): Likewise.
2774         * testsuite/27_io/filesystem/operations/create_directory.cc
2775         (test01): Likewise.
2776         * testsuite/27_io/filesystem/operations/permissions.cc
2777         (test03, test04): Likewise.
2778         * testsuite/27_io/filesystem/operations/remove.cc (test01):
2779         Likewise.
2780         * testsuite/27_io/filesystem/operations/remove_all.cc (test01):
2781         Likewise.
2782         * testsuite/27_io/filesystem/operations/rename.cc
2783         (test_symlinks): Likewise.
2784         * testsuite/27_io/filesystem/operations/weakly_canonical.cc
2785         (test01): Likewise.
2786         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc
2787         (test06): Likewise.
2788         * testsuite/experimental/filesystem/operations/copy.cc
2789         (test01): Likewise.
2790         * testsuite/experimental/filesystem/operations/create_directories.cc
2791         (test04): Likewise.
2792         * testsuite/experimental/filesystem/operations/create_directory.cc
2793         (test01): Likewise.
2794         * testsuite/experimental/filesystem/operations/permissions.cc
2795         (test03, test04): Likewise.
2796         * testsuite/experimental/filesystem/operations/remove.cc
2797         (test01): Likewise.
2798         * testsuite/experimental/filesystem/operations/remove_all.cc
2799         (test01): Likewise.
2800         * testsuite/experimental/filesystem/operations/rename.cc
2801         (test01): Likewise.
2802         * testsuite/lib/libstdc++.exp
2803         (v3_check_preprocessor_condition): Add optional inc parameter.
2804         Add it to the test program after include bits/c++config.h.
2805         (check_v3_target_fs_symlinks): New.
2806         * testsuite/lib/dg-options.exp
2807         (dg-require-target-fs-symlinks): New.
2808         * testsuite/27_io/filesystem/operations/read_symlink.cc:
2809         Replace mingw xfail with require target-fs-symlinks.
2810         * testsuite/experimental/filesystem/operations/read_symlink.cc:
2811         Likewise.
2812
2813 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2814
2815         * testsuite/27_io/filesystem/operations/copy.cc (test02):
2816         Select TO after creating FROM.
2817         (test03, test04): Likewise.
2818         * testsuite/experimental/filesystem/operations/copy.cc
2819         (test02, test03, test04): Likewise.
2820
2821 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2822
2823         * testsuite/30_threads/thread/native_handle/cancel.cc: Add an
2824         explicit cancellation point in case sleep_for lacks one.
2825
2826 2022-06-24  Alexandre Oliva  <oliva@adacore.com>
2827
2828         * testsuite/lib/dg-options.exp (add_options_for_net_ts): Add
2829         -lbsd for RTEMS targets.
2830
2831 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
2832
2833         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
2834         rmdir to remove directories.
2835         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
2836         Likewise.
2837
2838 2022-06-23  Jonathan Wakely  <jwakely@redhat.com>
2839
2840         * testsuite/26_numerics/random/random_device/entropy.cc: Use
2841         numeric_limits<unsigned>::digits.
2842
2843 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
2844
2845         * libsupc++/eh_globals.cc [!_GLIBCXX_HAVE_TLS]
2846         (__eh_globals_init::~__eh_globals_init): Clear _S_init first.
2847
2848 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
2849
2850         * testsuite/30_threads/this_thread/60421.cc (test02): Call
2851         sched_yield.
2852
2853 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
2854
2855         * testsuite/20_util/to_chars/long_double.cc: Require cmath.
2856
2857 2022-06-22  Alexandre Oliva  <oliva@adacore.com>
2858
2859         * testsuite/23_containers/bitset/cons/dr1325-2.cc: Work around
2860         global struct bitset.
2861         * testsuite/23_containers/bitset/ext/15361.cc: Likewise.
2862         * testsuite/23_containers/bitset/input/1.cc: Likewise.
2863         * testsuite/23_containers/bitset/to_string/1.cc: Likewise.
2864         * testsuite/23_containers/bitset/to_string/dr396.cc: Likewise.
2865
2866 2022-06-17  Jonathan Wakely  <jwakely@redhat.com>
2867
2868         * testsuite/21_strings/basic_string/cons/char/105995.cc: Add
2869         missing #include.
2870
2871 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
2872
2873         PR libstdc++/105995
2874         * include/bits/basic_string.h (_M_use_local_data): Initialize
2875         the entire SSO buffer.
2876         * testsuite/21_strings/basic_string/cons/char/105995.cc: New test.
2877
2878 2022-06-16  Jonathan Wakely  <jwakely@redhat.com>
2879
2880         PR libstdc++/101482
2881         * include/ext/vstring.h (operator==): Always check lengths
2882         before comparing.
2883
2884 2022-06-15  François Dumont  <fdumont@gcc.gnu.org>
2885
2886         PR libstdc++/105717
2887         * include/bits/hashtable_policy.h (_ConvertToValueType): New.
2888         * include/bits/hashtable.h (_Hashtable<>::_M_insert_unique_aux): New.
2889         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, true_type)): Use latters.
2890         (_Hashtable<>::_M_insert(_Arg&&, const _NodeGenerator&, false_type)): Likewise.
2891         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
2892         const allocator_type&, true_type)): Use this.insert range.
2893         (_Hashtable(_InputIterator, _InputIterator, size_type, const _Hash&, const _Equal&,
2894         const allocator_type&, false_type)): Use _M_insert.
2895         * testsuite/23_containers/unordered_map/cons/56112.cc: Check how many times conversion
2896         is done.
2897         * testsuite/23_containers/unordered_map/insert/105717.cc: New test.
2898         * testsuite/23_containers/unordered_set/insert/105717.cc: New test.
2899
2900 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
2901
2902         PR libstdc++/62187
2903         * include/bits/basic_string.h (operator==): Always compare
2904         lengths before checking string contents.
2905         [!__cpp_lib_three_way_comparison] (operator==, operator!=):
2906         Reorder arguments.
2907
2908 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
2909
2910         PR libstdc++/59048
2911         * include/bits/basic_string.h (compare): Define inline.
2912         * include/bits/basic_string.tcc (compare): Remove out-of-line
2913         definitions.
2914         * include/bits/cow_string.h (compare): Define inline.
2915         * testsuite/21_strings/basic_string/operations/compare/char/3.cc:
2916         New test.
2917
2918 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
2919
2920         * include/bits/new_allocator.h: Fix indentation.
2921         * include/ext/malloc_allocator.h: Likewise.
2922
2923 2022-06-14  Jonathan Wakely  <jwakely@redhat.com>
2924
2925         PR libstdc++/105957
2926         * include/bits/allocator.h (allocator::allocate): Check for
2927         overflow in constexpr allocation.
2928         * testsuite/20_util/allocator/105975.cc: New test.
2929
2930 2022-06-13  Mark Mentovai  <mark@mentovai.com>
2931
2932         * include/experimental/bits/fs_path.h (__detail::__null_terminated):
2933         Rename to __nul_terminated to avoid colliding with a macro in
2934         Apple's SDK.
2935
2936 2022-06-13  Jonathan Wakely  <jwakely@redhat.com>
2937
2938         * include/std/atomic (__atomic_val_t): Use __type_identity_t
2939         instead of atomic<T>::value_type, as per LWG 3220.
2940         * testsuite/29_atomics/atomic/lwg3220.cc: New test.
2941
2942 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
2943
2944         PR libstdc++/105844
2945         * include/experimental/numeric (experimental::gcd): Simplify
2946         assertions. Use __abs_r instead of __absu.
2947         (experimental::lcm): Likewise. Remove use of __detail::__lcm so
2948         overflow can be detected.
2949         * include/std/numeric (__detail::__absu): Rename to __abs_r and
2950         change to allow signed result type, so overflow can be detected.
2951         (__detail::__lcm): Remove.
2952         (gcd): Simplify assertions. Use __abs_r instead of __absu.
2953         (lcm): Likewise. Remove use of __detail::__lcm so overflow can
2954         be detected.
2955         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error lines.
2956         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
2957         * testsuite/26_numerics/gcd/105844.cc: New test.
2958         * testsuite/26_numerics/lcm/105844.cc: New test.
2959
2960 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
2961
2962         PR libstdc++/105880
2963         * libsupc++/eh_globals.cc (eh_globals): Ensure constant init and
2964         prevent destruction during termination.
2965         (__eh_globals_init::_M_init): Replace with static member _S_init.
2966         (__cxxabiv1::__cxa_get_globals_fast): Update.
2967         (__cxxabiv1::__cxa_get_globals): Likewise.
2968
2969 2022-06-10  Jonathan Wakely  <jwakely@redhat.com>
2970
2971         * include/bits/basic_string.h (__hash_str_base): New class
2972         template.
2973         (hash<basic_string<C, char_traits<C>, A>>): Define partial
2974         specialization for each of the standard character types.
2975         (hash<string>, hash<wstring>, hash<u8string>, hash<u16string>)
2976         (hash<u32string>): Remove explicit specializations.
2977         * include/std/string (__hash_string_base): Remove class
2978         template.
2979         (hash<pmr::string>, hash<pmr::wstring>, hash<pmr::u8string>)
2980         (hash<pmr::u16string>, hash<pmr::u32string>): Remove explicit
2981         specializations.
2982         * testsuite/21_strings/basic_string/hash/hash.cc: Test with
2983         custom allocators.
2984         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc:
2985         Likewise.
2986
2987 2022-05-27  Jonathan Wakely  <jwakely@redhat.com>
2988
2989         PR libstdc++/105671
2990         * include/std/sstream (basic_stringbuf::_M_high_mark): Add
2991         always_inline attribute.
2992
2993 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
2994
2995         PR libstdc++/105681
2996         * include/ext/pb_ds/detail/resize_policy/hash_prime_size_policy_imp.hpp:
2997         Limit ga_sizes array to values that fit in size_t.
2998         * include/ext/random [__SIZE_WIDTH < 32] (sfmt86243)
2999         (sfmt86243_64, sfmt132049, sfmt132049_64, sfmt216091)
3000         (sfmt216091_64): Do not declare.
3001
3002 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3003
3004         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Make
3005         lookup for ios_errc and future_errc check versioned namespace.
3006         (StdAtomicPrinter): Strip versioned namespace from typename.
3007
3008 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3009
3010         * src/c++11/Makefile.am: Add new source file.
3011         * src/c++11/Makefile.in: Regenerate.
3012         * src/c++11/cxx11-ios_failure.cc (iostream_category):
3013         Move to ...
3014         * src/c++11/ios_errcat.cc: New file.
3015         * testsuite/27_io/ios_base/failure/error_code.cc: Check that
3016         std::iostream_category() is defined and used for std::io_errc.
3017
3018 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3019
3020         * include/bits/stl_iterator.h (counted_iterator::operator++(int)):
3021         Add 'constexpr' as per LWG 3643.
3022         * testsuite/24_iterators/counted_iterator/lwg3643.cc: New test.
3023
3024 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3025
3026         * include/bits/functional_hash.h (__is_fast_hash): Add doxygen
3027         comment.
3028         * include/bits/hashtable.h: Do not include <bits/stl_function.h>
3029         here.
3030         * include/bits/hashtable_policy.h: Include <bits/stl_pair.h> and
3031         <bits/functional_hash.h>.
3032         * include/bits/unordered_map.h: Include required headers.
3033         * include/bits/unordered_set.h: Likewise.
3034         * include/std/unordered_map: Do not include headers for indirect
3035         dependencies.
3036         * include/std/unordered_set: Likewise.
3037
3038 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3039
3040         * include/bits/ranges_algobase.h: Do not include
3041         <bits/stl_iterator_base_types.h>.
3042         * include/std/string: Likewise.
3043         * include/std/variant: Likewise.
3044
3045 2022-05-26  Nathan Sidwell  <nathan@acm.org>
3046
3047         * include/bits/hashtable.h: Include required headers.
3048         * include/bits/hashtable_policy.h: Likewise.
3049         * include/bits/stl_heap.h: Likewise.
3050         * include/bits/stl_iterator_base_funcs.h: Likewise.
3051
3052 2022-05-26  François Dumont  <fdumont@gcc.gnu.org>
3053
3054         * python/libstdcxx/v6/printers.py (StdSpanPrinter.__init__):
3055         Strip typename from version namespace.
3056
3057 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3058
3059         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Strip
3060         versioned namespace from the template argument too.
3061
3062 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3063
3064         * testsuite/21_strings/basic_string/modifiers/pop_back/char/1.cc:
3065         Moved to...
3066         * testsuite/21_strings/basic_string/modifiers/pop_back/char.cc:
3067         ...here.
3068         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t/1.cc:
3069         Moved to...
3070         * testsuite/21_strings/basic_string/modifiers/pop_back/wchar_t.cc:
3071         ...here.
3072         * testsuite/21_strings/basic_string/modifiers/swap/wchar_t/constexpr.cc:
3073         Moved to...
3074         * testsuite/21_strings/basic_string/modifiers/swap/constexpr-wchar_t.cc:
3075         ...here.
3076         * testsuite/21_strings/basic_string/modifiers/swap/char/constexpr.cc:
3077         Moved to...
3078         * testsuite/21_strings/basic_string/modifiers/swap/constexpr.cc:
3079         ...here.
3080         * testsuite/21_strings/basic_string/operations/contains/char/1.cc:
3081         Moved to...
3082         * testsuite/21_strings/basic_string/operations/contains/char.cc:
3083         ...here.
3084         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc:
3085         Moved to...
3086         * testsuite/21_strings/basic_string/operations/contains/wchar_t.cc:
3087         ...here.
3088         * testsuite/21_strings/basic_string/operations/data/char/1.cc:
3089         Moved to...
3090         * testsuite/21_strings/basic_string/operations/data/char.cc:
3091         ...here.
3092         * testsuite/21_strings/basic_string/operations/data/wchar_t/1.cc:
3093         Moved to...
3094         * testsuite/21_strings/basic_string/operations/data/wchar_t.cc:
3095         ...here.
3096         * testsuite/21_strings/basic_string/operations/ends_with/char/1.cc:
3097         Moved to...
3098         * testsuite/21_strings/basic_string/operations/ends_with/char.cc:
3099         ...here.
3100         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t/1.cc:
3101         Moved to...
3102         * testsuite/21_strings/basic_string/operations/ends_with/wchar_t.cc:
3103         ...here.
3104         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
3105         Moved to...
3106         * testsuite/21_strings/basic_string/operations/starts_with/char.cc:
3107         ...here.
3108         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
3109         Moved to...
3110         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t.cc:
3111         ...here.
3112         * testsuite/21_strings/basic_string/operations/substr/char/1.cc:
3113         Moved to...
3114         * testsuite/21_strings/basic_string/operations/substr/char.cc:
3115         ...here.
3116         * testsuite/21_strings/basic_string/operations/substr/wchar_t/1.cc:
3117         Moved to...
3118         * testsuite/21_strings/basic_string/operations/substr/wchar_t.cc:
3119         ...here.
3120         * testsuite/21_strings/basic_string/range_access/char/1.cc:
3121         Moved to...
3122         * testsuite/21_strings/basic_string/range_access/char.cc:
3123         ...here.
3124         * testsuite/21_strings/basic_string/range_access/wchar_t/1.cc:
3125         Moved to...
3126         * testsuite/21_strings/basic_string/range_access/wchar_t.cc:
3127         ...here.
3128         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char/1.cc:
3129         Moved to...
3130         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/char.cc:
3131         ...here.
3132         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t/1.cc:
3133         Moved to...
3134         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/wchar_t.cc:
3135         ...here.
3136         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char/1.cc:
3137         Moved to...
3138         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/char.cc:
3139         ...here.
3140         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t/1.cc:
3141         Moved to...
3142         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/wchar_t.cc:
3143         ...here.
3144         * testsuite/21_strings/basic_string_view/modifiers/swap/char/1.cc:
3145         Moved to...
3146         * testsuite/21_strings/basic_string_view/modifiers/swap/char.cc:
3147         ...here.
3148         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t/1.cc:
3149         Moved to...
3150         * testsuite/21_strings/basic_string_view/modifiers/swap/wchar_t.cc:
3151         ...here.
3152         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc:
3153         Moved to...
3154         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
3155         ...here.
3156         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc:
3157         Moved to...
3158         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t.cc:
3159         ...here.
3160         * testsuite/21_strings/basic_string_view/operations/data/char/1.cc:
3161         Moved to...
3162         * testsuite/21_strings/basic_string_view/operations/data/char.cc:
3163         ...here.
3164         * testsuite/21_strings/basic_string_view/operations/data/wchar_t/1.cc:
3165         Moved to...
3166         * testsuite/21_strings/basic_string_view/operations/data/wchar_t.cc:
3167         ...here.
3168         * testsuite/21_strings/basic_string_view/operations/ends_with/char/1.cc:
3169         Moved to...
3170         * testsuite/21_strings/basic_string_view/operations/ends_with/char.cc:
3171         ...here.
3172         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t/1.cc:
3173         Moved to...
3174         * testsuite/21_strings/basic_string_view/operations/ends_with/wchar_t.cc:
3175         ...here.
3176         * testsuite/21_strings/basic_string_view/operations/starts_with/char/1.cc:
3177         Moved to...
3178         * testsuite/21_strings/basic_string_view/operations/starts_with/char.cc:
3179         ...here.
3180         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t/1.cc:
3181         Moved to...
3182         * testsuite/21_strings/basic_string_view/operations/starts_with/wchar_t.cc:
3183         ...here.
3184         * testsuite/21_strings/basic_string_view/operations/substr/char/1.cc:
3185         Moved to...
3186         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
3187         ...here.
3188         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t/1.cc:
3189         Moved to...
3190         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
3191         ...here.
3192         * testsuite/21_strings/basic_string_view/range_access/char/1.cc:
3193         Moved to...
3194         * testsuite/21_strings/basic_string_view/range_access/char.cc:
3195         ...here.
3196         * testsuite/21_strings/basic_string_view/range_access/wchar_t/1.cc:
3197         Moved to...
3198         * testsuite/21_strings/basic_string_view/range_access/wchar_t.cc:
3199         ...here.
3200         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
3201         Moved to...
3202         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char.cc:
3203         ...here.
3204         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
3205         Moved to...
3206         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t.cc:
3207         ...here.
3208         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
3209         Moved to...
3210         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t.cc:
3211         ...here.
3212         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
3213         Moved to...
3214         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t.cc:
3215         ...here.
3216         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/1.cc:
3217         Moved to...
3218         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
3219         ...here.
3220         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
3221         Moved to...
3222         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t.cc:
3223         ...here.
3224         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char/1.cc:
3225         Moved to...
3226         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char.cc:
3227         ...here.
3228         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t/1.cc:
3229         Moved to...
3230         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char16_t.cc:
3231         ...here.
3232         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t/1.cc:
3233         Moved to...
3234         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char32_t.cc:
3235         ...here.
3236         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t/1.cc:
3237         Moved to...
3238         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/char8_t.cc:
3239         ...here.
3240         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/1.cc:
3241         Moved to...
3242         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/int.cc:
3243         ...here.
3244         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t/1.cc:
3245         Moved to...
3246         * testsuite/21_strings/basic_string_view/requirements/explicit_instantiation/wchar_t.cc:
3247         ...here.
3248         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char/1.cc:
3249         Moved to...
3250         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char.cc:
3251         ...here.
3252         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t/1.cc:
3253         Moved to...
3254         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char16_t.cc:
3255         ...here.
3256         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t/1.cc:
3257         Moved to...
3258         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char32_t.cc:
3259         ...here.
3260         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t/1.cc:
3261         Moved to...
3262         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/char8_t.cc:
3263         ...here.
3264         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short/1.cc:
3265         Moved to...
3266         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/short.cc:
3267         ...here.
3268         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t/1.cc:
3269         Moved to...
3270         * testsuite/21_strings/char_traits/requirements/explicit_instantiation/wchar_t.cc:
3271         ...here.
3272
3273 2022-05-26  Jonathan Wakely  <jwakely@redhat.com>
3274
3275         * testsuite/20_util/duration/requirements/explicit_instantiation/explicit_instantiation.cc:
3276         Moved to...
3277         * testsuite/20_util/duration/requirements/explicit_instantiation.cc: ...here.
3278         * testsuite/20_util/time_point/requirements/explicit_instantiation/explicit_instantiation.cc:
3279         Moved to...
3280         * testsuite/20_util/time_point/requirements/explicit_instantiation.cc: ...here.
3281         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation/explicit_instantiation.cc:
3282         Moved to...
3283         * testsuite/20_util/unique_ptr/requirements/explicit_instantiation.cc: ...here.
3284
3285 2022-05-25  Jason Merrill  <jason@redhat.com>
3286
3287         * testsuite/20_util/function_objects/constexpr_searcher.cc: Add
3288         constexpr.
3289
3290 2022-05-20  Jonathan Wakely  <jwakely@redhat.com>
3291
3292         * testsuite/26_numerics/random/bernoulli_distribution/operators/values.cc:
3293         Run fewer iterations for simulator targets.
3294         * testsuite/26_numerics/random/binomial_distribution/operators/values.cc:
3295         Likewise.
3296         * testsuite/26_numerics/random/discrete_distribution/operators/values.cc:
3297         Likewise.
3298         * testsuite/26_numerics/random/geometric_distribution/operators/values.cc:
3299         Likewise.
3300         * testsuite/26_numerics/random/negative_binomial_distribution/operators/values.cc:
3301         Likewise.
3302         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
3303         Likewise.
3304         * testsuite/26_numerics/random/uniform_int_distribution/operators/values.cc:
3305         Likewise.
3306
3307 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
3308
3309         * include/bits/char_traits.h: Only include <cstdint> when
3310         necessary.
3311         * include/std/stacktrace: Use __UINTPTR_TYPE__ instead of
3312         uintptr_t.
3313         * src/c++11/cow-stdexcept.cc: Include <stdint.h>.
3314         * src/c++17/floating_to_chars.cc: Likewise.
3315         * testsuite/20_util/assume_aligned/1.cc: Include <cstdint>.
3316         * testsuite/20_util/assume_aligned/3.cc: Likewise.
3317         * testsuite/20_util/shared_ptr/creation/array.cc: Likewise.
3318
3319 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
3320
3321         * include/bits/basic_string.h: Do not include <ext/atomicity.h>
3322         here.
3323         * include/bits/cow_string.h: Include it here.
3324
3325 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
3326
3327         * include/Makefile.am: Add new header.
3328         * include/Makefile.in: Regenerate.
3329         * include/bits/memory_resource.h: New file.
3330         * include/std/deque: Include <bits/memory_resource.h>.
3331         * include/std/forward_list: Likewise.
3332         * include/std/list: Likewise.
3333         * include/std/map: Likewise.
3334         * include/std/memory_resource (pmr::memory_resource): Move to
3335         new <bits/memory_resource.h> header.
3336         (pmr::polymorphic_allocator): Likewise.
3337         * include/std/regex: Likewise.
3338         * include/std/set: Likewise.
3339         * include/std/stacktrace: Likewise.
3340         * include/std/string: Likewise.
3341         * include/std/unordered_map: Likewise.
3342         * include/std/unordered_set: Likewise.
3343         * include/std/vector: Likewise.
3344         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc:
3345         Remove <memory_resource> header and check construction.
3346         * testsuite/23_containers/deque/types/pmr_typedefs.cc: Likewise.
3347         * testsuite/23_containers/forward_list/pmr_typedefs.cc:
3348         Likewise.
3349         * testsuite/23_containers/list/pmr_typedefs.cc: Likewise.
3350         * testsuite/23_containers/map/pmr_typedefs.cc: Likewise.
3351         * testsuite/23_containers/multimap/pmr_typedefs.cc: Likewise.
3352         * testsuite/23_containers/multiset/pmr_typedefs.cc: Likewise.
3353         * testsuite/23_containers/set/pmr_typedefs.cc: Likewise.
3354         * testsuite/23_containers/unordered_map/pmr_typedefs.cc:
3355         Likewise.
3356         * testsuite/23_containers/unordered_multimap/pmr_typedefs.cc:
3357         Likewise.
3358         * testsuite/23_containers/unordered_multiset/pmr_typedefs.cc:
3359         Likewise.
3360         * testsuite/23_containers/unordered_set/pmr_typedefs.cc:
3361         Likewise.
3362         * testsuite/23_containers/vector/pmr_typedefs.cc: Likewise.
3363         * testsuite/28_regex/match_results/pmr_typedefs.cc: Likewise.
3364
3365 2022-05-19  Jonathan Wakely  <jwakely@redhat.com>
3366
3367         * include/std/memory_resource (polymorphic_allocator): Add
3368         non-template equality operator, as proposed for LWG 3683.
3369         * testsuite/20_util/polymorphic_allocator/lwg3683.cc: New test.
3370
3371 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
3372
3373         * src/c++17/memory_resource.cc (set_default_resource): Use
3374         memory_order_acq_rel.
3375         (get_default_resource): Use memory_order_acquire.
3376
3377 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
3378
3379         * include/std/memory_resource (new_delete_resource): Add
3380         nodiscard, returns_nonnull and const attributes.
3381         (null_memory_resource): Likewise.
3382         (set_default_resource, get_default_resource): Add returns_nonnull
3383         attribute.
3384         (memory_resource::is_equal): Add nodiscard attribute.
3385         (operator==, operator!=): Likewise.
3386
3387 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
3388
3389         * include/bits/ios_base.h (io_category): Add const and nodiscard
3390         attributes.
3391         (make_error_code, make_error_condition): Add nodiscard.
3392         * include/std/future (future_category): Add const and nodiscard.
3393         (make_error_code, make_error_condition): Add nodiscard.
3394         * include/std/system_error (generic_category system_category):
3395         Add nodiscard. Replace _GLIBCXX_CONST with C++11 attribute.
3396         (error_code::value, error_code::category, error_code::operator bool)
3397         (error_condition::value, error_condition::category)
3398         (error_condition::operator bool, make_error_code)
3399         (make_error_condition, operator==, operator!=, operator<=>): Add
3400         nodiscard.
3401
3402 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
3403
3404         * testsuite/20_util/expected/synopsis.cc: Skip for versioned
3405         namespace.
3406         * testsuite/27_io/headers/iosfwd/synopsis.cc: Likewise.
3407
3408 2022-05-17  Jonathan Wakely  <jwakely@redhat.com>
3409
3410         * src/Makefile.am [ENABLE_SYMVERS_GNU_NAMESPACE] (cxx11_sources):
3411         Do not build the compatibility*-c++0x.cc objects.
3412         * src/Makefile.in: Regenerate.
3413         * src/c++11/compatibility-c++0x.cc [_GLIBCXX_INLINE_VERSION]:
3414         Refuse to build for the versioned namespace.
3415         * src/c++11/compatibility-chrono.cc: Likewise.
3416         * src/c++11/compatibility-condvar.cc: Likewise.
3417         * src/c++11/compatibility-thread-c++0x.cc: Likewise.
3418         * src/c++11/chrono.cc (system_clock, steady_clock):
3419         Use macros to define in inline namespace _V2, matching the
3420         declarations in <system_error>.
3421         * src/c++11/system_error.cc (system_category, generic_category):
3422         Likewise.
3423
3424 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
3425
3426         * doc/xml/manual/prerequisites.xml: Fix attributes for external
3427         hyperlink.
3428         * doc/html/manual/setup.html: Regenerate.
3429
3430 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
3431
3432         * doc/xml/manual/status_cxx2023.xml: Update with gcc-12 support.
3433         * doc/html/*: Regenerate.
3434
3435 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
3436
3437         * doc/xml/manual/intro.xml: Include new chapter.
3438         * doc/xml/manual/status_cxx2020.xml: Tweak release numbers.
3439         * doc/xml/manual/status_cxx2023.xml: New file.
3440         * doc/html/*: Regenerate.
3441
3442 2022-05-16  Jonathan Wakely  <jwakely@redhat.com>
3443
3444         * doc/html/manual/status.html: Regenerate.
3445         * doc/xml/manual/status_cxx2020.xml: Fix supported version for
3446         C++20 bit operations.
3447
3448 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3449
3450         * include/bits/std_thread.h (thread::_State, thread::_State_ptr):
3451         Declare as private unless _GLIBCXX_THREAD_IMPL is defined.
3452         * src/c++11/thread.cc (_GLIBCXX_THREAD_IMPL): Define.
3453
3454 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3455
3456         * include/std/future (launch): Make operators noexcept.
3457
3458 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3459
3460         * doc/doxygen/user.cfg.in (PREDEFINED): Replace __exception_ptr
3461         with "__unspecified__".
3462         * libsupc++/exception_ptr.h: Improve doxygen docs.
3463         (__exception_ptr::swap): Also declare in namespace std.
3464
3465 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3466
3467         * libsupc++/nested_exception.h (throw_with_nested) [C++17]: Use
3468         if-constexpr instead of tag dispatching.
3469         (rethrow_if_nested) [C++17]: Likewise.
3470         (rethrow_if_nested) [!__cpp_rtti]: Do not use dynamic_cast if it
3471         would require RTTI.
3472         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
3473         New test.
3474
3475 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3476
3477         * doc/doxygen/user.cfg.in (PREDEFINED): Define
3478         _GTHREAD_USE_MUTEX_TIMEDLOCK macro.
3479         * include/bits/std_mutex.h (mutex, lock_guard): Use @since and
3480         @headerfile.
3481         * include/bits/unique_lock.h (unique_lock): Likewise.
3482         * include/std/mutex (recursive_mutex, timed_mutex)
3483         (recursive_timed_mutex, scoped_lock): Likewise.
3484
3485 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3486
3487         * doc/doxygen/user.cfg.in (PREDEFINED): Define
3488         _GLIBCXX23_CONSTEXPR macro.
3489         * include/backward/auto_ptr.h (auto_ptr): Use @deprecated.
3490         * include/bits/unique_ptr.h (default_delete): Use @since and
3491         @headerfile.
3492         * include/std/scoped_allocator: Remove @ingroup from @file
3493         block.
3494
3495 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3496
3497         * include/bits/std_thread.h (thread, thread::id): Improve
3498         doxygen docs.
3499         * include/std/future: Likewise.
3500         * include/std/thread (jthread): Likewise.
3501
3502 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3503
3504         * include/bits/ostream_insert.h: Mark helper functions as
3505         undocumented by Doxygen.
3506         * include/bits/stl_algo.h: Use markdown for formatting and mark
3507         helper functions as undocumented.
3508         * include/bits/stl_numeric.h:  Likewise.
3509         * include/bits/stl_pair.h (pair): Add @headerfile.
3510
3511 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3512
3513         * doc/doxygen/user.cfg.in (PREDEFINED): Define __allocator_base
3514         so that Doxygen shows the right base-class for std::allocator.
3515         * include/bits/alloc_traits.h: Improve doxygen docs.
3516         * include/bits/allocator.h: Likewise.
3517         * include/bits/new_allocator.h: Likewise.
3518         * include/ext/new_allocator.h: Likewise.
3519
3520 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3521
3522         * doc/doxygen/user.cfg.in (PREDEFINED): Define macro
3523         _GLIBCXX_DOXYGEN_ONLY to expand its argument.
3524         * include/bits/c++config (_GLIBCXX_DOXYGEN_ONLY): Define.
3525         * include/bits/regex.h: Improve doxygen docs.
3526         * include/bits/regex_constants.h: Likewise.
3527         * include/bits/regex_error.h: Likewise.
3528
3529 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3530
3531         * include/std/atomic: Suppress doxygen docs for
3532         implementation details.
3533         * include/bits/atomic_base.h: Likewise.
3534         * include/bits/shared_ptr_atomic.h: Use markdown. Fix grouping
3535         so that std::atomic is not added to the pointer abstractions
3536         group.
3537
3538 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3539
3540         * include/std/system_error: Improve doxygen comments.
3541
3542 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3543
3544         * include/bits/ptr_traits.h: Add some doxygen comments.
3545
3546 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3547
3548         * doc/doxygen/user.cfg.in (PREDEFINED): Expand new macros to
3549         nothing.
3550         * include/bits/c++config (_GLIBCXX_BEGIN_INLINE_ABI_NAMESPACE)
3551         (_GLIBCXX_END_INLINE_ABI_NAMESPACE): Define new macros.
3552         * include/bits/algorithmfwd.h (_V2::__rotate): Use new macros
3553         for the namespace.
3554         * include/bits/chrono.h (chrono::_V2::system_clock): Likewise.
3555         * include/bits/stl_algo.h (_V2::__rotate): Likewise.
3556         * include/std/condition_variable (_V2::condition_variable_any):
3557         Likewise.
3558         * include/std/system_error (_V2::error_category): Likewise.
3559
3560 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3561
3562         * include/bits/mofunc_impl.h: Fix doxygen command.
3563
3564 2022-05-13  Jonathan Wakely  <jwakely@redhat.com>
3565
3566         * doc/doxygen/user.cfg.in (GROUP_NESTED_COMPOUNDS): Set to NO.
3567         (CLASS_DIAGRAMS): Remove obsolete option.
3568
3569 2022-05-12  Jonathan Wakely  <jwakely@redhat.com>
3570
3571         * config/locale/dragonfly/numeric_members.cc: Remove whitespace.
3572         * config/locale/gnu/numeric_members.cc: Likewise.
3573         * include/bits/locale_facets_nonio.h: Likewise.
3574         * libsupc++/typeinfo: Likewise.
3575
3576 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
3577
3578         PR libstdc++/105284
3579         * include/std/iosfwd: Add declarations for <spanstream> class
3580         templates and typedefs.
3581         * include/std/spanstream (basic_spanbuf, basic_ispanstream)
3582         (basic_ospanstream, basic_spanstream): Remove default template
3583         arguments.
3584         * testsuite/27_io/headers/iosfwd/synopsis.cc: Add <spanstream>
3585         declarations.
3586         * testsuite/27_io/headers/iosfwd/types.cc: Check <spanstream>
3587         default arguments.
3588
3589 2022-05-10  Jonathan Wakely  <jwakely@redhat.com>
3590
3591         PR libstdc++/105284
3592         * include/std/iosfwd: Add declarations for <synstream> class
3593         templates and typedefs.
3594         * include/std/syncstream (basic_syncbuf, basic_osyncstream):
3595         Remove default template arguments.
3596         * testsuite/27_io/headers/iosfwd/synopsis.cc: New test.
3597         * testsuite/27_io/headers/iosfwd/types.cc: New test.
3598
3599 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3600
3601         * include/bits/random.tcc (operator==): Only check
3602         normal_distribution::_M_saved_available once.
3603         * testsuite/26_numerics/random/normal_distribution/operators/equal.cc:
3604         Check equality after state changes.
3605         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
3606         lineno.
3607
3608 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3609
3610         PR libstdc++/105502
3611         * include/bits/random.tcc
3612         (operator>>(basic_istream<C,T>&, normal_distribution<R>&)):
3613         Update state when __state_avail is false.
3614         * testsuite/26_numerics/random/normal_distribution/operators/serialize.cc:
3615         Check that deserialized object equals serialized one.
3616
3617 2022-05-06  Alexandre Oliva  <oliva@adacore.com>
3618
3619         * include/experimental/bits/simd.h [__ALTIVEC__]: Require VSX
3620         for double, long long, and 64-bit long intrinsic types.
3621         [__ALTIVEC__] (__intrinsic_type): Mention 128-bit in
3622         preexisting long double diagnostic, adjust no-VSX double
3623         diagnostic to cover 64-bit long double as well.
3624
3625 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3626
3627         PR libstdc++/104731
3628         * testsuite/27_io/filesystem/iterators/error_reporting.cc:
3629         Use a trailing char array as storage for dirent::d_name.
3630
3631 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3632
3633         * include/std/stacktrace: Do not include <cxxabi.h>.
3634         (__cxa_demangle): Declare.
3635
3636 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3637
3638         PR libstdc++/99871
3639         * include/bits/specfun.h: Use visibility attribute on namespace,
3640         instead of pragma push/pop.
3641         * libsupc++/compare: Likewise.
3642         * libsupc++/exception: Likewise.
3643         * libsupc++/exception.h: Likewise.
3644         * libsupc++/exception_ptr.h: Likewise.
3645         * libsupc++/initializer_list: Likewise.
3646         * libsupc++/nested_exception.h: Likewise.
3647
3648 2022-05-06  Jonathan Wakely  <jwakely@redhat.com>
3649
3650         * doc/xml/manual/test.xml: Remove requirement for copyright and
3651         GPL notice in tests.
3652         * doc/html/manual/test.html: Regenerate.
3653
3654 2022-05-05  Jonathan Wakely  <jwakely@redhat.com>
3655
3656         * include/experimental/memory_resource [!__cpp_rtti]
3657         (__resource_adaptor_imp::do_is_equal): Do not use dynamic_cast
3658         when RTTI is disabled.
3659         * testsuite/17_intro/freestanding.cc: Require RTTI.
3660         * testsuite/18_support/exception/38732.cc: Likewise.
3661         * testsuite/18_support/exception_ptr/rethrow_exception.cc:
3662         Likewise.
3663         * testsuite/18_support/nested_exception/68139.cc: Likewise.
3664         * testsuite/18_support/nested_exception/rethrow_if_nested.cc:
3665         Likewise.
3666         * testsuite/18_support/type_info/103240.cc: Likewise.
3667         * testsuite/18_support/type_info/fundamental.cc: Likewise.
3668         * testsuite/18_support/type_info/hash_code.cc: Likewise.
3669         * testsuite/20_util/any/assign/emplace.cc: Likewise.
3670         * testsuite/20_util/any/cons/in_place.cc: Likewise.
3671         * testsuite/20_util/any/misc/any_cast.cc: Likewise.
3672         * testsuite/20_util/any/observers/type.cc: Likewise.
3673         * testsuite/20_util/function/1.cc: Likewise.
3674         * testsuite/20_util/function/2.cc: Likewise.
3675         * testsuite/20_util/function/3.cc: Likewise.
3676         * testsuite/20_util/function/4.cc: Likewise.
3677         * testsuite/20_util/function/5.cc: Likewise.
3678         * testsuite/20_util/function/6.cc: Likewise.
3679         * testsuite/20_util/function/7.cc: Likewise.
3680         * testsuite/20_util/function/8.cc: Likewise.
3681         * testsuite/20_util/polymorphic_allocator/resource.cc: Likewise.
3682         * testsuite/20_util/shared_ptr/casts/1.cc: Likewise.
3683         * testsuite/20_util/shared_ptr/casts/rval.cc: Likewise.
3684         * testsuite/20_util/shared_ptr/cons/unique_ptr_deleter_ref_2.cc:
3685         Likewise.
3686         * testsuite/20_util/shared_ptr/misc/get_deleter.cc: Likewise.
3687         * testsuite/20_util/typeindex/comparison_operators.cc: Likewise.
3688         * testsuite/20_util/typeindex/comparison_operators_c++20.cc:
3689         Likewise.
3690         * testsuite/20_util/typeindex/hash.cc: Likewise.
3691         * testsuite/20_util/typeindex/hash_code.cc: Likewise.
3692         * testsuite/20_util/typeindex/name.cc: Likewise.
3693         * testsuite/22_locale/ctype/is/string/89728_neg.cc: Likewise.
3694         * testsuite/22_locale/global_templates/standard_facet_hierarchies.cc:
3695         Likewise.
3696         * testsuite/22_locale/global_templates/user_facet_hierarchies.cc:
3697         Likewise.
3698         * testsuite/22_locale/locale/13630.cc: Check type without using
3699         RTTI.
3700         * testsuite/23_containers/array/requirements/non_default_constructible.cc:
3701         Require RTTI.
3702         * testsuite/27_io/basic_ostream/emit/1.cc: Likewise.
3703         * testsuite/27_io/fpos/14320-1.cc: Check type without using RTTI.
3704         * testsuite/27_io/fpos/mbstate_t/12065.cc: Require RTTI.
3705         * testsuite/27_io/ios_base/failure/dual_abi.cc: Likewise.
3706         * testsuite/experimental/any/misc/any_cast.cc: Likewise.
3707         * testsuite/experimental/any/observers/type.cc: Likewise.
3708         * testsuite/experimental/memory_resource/resource_adaptor.cc:
3709         Likewise.
3710         * testsuite/lib/libstdc++.exp (check_effective_target_rtti):
3711         Define new proc.
3712         * testsuite/tr1/3_function_objects/function/1.cc: Likewise.
3713         * testsuite/tr1/3_function_objects/function/2.cc: Likewise.
3714         * testsuite/tr1/3_function_objects/function/3.cc: Likewise.
3715         * testsuite/tr1/3_function_objects/function/4.cc: Likewise.
3716         * testsuite/tr1/3_function_objects/function/5.cc: Likewise.
3717         * testsuite/tr1/3_function_objects/function/6.cc: Likewise.
3718         * testsuite/tr1/3_function_objects/function/7.cc: Likewise.
3719         * testsuite/tr1/3_function_objects/function/8.cc: Likewise.
3720         * testsuite/tr2/bases/value.cc: Likewise.
3721         * testsuite/tr2/direct_bases/value.cc: Likewise.
3722         * testsuite/util/exception/safety.h [!__cpp_rtti]: Don't print
3723         types without RTTI.
3724
3725 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
3726
3727         PR libstdc++/104719
3728         * include/std/array (array::size(), array::max_size())
3729         (array::empty(), array::data()): Add  always_inline attribute.
3730
3731 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
3732
3733         PR libstdc++/104719
3734         * include/std/array (__array_traits::_S_ref): Remove.
3735         (__array_traits::_S_ptr): Remove.
3736         (__array_traits<T, 0>::_Type): Define operator[] and operator T*
3737         to provide an array-like API.
3738         (array::_AT_Type): Remove public typeef.
3739         (array::operator[], array::at, array::front, array::back): Use
3740         index operator to access _M_elems instead of _S_ref.
3741         (array::data): Use implicit conversion from _M_elems to pointer.
3742         (swap(array&, array&)): Use __enable_if_t helper.
3743         (get<I>): Use index operator to access _M_elems.
3744         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
3745         Adjust dg-error line numbers.
3746
3747 2022-05-03  Alexandre Oliva  <oliva@adacore.com>
3748
3749         PR c++/105324
3750         * testsuite/20_util/from_chars/pr105324.cc: Guard test body
3751         with conditional for floating-point overloads of from_char.
3752
3753 2022-05-02  Patrick Palka  <ppalka@redhat.com>
3754
3755         PR libstdc++/103911
3756         * src/c++17/floating_from_chars.cc (find_end_of_float): Accept
3757         two delimeters for the exponent part in the form of a possibly
3758         NULL string of length two.  Don't use std::tolower.
3759         (pattern): Adjust calls to find_end_of_float accordingly.
3760
3761 2022-05-02  Patrick Palka  <ppalka@redhat.com>
3762
3763         PR libstdc++/105441
3764         * src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
3765         Also accept 'P' as the start of the exponent.
3766         * testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
3767
3768 2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
3769
3770         PR libstdc++/105417
3771         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
3772         Regenerate.
3773         * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI]:
3774         Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
3775         symbols as aliases for corresponding symbols without abi-tag.
3776
3777 2022-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3778
3779         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
3780         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
3781         Likewise.
3782         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
3783         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
3784         Likewise.
3785
3786 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
3787
3788         PR libstdc++/99290
3789         * src/c++17/fs_ops.cc (fs::copy): Pass error_code to
3790         directory_iterator constructor, and check on each iteration.
3791         * src/filesystem/ops.cc (fs::copy): Likewise.
3792         * testsuite/27_io/filesystem/operations/copy.cc: Check for
3793         errors during recursion.
3794         * testsuite/experimental/filesystem/operations/copy.cc:
3795         Likewise.
3796
3797 2022-04-28  François Dumont  <fdumont@gcc.gnu.org>
3798
3799         * config/abi/pre/gnu-versioned-namespace.ver: Remove
3800         std::random_device::* pattern.
3801
3802 2022-04-27  Jakub Jelinek  <jakub@redhat.com>
3803
3804         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
3805         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
3806         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
3807         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
3808         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
3809         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
3810         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
3811         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
3812
3813 2022-04-27  Jonathan Wakely  <jwakely@redhat.com>
3814
3815         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Add
3816         support for atomic<shared_ptr<T>> and atomic<weak_ptr<T>>.
3817         (StdAtomicPrinter): New printer.
3818         (build_libstdcxx_dictionary): Register new printer.
3819         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test std::atomic.
3820         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test atomic smart
3821         pointers.
3822
3823 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
3824
3825         * include/bits/shared_ptr_atomic.h (atomic<shared_ptr>): Add
3826         constructor for constant initialization from nullptr_t.
3827         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
3828         Check for new constructor.
3829
3830 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
3831
3832         * include/bits/fs_path.h (hash<filesystem::path>): Define.
3833         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
3834         Check std::hash specialization.
3835
3836 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
3837
3838         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define
3839         conditionally.
3840         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
3841         Define for C++23.
3842         (default_delete, default_delete<T[]>, __uniq_ptr_impl)
3843         (unique_ptr, unique_ptr<T[], D>): Add constexpr to all member
3844         functions.
3845         * include/std/version (__cpp_lib_constexpr_memory): Define new
3846         value for C++23.
3847         * testsuite/20_util/unique_ptr/assign/constexpr.cc: New test.
3848         * testsuite/20_util/unique_ptr/comparison/constexpr.cc: New test.
3849         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc: New test.
3850         * testsuite/20_util/unique_ptr/creation/constexpr.cc: New test.
3851         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: New test.
3852         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc:
3853         New test.
3854
3855 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
3856
3857         PR libstdc++/105375
3858         * include/std/future (packaged_task): Add deduction guides.
3859         * testsuite/30_threads/packaged_task/cons/deduction.cc: New test.
3860
3861 2022-04-25  Philipp Fent  <fent@in.tum.de>
3862
3863         * python/libstdcxx/v6/printers.py (StdSpanPrinter._iterator):
3864         Rename as iterator.
3865         (StdInitializerListPrinter): Define new printer.
3866         (build_libstdcxx_dictionary): Register new printer.
3867         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check printer for
3868         initializer_list.
3869
3870 2022-04-22  Thomas W Rodgers  <trodgers@redhat.com>
3871
3872         PR libstdc++/102994
3873         * include/bits/atomic_base.h (atomic_flag::notify_one,
3874         notify_all): Remove const qualification.
3875         (__atomic_base::notify_one, notify_all): Likewise.
3876         * include/std/atomic (atomic<bool>::notify_one, notify_all):
3877         Likewise.
3878         (atomic::notify_one, notify_all): Likewise.
3879         (atomic<T*>::notify_one, notify_all): Likewise.
3880         (atomic_notify_one, atomic_notify_all): Likewise.
3881         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Adjust test
3882         to account for change in notify_one/notify_all signature.
3883
3884 2022-04-21  Patrick Palka  <ppalka@redhat.com>
3885
3886         * include/std/charconv (__from_chars_alnum_to_val_table):
3887         Simplify initialization of __lower/__upper_letters.
3888         (__from_chars_alnum_to_val): Default the template parameter to
3889         false.
3890         * src/c++17/floating_from_chars.cc (starts_with_ci): Don't
3891         assume the uppercase and lowercase letters are contiguous.
3892         (__floating_from_chars_hex): Likewise.
3893
3894 2022-04-21  Patrick Palka  <ppalka@redhat.com>
3895
3896         PR c++/105297
3897         PR c++/105322
3898         * include/std/charconv (__from_chars_alnum_to_val): Make
3899         initializer for __table dependent in an artificial way.
3900
3901 2022-04-21  Jonathan Wakely  <jwakely@redhat.com>
3902
3903         PR libstdc++/105324
3904         * src/c++17/floating_from_chars.cc (buffer_resource::do_allocate):
3905         Remove assertion.
3906         * testsuite/20_util/from_chars/pr105324.cc: New test.
3907
3908 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
3909
3910         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
3911         Check correct feature test macro.
3912
3913 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
3914
3915         PR libstdc++/93602
3916         * doc/xml/manual/prerequisites.xml: Document libiconv
3917         workarounds.
3918         * doc/html/manual/setup.html: Regenerate.
3919         * src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
3920         * src/Makefile.in: Regenerate.
3921
3922 2022-04-19  Patrick Palka  <ppalka@redhat.com>
3923
3924         * src/c++17/floating_to_chars.cc (_GLIBCXX_ASSERTIONS): Don't
3925         define.
3926         (__floating_to_chars_shortest): Add __builtin_unreachable calls to
3927         squelch false-positive -Wmaybe-uninitialized and -Wreturn-type
3928         warnings.
3929         (__floating_to_chars_precision): Likewise.
3930
3931 2022-04-19  Philipp Fent  <fent@in.tum.de>
3932
3933         * python/libstdcxx/v6/printers.py (StdSpanPrinter): Define.
3934         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test it.
3935
3936 2022-04-19  Jonathan Wakely  <jwakely@redhat.com>
3937
3938         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Fix shell operators.
3939         * configure: Regenerate.
3940
3941 2022-04-18  Patrick Palka  <ppalka@redhat.com>
3942
3943         * include/std/charconv (__from_chars_pow2_base): Manually
3944         unroll the first iteration of the main loop and simplify
3945         accordingly.
3946
3947 2022-04-15  Patrick Palka  <ppalka@redhat.com>
3948
3949         PR libstdc++/104858
3950         * include/bits/ranges_algo.h (__minmax_fn): Avoid dereferencing
3951         __first twice at the start.
3952         * testsuite/25_algorithms/minmax/constrained.cc (test06): New test.
3953
3954 2022-04-15  Patrick Palka  <ppalka@redhat.com>
3955
3956         * include/std/charconv (__from_chars_alnum_to_val_table): Define.
3957         (__from_chars_alnum_to_val): Define.
3958         (__from_chars_binary): Rename to ...
3959         (__from_chars_pow2_base): ... this.  Generalize to handle any
3960         power-of-two base using __from_chars_alnum_to_val.
3961         (__from_chars_digit): Optimize digit recognition to a single
3962         test instead of two tests.  Use [[__unlikely___]] attribute.
3963         (__from_chars_alpha_to_num): Remove.
3964         (__from_chars_alnum): Use __from_chars_alnum_to_val.  Use a
3965         nested loop for the overflow case.  Maintain a lower bound
3966         on the number of available bits in the result and use it to
3967         omit the overflow check.
3968         (from_chars): Adjust appropriately.
3969         * src/c++17/floating_from_chars.cc (ascii_to_hexit): Remove.
3970         (__floating_from_chars_hex): Use __from_chars_alnum_to_val
3971         to recognize a hex digit instead.
3972
3973 2022-04-14  Palmer Dabbelt  <palmer@rivosinc.com>
3974
3975         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Force auto to mutex
3976         for RISC-V.
3977         * configure: Regenerate.
3978
3979 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
3980
3981         * doc/xml/manual/intro.xml: Fix comment.
3982
3983 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
3984
3985         * include/precompiled/stdc++.h: Include <stacktrace> and
3986         <stdatomic.h> for C++23.
3987
3988 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
3989
3990         PR libstdc++/105269
3991         * include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
3992         Define.
3993         * include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
3994         Define.
3995         * include/std/optional (__cpp_lib_optional): Define new value
3996         for C++23.
3997         (__cpp_lib_monadic_optional): Remove.
3998         * include/std/version (__cpp_lib_constexpr_vector): Define.
3999         (__cpp_lib_stdatomic_h): Define.
4000         (__cpp_lib_optional): Define new value for C++23.
4001         (__cpp_lib_monadic_optional): Remove.
4002         * testsuite/20_util/optional/monadic/and_then.cc: Adjust.
4003         * testsuite/20_util/optional/requirements.cc: Adjust for C++23.
4004         * testsuite/20_util/optional/version.cc: Likewise.
4005         * testsuite/23_containers/vector/cons/constexpr.cc: Check
4006         feature test macro.
4007         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
4008         Likewise.
4009         * testsuite/20_util/optional/monadic/version.cc: Removed.
4010         * testsuite/23_containers/vector/requirements/version.cc: New test.
4011         * testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
4012
4013 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
4014
4015         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Check for mmap.
4016         * config.h.in: Regenerate.
4017         * configure: Regenerate.
4018
4019 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
4020
4021         * include/std/stacktrace (basic_stacktrace::current): Reallocate
4022         a smaller container if the unused capacity is larger than the
4023         used size.
4024
4025 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
4026
4027         * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone
4028         or _Impl::_M_assign to initialize elements in allocated storage.
4029         (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of
4030         _Impl::_M_destroy.
4031         (basic_stacktrace::_Impl::_M_destroy()): Replace with ...
4032         (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New
4033         function.
4034         (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct
4035         new element using allocator.
4036         (basic_stacktrace::_Impl::_M_clone): New function.
4037         (basic_stacktrace::_Impl::_M_xclone): New function.
4038         (basic_stacktrace::_Impl::_M_assign): New function.
4039
4040 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
4041
4042         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
4043         Use nothrow new instead of try block for std::allocator.
4044         (basic_stacktrace::_Impl::_M_deallocate): Use delete for
4045         std::allocator.
4046
4047 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
4048
4049         * include/std/stacktrace (basic_stacktrace::current): Replace
4050         calls to _M_reserve and _S_curr_cb with call to _M_prepare.
4051         Check return value of backtrace_simple when max depth given.
4052         (basic_stacktrace::_M_reserve): Remove.
4053         (basic_stacktrace::_S_curr_cb): Remove.
4054         (basic_stacktrace::_M_prepare(size_type)): New function to
4055         reserve initial capacity and return callback.
4056         (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n
4057         and remove redundant zeroing of _M_frames and _M_capacity.
4058         (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]]
4059         attribute. Assign _Impl instead of swapping.
4060         * testsuite/19_diagnostics/stacktrace/current.cc: New test.
4061
4062 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
4063
4064         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
4065         Change [[unlikely]] attribute to [[likely]].
4066
4067 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
4068
4069         PR libstdc++/105031
4070         * include/std/stacktrace (basic_stacktrace::basic_stacktrace):
4071         Fix allocator usage in constructors.
4072         (basic_stacktrace::operator=(const basic_stacktrace&)): Do not
4073         try to reallocate using const allocator.
4074         (basic_stacktrace::operator=(basic_stacktrace&&)): Fix
4075         if-constexpr with non-constant condition. Do not allocate new
4076         storage if allocator propagates. Do not set _M_size if
4077         allocation fails.
4078         (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add
4079         assertion that non-propagating allocators are equal.
4080         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
4081
4082 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
4083
4084         * include/std/stacktrace (basic_stacktrace::current): Duplicate
4085         implementation into each overload. Add noinline attribute and
4086         skip current frame.
4087         (basic_stacktrace::max_size()): Call _Impl::_S_max_size.
4088         (basic_stacktrace::_S_curr_cb()): New function defining lambda.
4089         (basic_stacktrace::_Impl::_S_max_size): New function defining
4090         maximum size in terms of allocator and size_type.
4091         (basic_stacktrace::_Impl::_M_allocate): Check against
4092         max_size().
4093         * testsuite/19_diagnostics/stacktrace/entry.cc: Call function
4094         for non-constexpr checks. Check line number is correct.
4095
4096 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
4097
4098         * testsuite/20_util/stacktrace/entry.cc: Moved to...
4099         * testsuite/19_diagnostics/stacktrace/entry.cc: ...here.
4100         * testsuite/20_util/stacktrace/synopsis.cc: Moved to...
4101         * testsuite/19_diagnostics/stacktrace/synopsis.cc: ...here.
4102         * testsuite/20_util/stacktrace/version.cc: Moved to...
4103         * testsuite/19_diagnostics/stacktrace/version.cc: ...here.
4104
4105 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
4106
4107         * include/experimental/bits/fs_path.h (path): Define special
4108         members after path::_Cmpt is complete.
4109
4110 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
4111
4112         PR libstdc++/105153
4113         * include/std/expected
4114         (expected<void,E>::expected(expected<U,G>&&)): Fix constraints.
4115         * testsuite/20_util/expected/cons.cc: Check constructor.
4116
4117 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
4118
4119         PR libstdc++/105154
4120         * include/std/expected (expected<void, E>::swap): Set
4121         _M_has_value to false for objects that previously had a value.
4122         * testsuite/20_util/expected/swap.cc: Fix test to check void
4123         specialization.
4124
4125 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
4126
4127         PR libstdc++/105146
4128         * include/std/expected (bad_expected_access): Move constructor
4129         parameter.
4130         * testsuite/20_util/expected/bad.cc: New test.
4131
4132 2022-04-07  Hans-Peter Nilsson  <hp@axis.com>
4133
4134         * testsuite/20_util/expected/requirements.cc: Correct minimal-size
4135         test.
4136
4137 2022-04-02  Jakub Jelinek  <jakub@redhat.com>
4138
4139         PR libstdc++/105128
4140         * include/std/source_location (std::source_location::__impl): Move
4141         definition before using __builtin_ret_type.
4142
4143 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
4144
4145         * include/std/utility (unreachable): Define for C++23.
4146         * include/std/version (__cpp_lib_unreachable): Define.
4147         * src/c++11/debug.cc (__glibcxx_assert_fail): Check for valid
4148         arguments. Handle only the function being given.
4149         * testsuite/20_util/unreachable/1.cc: New test.
4150         * testsuite/20_util/unreachable/version.cc: New test.
4151
4152 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
4153
4154         * include/experimental/bits/fs_fwd.h (copy_file): Remove
4155         incorrect noexcept from declaration.
4156         * include/experimental/bits/fs_path.h (path::begin, path::end):
4157         Add noexcept to declarations, to match definitions.
4158
4159 2022-04-01  Timm Bäder  <tbaeder@redhat.com>
4160
4161         * include/bits/fs_ops.h: Fix filename in Doxygen comment.
4162         * include/experimental/bits/fs_ops.h: Likewise.
4163
4164 2022-03-31  Jonathan Wakely  <jwakely@redhat.com>
4165
4166         * libsupc++/new_opa.cc (aligned_alloc): Add comment.
4167
4168 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
4169
4170         * testsuite/18_support/exception/38732.cc: Disable for C++23.
4171         * testsuite/18_support/headers/exception/synopsis.cc: Likewise.
4172         * testsuite/18_support/unexpected_handler.cc: Likewise.
4173
4174 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
4175
4176         * libsupc++/compare (_Strong_order) [!__cpp_using_enum]: Add
4177         static data members for _Fp_fmt enumerators.
4178
4179 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
4180
4181         * include/std/version (__cpp_lib_variant): Fix conditions to
4182         match <variant>.
4183         (__cpp_lib_expected): Fix condition to match <expected>.
4184
4185 2022-03-28  Jonathan Wakely  <jwakely@redhat.com>
4186
4187         * testsuite/20_util/optional/monadic/and_then.cc: Fix typo.
4188         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
4189         * testsuite/22_locale/codecvt/always_noconv/char/1.cc: Likewise.
4190         * testsuite/22_locale/codecvt/encoding/char/1.cc: Likewise.
4191         * testsuite/22_locale/codecvt/in/char/1.cc: Likewise.
4192         * testsuite/22_locale/codecvt/max_length/char/1.cc: Likewise.
4193         * testsuite/22_locale/codecvt/out/char/1.cc: Likewise.
4194         * testsuite/22_locale/codecvt/unshift/char/1.cc: Likewise.
4195
4196 2022-03-27  Jonathan Wakely  <jwakely@redhat.com>
4197
4198         * doc/doxygen/user.cfg.in: Add new header.
4199         * include/Makefile.am: Likewise.
4200         * include/Makefile.in: Regenerate.
4201         * include/precompiled/stdc++.h: Add new header.
4202         * include/std/version (__cpp_lib_expected): Define.
4203         * libsupc++/exception [__cplusplus > 202002] (unexpected)
4204         (unexpected_handler, set_unexpected): Do not declare for C++23.
4205         * include/std/expected: New file.
4206         * testsuite/20_util/expected/assign.cc: New test.
4207         * testsuite/20_util/expected/cons.cc: New test.
4208         * testsuite/20_util/expected/illformed_neg.cc: New test.
4209         * testsuite/20_util/expected/observers.cc: New test.
4210         * testsuite/20_util/expected/requirements.cc: New test.
4211         * testsuite/20_util/expected/swap.cc: New test.
4212         * testsuite/20_util/expected/synopsis.cc: New test.
4213         * testsuite/20_util/expected/unexpected.cc: New test.
4214         * testsuite/20_util/expected/version.cc: New test.
4215
4216 2022-03-25  Jonathan Wakely  <jwakely@redhat.com>
4217
4218         * include/std/bit (bit_cast, byteswap, endian): Add doxygen
4219         comments.
4220
4221 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
4222
4223         PR libstdc++/105027
4224         * include/std/bit (bit_cast): Add constraints.
4225         * testsuite/26_numerics/bit/bit.cast/105027.cc: New test.
4226
4227 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
4228
4229         * include/std/version [!_GLIBCXX_HOSTED]
4230         (__cpp_lib_hardware_interference_size): Define for freestanding.
4231         (__cpp_lib_bit_cast): Likewise.
4232         (__cpp_lib_is_layout_compatible): Likewise.
4233         (__cpp_lib_is_pointer_interconvertible): Likewise.
4234         (__cpp_lib_adaptor_iterator_pair_constructor): Do not define for
4235         freestanding.
4236         (__cpp_lib_invoke_r): Likewise.
4237         (__cpp_lib_ios_noreplace): Likewise.
4238         (__cpp_lib_monadic_optional): Likewise.
4239         (__cpp_lib_move_only_function): Likewise.
4240         (__cpp_lib_spanstream): Likewise.
4241         (__cpp_lib_stacktrace): Likewise.
4242         (__cpp_lib_string_contains): Likewise.
4243         (__cpp_lib_string_resize_and_overwrite): Likewise.
4244         (__cpp_lib_to_underlying): Likewise.
4245
4246 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
4247
4248         PR libstdc++/105021
4249         * include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
4250         <bits/atomic_wait.h> for freestanding.
4251
4252 2022-03-22  Hans-Peter Nilsson  <hp@axis.com>
4253
4254         * testsuite/20_util/from_chars/6.cc (test01) [FE_DOWNWARD]:
4255         Conditionalize call to fesetround.
4256
4257 2022-03-21  Jakub Jelinek  <jakub@redhat.com>
4258
4259         PR libstdc++/104990
4260         * include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
4261         isn't overloaded if __clang__ is defined.
4262
4263 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
4264
4265         PR libstdc++/104242
4266         * include/std/any (any(T&&)): Revert change to constraints.
4267         * testsuite/20_util/any/cons/104242.cc: New test.
4268
4269 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
4270
4271         PR libstdc++/92546
4272         * include/pstl/glue_algorithm_defs.h: Replace <functional> with
4273         <bits/stl_pair.h>.
4274         * include/pstl/utils.h: Replace <iterator> with <type_traits>.
4275         (__pstl::__internal::__except_handler): Use std::__terminate
4276         instead of std::terminate.
4277         * src/c++17/fs_path.cc: Include <array>.
4278         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Include
4279         <functional>.
4280         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
4281         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
4282         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
4283         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
4284         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
4285         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
4286         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
4287         * testsuite/25_algorithms/is_permutation/constrained.cc: Include
4288         <iterator>.
4289         * testsuite/25_algorithms/is_sorted/constexpr.cc: Include
4290         <functional>.
4291         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
4292         Likewise.
4293         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
4294         Likewise.
4295         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
4296         Likewise.
4297         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
4298         Include <array>.
4299         * testsuite/25_algorithms/lower_bound/constexpr.cc: Include
4300         <functional>.
4301         * testsuite/25_algorithms/max/constrained.cc: Likewise.
4302         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
4303         * testsuite/25_algorithms/min/constrained.cc: Likewise.
4304         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
4305         * testsuite/25_algorithms/minmax_element/constrained.cc:
4306         Likewise.
4307         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
4308         * testsuite/25_algorithms/move/93872.cc: Likewise.
4309         * testsuite/25_algorithms/move_backward/93872.cc: Include
4310         <iterator>.
4311         * testsuite/25_algorithms/nth_element/constexpr.cc: Include
4312         <functional>.
4313         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
4314         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
4315         Likewise.
4316         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
4317         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
4318         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
4319         * testsuite/25_algorithms/set_difference/constrained.cc:
4320         Likewise.
4321         * testsuite/25_algorithms/set_intersection/constexpr.cc:
4322         Likewise.
4323         * testsuite/25_algorithms/set_intersection/constrained.cc:
4324         Likewise.
4325         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
4326         Likewise.
4327         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
4328         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
4329         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
4330         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
4331         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
4332         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
4333         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
4334         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
4335         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
4336         * testsuite/std/ranges/adaptors/elements.cc: Include <vector>.
4337         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
4338         * testsuite/std/ranges/adaptors/split.cc: Likewise.
4339
4340 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
4341
4342         PR libstdc++/92546
4343         * include/bits/fs_path.h (path::make_preferred): Use
4344         handwritten loop instead of std::replace.
4345
4346 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
4347
4348         PR middle-end/104966
4349         * include/bits/locale_facets_nonio.tcc
4350         (__moneypunct_cache::_M_cache): Replace try-catch with RAII and
4351         make all string copies before any stores to *this.
4352
4353 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
4354
4355         * testsuite/util/testsuite_character.h: Fix comment.
4356
4357 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
4358
4359         PR libstdc++/103407
4360         * config/abi/pre/gnu.ver: Make version for std::from_chars
4361         depend on HAVE_USELOCALE macro.
4362         * testsuite/util/testsuite_abi.cc (compare_symbols): Treat
4363         std::from_chars for floating-point types as undesignated if
4364         not found in the baseline symbols file.
4365
4366 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
4367
4368         * include/std/charconv (__cpp_lib_to_chars): Only define when
4369         both from_chars and to_chars are supported for floating-point
4370         types.
4371         (from_chars, to_chars): Adjust preprocessor conditions guarding
4372         declarations.
4373         * include/std/version (__cpp_lib_to_chars): Adjust condition to
4374         match <charconv> definition.
4375         * src/c++17/floating_from_chars.cc (from_chars_strtod): New
4376         function template.
4377         (from_chars): Simplify preprocessor checks and use
4378         from_chars_strtod when appropriate.
4379
4380 2022-03-14  Jonathan Wakely  <jwakely@redhat.com>
4381
4382         PR libstdc++/104875
4383         * src/c++11/codecvt.cc (read_utf8_code_point): Use char32_t to
4384         hold octets that will be left-shifted.
4385
4386 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
4387
4388         PR libstdc++/104870
4389         * src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
4390         before using fast_float.
4391
4392 2022-03-10  Detlef Vollmann  <dv@vollmann.ch>
4393
4394         PR libstdc++/104866
4395         * include/bits/this_thread_sleep.h: Fix order of #endif and
4396         closing brace of namespace.
4397
4398 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
4399
4400         * libsupc++/compare (_Strong_order::_S_fp_cmp) [__vax__]:
4401         Handle NaN.
4402
4403 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
4404
4405         * libsupc++/compare (_Strong_ordering::_S_fp_cmp) [__vax__]: Use
4406         <=> comparison.
4407
4408 2022-03-09  Patrick Palka  <ppalka@redhat.com>
4409
4410         PR libstdc++/104859
4411         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
4412         Be explicit when narrowing the shifted effective_mantissa,
4413         since it may have an integer-class type.
4414
4415 2022-03-08  Jonathan Wakely  <jwakely@redhat.com>
4416
4417         * include/bits/uses_allocator_args.h: Remove incorrect copyright
4418         notice.
4419
4420 2022-03-07  Jonathan Wakely  <jwakely@redhat.com>
4421
4422         PR libstdc++/104807
4423         * include/bits/c++config (__terminate, __glibcxx_assert_fail):
4424         Replace _GLIBCXX_VISIBILITY on function with visibility pragma.
4425         (__is_constant_evaluated): Add visibility pragma.
4426
4427 2022-03-07  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
4428
4429         * config/locale/vxworks/ctype_members.cc: Remove <iostream>
4430           include.
4431
4432 2022-03-05  Jonathan Wakely  <jwakely@redhat.com>
4433
4434         * include/bits/c++config (__glibcxx_assert_fail): Add visibility
4435         attribute.
4436         (__terminate): Likewise.
4437
4438 2022-03-04  Jonathan Wakely  <jwakely@redhat.com>
4439
4440         * libsupc++/compare (strong_order::_S_fp_cmp): Move typedef
4441         inside #if condition.
4442
4443 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
4444
4445         PR libstdc++/104748
4446         * testsuite/std/ranges/adaptors/all.cc: Use non-debug vector for
4447         constexpr test.
4448
4449 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
4450
4451         * testsuite/17_intro/names.cc (func): Undef on AIX.
4452
4453 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
4454
4455         PR libstdc++/96526
4456         * libsupc++/compare (strong_order): Add missing support for
4457         floating-point types.
4458         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
4459         New test.
4460
4461 2022-03-01  Jonathan Wakely  <jwakely@redhat.com>
4462
4463         PR middle-end/103984
4464         * include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
4465         default member initializer.
4466
4467 2022-02-24  Jonathan Wakely  <jwakely@redhat.com>
4468
4469         PR libstdc++/104602
4470         * include/std/source_location (source_location::current): Use
4471         deduced type of __builtin_source_location().
4472
4473 2022-02-22  Patrick Palka  <ppalka@redhat.com>
4474
4475         * include/bits/ranges_base.h (__detail::__is_initializer_list):
4476         Define.
4477         (viewable_range): Adjust as per P2415R2.
4478         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
4479         * include/std/ranges (owning_view): Define as per P2415R2.
4480         (enable_borrowed_range<owning_view>): Likewise.
4481         (views::__detail::__can_subrange): Replace with ...
4482         (views::__detail::__can_owning_view): ... this.
4483         (views::_All::_S_noexcept): Sync with operator().
4484         (views::_All::operator()): Use owning_view instead of subrange
4485         as per P2415R2.
4486         * include/std/version (__cpp_lib_ranges): Adjust value.
4487         * testsuite/std/ranges/adaptors/all.cc (test06): Adjust now that
4488         views::all uses owning_view instead of subrange.
4489         (test08): New test.
4490         * testsuite/std/ranges/adaptors/lazy_split.cc (test09): Adjust
4491         now that rvalue non-view non-borrowed ranges are viewable.
4492         * testsuite/std/ranges/adaptors/split.cc (test06): Likewise.
4493
4494 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
4495
4496         PR libstdc++/104559
4497         * doc/xml/manual/evolution.xml: Document deprecation.
4498         * doc/html/manual/api.html: Regenerate.
4499         * include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
4500         Remove default argument.
4501         (insert(const_iterator)): New overload with deprecated attribute.
4502         * testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
4503         New test.
4504
4505 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
4506
4507         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Replace
4508         code that call cat->name() on std::error_category objects.
4509         Identify known categories by symbol name and use a hardcoded
4510         name. Print error code values as enumerators where appopriate.
4511         * testsuite/libstdc++-prettyprinters/cxx11.cc: Adjust expected
4512         name of custom category. Check io_errc and future_errc errors.
4513
4514 2022-02-15  Jonathan Wakely  <jwakely@redhat.com>
4515
4516         PR libstdc++/104542
4517         * include/bits/uses_allocator_args.h (make_obj_using_allocator)
4518         (uninitialized_construct_using_allocator): Add constexpr.
4519         * testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
4520         * testsuite/20_util/uses_allocator/uninitialized_construct.cc: New test.
4521
4522 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
4523
4524         PR libstdc++/100912
4525         * config/locale/gnu/c_locale.h (__convert_from_v): Use inline
4526         namespace for IEEE128 long double mode.
4527         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add new symbol
4528         version and export __gnu_cxx_ieee128::__convert_from_v.
4529         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
4530         Make __ibm128 overload use snprintf directly
4531         * testsuite/util/testsuite_abi.cc: Add new symbol version.
4532         Remove stable IEEE128/LDBL versions.
4533
4534 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
4535
4536         PR libstdc++/103891
4537         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
4538         Remove.
4539         * include/std/variant: Check feature test macros instead.
4540         * include/std/version: Likewise.
4541
4542 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
4543
4544         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
4545         Fix typo.
4546
4547 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
4548
4549         * src/c++17/floating_to_chars.cc (FLOAT128_TO_CHARS): Depend on
4550         LONG_DOUBLE_ALT128_COMPAT instead of USE_FLOAT128.
4551
4552 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
4553
4554         * testsuite/20_util/temporary_buffer.cc: Fix dg-warning target
4555         selector.
4556
4557 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
4558
4559         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
4560         Ignore -Walloc-larger-than warning.
4561         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
4562         Likewise.
4563         * testsuite/29_atomics/atomic/cons/user_pod.cc: Compile with -O1
4564         to avoid linker error for __atomic_is_lock_free.
4565
4566 2022-02-10  Thomas Rodgers  <rodgert@appliantology.com>
4567
4568         * include/bits/atomic_wait.h (__waiter_base::_S_do_spin,
4569         __waiter_base::_S_do_spin_v): Change memory order from relaxed
4570         to acquire.
4571
4572 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
4573
4574         * include/c_compatibility/stdatomic.h (atomic_fetch_xor): Add
4575         using-declaration.
4576         (atomic_fetch_xor_explicit): Likewise.
4577         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Check
4578         arithmetic and logical operations for atomic_int.
4579
4580 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
4581
4582         * src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
4583         when <dirent.h> is not available.
4584         (_GLIBCXX_HAVE_UNLINKAT):  Likewise.
4585
4586 2022-02-09  Thomas Rodgers  <rodgert@appliantology.com>
4587
4588         PR libstdc++/104442
4589         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): Move spin
4590          loop inside do loop so that threads failing the wait, reload
4591          _M_ver.
4592
4593 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
4594
4595         * src/c++17/fs_dir.cc (_Dir(DIR*, const path&)): Change first
4596         parameter to _Dir_base&&.
4597         * src/filesystem/dir-common.h (_Dir_base(DIR*)): Remove.
4598         * src/filesystem/dir.cc (_Dir(DIR*, const path&)): Change first
4599         parameter to _Dir_base&&.
4600
4601 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
4602
4603         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add comment about
4604         checking for CAS on correct word size.
4605
4606 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
4607
4608         * testsuite/experimental/filesystem/operations/create_directories.cc:
4609         Adjust expected results for Windows.
4610
4611 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
4612
4613         PR libstdc++/104161
4614         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::__erase):
4615         [i_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Refresh entry._M_type member,
4616         instead of checking for errno values indicating a directory.
4617         * src/c++17/fs_ops.cc (fs::remove_all(const path&)): Use similar
4618         logic to non-throwing overload.
4619         (fs::remove_all(const path&, error_code&)): Add comments.
4620         * src/filesystem/ops-common.h: Likewise.
4621
4622 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
4623
4624         * src/filesystem/dir-common.h (_Dir_base::openat): Change return
4625         type to use portable posix::DIR alias.
4626
4627 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
4628
4629         * include/c_compatibility/stdatomic.h [__clang__]: Use
4630         #include_next <stdatomic.h>.
4631
4632 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
4633
4634         * include/experimental/bits/fs_ops.h (fs::copy_file): Remove
4635         noexcept.
4636         (fs::create_directories): Likewise.
4637         (fs::remove_all): Likewise.
4638         * src/filesystem/ops.cc (fs::copy_file): Remove noexcept.
4639         (fs::create_directories): Likewise.
4640         (fs::remove_all): Likewise.
4641
4642 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
4643
4644         PR libstdc++/104161
4645         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for dirfd
4646         and unlinkat.
4647         * config.h.in: Regenerate.
4648         * configure: Regenerate.
4649         * include/bits/fs_dir.h (recursive_directory_iterator): Declare
4650         remove_all overloads as friends.
4651         (recursive_directory_iterator::__erase): Declare new member
4652         function.
4653         * include/bits/fs_fwd.h (remove, remove_all): Declare.
4654         * src/c++17/fs_dir.cc (_Dir): Add filename_only parameter to
4655         constructor. Pass file descriptor argument to base constructor.
4656         (_Dir::dir_and_pathname, _Dir::open_subdir, _Dir::do_unlink)
4657         (_Dir::unlink, _Dir::rmdir): Define new member functions.
4658         (directory_iterator): Pass filename_only argument to _Dir
4659         constructor.
4660         (recursive_directory_iterator::_Dir_stack): Adjust constructor
4661         parameters to take a _Dir rvalue instead of creating one.
4662         (_Dir_stack::orig): Add data member for storing original path.
4663         (_Dir_stack::report_error): Define new member function.
4664         (__directory_iterator_nofollow): Move here from dir-common.h and
4665         fix value to be a power of two.
4666         (__directory_iterator_filename_only): Define new constant.
4667         (recursive_directory_iterator): Construct _Dir object and move
4668         into _M_dirs stack. Pass skip_permission_denied argument to first
4669         advance call.
4670         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
4671         (recursive_directory_iterator::__erase): Define new member
4672         function.
4673         * src/c++17/fs_ops.cc (ErrorReporter, do_remove_all): Remove.
4674         (fs::remove_all): Use new recursive_directory_iterator::__erase
4675         member function.
4676         * src/filesystem/dir-common.h (_Dir_base): Add int parameter to
4677         constructor and use openat to implement nofollow semantics.
4678         (_Dir_base::fdcwd, _Dir_base::set_close_on_exec, _Dir_base::openat):
4679         Define new member functions.
4680         (__directory_iterator_nofollow): Move to fs_dir.cc.
4681         * src/filesystem/dir.cc (_Dir): Pass file descriptor argument to
4682         base constructor.
4683         (_Dir::dir_and_pathname, _Dir::open_subdir): Define new member
4684         functions.
4685         (recursive_directory_iterator::_Dir_stack): Adjust constructor
4686         parameters to take a _Dir rvalue instead of creating one.
4687         (recursive_directory_iterator): Check for new nofollow option.
4688         Construct _Dir object and move into _M_dirs stack. Pass
4689         skip_permission_denied argument to first advance call.
4690         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
4691         * src/filesystem/ops.cc (fs::remove_all): Use C++17 remove_all.
4692
4693 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
4694
4695         * include/bits/allocator.h: Qualify std::allocator_traits in
4696         deprecated warnings.
4697         * libsupc++/exception (uncaught_exception): Add suggestion to
4698         deprecated warning.
4699
4700 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
4701
4702         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::pop):
4703         Add [[maybe_unused]] attribute.
4704         * src/filesystem/dir.cc (fs::recursive_directory_iterator::pop):
4705         Likewise.
4706
4707 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
4708
4709         * testsuite/23_containers/multiset/operators/cmp_c++20.cc: Use
4710         custom comparison function for multiset.
4711         * testsuite/23_containers/set/operators/cmp_c++20.cc: Use custom
4712         comparison function for set.
4713
4714 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
4715
4716         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
4717         Change member function to data member of function pointer type.
4718
4719 2022-02-02  Martin Sebor  <msebor@redhat.com>
4720
4721         PR libstdc++/101831
4722         * include/std/array (begin): Declare const member function attribute
4723         const.
4724         (end, rbegin, rend, size, max_size, empty, data): Same.
4725         * testsuite/23_containers/array/capacity/empty.cc: Add test cases.
4726         * testsuite/23_containers/array/capacity/max_size.cc: Same.
4727         * testsuite/23_containers/array/capacity/size.cc: Same.
4728         * testsuite/23_containers/array/iterators/begin_end.cc: New test.
4729
4730 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
4731
4732         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
4733         autoconf macro to check whether d_type is present.
4734         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
4735         Likewise.
4736
4737 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
4738
4739         * testsuite/27_io/filesystem/iterators/97731.cc: New test.
4740         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
4741         Check follow_directory_symlink option.
4742         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
4743         Likewise.
4744
4745 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
4746
4747         * src/c++17/fs_dir.cc (recursive_directory_iterator::increment):
4748         Reset state to past-the-end iterator on error.
4749         (fs::recursive_directory_iterator::pop(error_code&)): Likewise.
4750         (fs::recursive_directory_iterator::pop()): Check _M_dirs before
4751         it might get reset.
4752         * src/filesystem/dir.cc (recursive_directory_iterator): Likewise,
4753         for the TS implementation.
4754         * testsuite/27_io/filesystem/iterators/error_reporting.cc: New test.
4755         * testsuite/experimental/filesystem/iterators/error_reporting.cc: New test.
4756
4757 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
4758
4759         * include/bits/fs_fwd.h (filesystem::perms): Fix comment.
4760
4761 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
4762
4763         PR libstdc++/104301
4764         * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
4765         for stdio_pure and stdio_posix options.
4766         * configure: Regenerate.
4767
4768 2022-02-01  Thomas Rodgers  <rodgert@appliantology.com>
4769
4770         * include/bits/atomic_wait.h: Change memory order from
4771         Acquire/Release with relaxed loads to SeqCst+Release for
4772         accesses to the waiter's count.
4773
4774 2022-01-31  Martin Liska  <mliska@suse.cz>
4775
4776         * acinclude.m4: Detect *_ld_is_mold and use it.
4777         * configure: Regenerate.
4778
4779 2022-01-30  Hans-Peter Nilsson  <hp@axis.com>
4780
4781         * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Don't run on
4782         simulator targets.
4783         * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: Likewise.
4784
4785 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
4786
4787         PR libstdc++/100516
4788         * include/bits/deque.tcc (_M_range_initialize<ForwardIterator>):
4789         Add __builtin_unreachable to loop.
4790         * testsuite/23_containers/deque/100516.cc: New test.
4791
4792 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
4793
4794         * include/bits/ranges_base.h (ranges::advance): Avoid signed
4795         overflow. Do nothing if already equal to desired result.
4796         * testsuite/24_iterators/range_operations/advance_overflow.cc:
4797         New test.
4798
4799 2022-01-27  Martin Liska  <mliska@suse.cz>
4800
4801         PR libstdc++/104259
4802         * acinclude.m4: Fix typo.
4803         * configure: Regenerate.
4804
4805 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
4806
4807         PR libstdc++/104019
4808         * include/bits/istream.tcc (basic_istream::sentry): Add braces
4809         around try-block.
4810         * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
4811         Add pragmas to disable bogus warnings from PR 61596.
4812
4813 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
4814
4815         PR libstdc++/104217
4816         * src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
4817         * src/filesystem/dir.cc (_GNU_SOURCE): Define.
4818         * src/filesystem/ops.cc (_GNU_SOURCE): Define.
4819
4820 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
4821
4822         PR libstdc++/104161
4823         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
4824         fdopendir.
4825         * config.h.in: Regenerate.
4826         * configure: Regenerate.
4827         * src/c++17/fs_dir.cc (_Dir): Add nofollow flag to constructor
4828         and pass it to base class constructor.
4829         (directory_iterator): Pass nofollow flag to _Dir constructor.
4830         (fs::recursive_directory_iterator::increment): Likewise.
4831         * src/c++17/fs_ops.cc (do_remove_all): Use nofollow option for
4832         directory_iterator constructor. Move error check outside loop.
4833         * src/filesystem/dir-common.h (_Dir_base): Add nofollow flag to
4834         constructor and when it's set use ::open with O_NOFOLLOW and
4835         O_DIRECTORY.
4836         * src/filesystem/dir.cc (_Dir): Add nofollow flag to constructor
4837         and pass it to base class constructor.
4838         (directory_iterator): Pass nofollow flag to _Dir constructor.
4839         (fs::recursive_directory_iterator::increment): Likewise.
4840         * src/filesystem/ops.cc (remove_all): Use nofollow option for
4841         directory_iterator constructor. Move error check outside loop.
4842
4843 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
4844
4845         PR libstdc++/104032
4846         * include/std/spanstream (basic_spanbuf(basic_spanbuf&&)): Use
4847         mem-initializer for _M_buf.
4848         (basic_spanbuf::Operator=(basic_spanbuf&&)): Fix ill-formed
4849         member access.
4850         * testsuite/27_io/spanstream/2.cc: New test.
4851
4852 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
4853
4854         * src/c++17/floating_from_chars.cc (USE_STRTOD_FOR_FROM_CHARS):
4855         Define macro for case where std::from_chars is implemented in
4856         terms of strtod, strtof or strtold.
4857         (buffer_resource, valid_fmt, find_end_of_float, pattern)
4858         (from_chars_impl, make_result, reserve_string): Do not define
4859         unless USE_STRTOD_FOR_FROM_CHARS is defined.
4860         (from_chars): Define when at least one of USE_LIB_FAST_FLOAT and
4861         USE_STRTOD_FOR_FROM_CHARS is defined, instead of
4862         _GLIBCXX_HAVE_USELOCALE. Use fast_float for long double when it
4863         is binary64.
4864
4865 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
4866
4867         PR libstdc++/104174
4868         * include/bits/hashtable_policy.h (_Map_base): Add partial
4869         specialization for maps with const key types.
4870         * testsuite/23_containers/unordered_map/104174.cc: New test.
4871
4872 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
4873
4874         PR libstdc++/104019
4875         * include/bits/shared_ptr_base.h (_Sp_counted_base<>::_M_release):
4876         Set members to zero without type punning.
4877
4878 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
4879
4880         * testsuite/20_util/shared_ptr/cons/array.cc: Fix comment.
4881
4882 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
4883
4884         PR libstdc++/87193
4885         PR libstdc++/104019
4886         * include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
4887         Define as type long.
4888         * include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
4889         Likewise.
4890         * include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
4891         * include/bits/chrono.h (__cpp_lib_chrono): Likewise.
4892         (__cpp_lib_chrono_udls): Likewise.
4893         * include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
4894         * include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
4895         * include/bits/range_access.h (__cpp_lib_nonmember_container_access):
4896         Likewise.
4897         * include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
4898         Likewise.
4899         * include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
4900         (__cpp_lib_sample): Likewise.
4901         * include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
4902         Likewise.
4903         * include/bits/stl_function.h (__cpp_lib_transparent_operators):
4904         Likewise.
4905         * include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
4906         Likewise.
4907         * include/bits/stl_map.h (__cpp_lib_map_try_emplace):
4908         Likewise.
4909         * include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
4910         Likewise.
4911         * include/bits/unique_ptr.h (__cpp_lib_make_unique):
4912         Likewise.
4913         * include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
4914         Likewise.
4915         * include/c_global/cmath (__cpp_lib_hypot): Likewise.
4916         * include/c_global/cstddef (__cpp_lib_byte): Likewise.
4917         * include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
4918         Likewise.
4919         * include/std/complex (__cpp_lib_complex_udls): Likewise.
4920         * include/std/filesystem (__cpp_lib_filesystem): Likewise.
4921         * include/std/functional (__cpp_lib_not_fn): Likewise.
4922         (__cpp_lib_boyer_moore_searcher): Likewise.
4923         * include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
4924         * include/std/mutex (__cpp_lib_scoped_lock): Likewise.
4925         * include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
4926         (__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
4927         * include/std/tuple (__cpp_lib_apply): Likewise.
4928         (__cpp_lib_make_from_tuple): Likewise.
4929         * include/std/type_traits (__cpp_lib_integral_constant_callable)
4930         (__cpp_lib_bool_constant, __cpp_lib_logical_traits)
4931         (__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
4932         (__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
4933         (__cpp_lib_is_swappable, __cpp_lib_is_invocable)
4934         (__cpp_lib_has_unique_object_representations)
4935         (__cpp_lib_is_aggregate): Likewise.
4936         * include/std/version: Likewise.
4937         * libsupc++/new (__cpp_lib_launder): Likewise.
4938
4939 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
4940
4941         * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
4942         condition for C++17 definition.
4943
4944 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
4945
4946         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count):
4947         Add constexpr.
4948         (_Sp_atomic::_M_ptr): Add default member-initializer.
4949         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
4950         Check constant initialization.
4951         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
4952
4953 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
4954
4955         * src/c++11/cxx11-ios_failure.cc (__constinit): Define as
4956         equivalent attribute for Clang.
4957         * src/c++11/future.cc (__constinit): Likewise.
4958         * src/c++11/system_error.cc (__constinit): Likewise.
4959         * src/c++17/memory_resource.cc (__constinit): Likewise.
4960
4961 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
4962
4963         * scripts/testsuite_flags.in: Only add src/filesystem/.libs and
4964         src/libbacktrace/.libs to LDFLAGS if those directories exist.
4965
4966 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
4967
4968         * configure.ac (GLIBCXX_ENABLE_DEBUG_FLAGS): Remove -gdwarf-4
4969         from default flags.
4970         * configure: Regenerate.
4971
4972 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
4973
4974         PR libstdc++/104123
4975         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Include
4976         <stddef.h>.
4977
4978 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
4979
4980         * scripts/testsuite_flags.in: Add src/libbacktrace/.libs to
4981         linker search paths.
4982         * src/Makefile.am: Fix src/debug/libbacktrace build.
4983         * src/Makefile.in: Regenerate.
4984         * src/libbacktrace/Makefile.am: Use per-library CPPFLAGS
4985         variable. Use symlinks for the source files.
4986         * src/libbacktrace/Makefile.in: Regenerate.
4987
4988 2022-01-19  Matthias Kretz  <m.kretz@gsi.de>
4989
4990         * include/experimental/bits/simd.h (__floating_point_flags): Do
4991         not rely on math_errhandling to expand to a constant expression.
4992
4993 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
4994
4995         * doc/xml/manual/evolution.xml: Document deprecations.
4996         * doc/xml/manual/status_cxx2017.xml: Update status.
4997         * doc/html/*: Regenerate.
4998
4999 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
5000
5001         * include/bits/stl_tempbuf.h (get_temporary_buffer): Change
5002         _GLIBCXX14_DEPRECATED to _GLIBCXX17_DEPRECATED.
5003
5004 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
5005
5006         * include/bits/stl_pair.h (_PCC::_DeprConsPair): Remove unused
5007         function.
5008
5009 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
5010
5011         PR libstdc++/104101
5012         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count::lock):
5013         Only use __thread_relax if __cpp_lib_atomic_wait is defined.
5014
5015 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5016
5017         PR libstdc++/104099
5018         * include/bits/basic_string.h (basic_string(nullptr_t)): Only
5019         define for C++23.
5020         (operator=(nullptr_t)): Likewise.
5021         * include/bits/cow_string.h: Likewise.
5022         * include/std/string_view (basic_string_view(nullptr_t)):
5023         Likewise.
5024         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: Adjust
5025         expected error. Add examples that become ill-formed in C++23.
5026         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
5027         Adjust expected errors.
5028         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
5029         Likewise.
5030
5031 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5032
5033         PR libstdc++/104098
5034         * include/bits/stl_iterator.h (reverse_iterator): Check
5035         __cpp_lib_concepts instead of __cplusplus.
5036
5037 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5038
5039         PR libstdc++/101124
5040         * include/bits/stl_pair.h (pair): Adjust constraints on
5041         deprecated constructors accepting literal zero as null pointer
5042         constant. Improve wording of deprecated attribute.
5043         * testsuite/20_util/pair/cons/99957.cc: Check that deprecated
5044         constructors do not cause ambiguities for copyable types.
5045
5046 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5047
5048         * include/bits/stl_function.h (ptr_fun): Fix suggestion for
5049         non-deprecated alternative.
5050
5051 2022-01-18  Tom Honermann  <tom@honermann.net>
5052
5053         * acinclude.m4: Define config macros if uchar.h provides
5054         c8rtomb() and mbrtoc8().
5055         * config.h.in: Regenerate.
5056         * configure: Regenerate.
5057         * include/c_compatibility/uchar.h (c8rtomb, mbrtoc8): Define.
5058         * include/c_global/cuchar (c8rtomb, mbrtoc8): Likewise.
5059         * include/c_std/cuchar (c8rtomb, mbrtoc8): Likewise.
5060         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
5061         New test.
5062         * testsuite/21_strings/headers/cuchar/functions_std_fchar8_t.cc:
5063         New test.
5064
5065 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5066
5067         * include/Makefile.am: Install new header.
5068         * include/Makefile.in: Regenerate.
5069         * include/c_compatibility/stdatomic.h: New file.
5070         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: New test.
5071
5072 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5073
5074         PR libstdc++/104080
5075         * src/c++17/fast_float/LOCAL_PATCHES: Update.
5076         * src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
5077         Define in terms of __BYTE_ORDER__.
5078
5079 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5080
5081         PR libstdc++/104080
5082         * src/c++17/fast_float/LOCAL_PATCHES: UPDATE.
5083         * src/c++17/fast_float/fast_float.h (round): Use explicit
5084         template argument list for std::min.
5085
5086 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5087
5088         * doc/xml/manual/status_cxx2017.xml: Update C++17 status.
5089         * doc/xml/manual/status_cxx2020.xml: Use 12.1 instead of 12 for
5090         upcoming release.
5091         * doc/html/manual/status.html: Regenerate.
5092
5093 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
5094
5095         * acinclude.m4 (GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING): Improve
5096         comments.
5097         * configure: Regenerate.
5098
5099 2022-01-17  Patrick Palka  <ppalka@redhat.com>
5100
5101         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
5102         Conditionally define, and use it to conditionally include
5103         fast_float.
5104         (from_chars): Use fast_float for float and double when
5105         USE_LIB_FAST_FLOAT.
5106
5107 2022-01-17  Patrick Palka  <ppalka@redhat.com>
5108
5109         * src/c++17/fast_float/LOCAL_PATCHES: Update.
5110         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
5111         case of over/underflow, return errc::result_out_of_range and don't
5112         modify 'value'.
5113
5114 2022-01-17  Patrick Palka  <ppalka@redhat.com>
5115
5116         * src/c++17/fast_float/LOCAL_PATCHES: Update.
5117         * src/c++17/fast_float/fast_float.h: Apply local modifications.
5118
5119 2022-01-17  Patrick Palka  <ppalka@redhat.com>
5120
5121         * src/c++17/fast_float/LOCAL_PATCHES: New file.
5122         * src/c++17/fast_float/MERGE: New file.
5123         * src/c++17/fast_float/README.md: New file, copied from the
5124         fast_float repository.
5125         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
5126         of the fast_float library.
5127
5128 2022-01-17  Patrick Palka  <ppalka@redhat.com>
5129
5130         * src/c++17/floating_from_chars.cc: Include <bit>.
5131         (ascii_to_hexit, starts_with_ci): Conditionally define.
5132         (__floating_from_chars_hex):  Conditionally define.
5133         (from_chars): Use __floating_from_chars_hex for
5134         chars_format::hex parsing of binary32/64 float/double.
5135         (testsuite/20_util/from_chars/7.cc): New test.
5136         * testsuite/20_util/from_chars/7.cc: New file.
5137
5138 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5139
5140         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
5141         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
5142         * include/Makefile.am: Add new header.
5143         * include/Makefile.in: Regenerate.
5144         * include/std/stacktrace: New header.
5145         * include/std/version (__cpp_lib_stacktrace): Define.
5146         * Makefile.in: Regenerate.
5147         * config.h.in: Regenerate.
5148         * configure: Regenerate.
5149         * doc/Makefile.in: Regenerate.
5150         * libsupc++/Makefile.in: Regenerate.
5151         * po/Makefile.in: Regenerate.
5152         * python/Makefile.in: Regenerate.
5153         * src/Makefile.am: Regenerate.
5154         * src/Makefile.in: Regenerate.
5155         * src/c++11/Makefile.in: Regenerate.
5156         * src/c++17/Makefile.in: Regenerate.
5157         * src/c++20/Makefile.in: Regenerate.
5158         * src/c++98/Makefile.in: Regenerate.
5159         * src/filesystem/Makefile.in: Regenerate.
5160         * testsuite/Makefile.in: Regenerate.
5161         * src/libbacktrace/Makefile.am: New file.
5162         * src/libbacktrace/Makefile.in: New file.
5163         * src/libbacktrace/backtrace-rename.h: New file.
5164         * src/libbacktrace/backtrace-supported.h.in: New file.
5165         * src/libbacktrace/config.h.in: New file.
5166         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
5167         New proc.
5168         * testsuite/20_util/stacktrace/entry.cc: New test.
5169         * testsuite/20_util/stacktrace/synopsis.cc: New test.
5170         * testsuite/20_util/stacktrace/version.cc: New test.
5171
5172 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5173
5174         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
5175         names.
5176         * doc/html/manual/status.html: Regenerate.
5177
5178 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5179
5180         PR libstdc++/103650
5181         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
5182         * include/Makefile.in: Regenerate.
5183         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
5184
5185 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
5186
5187         * include/experimental/bits/simd.h (__floating_point_flags): Do
5188         not rely on the presence of the math_errhandling macro.
5189
5190 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5191
5192         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
5193         to qualified-id for dependent type.
5194
5195 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5196
5197         * doc/xml/manual/status_cxx2020.xml: Update.
5198         * doc/html/manual/status.html: Regenerate.
5199
5200 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
5201             Thomas Rodgers  <trodgers@redhat.com>
5202
5203         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
5204         New macro.
5205         (_Sp_atomic): New class template.
5206         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
5207         specializations.
5208         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
5209         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
5210         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
5211         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
5212         test.
5213         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
5214
5215 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
5216
5217         * include/experimental/bits/simd.h: Move feature detection bools
5218         and add __have_avx512bitalg, __have_avx512vbmi2,
5219         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
5220         __have_avx512vnni, __have_avx512vpopcntdq.
5221         (__detail::__machine_flags): New function which returns a unique
5222         uint64 depending on relevant -m and -f flags.
5223         (__detail::__odr_helper): New type alias for either an anonymous
5224         type or a type specialized with the __machine_flags number.
5225         (_SimdIntOperators): Change template parameters from _Impl to
5226         _Tp, _Abi because _Impl now has an __odr_helper parameter which
5227         may be _OdrEnforcer from the anonymous namespace, which makes
5228         for a bad base class.
5229         (many): Either add __odr_helper template parameter or mark as
5230         always_inline.
5231         * include/experimental/bits/simd_detail.h: Add defines for
5232         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
5233         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
5234         * include/experimental/bits/simd_builtin.h: Add __odr_helper
5235         template parameter or mark as always_inline.
5236         * include/experimental/bits/simd_fixed_size.h: Ditto.
5237         * include/experimental/bits/simd_math.h: Ditto.
5238         * include/experimental/bits/simd_scalar.h: Ditto.
5239         * include/experimental/bits/simd_neon.h: Add __odr_helper
5240         template parameter.
5241         * include/experimental/bits/simd_ppc.h: Ditto.
5242         * include/experimental/bits/simd_x86.h: Ditto.
5243
5244 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
5245
5246         * testsuite/22_locale/numpunct/members/char/3.cc:
5247         Require pt_PT locale instead of nl_NL.
5248         (test02): Use pt_PT locale instead of nl_NL.
5249
5250 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
5251
5252         PR libstdc++/91260
5253         PR libstdc++/91383
5254         PR libstdc++/95065
5255         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
5256         attribute.
5257         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
5258         Disable deprecated warnings for base classes.
5259         (_Reference_wrapper_base): Likewise.
5260         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
5261         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
5262         * include/bits/stl_function.h (unary_function, binary_function):
5263         Add deprecated attribute.
5264         (unary_negate, not1, binary_negate, not2, ptr_fun)
5265         (pointer_to_unary_function, pointer_to_binary_function)
5266         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
5267         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
5268         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
5269         attributes.
5270         * include/bits/stl_iterator.h: Disable deprecated warnings for
5271         std::iterator base classes.
5272         * include/bits/stl_iterator_base_types.h (iterator): Add
5273         deprecated attribute.
5274         * include/bits/stl_map.h (map::value_compare): Disable
5275         deprecated warnings for base class.
5276         * include/bits/stl_multimap.h (multimap::value_compare):
5277         Likewise.
5278         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
5279         Add deprecated attribute.
5280         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
5281         * include/bits/stream_iterator.h: Disable deprecated warnings.
5282         * include/bits/streambuf_iterator.h: Likewise.
5283         * include/ext/bitmap_allocator.h: Remove unary_function base
5284         classes.
5285         * include/ext/functional: Disable deprecated warnings.
5286         * include/ext/rope: Likewise.
5287         * include/ext/throw_allocator.h: Likewise.
5288         * include/std/type_traits (result_of): Add deprecated attribute.
5289         * include/tr1/functional: Disable deprecated warnings.
5290         * include/tr1/functional_hash.h: Likewise.
5291         * testsuite/20_util/function_objects/binders/1.cc: Add
5292         -Wno-disable-deprecations.
5293         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
5294         * testsuite/20_util/function_objects/constexpr.cc: Add
5295         dg-warning.
5296         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
5297         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
5298         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
5299         Likewise.
5300         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
5301         Likewise.
5302         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
5303         Likewise.
5304         * testsuite/20_util/reference_wrapper/24803.cc:
5305         Likewise.
5306         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
5307         C++20 and check for absence of nested types.
5308         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
5309         std::binary_function base class.
5310         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
5311         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
5312         std::iterator base class.
5313         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
5314         Likewise.
5315         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
5316         Likewise.
5317         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
5318         Likewise.
5319         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
5320         Likewise.
5321         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
5322         Likewise.
5323         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
5324         Likewise.
5325         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
5326         Likewise.
5327         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
5328         Likewise.
5329         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
5330         Likewise.
5331         * testsuite/25_algorithms/copy/34595.cc:
5332         Likewise.
5333         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
5334         base class.
5335         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
5336         Disable deprecated warnings.
5337         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
5338         Likewise.
5339         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
5340         Likewise.
5341         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
5342         Likewise.
5343         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
5344         Likewise.
5345         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
5346         Likewise.
5347         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
5348         Likewise.
5349         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
5350         Likewise.
5351         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
5352         Likewise.
5353         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
5354         Likewise.
5355         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
5356         Likewise.
5357         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
5358         Likewise.
5359         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
5360         Likewise.
5361         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
5362         Likewise.
5363         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
5364         Likewise.
5365         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
5366         Likewise.
5367         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
5368         Likewise.
5369         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
5370         Likewise.
5371         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
5372         Likewise.
5373         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
5374         Likewise.
5375         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
5376         Likewise.
5377         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
5378         Likewise.
5379         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
5380         Likewise.
5381         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
5382         Likewise.
5383         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
5384         Likewise.
5385         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
5386         Likewise.
5387         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
5388         Likewise.
5389         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
5390         Likewise.
5391         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
5392         Likewise.
5393         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
5394         Likewise.
5395         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
5396         Likewise.
5397         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
5398         Likewise.
5399         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
5400         Likewise.
5401         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
5402         Likewise.
5403         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
5404         Likewise.
5405         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
5406         Likewise.
5407         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
5408         Likewise.
5409         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
5410         Likewise.
5411         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
5412         Likewise.
5413         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
5414         Likewise.
5415         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
5416         Likewise.
5417         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
5418         Likewise.
5419         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
5420         Likewise.
5421         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
5422         Likewise.
5423         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
5424         Likewise.
5425         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
5426         Likewise.
5427         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
5428         Likewise.
5429         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
5430         Likewise.
5431         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
5432         dg-warning.
5433         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
5434         Likewise.
5435         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
5436         Likewise.
5437         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
5438         Disable deprecated warnings.
5439         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
5440         Likewise.
5441         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
5442         std::unary_function base classes.
5443         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
5444         Remove std::iterator base classes.
5445
5446 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
5447
5448         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
5449         Correct type of macro value.
5450         (shared_ptr): Add additional friend declarations.
5451         (make_shared, allocate_shared): Constrain existing overloads and
5452         remove static_assert.
5453         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
5454         New macro.
5455         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
5456         specialization for use with make_shared_for_overwrite.
5457         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
5458         (_Sp_counted_array_base): New class template.
5459         (_Sp_counted_array): New class template.
5460         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
5461         New constructor for allocating shared arrays.
5462         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
5463         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
5464         type.
5465         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
5466         (__cpp_lib_smart_ptr_for_overwrite): New macro.
5467         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
5468         expected errors.
5469         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
5470         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
5471         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
5472         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
5473         feature test macro. Test non-trivial default-initialization.
5474
5475 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
5476
5477         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
5478         Also cast away cv-qualifiers when converting pointer to void.
5479         * testsuite/20_util/allocator/void.cc: Test construct function
5480         with cv-qualified types.
5481
5482 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
5483
5484         PR libstdc++/103992
5485         * include/bits/stl_iterator.h (common_iterator): Use
5486         std::construct_at instead of placement new.
5487         * testsuite/24_iterators/common_iterator/1.cc: Check copy
5488         construction is usable in constant expressions.
5489
5490 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
5491
5492         * doc/xml/manual/status_cxx2011.xml: Document new tokens
5493         accepted by std::random_device constructor.
5494         * doc/html/manual/status.html: Regenerate.
5495
5496 2022-01-12  Patrick Palka  <ppalka@redhat.com>
5497
5498         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
5499         directive.
5500
5501 2022-01-12  Patrick Palka  <ppalka@redhat.com>
5502
5503         PR libstdc++/103955
5504         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
5505         Track the excess precision separately from the effective
5506         precision.  Avoid overflow in bounds check by splitting it into
5507         two checks.
5508         (__floating_to_chars_precision): Avoid overflow in bounds checks
5509         similarly.
5510         * testsuite/20_util/to_chars/103955.cc: New test.
5511
5512 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5513
5514         PR libstdc++/103726
5515         * include/Makefile.am: Install <source_location> for
5516         freestanding.
5517         * include/Makefile.in: Regenerate.
5518         * include/std/version (__cpp_lib_source_location): Define for
5519         freestanding.
5520
5521 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5522
5523         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
5524         Add neoxcept (LWG 3593).
5525
5526 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5527
5528         * include/std/ranges (ranges::__detail::__box): Add constexpr to
5529         assignment operators (LWG 3572).
5530         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
5531         view that uses copyable-box.
5532
5533 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5534
5535         PR libstdc++/103726
5536         * include/Makefile.am: Install <coroutine> for freestanding.
5537         * include/Makefile.in: Regenerate.
5538         * include/std/coroutine: Adjust headers and preprocessor
5539         conditions.
5540         (__coroutine_traits_impl): Use concepts when available.
5541         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
5542
5543 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5544
5545         * include/std/ostream (operator<<(basic_ostream&, charT)):
5546         Use unformatted input if no padding is needed.
5547         (operator<<(basic_ostream<char>&, char)): Likewise.
5548
5549 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5550
5551         PR libstdc++/103891
5552         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
5553         Define.
5554         * include/std/variant (__cpp_lib_variant): Only define C++20
5555         value when the compiler is known to support conditionally
5556         trivial destructors.
5557         * include/std/version (__cpp_lib_variant): Likewise.
5558
5559 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
5560
5561         * include/bits/stl_iterator.h (common_iterator): Add constexpr
5562         to all member functions (LWG 3574).
5563         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
5564         tests as constant expressions.
5565         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
5566
5567 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
5568
5569         PR libstdc++/77760
5570         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
5571         (time_get::_M_extract_via_format): Declare new method with
5572         __time_get_state& as an extra argument.
5573         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
5574         __state argument, set various fields in it while parsing.  Handle %j,
5575         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
5576         for %p immediately.  Add a wrapper around the method without the
5577         __state argument for backwards compatibility.
5578         (_M_extract_num): Remove all __len == 4 special cases.
5579         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
5580         initialize __state, pass it to _M_extract_via_format and finalize it
5581         at the end.
5582         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
5583         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
5584         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
5585         version, don't call do_get but call _M_extract_via_format instead to
5586         pass around state.
5587         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
5588         with extra __time_get_state and __time_get_state::_M_finalize_state.
5589         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
5590         day_of_the_year): New functions in anon namespace.
5591         (mon_yday): New var in anon namespace.
5592         (__time_get_state::_M_finalize_state): Define.
5593         * testsuite/22_locale/time_get/get/char/4.cc: New test.
5594         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
5595         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
5596         as year 197AD instead of error.
5597         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
5598         year 2001 instead of error.
5599         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
5600         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
5601         197 as year 197AD instead of error.
5602         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
5603         1 as year 2001 instead of error.
5604         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
5605
5606 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
5607
5608         PR libstdc++/103866
5609         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
5610         nothing for freestanding builds.
5611         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
5612         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
5613         with --without-headers.  Do not use GCC_HEADER_STDINT for
5614         freestanding builds.
5615         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
5616         for freestanding builds.
5617         * configure: Regenerate.
5618         * Makefile.in: Regenerate.
5619         * doc/Makefile.in: Regenerate.
5620         * include/Makefile.in: Regenerate.
5621         * libsupc++/Makefile.in: Regenerate.
5622         * po/Makefile.in: Regenerate.
5623         * python/Makefile.in: Regenerate.
5624         * src/Makefile.in: Regenerate.
5625         * src/c++11/Makefile.in: Regenerate.
5626         * src/c++17/Makefile.in: Regenerate.
5627         * src/c++20/Makefile.in: Regenerate.
5628         * src/c++98/Makefile.in: Regenerate.
5629         * src/filesystem/Makefile.in: Regenerate.
5630         * testsuite/Makefile.in: Regenerate.
5631
5632 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
5633
5634         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
5635         Add dg-timeout-factor directive.
5636         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
5637         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
5638         * testsuite/28_regex/match_results/102667.cc: Likewise.
5639
5640 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
5641
5642         * doc/xml/manual/using.xml: Update documentation around default
5643         -std option.
5644         * doc/html/*: Regenerate.
5645
5646 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
5647
5648         PR libstdc++/100017
5649         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
5650         * src/c++17/Makefile.in: Regenerate.
5651
5652 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
5653
5654         * testsuite/18_support/type_info/constexpr.cc: Add explicit
5655         -fdelete-null-pointer-checks option.
5656
5657 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
5658             Jonathan Wakely  <jwakely@redhat.com>
5659
5660         PR libstdc++/103853
5661         * include/bits/forward_list.tcc (forward_list::merge): Check for
5662         self-merge.
5663         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
5664
5665 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
5666
5667         * include/bits/regex.h (basic_regex, match_results): Qualify
5668         name in friend declaration, to work around Clang bug.
5669
5670 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
5671
5672         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
5673
5674 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
5675
5676         PR libstdc++/103911
5677         * include/std/charconv (__from_chars_alpha_to_num): Return
5678         char instead of unsigned char. Change invalid return value to
5679         127 instead of using numeric trait.
5680         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
5681         Change type of variable to char.
5682
5683 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
5684
5685         PR libstdc++/68303
5686         * include/bits/hashtable_policy.h
5687         (_Hashtable_hash_traits<_Hash>): New.
5688         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
5689         (_Hashtable_base<>::_M_key_equals): New.
5690         (_Hashtable_base<>::_M_equals): Use latter.
5691         (_Hashtable_base<>::_M_key_equals_tr): New.
5692         (_Hashtable_base<>::_M_equals_tr): Use latter.
5693         * include/bits/hashtable.h
5694         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
5695         (_Hashtable<>::find): Loop through elements to look for key if size is lower
5696         than __small_size_threshold().
5697         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
5698         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
5699         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
5700         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
5701         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
5702         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
5703         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
5704         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
5705         * testsuite/util/testsuite_performance.h
5706         (report_performance): Use 9 width to display memory.
5707         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
5708         New performance test case.
5709
5710 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5711
5712         PR libstdc++/103919
5713         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
5714         Relax constraints on string_view parameter.
5715         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
5716         Likewise.
5717         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
5718
5719 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5720
5721         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
5722         ARM EABI.
5723         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
5724         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
5725         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
5726         is emitted.
5727         (type_info::__equal): Define alias symbol.
5728         * libsupc++/typeinfo (type_info::before): Combine different
5729         implementations into one.
5730         (type_info::operator==): Likewise. Use address equality for
5731         constant evaluation. Call __equal for targets that require the
5732         definition to be non-inline.
5733         * testsuite/18_support/type_info/constexpr.cc: New test.
5734
5735 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5736
5737         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
5738         class and virtual functions as 'final'.
5739         (io_category_instance): Use constinit union to make the object
5740         immortal.
5741         * src/c++11/future.cc (future_error_category): Define class and
5742         virtual functions as 'final'.
5743         (future_category_instance): Use constinit union.
5744
5745 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5746
5747         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
5748         versioned namespace from the type name that is printed.
5749
5750 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5751
5752         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
5753         printer for std::regex NFA states.
5754
5755 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5756
5757         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
5758         placeholders in comments.
5759         * testsuite/23_containers/forward_list/operations/2.cc:
5760         Likewise.
5761         * testsuite/23_containers/forward_list/operations/3.cc:
5762         Likewise.
5763         * testsuite/23_containers/forward_list/operations/4.cc:
5764         Likewise.
5765         * testsuite/23_containers/forward_list/operations/5.cc:
5766         Likewise.
5767         * testsuite/23_containers/forward_list/operations/6.cc:
5768         Likewise.
5769         * testsuite/23_containers/forward_list/operations/7.cc:
5770         Likewise.
5771
5772 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5773
5774         PR libstdc++/103848
5775         * include/bits/stl_deque.h (operator-): Do not use 0 as null
5776         pointer constant.
5777
5778 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5779
5780         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
5781         Use std::_Construct for construct.
5782
5783 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5784
5785         PR libstdc++/103877
5786         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
5787         * doc/html/faq.html: Regenerate.
5788
5789 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5790
5791         * include/bits/regex.h (__regex_algo_impl): Change __policy and
5792         __match_mode template parameters to be function parameters.
5793         (regex_match, regex_search): Pass policy and match mode as
5794         function arguments.
5795         * include/bits/regex.tcc (__regex_algo_impl): Change template
5796         parameters to function parameters.
5797         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
5798         'if constexpr' for conditions using template parameters.
5799         (_RegexTranslator): Likewise.
5800         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
5801         Likewise.
5802         * testsuite/util/testsuite_regex.h (regex_match_debug)
5803         (regex_search_debug): Move template arguments to function
5804         arguments.
5805
5806 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5807
5808         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
5809         results even if the match failed.
5810
5811 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
5812
5813         * include/bits/regex_compiler.tcc: Adjust all calls to
5814         __throw_regex_error.
5815         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
5816         attribute.
5817         * include/bits/regex_scanner.tcc: Likewise.
5818         * src/c++11/regex.cc (desc): New helper function.
5819         (regex_error::regex_error(error_type)): Use desc to get a string
5820         corresponding to the error code.
5821
5822 \f
5823 Copyright (C) 2022 Free Software Foundation, Inc.
5824
5825 Copying and distribution of this file, with or without modification,
5826 are permitted in any medium without royalty provided the copyright
5827 notice and this notice are preserved.