libstdc++-v3/ChangeLog

   1 2023-05-25  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * testsuite/util/testsuite_allocator.h (PointerBase): Add
   4         relational operators.
   5
   6 2023-05-25  Alexandre Oliva  <oliva@adacore.com>
   7
   8         * testsuite/20_util/to_chars/long_double.cc: Expect execution
   9         fail on x86-vxworks.
  10
  11 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
  12
  13         PR libstdc++/109949
  14         * include/experimental/bits/simd.h (__intrinsic_type): If
  15         __ALTIVEC__ is defined, map gnu::vector_size types to their
  16         corresponding __vector T types without losing unsignedness of
  17         integer types. Also prefer long long over long.
  18         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
  19         object to the expected unsigned vector type.
  20
  21 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
  22
  23         PR libstdc++/109261
  24         * include/experimental/bits/simd.h (__intrinsic_type):
  25         Specialize __intrinsic_type<double, 8> and
  26         __intrinsic_type<double, 16> in any case, but provide the member
  27         type only with __aarch64__.
  28
  29 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
  30
  31         PR libstdc++/109261
  32         * include/experimental/bits/simd_neon.h (_S_reduce): Add
  33         constexpr and make NEON implementation conditional on
  34         not __builtin_is_constant_evaluated.
  35
  36 2023-05-23  Matthias Kretz  <m.kretz@gsi.de>
  37
  38         PR libstdc++/109261
  39         * include/experimental/bits/simd.h (_SimdWrapper::_M_set):
  40         Avoid vector builtin subscripting in constant expressions.
  41         (resizing_simd_cast): Avoid memcpy if constant_evaluated.
  42         (const_where_expression, where_expression, where)
  43         (__extract_part, simd_mask, _SimdIntOperators, simd): Add either
  44         _GLIBCXX_SIMD_CONSTEXPR (on public APIs), or constexpr (on
  45         internal APIs).
  46         * include/experimental/bits/simd_builtin.h (__vector_permute)
  47         (__vector_shuffle, __extract_part, _GnuTraits::_SimdCastType1)
  48         (_GnuTraits::_SimdCastType2, _SimdImplBuiltin)
  49         (_MaskImplBuiltin::_S_store): Add constexpr.
  50         (_CommonImplBuiltin::_S_store_bool_array)
  51         (_SimdImplBuiltin::_S_load, _SimdImplBuiltin::_S_store)
  52         (_SimdImplBuiltin::_S_reduce, _MaskImplBuiltin::_S_load): Add
  53         constant_evaluated case.
  54         * include/experimental/bits/simd_fixed_size.h
  55         (_S_masked_load): Reword comment.
  56         (__tuple_element_meta, __make_meta, _SimdTuple::_M_apply_r)
  57         (_SimdTuple::_M_subscript_read, _SimdTuple::_M_subscript_write)
  58         (__make_simd_tuple, __optimize_simd_tuple, __extract_part)
  59         (__autocvt_to_simd, _Fixed::__traits::_SimdBase)
  60         (_Fixed::__traits::_SimdCastType, _SimdImplFixedSize): Add
  61         constexpr.
  62         (_SimdTuple::operator[], _M_set): Add constexpr and add
  63         constant_evaluated case.
  64         (_MaskImplFixedSize::_S_load): Add constant_evaluated case.
  65         * include/experimental/bits/simd_scalar.h: Add constexpr.
  66         * include/experimental/bits/simd_x86.h (_CommonImplX86): Add
  67         constexpr and add constant_evaluated case.
  68         (_SimdImplX86::_S_equal_to, _S_not_equal_to, _S_less)
  69         (_S_less_equal): Value-initialize to satisfy constexpr
  70         evaluation.
  71         (_MaskImplX86::_S_load): Add constant_evaluated case.
  72         (_MaskImplX86::_S_store): Add constexpr and constant_evaluated
  73         case. Value-initialize local variables.
  74         (_MaskImplX86::_S_logical_and, _S_logical_or, _S_bit_not)
  75         (_S_bit_and, _S_bit_or, _S_bit_xor): Add constant_evaluated
  76         case.
  77         * testsuite/experimental/simd/pr109261_constexpr_simd.cc: New
  78         test.
  79
  80 2023-05-22  Matthias Kretz  <m.kretz@gsi.de>
  81
  82         * include/experimental/bits/simd_builtin.h (_S_fpclassify): Move
  83         __infn into #ifdef'ed block.
  84         * testsuite/experimental/simd/tests/fpclassify.cc: Declare
  85         constants only when used.
  86         * testsuite/experimental/simd/tests/frexp.cc: Likewise.
  87         * testsuite/experimental/simd/tests/logarithm.cc: Likewise.
  88         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc:
  89         Likewise.
  90         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
  91         Move totest and expect1 into #ifdef'ed block.
  92
  93 2023-05-19  Gerald Pfeifer  <gerald@pfeifer.com>
  94
  95         * doc/xml/manual/strings.xml: Move lafstern.org reference to https.
  96         * doc/html/manual/strings.html: Regenerate.
  97
  98 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
  99
 100         PR libstdc++/109883
 101         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc: New test.
 102
 103 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
 104
 105         PR libstdc++/109883
 106         * include/c_global/cmath (atan2, fmod, pow): Move
 107         __gnu_cxx::__promote_2 using templates after _Float{16,32,64,128} and
 108         __gnu_cxx::__bfloat16_t overloads.
 109         (copysign, fdim, fmax, fmin, hypot, nextafter, remainder, remquo):
 110         Likewise.
 111         (fma): Move __gnu_cxx::__promote_3 using template after
 112         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t overloads.
 113
 114 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 115
 116         * testsuite/18_support/headers/limits/synopsis.cc: Uncomment
 117         checks for float_round_style and float_denorm_style.
 118
 119 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 120
 121         * include/bits/c++config: Add system_header pragma.
 122
 123 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 124
 125         * include/std/expected (expected::and_then, expected::or_else)
 126         (expected::transform, expected::transform_error): Fix exception
 127         specifications as per LWG 3877.
 128         (expected<void, E>::and_then, expected<void, E>::transform):
 129         Likewise.
 130         * testsuite/20_util/expected/lwg3877.cc: New test.
 131
 132 2023-05-17  Ken Matsui  <kmatsui@cs.washington.edu>
 133
 134         * include/std/type_traits: Use __bool_constant instead of
 135         integral_constant.
 136
 137 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 138
 139         * configure: Regenerate.
 140
 141 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 142
 143         PR libstdc++/109741
 144         * acinclude.m4 (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Define.
 145         * config.h.in: Regenerate.
 146         * configure: Regenerate.
 147         * configure.ac: Use GLIBCXX_CHECK_ALIGNAS_CACHELINE.
 148         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex): Do not
 149         align lock table if not supported. use __GCC_DESTRUCTIVE_SIZE
 150         instead of hardcoded 64.
 151
 152 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 153
 154         * acinclude.m4 (GLIBCXX_USE_C99): Check for isblank in C++11
 155         mode and define _GLIBCXX_USE_C99_CTYPE. Check for <fenv.h>
 156         functions in C++11 mode and define _GLIBCXX_USE_C99_FENV.
 157         * config.h.in: Regenerate.
 158         * configure: Regenerate.
 159         * include/c_compatibility/fenv.h: Check _GLIBCXX_USE_C99_FENV
 160         instead of _GLIBCXX_USE_C99_FENV_TR1.
 161         * include/c_global/cfenv: Likewise.
 162         * include/c_global/cctype: Check _GLIBCXX_USE_C99_CTYPE instead
 163         of _GLIBCXX_USE_C99_CTYPE_TR1.
 164
 165 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 166
 167         * acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
 168         C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
 169         <inttypes.h> features in C++11 mode and define
 170         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
 171         * config.h.in: Regenerate.
 172         * configure: Regenerate.
 173         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
 174         * include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
 175         of _GLIBCXX_USE_C99_STDINT_TR1.
 176         * include/c_compatibility/inttypes.h: Check
 177         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
 178         instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
 179         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 180         * include/c_compatibility/stdatomic.h: Check
 181         _GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
 182         * include/c_compatibility/stdint.h: Likewise.
 183         * include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
 184         and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
 185         _GLIBCXX_USE_C99_INTTYPES_TR1 and
 186         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 187         * include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
 188         instead of _GLIBCXX_USE_C99_STDINT_TR1.
 189         * include/std/atomic: Likewise.
 190         * src/c++11/cow-stdexcept.cc: Likewise.
 191         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 192         Likewise.
 193         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
 194         Likewise.
 195
 196 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 197
 198         * acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
 199         functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
 200         * config.h.in: Regenerate.
 201         * configure: Regenerate.
 202         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
 203         * include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
 204         instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
 205
 206 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 207
 208         * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
 209         assertion to ensure expected exception is throw.
 210
 211 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 212
 213         * testsuite/libstdc++-prettyprinters/chrono.cc: Only test
 214         printer for chrono::zoned_time for cx11 ABI and tzdb effective
 215         target.
 216
 217 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 218
 219         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define
 220         _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK in terms of _GLIBCXX_TSAN.
 221         * configure: Regenerate.
 222
 223 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         * acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
 226         to check for nan, nanf, and nanl.
 227         * configure: Regenerate.
 228
 229 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         * include/bits/char_traits.h (char_traits<char16_t>): Do not
 232         depend on _GLIBCXX_USE_C99_STDINT_TR1.
 233         (char_traits<char32_t>): Likewise.
 234         * include/experimental/source_location: Likewise.
 235
 236 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 237
 238         * include/std/atomic (atomic_int_least8_t, atomic_uint_least8_t)
 239         (atomic_int_least16_t, atomic_uint_least16_t)
 240         (atomic_int_least32_t, atomic_uint_least32_t)
 241         (atomic_int_least64_t, atomic_uint_least64_t)
 242         (atomic_int_fast16_t, atomic_uint_fast16_t)
 243         (atomic_int_fast32_t, atomic_uint_fast32_t)
 244         (atomic_int_fast64_t, atomic_uint_fast64_t)
 245         (atomic_intmax_t, atomic_uintmax_t): Define unconditionally.
 246         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Adjust.
 247
 248 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 249
 250         * include/bits/algorithmfwd.h (shuffle): Do not depend on
 251         _GLIBCXX_USE_C99_STDINT_TR1.
 252         * include/bits/ranges_algo.h (shuffle): Likewise.
 253         * include/bits/stl_algo.h (shuffle): Likewise.
 254         * include/ext/random: Likewise.
 255         * include/ext/throw_allocator.h (random_condition): Likewise.
 256         * include/std/random: Likewise.
 257         * src/c++11/cow-string-inst.cc: Likewise.
 258         * src/c++11/random.cc: Likewise.
 259
 260 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         * testsuite/experimental/feat-cxx14.cc: Remove dependency on
 263         _GLIBCXX_USE_C99_STDINT_TR1.
 264
 265 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 266
 267         * testsuite/22_locale/locale/cons/unicode.cc: Remove dependency
 268         on _GLIBCXX_USE_C99_STDINT_TR1.
 269
 270 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 271
 272         * testsuite/21_strings/basic_string_view/typedefs.cc: Remove
 273         dependency on _GLIBCXX_USE_C99_STDINT_TR1.
 274         * testsuite/experimental/string_view/typedefs.cc: Likewise.
 275
 276 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 277
 278         * src/c++17/floating_from_chars.cc [USE_STRTOD_FOR_FROM_CHARS]
 279         (auto_locale, auto_ferounding): New class types.
 280         (from_chars_impl): Use auto_locale and auto_ferounding.
 281
 282 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 283
 284         PR libstdc++/109772
 285         * include/std/chrono (hh_mm_ss::__fits): Remove variable
 286         template.
 287         (hh_mm_ss::__subseconds): Remove __fits from constraints.
 288         * testsuite/std/time/hh_mm_ss/109772.cc: New test.
 289         * testsuite/std/time/hh_mm_ss/1.cc: Adjust expected size for
 290         hh_mm_ss<duration<int, std::pico>>.
 291
 292 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 293
 294         * config/abi/pre/gnu.ver: Export basic_string::_S_allocate.
 295         * include/bits/basic_ios.h: Add static assertion checking
 296         traits_type::value_type.
 297         * include/bits/basic_string.h: Likewise. Do not rebind
 298         allocator, and add static assertion checking its value_type.
 299         (basic_string::_Alloc_traits_impl): Remove class template.
 300         (basic_string::_S_allocate): New static member function.
 301         (basic_string::assign): Use _S_allocate.
 302         * include/bits/basic_string.tcc (basic_string::_M_create)
 303         (basic_string::reserve, basic_string::_M_replace): Likewise.
 304         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/debug.cc:
 305         Disable for C++20 and later.
 306         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
 307         Likweise.
 308
 309 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 310
 311         PR libstdc++/109758
 312         * include/bits/std_abs.h (abs(__float128)): Handle negative NaN
 313         and negative zero correctly.
 314         * testsuite/26_numerics/headers/cmath/109758.cc: New test.
 315
 316 2023-05-10  François Dumont  <fdumont@gcc.gnu.org>
 317
 318         * include/bits/hashtable_policy.h
 319         (_NodeBuilder<>::_S_build): Use __node_ptr.
 320         (_ReuseOrAllocNode<>): Use __node_ptr in place of __node_type*.
 321         (_AllocNode<>): Likewise.
 322         (_Equality<>::_M_equal): Remove const_iterator usages. Only preserved
 323         to call std::is_permutation in the non-unique key implementation.
 324         * include/bits/hashtable.h (_Hashtable<>::_M_update_begin()): Capture
 325         _M_begin() once.
 326         (_Hashtable<>::_M_bucket_begin(size_type)): Implement implicitly inline.
 327         (_Hashtable<>::_M_insert_bucket_begin): Likewise.
 328         (_Hashtable<>::_M_remove_bucket_begin): Likewise.
 329         (_Hashtable<>::_M_compute_hash_code): Use __node_ptr rather than
 330         const_iterator.
 331         (_Hashtable<>::find): Likewise.
 332         (_Hashtable<>::_M_emplace): Likewise.
 333         (_Hashtable<>::_M_insert_unique): Likewise.
 334
 335 2023-05-09  Jonathan Wakely  <jwakely@redhat.com>
 336
 337         * python/libstdcxx/v6/printers.py (StdChronoDurationPrinter):
 338         Print floating-point durations correctly.
 339         (StdChronoTimePointPrinter): Support printing only the value,
 340         not the type name. Uncomment handling for known clocks.
 341         (StdChronoZonedTimePrinter): Remove type names from output.
 342         (StdChronoCalendarPrinter): Fix hh_mm_ss member access.
 343         (StdChronoTimeZonePrinter): Add equals sign to output.
 344         * testsuite/libstdc++-prettyprinters/chrono.cc: New test.
 345
 346 2023-05-05  Alexandre Oliva  <oliva@adacore.com>
 347
 348         * testsuite/20_util/from_chars/4.cc: Skip long double test06
 349         on aarch64-vxworks.
 350         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
 351         aarch64-vxworks.
 352
 353 2023-05-04  Jonathan Wakely  <jwakely@redhat.com>
 354
 355         * doc/xml/manual/abi.xml (abi.versioning.history): Document
 356         libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
 357         * doc/html/manual/abi.html: Regenerate.
 358
 359 2023-05-04  Florian Weimer  <fweimer@redhat.com>
 360
 361         * doc/xml/manual/abi.xml (abi.versioning.history): Add
 362         GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
 363         libgcc_s.
 364
 365 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 366
 367         * src/c++17/floating_from_chars.cc
 368         (_ZSt10from_charsPKcS0_RDF128_St12chars_format): New alias to
 369         _ZSt10from_charsPKcS0_Ru9__ieee128St12chars_format.
 370         * src/c++17/floating_to_chars.cc (_ZSt8to_charsPcS_DF128_): New alias to
 371         _ZSt8to_charsPcS_u9__ieee128.
 372         (_ZSt8to_charsPcS_DF128_St12chars_format): New alias to
 373         _ZSt8to_charsPcS_u9__ieee128St12chars_format.
 374         (_ZSt8to_charsPcS_DF128_St12chars_formati): New alias to
 375         _ZSt8to_charsPcS_u9__ieee128St12chars_formati.
 376         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Updated.
 377
 378 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 379
 380         * configure.host (abi_baseline_pair): Use powerpc64le-linux-gnu
 381         rather than powerpc64-linux-gnu for powerpc64le*-linux*.
 382         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Remove
 383         _ZTI*DF128_, _ZTI*DF64x symbols and symbols in
 384         GLIBCXX_IEEE128_3.4.{29,30,31} and CXXABI_IEEE128_1.3.13 symbol
 385         versions.
 386         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: New
 387         file.
 388
 389 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
 390             Jonathan Wakely  <jwakely@redhat.com>
 391
 392         PR libstdc++/109703
 393         * include/bits/basic_string.h (basic_string(Iter, Iter, Alloc)):
 394         Initialize _M_string_length.
 395
 396 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
 397
 398         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 399         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 400         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 401         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 402         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 403         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 404         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 405         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 406
 407 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
 408
 409         PR libstdc++/109694
 410         * src/c++98/ios_init.cc: Add #pragma GCC diagnostic ignored for
 411         -Wattribute-alias.
 412
 413 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 414
 415         * include/bits/random.h (gamma_distribution): Add to the right
 416         doxygen group.
 417         (discrete_distribution, piecewise_constant_distribution)
 418         (piecewise_linear_distribution): Create a new doxygen group and
 419         fix the incomplete doxygen comments.
 420         * include/bits/uniform_int_dist.h (uniform_int_distribution):
 421         Add to doxygen group.
 422
 423 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 424
 425         * include/bits/uses_allocator.h: Add missing @file comment.
 426         * include/bits/regex.tcc: Remove stray doxygen comments.
 427         * include/experimental/memory_resource: Likewise.
 428         * include/std/bit: Tweak doxygen @cond comments.
 429         * include/std/expected: Likewise.
 430         * include/std/numbers: Likewise.
 431
 432 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 433
 434         * doc/doxygen/user.cfg.in (STRIP_FROM_PATH): Remove prefixes
 435         from header paths.
 436
 437 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 438
 439         * include/bits/move.h: Simplify opening/closing namespace std.
 440
 441 2023-04-28  Jakub Jelinek  <jakub@redhat.com>
 442
 443         PR libstdc++/108969
 444         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export
 445         _ZSt21ios_base_library_initv.
 446         * testsuite/util/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.32
 447         symver and make it the latestp.
 448         * src/c++98/ios_init.cc (ios_base_library_init): New alias.
 449         * acinclude.m4 (libtool_VERSION): Change to 6:32:0.
 450         * include/std/iostream: If init_priority attribute is supported
 451         and _GLIBCXX_SYMVER_GNU, force undefined _ZSt21ios_base_library_initv
 452         symbol into the object.
 453         * configure: Regenerated.
 454
 455 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 456
 457         * include/bits/mofunc_impl.h: Fix typo in doxygen comment.
 458         * include/std/format: Likewise.
 459
 460 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 461
 462         * doc/doxygen/user.cfg.in (FORMULA_TRANSPARENT, DOT_FONTNAME)
 463         (DOT_FONTSIZE, DOT_TRANSPARENT): Remove obsolete options.
 464
 465 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 466
 467         * doc/doxygen/user.cfg.in (SOURCE_BROWSER): Only set to YES for
 468         HTML docs.
 469         * include/bits/gslice_array.h (_DEFINE_VALARRAY_OPERATOR): Omit
 470         from doxygen docs.
 471         * include/bits/indirect_array.h (_DEFINE_VALARRAY_OPERATOR):
 472         Likewise.
 473         * include/bits/mask_array.h (_DEFINE_VALARRAY_OPERATOR):
 474         Likewise.
 475         * include/bits/slice_array.h (_DEFINE_VALARRAY_OPERATOR):
 476         Likewise.
 477         * include/std/valarray (_DEFINE_VALARRAY_UNARY_OPERATOR)
 478         (_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT)
 479         (_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT)
 480         (_DEFINE_BINARY_OPERATOR): Likewise.
 481
 482 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 483
 484         * include/bits/memory_resource.h: Improve doxygen comments.
 485         * include/std/memory_resource: Likewise.
 486
 487 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 488
 489         PR libstdc++/40380
 490         * include/bits/basic_string.h: Improve doxygen comments.
 491         * include/bits/cow_string.h: Likewise.
 492         * include/bits/forward_list.h: Likewise.
 493         * include/bits/fs_dir.h: Likewise.
 494         * include/bits/fs_path.h: Likewise.
 495         * include/bits/quoted_string.h: Likewise.
 496         * include/bits/stl_bvector.h: Likewise.
 497         * include/bits/stl_map.h: Likewise.
 498         * include/bits/stl_multimap.h: Likewise.
 499         * include/bits/stl_multiset.h: Likewise.
 500         * include/bits/stl_set.h: Likewise.
 501         * include/bits/stl_vector.h: Likewise.
 502         * include/bits/unordered_map.h: Likewise.
 503         * include/bits/unordered_set.h: Likewise.
 504         * include/std/filesystem: Likewise.
 505         * include/std/iomanip: Likewise.
 506
 507 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 508
 509         PR libstdc++/105081
 510         * src/c++11/random.cc (__throw_syserr): New function.
 511         (random_device::_M_init, random_device::_M_init_pretr1): Use new
 512         function for bad tokens.
 513         (random_device::_M_getval): Use new function for read errors.
 514         * testsuite/util/testsuite_random.h (random_device_available):
 515         Change catch handler to use std::system_error.
 516
 517 2023-04-24  Patrick Palka  <ppalka@redhat.com>
 518
 519         * include/bits/max_size_type.h (__max_diff_type::operator>>=):
 520         Fix propagation of sign bit.
 521         * testsuite/std/ranges/iota/max_size_type.cc: Avoid using the
 522         non-standard 'signed typedef-name'.  Add some compile-time tests
 523         for right-shifting a negative __max_diff_type value by more than
 524         one.
 525
 526 2023-04-19  Patrick Palka  <ppalka@redhat.com>
 527             Jonathan Wakely  <jwakely@redhat.com>
 528
 529         PR c++/100157
 530         * include/bits/utility.h (_Nth_type): Conditionally define in
 531         terms of __type_pack_element if available.
 532         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
 533         additional errors from the new built-in.
 534
 535 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
 536
 537         Revert:
 538         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
 539
 540         PR libstdc++/108969
 541         * src/Makefile.am: Move globals_io.cc to here.
 542         * src/Makefile.in: Regenerate.
 543         * src/c++98/Makefile.am: Remove globals_io.cc from here.
 544         * src/c++98/Makefile.in: Regenerate.
 545         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
 546         symbol name and then export with GLIBCXX_3.4.31 symver.
 547         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
 548         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
 549         Regenerate.
 550         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
 551         Regenerate.
 552         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
 553         Regenerate.
 554         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
 555         Regenerate.
 556         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
 557         Regenerate.
 558         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
 559         Regenerate.
 560         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
 561         Regenerate.
 562         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
 563         Regenerate.
 564         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
 565
 566 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
 567
 568         Revert:
 569         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
 570
 571         PR libstdc++/108969
 572         * config/abi/pre/gnu.ver: Fix preprocessor condition.
 573
 574 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
 575
 576         * doc/xml/manual/extensions.xml: Fix example to declare and
 577         qualify std::free, and use NULL instead of 0.
 578         * doc/html/manual/ext_demangling.html: Regenerate.
 579         * libsupc++/cxxabi.h: Adjust doxygen comments.
 580
 581 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
 582
 583         PR libstdc++/108969
 584         * config/abi/pre/gnu.ver: Fix preprocessor condition.
 585
 586 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
 587
 588         PR libstdc++/108969
 589         * src/Makefile.am: Move globals_io.cc to here.
 590         * src/Makefile.in: Regenerate.
 591         * src/c++98/Makefile.am: Remove globals_io.cc from here.
 592         * src/c++98/Makefile.in: Regenerate.
 593         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
 594         symbol name and then export with GLIBCXX_3.4.31 symver.
 595         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
 596         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
 597         Regenerate.
 598         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
 599         Regenerate.
 600         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
 601         Regenerate.
 602         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
 603         Regenerate.
 604         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
 605         Regenerate.
 606         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
 607         Regenerate.
 608         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
 609         Regenerate.
 610         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
 611         Regenerate.
 612         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
 613
 614 2023-04-18  Patrick Palka  <ppalka@redhat.com>
 615
 616         PR libstdc++/108827
 617         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
 618         for C++23.
 619         * include/std/ranges (range_adaptor_closure): Define for C++23.
 620         * include/std/version (__cpp_lib_ranges): Bump value for
 621         C++23.
 622         * testsuite/std/ranges/version_c++23.cc: Bump expected value
 623         of __cpp_lib_ranges.
 624         * testsuite/std/ranges/range_adaptor_closure.cc: New test.
 625
 626 2023-04-18  Patrick Palka  <ppalka@redhat.com>
 627
 628         * include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
 629         Define for C++23.
 630         (__cpp_lib_ranges_iota): Likewise.
 631         (__cpp_lib_ranges_find_last): Likewise.
 632         (__cpp_lib_fold): Rename to ...
 633         (__cpp_lib_ranges_fold): ... this.
 634         * include/std/version: As above.
 635         * testsuite/25_algorithms/fold_left/1.cc: Adjust after
 636         renaming __cpp_lib_fold.
 637         * testsuite/std/ranges/version_c++23.cc: Verify values
 638         of the above feature-test macros.
 639
 640 2023-04-18  Patrick Palka  <ppalka@redhat.com>
 641
 642         PR libstdc++/109525
 643         * include/std/ranges (views::_AsConst::operator()): Add
 644         missing const to constant_range test.
 645         * testsuite/std/ranges/adaptors/as_const/1.cc (test02):
 646         Improve formatting.  Adjust expected type of v2.
 647         (test03): New test.
 648
 649 2023-04-14  Patrick Palka  <ppalka@redhat.com>
 650
 651         * include/bits/ranges_base.h (const_iterator_t): Define for C++23.
 652         (const_sentinel_t): Likewise.
 653         (range_const_reference_t): Likewise.
 654         (constant_range): Likewise.
 655         (__cust_access::__possibly_const_range): Likewise, replacing ...
 656         (__cust_access::__as_const): ... this.
 657         (__cust_access::_CBegin::operator()): Redefine for C++23 as per P2278R4.
 658         (__cust_access::_CEnd::operator()): Likewise.
 659         (__cust_access::_CRBegin::operator()): Likewise.
 660         (__cust_access::_CREnd::operator()): Likewise.
 661         (__cust_access::_CData::operator()): Likewise.
 662         * include/bits/ranges_util.h (ranges::__detail::__different_from):
 663         Make it an alias of std::__detail::__different_from.
 664         (view_interface::cbegin): Define for C++23.
 665         (view_interface::cend): Likewise.
 666         * include/bits/stl_iterator.h (__detail::__different_from): Define.
 667         (iter_const_reference_t): Define for C++23.
 668         (__detail::__constant_iterator): Likewise.
 669         (__detail::__is_const_iterator): Likewise.
 670         (__detail::__not_a_const_iterator): Likewise.
 671         (__detail::__iter_const_rvalue_reference_t): Likewise.
 672         (__detail::__basic_const_iter_cat):: Likewise.
 673         (const_iterator): Likewise.
 674         (__detail::__const_sentinel): Likewise.
 675         (const_sentinel): Likewise.
 676         (basic_const_iterator): Likewise.
 677         (common_type<basic_const_iterator<_Tp>, _Up>): Likewise.
 678         (common_type<_Up, basic_const_iterator<_Tp>>): Likewise.
 679         (common_type<basic_const_iterator<_Tp>, basic_const_iterator<Up>>):
 680         Likewise.
 681         (make_const_iterator): Define for C++23.
 682         (make_const_sentinel): Likewise.
 683         * include/std/ranges (__cpp_lib_ranges_as_const): Likewise.
 684         (as_const_view): Likewise.
 685         (enable_borrowed_range<as_const_view>): Likewise.
 686         (views::__detail::__is_ref_view): Likewise.
 687         (views::__detail::__can_is_const_view): Likewise.
 688         (views::_AsConst, views::as_const): Likewise.
 689         * include/std/span (span::const_iterator): Likewise.
 690         (span::const_reverse_iterator): Likewise.
 691         (span::cbegin): Likewise.
 692         (span::cend): Likewise.
 693         (span::crbegin): Likewise.
 694         (span::crend): Likewise.
 695         * include/std/version (__cpp_lib_ranges_as_const): Likewise.
 696         * testsuite/std/ranges/adaptors/join.cc (test06): Adjust to
 697         behave independently of C++20 vs C++23.
 698         * testsuite/std/ranges/version_c++23.cc: Verify value of
 699         __cpp_lib_ranges_as_const macro.
 700         * testsuite/24_iterators/const_iterator/1.cc: New test.
 701         * testsuite/std/ranges/adaptors/as_const/1.cc: New test.
 702
 703 2023-04-14  Patrick Palka  <ppalka@redhat.com>
 704
 705         * include/bits/ranges_base.h (__cust_access::__as_const)
 706         (__cust_access::_CBegin, __cust::cbegin)
 707         (__cust_access::_CEnd, __cust::cend)
 708         (__cust_access::_CRBegin, __cust::crbegin)
 709         (__cust_access::_CREnd, __cust::crend)
 710         (__cust_access::_CData, __cust::cdata): Move down definitions to
 711         shortly after the definition of input_range.
 712
 713 2023-04-14  Patrick Palka  <ppalka@redhat.com>
 714
 715         * include/bits/ranges_algo.h: Include <optional> for C++23.
 716         (__cpp_lib_fold): Define for C++23.
 717         (in_value_result): Likewise.
 718         (__detail::__flipped): Likewise.
 719         (__detail::__indirectly_binary_left_foldable_impl): Likewise.
 720         (__detail::__indirectly_binary_left_foldable): Likewise.
 721         (___detail:__indirectly_binary_right_foldable): Likewise.
 722         (fold_left_with_iter_result): Likewise.
 723         (__fold_left_with_iter_fn, fold_left_with_iter): Likewise.
 724         (__fold_left_fn, fold_left): Likewise.
 725         (__fold_left_first_with_iter_fn, fold_left_first_with_iter):
 726         Likewise.
 727         (__fold_left_first_fn, fold_left_first): Likewise.
 728         (__fold_right_fn, fold_right): Likewise.
 729         (__fold_right_last_fn, fold_right_last): Likewise.
 730         * include/std/version (__cpp_lib_fold): Likewise.
 731         * testsuite/25_algorithms/fold_left/1.cc: New test.
 732         * testsuite/25_algorithms/fold_right/1.cc: New test.
 733
 734 2023-04-14  Jonathan Wakely  <jwakely@redhat.com>
 735
 736         * include/std/format (formatter): Add comment to deleted default
 737         constructor of primary template.
 738         (_Checking_scanner): Add static_assert.
 739
 740 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
 741
 742         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
 743         * doc/html/*: Regenerate.
 744
 745 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
 746
 747         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
 748         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
 749         namespace to avoid clashing with libc struct.
 750         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
 751         Likewise.
 752         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
 753         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
 754         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
 755         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
 756         * testsuite/experimental/synchronized_value.cc: Require gthreads
 757         and add missing option for pthreads targets.
 758
 759 2023-04-12  Patrick Palka  <ppalka@redhat.com>
 760
 761         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
 762         for C++23.
 763         (__detail::__range_with_movable_reference): Likewise.
 764         (enumerate_view): Likewise.
 765         (enumerate_view::_Iterator): Likewise.
 766         (enumerate_view::_Sentinel): Likewise.
 767         (views::__detail::__can_enumerate_view): Likewise.
 768         (views::_Enumerate, views::enumerate): Likewise.
 769         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
 770         * testsuite/std/ranges/version_c++23.cc: Verify value of
 771         __cpp_lib_ranges_enumerate.
 772         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
 773
 774 2023-04-12  Patrick Palka  <ppalka@redhat.com>
 775
 776         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
 777         Propagate _M_trailing_empty in the const-converting constructor
 778         as per LWG 3904.
 779         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
 780         assertion.
 781         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
 782
 783 2023-04-12  Patrick Palka  <ppalka@redhat.com>
 784
 785         * src/c++17/floating_from_chars.cc: Include <algorithm>,
 786         <iterator>, <limits> and <cstdint>.
 787
 788 2023-04-12  Patrick Palka  <ppalka@redhat.com>
 789
 790         PR libstdc++/108291
 791         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
 792         parameter types of the lambda wrapper passed to adjacent_find.
 793         (chunk_by_view::_M_find_prev): Likewise.
 794         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
 795         New tests.
 796
 797 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
 798
 799         PR libstdc++/109482
 800         * include/experimental/internet (basic_endpoint::basic_endpoint()):
 801         Ensure that the required union members are active. Only define
 802         as constexpr for C++20 and later.
 803         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
 804         Likewise.
 805         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
 806         check constexpr default constructor for C++20 and later.
 807         * testsuite/experimental/net/internet/endpoint/extensible.cc:
 808         Likewise.
 809
 810 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
 811
 812         * src/c++20/tzdata.zi: Import new file from 2023c release.
 813
 814 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
 815
 816         * include/precompiled/stdc++.h (C++17): Don't double-include
 817         <charconv>, once with wrong conditions.
 818         * testsuite/18_support/96817.cc: Require hosted.
 819         * testsuite/18_support/bad_exception/59392.cc: Ditto.
 820         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
 821         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
 822         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
 823         Ditto.
 824
 825 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
 826
 827         * include/bits/c++config: When __STDC_HOSTED__ is zero,
 828         disable _GLIBCXX_DEBUG and, if it was set, enable
 829         _GLIBCXX_ASSERTIONS.
 830         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
 831         Include <bits/c++config.h> when determining whether debug is
 832         set, in order to inherit the logic from above
 833
 834 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
 835
 836         * testsuite/17_intro/versionconflict.cc: New test.
 837         * include/std/version: Allow disabling the system_header pragma
 838         via _GLIBCXX_TESTING_SYSHDR.
 839
 840 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
 841
 842         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
 843         Synchronize the definition block with...
 844         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
 845         ... this one here.  Also define the 202202L value, rather than
 846         leaving it up to purely unique_ptr.h, so that the value is
 847         synchronized across all headers.
 848         (__gnu_debug::_Safe_iterator_base): Move into new conditional
 849         block.
 850         * include/std/memory (__cpp_lib_atomic_value_initialization):
 851         Define on freestanding under the same conditions as in
 852         atomic_base.h.
 853         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
 854         Also define on freestanding.
 855         (__cpp_lib_to_chars): Ditto.
 856         (__cpp_lib_gcd): Ditto.
 857         (__cpp_lib_gcd_lcm): Ditto.
 858         (__cpp_lib_raw_memory_algorithms): Ditto.
 859         (__cpp_lib_array_constexpr): Ditto.
 860         (__cpp_lib_nonmember_container_access): Ditto.
 861         (__cpp_lib_clamp): Ditto.
 862         (__cpp_lib_constexpr_char_traits): Ditto.
 863         (__cpp_lib_constexpr_string): Ditto.
 864         (__cpp_lib_sample): Ditto.
 865         (__cpp_lib_lcm): Ditto.
 866         (__cpp_lib_constexpr_iterator): Ditto.
 867         (__cpp_lib_constexpr_char_traits): Ditto.
 868         (__cpp_lib_interpolate): Ditto.
 869         (__cpp_lib_constexpr_utility): Ditto.
 870         (__cpp_lib_shift): Ditto.
 871         (__cpp_lib_ranges): Ditto.
 872         (__cpp_lib_move_iterator_concept): Ditto.
 873         (__cpp_lib_constexpr_numeric): Ditto.
 874         (__cpp_lib_constexpr_functional): Ditto.
 875         (__cpp_lib_constexpr_algorithms): Ditto.
 876         (__cpp_lib_constexpr_tuple): Ditto.
 877         (__cpp_lib_constexpr_memory): Ditto.
 878
 879 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
 880
 881         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
 882         timeout factor on hppa*-*-*.
 883
 884 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
 885
 886         * include/bits/regex.h (sub_match::swap): New function.
 887         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
 888
 889 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
 890
 891         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
 892         example program.
 893         * doc/html/manual/ext_demangling.html: Regenerate.
 894
 895 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 896
 897         PR tree-optimization/107087
 898         * include/bits/cow_string.h (basic_string::size()): Add
 899         optimizer hint that _S_empty_rep()._M_length is always zero.
 900         (basic_string::length()): Call size().
 901
 902 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 903
 904         PR libstdc++/109339
 905         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
 906         Add attribute access with access-mode 'none'.
 907         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
 908
 909 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
 910
 911         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
 912         Revert change from member function to data member. Fix for
 913         constant evaluation by detecting which union member is active.
 914         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
 915         flag.
 916
 917 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 918
 919         PR libstdc++/109242
 920         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
 921         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
 922
 923 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 924
 925         * include/experimental/internet (ip::make_address): Implement
 926         missing overload.
 927         (ip::address_v4::broadcast()): Avoid undefined shift.
 928         (ip::basic_endpoint): Fix member functions for constexpr.
 929         (ip::basic_endpoint::_M_is_v6): Replace member function with
 930         data member, adjust member functions using it.
 931         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
 932         content.
 933         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
 934         constexpr checks to work in C++14.
 935         * testsuite/experimental/net/internet/address/v4/creation.cc:
 936         Likewise.
 937         * testsuite/experimental/net/internet/endpoint/cons.cc:
 938         Likewise.
 939         * testsuite/experimental/net/internet/network/v4/cons.cc:
 940         Likewise.
 941         * testsuite/experimental/net/internet/network/v4/members.cc:
 942         Likewise.
 943         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
 944
 945 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 946
 947         * include/std/expected (expected::value() &): Use const lvalue
 948         for unex member passed to bad_expected_access constructor, as
 949         per LWG 3843.
 950
 951 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 952
 953         PR libstdc++/109340
 954         * include/std/expected (expected::transform): Use
 955         std::remove_cv_t instead of std::remove_cvref_t.
 956         (expected::transform_error): Likewise.
 957         (expected<cv void, E>::transform): Likewise.
 958         (expected<cv void, E>::transform_error): Likewise.
 959         * include/std/optional (transform): Use std::remove_cv_t.
 960         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
 961
 962 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
 963
 964         * include/std/optional (optional): Adjust static assertion to
 965         reject arrays and functions as well as references.
 966         * testsuite/20_util/optional/requirements_neg.cc: New test.
 967
 968 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 969
 970         PR libstdc++/103387
 971         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
 972         std::use_facet instead of cached _M_num_get facet.
 973         (istream::operator>>(short&)): Likewise.
 974         (istream::operator>>(int&)): Likewise.
 975         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
 976         std::use_facet instead of cached _M_num_put facet.
 977
 978 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 979
 980         * include/bits/char_traits.h (char_traits::copy): Return without
 981         using memcpy if n==0.
 982         (char_traits::assign): Likewise for memset.
 983
 984 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 985
 986         PR libstdc++/109299
 987         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
 988         hint for compiler that local strings fit in the local buffer.
 989
 990 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
 991
 992         PR libstdc++/109288
 993         * include/std/chrono (__detail::__get_leap_second_info): Update
 994         expiry date of hardcoded leapseconds list.
 995         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
 996         Likewise.
 997         * src/c++20/tzdata.zi: Import new file from 2023a release.
 998         * testsuite/std/time/time_zone/get_info_local.cc: Only check
 999         transitions for Egypt up to 2014.
1000
1001 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1002
1003         * include/experimental/bits/simd.h (is_simd_flag_type): New.
1004         (_IsSimdFlagType): New.
1005         (copy_from, copy_to, load ctors): Constrain _Flags using
1006         _IsSimdFlagType.
1007
1008 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1009
1010         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
1011         _Base::_S_divides if the optimized _S_divides function is hidden
1012         via the preprocessor.
1013
1014 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
1015
1016         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
1017         warning if size_t is not unsigned long.
1018
1019 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1020
1021         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
1022         Add overload, as per LWG 3893.
1023         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1024         Check assignment from nullptr.
1025
1026 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1027
1028         * include/std/format (formatter<const charT[N], charT>): Do not
1029         define partial speclialization, as per LWG 3833.
1030         * testsuite/std/format/formatter/requirements.cc: Check it.
1031
1032 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1033
1034         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
1035         as per LWG 3792.
1036         * testsuite/20_util/exchange/constexpr.cc: Check for it.
1037
1038 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1039
1040         * include/std/version (__cpp_lib_format): Define.
1041         * testsuite/std/format/functions/format.cc: Check it.
1042
1043 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1044
1045         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
1046         Pass rvalues to the callback, as now allowed by LWG 3645.
1047         Enforce preconditions on the return value.
1048         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
1049         Adjust.
1050
1051 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1052
1053         * include/std/format: Add a comment noting that the resolution
1054         of LWG 3720 has been applied..
1055
1056 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1057
1058         * include/bits/regex.h (match_results): Add allocator-extended
1059         copy and move constructors, as per LWG 2195.
1060         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
1061
1062 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1063
1064         * include/bits/stream_iterator.h (istream_iterator): Add
1065         constexpr to copy constructor, as per LWG 3600.
1066         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
1067         Check copy construction.
1068
1069 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1070
1071         * include/experimental/bits/simd_x86.h
1072         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
1073         with __RECIPROCAL_MATH__.
1074
1075 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1076
1077         * include/experimental/bits/simd_detail.h: Don't define
1078         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
1079         * include/experimental/bits/simd_x86.h (_S_divides): Remove
1080         check for __clang__.
1081
1082 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1083
1084         * include/experimental/bits/simd_detail.h: Don't declare the
1085         simd API as constexpr with Clang.
1086         * include/experimental/bits/simd_x86.h (__movm): New.
1087         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
1088         and ?:.
1089         (_SimdImplX86::_S_masked_unary): Clang does not implement the
1090         same builtins. Implement the function using __movm, ?:, and -
1091         operators on vector_size types instead.
1092
1093 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1094
1095         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
1096         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
1097
1098 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1099
1100         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
1101         formatting.
1102
1103 2023-03-20  Marek Polacek  <polacek@redhat.com>
1104
1105         PR c++/109159
1106         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
1107         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
1108         * testsuite/23_containers/span/explicit.cc: Likewise.
1109
1110 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1111
1112         PR libstdc++/109182
1113         * include/std/expected (expected<void>::expected(in_place_t)):
1114         Remove template-head.
1115
1116 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
1117
1118         PR libstdc++/109165
1119         * testsuite/18_support/coroutines/hash.cc: Use const object
1120         in second call.
1121
1122 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
1123
1124         PR libstdc++/109165
1125         * include/std/coroutine (hash<>::operator()): Add const.
1126         * testsuite/18_support/coroutines/hash.cc: New test.
1127
1128 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1129
1130         PR libstdc++/109111
1131         * include/std/ranges (repeat_view): Remove redundant parentheses
1132         in requires-clause.
1133         (repeat_view::_Iterator): Correct the requires-clause.
1134
1135 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1136
1137         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
1138         Define.
1139         (__cpp_lib_move_iterator_concept): Define for C++20.
1140         (move_iterator::iterator_concept): Strengthen as per P2520R0.
1141         * include/std/version (__cpp_lib_move_iterator_concept): Define
1142         for C++20.
1143         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
1144
1145 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1146
1147         * include/bits/ranges_util.h (view_interface::empty): Add
1148         preferred overloads that use ranges::size when the range is
1149         sized as per LWG 3715.
1150         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
1151
1152 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1153
1154         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
1155         Only define for C++17 and later.
1156
1157 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1158
1159         * src/Makefile.am: Add comment about linker script fragments.
1160         * src/Makefile.in: Regenerate.
1161
1162 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1163
1164         PR libstdc++/62196
1165         * include/bits/mask_array.h (mask_array): Add assertions to
1166         assignment operators.
1167         * include/std/valarray (valarray::operator[](valarray<bool>)):
1168         Add assertions.
1169         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
1170         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
1171         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
1172         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
1173         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
1174         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
1175         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
1176         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
1177         * testsuite/26_numerics/valarray/mask.cc: New test.
1178
1179 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
1180
1181         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1182         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1183
1184 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1185
1186         * doc/Makefile.am: Add comment referring to documentation.
1187         * doc/Makefile.in: Regenerate.
1188
1189 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1190
1191         * doc/html/*: Regenerate.
1192
1193 2023-03-13  Jonny Grant  <jg@jguk.org>
1194
1195         * doc/xml/faq.xml: Update copyright year.
1196
1197 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1198
1199         * include/bits/allocator.h: Fix typo in comment.
1200
1201 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
1202
1203         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
1204         if it isn't mangled as DF16b but u6__bf16.
1205
1206 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
1207
1208         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
1209         to https.
1210         * doc/html/manual/documentation_hacking.html: Regenerate.
1211
1212 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
1213
1214         PR libstdc++/109064
1215         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
1216         Remove self-recursion in __init__. Add missing _supports.
1217         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
1218         and unique().
1219
1220 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1221
1222         * include/std/ranges
1223         (cartesian_product_view::_Iterator::_Iterator): Remove
1224         constraint on default constructor as per LWG 3849.
1225         (cartesian_product_view::_Iterator::_M_prev): Adjust position
1226         of _Nm > 0 test as per LWG 3820.
1227         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
1228         checking only on sized cartesian products.
1229         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
1230
1231 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1232
1233         PR libstdc++/109024
1234         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
1235         LWG 3796.
1236         (repeat_view::_M_pred): Likewise.
1237         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
1238         * testsuite/std/ranges/repeat/1.cc (test05): New test.
1239
1240 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1241
1242         PR libstdc++/108362
1243         * include/std/ranges (__detail::__can_single_view): New concept.
1244         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
1245         end of the function declarator.
1246         (__detail::__can_iota_view): New concept.
1247         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
1248         end of the function declarator.
1249         (__detail::__can_istream_view): New concept.
1250         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
1251         end of the function declarator.
1252         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
1253         * testsuite/std/ranges/istream_view.cc (test08): New test.
1254         * testsuite/std/ranges/single_view.cc (test07): New test.
1255
1256 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1257
1258         PR libstdc++/107572
1259         * include/std/ranges (cartesian_product_view::end): When
1260         building the tuple of iterators, avoid calling ranges::begin on
1261         the first range if __empty_tail is false.
1262         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
1263
1264 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
1265
1266         PR libstdc++/108882
1267         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
1268         patterns.
1269
1270 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
1271
1272         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1273         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1274         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1275         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1276         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1277
1278 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
1279
1280         PR libstdc++/108882
1281         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
1282         not match symbols in namespace std::__gnu_cxx11_ieee128.
1283         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
1284         std::__gnu_cxx11_ieee128::money_{get,put}.
1285
1286 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
1287
1288         * libsupc++/eh_personality.cc: Fix spelling in comment.
1289
1290 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1291
1292         * testsuite/30_threads/async/async.cc (test04): Initialize
1293         steady_start, renamed from steady_begin, next to slow_start.
1294         Increase tolerance for final wait.
1295
1296 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1297
1298         * testsuite/libstdc++-prettyprinters/80276.cc: Add
1299         std::string to debug info.
1300         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
1301
1302 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1303
1304         PR libstdc++/104852
1305         PR libstdc++/95989
1306         PR libstdc++/52590
1307         * include/bits/std_thread.h (thread::_M_thread_deps): New
1308         static implicitly-inline member function.
1309         (std::thread template ctor): Pass it to _M_start_thread.
1310         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
1311         parameter, force it live on entry.
1312
1313 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1314
1315         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1316         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1317         Likewise.
1318         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1319         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1320         Likewise.
1321
1322 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
1323
1324         * include/bits/cow_string.h: Fix typo in comment.
1325
1326 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
1327
1328         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
1329         current time zone cannot be determined.
1330         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
1331         HAVE_TZDB macro and test all members unconditionally.
1332
1333 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1334
1335         PR libstdc++/108952
1336         * include/bits/uses_allocator_args.h
1337         (uses_allocator_construction_args): Implement LWG 3527.
1338         * testsuite/20_util/pair/astuple/get-2.cc: New test.
1339         * testsuite/20_util/scoped_allocator/108952.cc: New test.
1340         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
1341
1342 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1343
1344         PR libstdc++/108846
1345         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
1346         Add __assign_one static member function.
1347         (__copy_move<true, false, RA>): Likewise.
1348         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
1349         value.
1350         (__copy_move_backward<IsMove, true, RA>): Likewise.
1351         * testsuite/25_algorithms/copy/108846.cc: New test.
1352         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
1353         * testsuite/25_algorithms/copy_n/108846.cc: New test.
1354         * testsuite/25_algorithms/move/108846.cc: New test.
1355         * testsuite/25_algorithms/move_backward/108846.cc: New test.
1356
1357 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1358
1359         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
1360         attributes.
1361
1362 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
1365         caveat to comment.
1366         * include/bits/basic_string.h (resize_and_overwrite): Add
1367         doxygen comment.
1368
1369 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1370
1371         * include/experimental/bits/simd.h: Line breaks and indenting
1372         fixed to follow the libstdc++ standard.
1373         * include/experimental/bits/simd_builtin.h: Likewise.
1374         * include/experimental/bits/simd_fixed_size.h: Likewise.
1375         * include/experimental/bits/simd_neon.h: Likewise.
1376         * include/experimental/bits/simd_ppc.h: Likewise.
1377         * include/experimental/bits/simd_scalar.h: Likewise.
1378         * include/experimental/bits/simd_x86.h: Likewise.
1379
1380 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1381
1382         PR libstdc++/108030
1383         * include/experimental/bits/simd_fixed_size.h
1384         (_SimdImplFixedSize::_S_broadcast): Replace inline with
1385         _GLIBCXX_SIMD_INTRINSIC.
1386         (_SimdImplFixedSize::_S_generate): Likewise.
1387         (_SimdImplFixedSize::_S_load): Likewise.
1388         (_SimdImplFixedSize::_S_masked_load): Likewise.
1389         (_SimdImplFixedSize::_S_store): Likewise.
1390         (_SimdImplFixedSize::_S_masked_store): Likewise.
1391         (_SimdImplFixedSize::_S_min): Likewise.
1392         (_SimdImplFixedSize::_S_max): Likewise.
1393         (_SimdImplFixedSize::_S_complement): Likewise.
1394         (_SimdImplFixedSize::_S_unary_minus): Likewise.
1395         (_SimdImplFixedSize::_S_plus): Likewise.
1396         (_SimdImplFixedSize::_S_minus): Likewise.
1397         (_SimdImplFixedSize::_S_multiplies): Likewise.
1398         (_SimdImplFixedSize::_S_divides): Likewise.
1399         (_SimdImplFixedSize::_S_modulus): Likewise.
1400         (_SimdImplFixedSize::_S_bit_and): Likewise.
1401         (_SimdImplFixedSize::_S_bit_or): Likewise.
1402         (_SimdImplFixedSize::_S_bit_xor): Likewise.
1403         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
1404         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
1405         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
1406         explicit about not always-inline, yet).
1407         (_SimdImplFixedSize::_S_isinf): Likewise.
1408         (_SimdImplFixedSize::_S_isfinite): Likewise.
1409         (_SimdImplFixedSize::_S_isnan): Likewise.
1410         (_SimdImplFixedSize::_S_isnormal): Likewise.
1411         (_SimdImplFixedSize::_S_signbit): Likewise.
1412
1413 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1414
1415         PR libstdc++/108856
1416         * include/experimental/bits/simd_builtin.h
1417         (_SimdImplBuiltin::_S_masked_unary): More efficient
1418         implementation of masked inc-/decrement for integers and floats
1419         without AVX2.
1420         * include/experimental/bits/simd_x86.h
1421         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
1422         builtins for masked inc-/decrement.
1423
1424 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1425
1426         * include/experimental/executor (executor): Constrain template
1427         constructors.
1428
1429 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1430
1431         * include/experimental/internet (basic_endpoint): Add missing
1432         constexpr to comparison operators.
1433         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
1434
1435 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1436
1437         * include/experimental/internet (network_v4::netmask()): Avoid
1438         undefined shift.
1439         (network_v4::broadcast()): Optimize and fix for targets with
1440         uint_least32_t wider than 32 bits.
1441         (network_v4::to_string(const Allocator&)): Fix for custom
1442         allocators and optimize using to_chars.
1443         (operator==(const network_v4&, const network_v4&)): Add missing
1444         constexpr.
1445         (operator==(const network_v6&, const network_v6&)): Likewise.
1446         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
1447         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
1448
1449 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1450
1451         * include/experimental/internet (address_4(const bytes_type&)):
1452         Use __builtin_bit_cast if available, otherwise convert to
1453         network byte order.
1454         (address_v4::to_bytes()): Likewise, but convert from network
1455         byte order.
1456         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
1457         incorrect tests. Check for constexpr too.
1458         * testsuite/experimental/net/internet/address/v4/creation.cc:
1459         Likewise.
1460         * testsuite/experimental/net/internet/address/v4/members.cc:
1461         Check that bytes_type is a standard-layout type.
1462
1463 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1464
1465         * include/experimental/internet (address_v4::to_string):
1466         Optimize.
1467         * testsuite/experimental/net/internet/address/v4/members.cc:
1468         Check more addresses.
1469
1470 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1471
1472         * include/ext/aligned_buffer.h (__aligned_buffer): Add
1473         diagnostic pragmas.
1474
1475 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1476
1477         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
1478         before dg-do.
1479
1480 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1481
1482         * testsuite/experimental/simd/tests/reductions.cc: Introduce
1483         max_distance as the type-dependent max error.
1484
1485 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1486
1487         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
1488         int. The actual range of these indexes is very small.
1489
1490 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1491
1492         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
1493         (_S_bit_shift_right): Declare constexpr. The implementation was
1494         already expecting constexpr evaluation.
1495
1496 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1497
1498         PR libstdc++/108030
1499         * include/experimental/bits/simd_detail.h
1500         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
1501         __clang__.
1502
1503 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1504
1505         PR libstdc++/108030
1506         * include/experimental/bits/simd.h (__vector_broadcast):
1507         Implement via __vector_broadcast_impl instead of
1508         __call_with_n_evaluations + 2 lambdas.
1509         (__vector_broadcast_impl): New.
1510
1511 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
1512
1513         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
1514         Avoid destruction of the mutex pool.
1515
1516 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
1517
1518         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
1519         on vxworks.
1520         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
1521         Likewise.
1522
1523 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
1524
1525         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
1526         kernel mode.
1527
1528 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
1529
1530         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1531
1532 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
1533
1534         * include/experimental/bits/simd.h (__extract_part, split):
1535         Use reserved name for template parameter.
1536
1537 2023-02-20  Andreas Schwab  <schwab@suse.de>
1538
1539         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1540
1541 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
1542
1543         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
1544         * doc/html/faq.html: Regenerate.
1545
1546 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1547
1548         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
1549         between scalars requires the __bit_cast helper function instead
1550         of simd_bit_cast.
1551
1552 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1553
1554         * include/experimental/bits/simd_x86.h
1555         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
1556         (_SimdImplX86::_S_less_equal): Do not call
1557         __builtin_is_constant_evaluated in constexpr-if.
1558
1559 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1560
1561         * testsuite/experimental/simd/tests/bits/verify.h
1562         (verify::verify): Use %zx for size_t in format string.
1563
1564 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1565
1566         * testsuite/experimental/simd/generate_makefile.sh: Generate and
1567         pre-compile pch.h, which includes all headers that do not depend
1568         on command-line macros.
1569         * testsuite/experimental/simd/tests/bits/main.h: New file.
1570         (iterate_abis, main): Moved from verify.h.
1571         * testsuite/experimental/simd/tests/bits/verify.h
1572         (iterate_abis, main): Moved to main.h.
1573         * testsuite/experimental/simd/tests/bits/conversions.h: Add
1574         include guard.
1575         (genHalfBits): Simplify.
1576         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
1577         guard.
1578         (make_alternating_mask): Moved from mask_loadstore.
1579         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
1580         include guard.
1581         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
1582         * testsuite/experimental/simd/tests/mask_loadstore.cc
1583         (make_mask, make_alternating_mask): Removed.
1584         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
1585         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
1586         Removed.
1587         * testsuite/experimental/simd/tests/abs.cc: Only include
1588         bits/main.h.
1589         Ditto.
1590         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
1591         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
1592         * testsuite/experimental/simd/tests/casts.cc: Ditto.
1593         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
1594         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
1595         * testsuite/experimental/simd/tests/generator.cc: Ditto.
1596         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
1597         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
1598         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
1599         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
1600         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
1601         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
1602         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
1603         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
1604         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
1605         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
1606         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
1607         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
1608         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
1609         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
1610         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
1611         * testsuite/experimental/simd/tests/simd.cc: Ditto.
1612         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
1613         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
1614         * testsuite/experimental/simd/tests/splits.cc: Ditto.
1615         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
1616         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
1617         * testsuite/experimental/simd/tests/where.cc: Ditto.
1618
1619 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1620
1621         * testsuite/experimental/simd/README.md: Document the timeout
1622         and timeout-factor directives. Minor typo fixed.
1623
1624 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1625
1626         PR libstdc++/108030
1627         * include/experimental/bits/simd_detail.h: Define
1628         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
1629         * include/experimental/bits/simd.h: Annotate lambdas with
1630         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
1631         * include/experimental/bits/simd_builtin.h: Ditto.
1632         * include/experimental/bits/simd_converter.h: Ditto.
1633         * include/experimental/bits/simd_fixed_size.h: Ditto.
1634         * include/experimental/bits/simd_math.h: Ditto.
1635         * include/experimental/bits/simd_neon.h: Ditto.
1636         * include/experimental/bits/simd_x86.h: Ditto.
1637
1638 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
1639
1640         * include/experimental/bits/simd.h
1641         (_SimdWrapper::_M_is_constprop_none_of)
1642         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
1643         computed result still satisfies __builtin_constant_p.
1644
1645 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1646
1647         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
1648         ellipsis character.
1649
1650 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1651
1652         * include/Makefile.am: Add new header.
1653         * include/Makefile.in: Regenerate.
1654         * include/experimental/synchronized_value: New file.
1655         * testsuite/experimental/synchronized_value.cc: New test.
1656
1657 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1658
1659         * include/experimental/optional: Fix header name in comment.
1660
1661 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1662
1663         * include/std/format (__format::_Arg_store): New class template.
1664         (basic_format_args): Remove nested type _Store and add deduction
1665         guide from _Arg_store.
1666         (basic_format_arg, make_format_args): Adjust.
1667         * testsuite/std/format/arguments/lwg3810.cc: New test.
1668
1669 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1670
1671         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
1672         constraints to constructors and add deleted overloads for the
1673         dangling cases, as per P2255R2.
1674         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
1675         make dangling cases ill-formed.
1676         * testsuite/20_util/pair/dangling_ref.cc: New test.
1677
1678 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1679
1680         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
1681
1682 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1683
1684         * include/ext/throw_allocator.h: Use reserved names for
1685         parameters.
1686
1687 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1688
1689         * testsuite/17_intro/names_pstl.cc: Add space after effective
1690         target name.
1691
1692 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1693
1694         * include/pstl/algorithm_fwd.h (__pattern_search_n)
1695         (__brick_unique_copy, __brick_adjacent_find)
1696         (__brick_generate_n, __pattern_generate_n): Use reserved names
1697         for parameters.
1698         * include/pstl/algorithm_impl.h (__brick_unique_copy)
1699         (__pattern_reverse, __brick_generate_n): Likewise.
1700         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
1701         (__prefer_parallel_tag): Likewise.
1702         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
1703         * include/pstl/glue_numeric_defs.h (adjacent_difference):
1704         Likewise.
1705         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
1706         Likewise.
1707         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
1708         * include/pstl/unseq_backend_simd.h (_Combiner)
1709         (__simd_min_element, __simd_minmax_element): Likewise.
1710         * testsuite/17_intro/names_pstl.cc: New test.
1711
1712 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
1713
1714         * include/bits/fs_ops.h (create_directory): Use reserved name
1715         for parameter.
1716         * include/bits/ranges_algo.h (__contains_subrange_fn):
1717         Likewise.
1718         * include/bits/regex_automaton.h (_State_base::_M_print):
1719         Likewise.
1720         * include/bits/regex_automaton.tcc(_State_base::_M_print):
1721         Likewise.
1722         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
1723         * include/experimental/bits/fs_ops.h (create_directory):
1724         Likewise.
1725         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
1726         (recursive_timed_mutex:_M_clocklock): Likewise.
1727         * include/std/tuple (basic_common_reference): Likewise.
1728         * libsupc++/cxxabi_init_exception.h
1729         (__cxa_init_primary_exception): Likewise.
1730         * testsuite/17_intro/names.cc: Add checks.
1731
1732 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
1733
1734         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
1735         to www.open-std.org and https.
1736         * doc/html/manual/status.html: Regenerate.
1737
1738 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
1739
1740         PR libstdc++/103934
1741         * include/std/atomic (atomic_flag_wait): Add.
1742         (atomic_flag_wait_explicit): Add.
1743         (atomic_flag_notify): Add.
1744         (atomic_flag_notify_explicit): Add.
1745         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
1746         Add test case to cover missing atomic_flag free functions.
1747
1748 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
1749
1750         PR libstdc++/103934
1751         * include/std/atomic (atomic_flag_test): Add.
1752         (atomic_flag_test_explicit): Add.
1753         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
1754         test case to cover missing atomic_flag free functions.
1755         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
1756         Likewise.
1757
1758 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
1759
1760         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
1761         "The Component Object Model" reference.
1762         * doc/html/manual/policy_data_structures.html: Regenerate.
1763
1764 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
1765
1766         * doc/xml/manual/containers.xml: Tweak a link to N1780
1767         (C++ standard).
1768         * doc/html/manual/associative.html: Regenerate.
1769
1770 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
1771
1772         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
1773         * doc/html/manual/facets.html: Regenerate.
1774
1775 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
1776
1777         * doc/xml/manual/policy_data_structures_biblio.xml: Update
1778         link to "Worst-case efficient priority queues".
1779         * doc/html/manual/policy_data_structures.html: Regenerate.
1780
1781 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
1782
1783         * doc/xml/manual/using.xml: Document newly-freestanding
1784         headers and the effect of the -ffreestanding flag.
1785         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
1786         completed.
1787         * doc/xml/manual/configure.xml: Document that hosted installs
1788         respect __STDC_HOSTED__.
1789         * doc/xml/manual/test.xml: Document how to run tests in
1790         freestanding mode.
1791         * doc/html/*: Regenerate.
1792
1793 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1794
1795         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
1796         (__find_last_if_fn): Likewise.
1797
1798 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1799
1800         * include/std/type_traits: Add diagnostic pragmas around
1801         references to deprecated std::aligned_storage and
1802         std::aligned_union traits.
1803         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
1804         Add dg-warning for et c++23.
1805         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
1806         Likewise.
1807         * testsuite/20_util/aligned_storage/value.cc: Likewise.
1808         * testsuite/20_util/aligned_union/1.cc: Likewise.
1809         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
1810         Likewise.
1811
1812 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
1813
1814         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
1815         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
1816         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
1817         * include/std/type_traits (aligned_storage, aligned_union)
1818         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
1819         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
1820         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
1821
1822 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
1823
1824         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
1825         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
1826         consistent with other 'deprecated' macros.
1827         * include/std/type_traits (is_pod, is_pod_v): Use
1828         _GLIBCXX20_DEPRECATED_SUGGEST instead.
1829
1830 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
1831
1832         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
1833         * Makefile.in: Regenerate.
1834         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
1835         There's no history to be compatible with.
1836         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
1837         source files from the build.
1838         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1839         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1840         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
1841         * src/Makefile.in: Regenerate.
1842         * src/c++11/Makefile.in: Regenerate.
1843         * src/c++17/Makefile.in: Regenerate.
1844         * src/c++20/Makefile.in: Regenerate.
1845         * src/c++98/Makefile.in: Regenerate.
1846
1847 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
1848
1849         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
1850         filesystem, libbacktrace and experimental.
1851         * src/Makefile.in: Regenerate.
1852
1853 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
1854
1855         PR libstdc++/108672
1856         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
1857         instead of int32_t.
1858
1859 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
1860
1861         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
1862         * doc/html/manual/documentation_hacking.html: Regenerate.
1863
1864 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
1865
1866         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
1867         storage to the move-from instance when allocators are equal.
1868         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
1869         New test case.
1870
1871 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
1872
1873         * config/os/gnu-linux/os_defines.h [!__linux__]
1874         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
1875
1876 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1877
1878         * include/bits/ranges_algo.h (__find_last_fn, find_last):
1879         Define.
1880         (__find_last_if_fn, find_last_if): Define.
1881         (__find_last_if_not_fn, find_last_if_not): Define.
1882         * testsuite/25_algorithms/find_last/1.cc: New test.
1883         * testsuite/25_algorithms/find_last_if/1.cc: New test.
1884         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
1885
1886 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1887
1888         * include/bits/ranges_algo.h (out_value_result): Define.
1889         (iota_result): Define.
1890         (__iota_fn, iota): Define.
1891         * testsuite/25_algorithms/iota/1.cc: New test.
1892
1893 2023-02-03  Patrick Palka  <ppalka@redhat.com>
1894
1895         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
1896         (__contains_subrange_fn, contains_subrange): Define.
1897         * testsuite/25_algorithms/contains/1.cc: New test.
1898         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
1899
1900 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1901
1902         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
1903         * doc/html/manual/abi.html: Regenerate.
1904
1905 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1906
1907         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
1908         errc::function_not_supported instead of errc::not_supported.
1909
1910 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1911
1912         * include/std/sstream  (basic_stringbuf::view): Define for old
1913         std::string ABI.
1914         (basic_istringstream::view, basic_0stringstream::view)
1915         (basic_stringstream::view): Likewise.
1916         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
1917         { dg-require-effective-target cxx11_abi }.
1918         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
1919         Likewise.
1920         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
1921         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
1922         Likewise.
1923         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
1924         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
1925         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
1926         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
1927         Likewise.
1928
1929 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1930
1931         PR libstdc++/108636
1932         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
1933         conversion operators for directory iterator comparisons with
1934         std::default_sentinel_t.
1935         * include/bits/fs_path.h (path::path(string_view, _Type))
1936         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
1937         definitions to ...
1938         * src/c++17/fs_path.cc: ... here.
1939         * testsuite/27_io/filesystem/path/108636.cc: New test.
1940
1941 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
1942
1943         * include/std/variant (variant::operator=): Implement resolution
1944         of LWG 3585.
1945         * testsuite/20_util/variant/lwg3585.cc: New test.
1946
1947 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1948
1949         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
1950         link to https.
1951         * doc/html/manual/using_exceptions.html: Regenerate.
1952
1953 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
1954
1955         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
1956         * doc/html/manual/debug.html: Regenerate.
1957
1958 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1959
1960         * src/c++11/random.cc (random_device::_M_fini): Do not try to
1961         close the file handle if the target doesn't support the
1962         /dev/random and /dev/urandom files.
1963
1964 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1965
1966         * config/os/generic/error_constants.h (errc::value_too_large)
1967         [__AVR__]: Define.
1968         * src/c++11/system_error.cc
1969         (system_category::default_error_condition) [__AVR__]: Only match
1970         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
1971         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
1972         for ENOENT etc. in switch.
1973         (fs::remove_all) [__AVR__]: Likewise.
1974         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
1975         close etc.
1976
1977 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
1978
1979         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
1980         embed_zoneinfo=no
1981         * configure: Regenerate.
1982
1983 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
1984
1985         PR testsuite/108632
1986         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
1987         struct at end of S0.
1988
1989 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
1990
1991         * doc/xml/manual/shared_ptr.xml: Move links from both
1992         http://open-std.org and http://www.open-std.org to
1993         https://www.open-std.org.
1994         * doc/html/manual/memory.html: Regenerate.
1995
1996 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
1997
1998         * doc/xml/manual/appendix_contributing.xml: Adjust link to
1999         ISO C++ standard at ANSI.
2000         Move link to www.open-std.org to https.
2001         * doc/html/manual/appendix_contributing.html: Regenerate.
2002
2003 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2004
2005         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
2006         links to https.
2007         * doc/html/manual/documentation_hacking.html: Regenerate.
2008
2009 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2010
2011         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
2012         * doc/html/manual/abi.html: Regenerate.
2013
2014 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
2015
2016         PR libstdc++/108568
2017         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
2018         include features.h if present and then check __GLIBC__ and
2019         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
2020         __GLIBC_PREREQ which isn't defined yet.
2021
2022 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2023
2024         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
2025         string literal.
2026
2027 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2028
2029         PR libstdc++/108554
2030         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
2031
2032 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2033
2034         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
2035         rules named "+" for compatibility with older tzdata.zi files.
2036
2037 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2038
2039         PR libstdc++/108554
2040         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
2041         nonnull attribute.
2042         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
2043         attributes.
2044         * testsuite/23_containers/map/modifiers/108554.cc: New test.
2045
2046 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2047
2048         PR libstdc++/108530
2049         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
2050         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
2051
2052 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
2053
2054         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
2055         use https.
2056         * doc/html/manual/bugs.html: Regenerate.
2057
2058 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2059
2060         PR libstdc++/108530
2061         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
2062         /etc/sysconfig/clock.
2063
2064 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2065
2066         PR libstdc++/102301
2067         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
2068         std::make_reverse_iterator.
2069         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
2070         (make_from_tuple): Add static assertion from P2255 to diagnose
2071         dangling references.
2072         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
2073         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
2074
2075 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
2076
2077         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
2078         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
2079         (_Safe_iterator::operator++(int)): Use latter.
2080         (_Safe_iterator::operator--(int)): Likewise.
2081         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
2082         check.
2083         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
2084         New.
2085         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
2086         (_Safe_local_iterator::operator++(int)): Use latter.
2087         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
2088         entry associated to the array entry.
2089
2090 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2091
2092         * include/bits/fs_path.h (u8path): Add deprecated attribute.
2093         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
2094         -Wno-deprecated-declarations for C++20 and later.
2095         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
2096         Likewise.
2097         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
2098         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
2099         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
2100
2101 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2102
2103         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
2104         Always call _M_fini and _M_getentropy.
2105
2106 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
2107
2108         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
2109         to www.open-std.org to use https.
2110         (COM: Component Model Object Technologies): Rename from...
2111         (The Component Object Model): ...to.
2112         * doc/html/manual/policy_data_structures.html: Regenerate.
2113
2114 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
2115
2116         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
2117         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
2118         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
2119
2120 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
2121
2122         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
2123         of $host. Fix check for file being present during native build.
2124         * configure: Regenerate.
2125
2126 2023-01-17  Martin Liska  <mliska@suse.cz>
2127
2128         * src/libbacktrace/Makefile.in: Regenerate.
2129
2130 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2131
2132         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
2133
2134 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2135
2136         PR libstdc++/108413
2137         * include/c_compatibility/stdatomic.h: Change copyright line to
2138         be consistent with other headers contributed under DCO terms.
2139         * include/std/expected: Add full stop to copyright line.
2140         * src/c++20/tzdb.cc: Likewise.
2141
2142 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
2143
2144         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
2145         https.
2146         * doc/xml/manual/status_cxx2017.xml: Ditto.
2147         * doc/xml/manual/status_cxx2020.xml: Ditto.
2148         * doc/xml/manual/status_cxx2023.xml: Ditto.
2149         * doc/html/manual/status.html: Regenerate.
2150
2151 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2152
2153         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
2154         and fail gracefully if defining the weak symbol doesn't work.
2155
2156 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
2157
2158         PR libstdc++/108288
2159         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
2160         fix to other iterator category.
2161         (_Safe_iterator<>::operator--(int)): Likewise.
2162         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
2163         Fix deadlock.
2164         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
2165         (invalid_local_iterator_post_increment): New.
2166         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
2167         New test.
2168         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
2169         New test.
2170
2171 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2172
2173         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
2174         dg-options.
2175
2176 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2177
2178         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
2179
2180 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2181
2182         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
2183         windows.h. Add pecoff as FORMAT_FILE.
2184         * config.h.in: Regenerate.
2185         * configure: Regenerate.
2186         * src/libbacktrace/Makefile.am: Regenerate.
2187         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
2188
2189 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2190
2191         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
2192         raw __name if __cxa_demangle could not demangle it.
2193
2194 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2195
2196         PR libstdc++/108409
2197         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
2198         variable.
2199
2200 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2201
2202         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
2203         loading tzdb.
2204         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
2205         effective target.
2206         * testsuite/std/time/tzdb_list/1.cc: Likewise.
2207
2208 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2209
2210         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
2211         --with-libstdcxx-zoneinfo-dir configure option with
2212         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
2213         a directory.
2214         * config.h.in: Regenerate.
2215         * configure: Regenerate.
2216         * doc/xml/manual/configure.xml: Document configure option.
2217         * doc/html/manual/configure.html: Regenerate.
2218         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
2219         * src/c++20/Makefile.in: Regenerate.
2220         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
2221         null pointer if no directory is configured.
2222         (zoneinfo_dir): Replace with ...
2223         (zoneinfo_file): New function.
2224         (tzdata_stream): New istream class.
2225         (remote_version, reload_tzdb): Use tzdata_stream.
2226         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
2227         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
2228         tzdata.zi file in default location.
2229         * src/c++20/tzdata.zi: New file.
2230
2231 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2232
2233         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
2234         * testsuite/std/time/month_day/io.cc: New test.
2235         * testsuite/std/time/month_day_last/io.cc: New test.
2236         * testsuite/std/time/month_weekday/io.cc: New test.
2237         * testsuite/std/time/month_weekday_last/io.cc: New test.
2238         * testsuite/std/time/weekday_indexed/io.cc: New test.
2239         * testsuite/std/time/weekday_last/io.cc: New test.
2240         * testsuite/std/time/year_month/io.cc: New test.
2241         * testsuite/std/time/year_month_day_last/io.cc: New test.
2242         * testsuite/std/time/year_month_weekday/io.cc: New test.
2243         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
2244
2245 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
2246
2247         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
2248         specifications.
2249         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
2250         export.
2251
2252 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2253
2254         * include/bits/std_mutex.h: Include <errno.h>.
2255
2256 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
2257
2258         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
2259         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
2260         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
2261         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
2262         std::make_unique with a freestanding-compatible wrapper around
2263         unique_ptr.
2264         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
2265         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
2266         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
2267         Ditto.
2268         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
2269         of __cpp_lib_ranges in !HOSTED.
2270
2271 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
2272
2273         * include/Makefile.am: Install bits/char_traits.h,
2274         std/string_view
2275         * include/Makefile.in: Regenerate.
2276         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
2277         mbstate-only bits behind appropriate #ifs.
2278         * include/std/string_view: Gate <iostream> functionality behind
2279         HOSTED.
2280         * include/std/version: Enable __cpp_lib_constexpr_string_view
2281         and __cpp_lib_starts_ends_with in !HOSTED.
2282         * include/std/ranges: Re-enable __is_basic_string_view on
2283         freestanding, include <string_view> directly.
2284         * include/precompiled/stdc++.h: Include <string_view> when
2285         !HOSTED too.
2286         * testsuite/20_util/function_objects/searchers.cc: Skip testing
2287         boyer_moore searchers on freestanding
2288         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
2289         <string>-related tests behind __STDC_HOSTED__.
2290         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
2291         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
2292         unused <stdexcept> include.
2293         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
2294         unused <vector> include.
2295         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
2296         Guard <string> related testing behind __STDC_HOSTED__.
2297         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
2298         Guard <stdexcept> related tests behind __STDC_HOSTED__.
2299         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
2300         Ditto.
2301         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
2302         Guard <stdexcept> tests behind __STDC_HOSTED__.
2303         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
2304         Enable test on freestanding, guard <stdexcept> bits behind
2305         __STDC_HOSTED__.
2306         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
2307         Guard <stdexcept> bits behind __STDC_HOSTED__.
2308         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
2309         Ditto.
2310
2311 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
2312
2313         PR libstdc++/86419
2314         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
2315         errors in incomplete multibyte sequences.
2316         (utf16_in): Remove surrogates parameter. Fix conditions for
2317         returning partial.
2318         (utf16_out): Fix condition for returning partial.
2319         (ucs2_in): Do not pass surrogates argument to utf16_in.
2320         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
2321         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
2322         tests.
2323         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
2324         test.
2325
2326 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2327
2328         PR libstdc++/108331
2329         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
2330         __GTHREAD_LEGACY_MUTEX_T if defined.
2331
2332 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2333
2334         PR libstdc++/108327
2335         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
2336         Export __try_use_facet specializations for facets in namespace
2337         __gnu_cxx_ldbl128.
2338         * config/os/gnu-linux/ldbl-ieee128-extra.ver
2339         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
2340         __gnu_cxx_ieee128.
2341         * testsuite/util/testsuite_abi.cc: Add to lists of known and
2342         latest versions.
2343
2344 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2345
2346         * include/bits/std_mutex.h: Remove <system_error> include.
2347         * include/std/condition_variable: Add <bits/error_constants.h>
2348         include.
2349         * include/std/mutex: Likewise.
2350         * include/std/shared_mutex: Likewise.
2351
2352 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2353
2354         PR libstdc++/77691
2355         * include/experimental/memory_resource
2356         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
2357         (do_allocate, do_deallocate): Check it.
2358         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2359         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
2360
2361 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2362
2363         * doc/xml/manual/abi.xml: Add latest library versions.
2364         * doc/html/manual/abi.html: Regenerate.
2365
2366 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
2367
2368         PR libstdc++/107189
2369         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
2370         unused _Alloc_node instance.
2371
2372 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2373
2374         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
2375         Define as unsigned long if always lock-free, and unsigned int
2376         otherwise.
2377
2378 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2379
2380         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
2381         __catch macros for exception handling.
2382
2383 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2384
2385         PR libstdc++/108221
2386         * include/bits/stl_algobase.h (__lg): Replace six overloads with
2387         a single function template for all integer types.
2388         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
2389         arithmetic results back to _Distance.
2390
2391 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2392
2393         PR libstdc++/108221
2394         * include/std/span (span::span()): Un-simplify constraint to
2395         work for size_t of lesser rank than int.
2396
2397 2023-01-07  LIU Hao  <lh_mouse@126.com>
2398
2399         PR middle-end/108300
2400         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
2401         <windows.h>.
2402         * src/c++11/thread.cc: Likewise.
2403         * src/c++17/fs_ops.cc: Likewise.
2404         * src/filesystem/ops.cc: Likewise.
2405
2406 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2407
2408         PR libstdc++/108228
2409         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
2410
2411 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2412
2413         PR libstdc++/108235
2414         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
2415         template and partial specialization for synchronizing access to
2416         time_zone::_Impl::infos.
2417         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
2418         rules_counter.
2419
2420 2023-01-06  Patrick Palka  <ppalka@redhat.com>
2421
2422         PR libstdc++/108260
2423         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
2424         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
2425         (__cpp_lib_ranges_chunk): Likewise.
2426         (__cpp_lib_ranges_slide): Likewise.
2427         (__cpp_lib_ranges_chunk_by): Likewise.
2428         (__cpp_lib_ranges_join_with): Likewise.
2429         (__cpp_lib_ranges_repeat): Likewise.
2430         (__cpp_lib_ranges_stride): Likewise.
2431         (__cpp_lib_ranges_cartesian_product): Likewise.
2432         (__cpp_lib_ranges_as_rvalue): Likewise.
2433         * include/std/version: Ditto.
2434         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
2435         feature-test macro.
2436         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
2437         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
2438         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
2439         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
2440         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
2441         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
2442         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
2443         * testsuite/std/ranges/repeat/1.cc: Likewise.
2444         * testsuite/std/ranges/zip/1.cc: Likewise.
2445         * testsuite/std/ranges/version_c++23.cc: New test.
2446
2447 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2448
2449         PR libstdc++/108214
2450         * include/std/bitset (operator>>): Use alloca in the right
2451         scope, not in a constructor.
2452         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
2453
2454 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2455
2456         PR libstdc++/108221
2457         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
2458         Disable visiting floating-point types.
2459
2460 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2461
2462         PR libstdc++/108288
2463         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
2464         (_Safe_iterator::operator--(int)): Do not hold lock around
2465         construction of return value.
2466
2467 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
2468
2469         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
2470         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
2471         lock release.  Revise loop.
2472         (__atomic_add): Likewise.
2473
2474 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2475
2476         PR libstdc++/108212
2477         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
2478         variable.
2479         (StdChronoTimePointPrinter::to_string): Use it.
2480
2481 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2482
2483         PR libstdc++/108290
2484         * include/std/functional (_Bind_front): Add no_unique_address
2485         attribute to data members.
2486         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
2487         size of call wrappers with empty types for targets and bound
2488         arguments.
2489
2490 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2491
2492         PR libstdc++/108211
2493         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
2494         using only last component of the name.
2495
2496 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2497
2498         PR libstdc++/108228
2499         PR libstdc++/108235
2500         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
2501         the latest symbol version.
2502         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
2503         atomic<_Node*> is not always lock free.
2504         (USE_ATOMIC_LIST_HEAD): New macro.
2505         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
2506         definition of weak symbol.
2507         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
2508         (tzdb_list::_Node::_S_list_head): New function for accessing
2509         list head efficiently.
2510         (tzdb_list::_Node::_S_cache_list_head): New function for
2511         updating _S_list_head.
2512
2513 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2514
2515         PR libstdc++/108265
2516         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
2517         duration rep is unsigned.
2518         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
2519
2520 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
2521
2522         PR libstdc++/108228
2523         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
2524         Add __gnu_cxx::zoneinfo_dir_override().
2525
2526 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
2527
2528         PR libstdc++/108258
2529         * include/std/array (__array_traits<T, 0>::operator T*()): Add
2530         constexpr.
2531         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
2532         std::array<T, 0>::data().
2533
2534 \f
2535 Copyright (C) 2023 Free Software Foundation, Inc.
2536
2537 Copying and distribution of this file, with or without modification,
2538 are permitted in any medium without royalty provided the copyright
2539 notice and this notice are preserved.