libstdc++-v3/ChangeLog

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