libstdc++-v3/ChangeLog

   1 2023-06-10  Hans-Peter Nilsson  <hp@axis.com>
   2
   3         * testsuite/27_io/basic_istream/ignore/wchar_t/94749.cc (main)
   4         [! SIMULATOR_TEST]: Also exclude running test05.
   5         * testsuite/27_io/basic_istream/ignore/char/94749.cc: Ditto.
   6
   7 2023-06-09  Ken Matsui  <kmatsui@cs.washington.edu>
   8
   9         * include/std/type_traits: Use using instead of typedef
  10
  11 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  12
  13         PR libstdc++/110077
  14         * src/c++17/floating_from_chars.cc (from_chars) <_Float128>:
  15         Only define if _Float128 and long double have different
  16         representations.
  17
  18 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  19
  20         PR libstdc++/100285
  21         * include/experimental/internet [IPPROTO_TCP || IPPROTO_UDP]
  22         (basic_endpoint, basic_resolver_entry, resolver_base)
  23         (basic_resolver_results, basic_resolver): Only define if the tcp
  24         or udp protocols will be defined.
  25
  26 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  27
  28         * acinclude.m4 (libtool_VERSION): Update to 6.0.33.
  29         * configure: Regenerate.
  30         * doc/xml/manual/abi.xml: Add libstdc++.so.6.0.33.
  31         * doc/html/manual/abi.html: Regenerate.
  32
  33 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  34
  35         PR libstdc++/110149
  36         * include/std/format (formatter<const void*, charT>::parse):
  37         Only alow 0 and P for C++26 and non-strict modes.
  38         (formatter<const void*, charT>::format): Use toupper for P
  39         type, and insert zero-fill characters for 0 option.
  40         * testsuite/std/format/functions/format.cc: Check pointer
  41         formatting. Only check P2510R3 extensions conditionally.
  42         * testsuite/std/format/parse_ctx.cc: Only check P2510R3
  43         extensions conditionally.
  44
  45 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  46
  47         PR libstdc++/110167
  48         * include/std/array (to_array): Initialize arrays of trivial
  49         types using memcpy. For non-trivial types, use lambda
  50         expressions instead of a separate helper function.
  51         (__to_array): Remove.
  52         * testsuite/23_containers/array/creation/110167.cc: New test.
  53
  54 2023-06-09  Jonathan Wakely  <jwakely@redhat.com>
  55
  56         * testsuite/23_containers/deque/modifiers/emplace/52799.cc:
  57         Removed.
  58         * testsuite/23_containers/deque/modifiers/emplace/const_iterator.cc:
  59         Removed.
  60         * testsuite/23_containers/list/modifiers/emplace/52799.cc:
  61         Removed.
  62         * testsuite/23_containers/list/modifiers/emplace/const_iterator.cc:
  63         Removed.
  64         * testsuite/23_containers/vector/modifiers/emplace/52799.cc:
  65         Removed.
  66         * testsuite/23_containers/vector/modifiers/emplace/const_iterator.cc:
  67         Removed.
  68         * testsuite/23_containers/deque/modifiers/emplace/1.cc: New
  69         test.
  70         * testsuite/23_containers/list/modifiers/emplace/1.cc: New
  71         test.
  72         * testsuite/23_containers/vector/modifiers/emplace/1.cc: New
  73         test.
  74
  75 2023-06-07  Jakub Jelinek  <jakub@redhat.com>
  76
  77         PR libstdc++/110145
  78         * testsuite/20_util/to_chars/double.cc: Include <cfloat>.
  79         (double_to_chars_test_cases,
  80         double_scientific_precision_to_chars_test_cases_2,
  81         double_fixed_precision_to_chars_test_cases_2): #if out 1e126, 4.91e-6
  82         and 5.547e-6 tests if FLT_EVAL_METHOD is negative or larger than 1.
  83         Add unconditional tests with corresponding double constants
  84         0x1.7a2ecc414a03fp+418, 0x1.4981285e98e79p-18 and
  85         0x1.7440bbff418b9p-18.
  86
  87 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
  88
  89         * testsuite/util/testsuite_abi.cc (check_version): Re-add
  90         CXXABI_1.3.14.
  91
  92 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
  93
  94         * testsuite/18_support/nested_exception/rethrow_if_nested-term.cc:
  95         Require effective target exceptions_enabled instead of using
  96         dg-skip-if.
  97         * testsuite/23_containers/vector/capacity/constexpr.cc: Expect
  98         shrink_to_fit() to be a no-op without exceptions enabled.
  99         * testsuite/23_containers/vector/capacity/shrink_to_fit.cc:
 100         Likewise.
 101         * testsuite/ext/bitmap_allocator/check_allocate_max_size.cc:
 102         Require effective target exceptions_enabled.
 103         * testsuite/ext/malloc_allocator/check_allocate_max_size.cc:
 104         Likewise.
 105         * testsuite/ext/mt_allocator/check_allocate_max_size.cc:
 106         Likewise.
 107         * testsuite/ext/new_allocator/check_allocate_max_size.cc:
 108         Likewise.
 109         * testsuite/ext/pool_allocator/check_allocate_max_size.cc:
 110         Likewise.
 111         * testsuite/ext/throw_allocator/check_allocate_max_size.cc:
 112         Likewise.
 113
 114 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 115
 116         * testsuite/20_util/duration/cons/2.cc: Use values that aren't
 117         affected by rounding.
 118         * testsuite/20_util/from_chars/5.cc: Cast arithmetic result to
 119         double before comparing for equality.
 120         * testsuite/20_util/from_chars/6.cc: Likewise.
 121         * testsuite/20_util/variant/86874.cc: Use values that aren't
 122         affected by rounding.
 123         * testsuite/25_algorithms/lower_bound/partitioned.cc: Compare to
 124         original value instead of to floating-point-literal.
 125         * testsuite/26_numerics/random/discrete_distribution/cons/range.cc:
 126         Cast arithmetic result to double before comparing for equality.
 127         * testsuite/26_numerics/random/piecewise_constant_distribution/cons/range.cc:
 128         Likewise.
 129         * testsuite/26_numerics/random/piecewise_linear_distribution/cons/range.cc:
 130         Likewise.
 131         * testsuite/26_numerics/valarray/transcend.cc (eq): Check that
 132         the absolute difference is less than 0.01 instead of comparing
 133         to two decimal places.
 134         * testsuite/27_io/basic_istream/extractors_arithmetic/char/01.cc:
 135         Cast arithmetic result to double before comparing for equality.
 136         * testsuite/27_io/basic_istream/extractors_arithmetic/char/09.cc:
 137         Likewise.
 138         * testsuite/27_io/basic_istream/extractors_arithmetic/char/10.cc:
 139         Likewise.
 140         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/01.cc:
 141         Likewise.
 142         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/09.cc:
 143         Likewise.
 144         * testsuite/27_io/basic_istream/extractors_arithmetic/wchar_t/10.cc:
 145         Likewise.
 146         * testsuite/ext/random/hoyt_distribution/cons/parms.cc: Likewise.
 147
 148 2023-06-07  Jonathan Wakely  <jwakely@redhat.com>
 149
 150         Revert:
 151         2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 152
 153         * configure.ac: Use AS_IF.
 154         * configure: Regenerate.
 155
 156 2023-06-07  Thomas Schwinge  <thomas@codesourcery.com>
 157
 158         * testsuite/lib/prune.exp (libstdc++-dg-prune): Support
 159         'UNSUPPORTED: [...]: exception handling disabled'.
 160
 161 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 162
 163         * testsuite/util/testsuite_abi.cc (check_version): Add
 164         CXXABI_1.3.15 symver and make it the latestp. Remove
 165         GLIBCXX_IEEE128_3.4.31 and GLIBCXX_LDBL_3.4.31 from latestp.
 166
 167 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 168             Jakub Jelinek  <jakub@redhat.com>
 169
 170         PR libstdc++/104772
 171         * include/std/limits: (numeric_limits<__float128>): Define
 172         for __STRICT_ANSI__ as well.
 173         * testsuite/18_support/numeric_limits/128bit.cc: Remove
 174         check for __STRICT_ANSI__.
 175
 176 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 177
 178         * configure.ac: Use AS_IF.
 179         * configure: Regenerate.
 180
 181 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 182
 183         PR libstdc++/109822
 184         * include/experimental/bits/simd_builtin.h (_S_store): Rewrite
 185         to avoid casts to other vector types. Implement store as
 186         succession of power-of-2 sized memcpy to avoid PR90424.
 187
 188 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 189
 190         PR libstdc++/110054
 191         * include/experimental/bits/simd_builtin.h (_S_masked_store):
 192         Call into deduced ABI's SimdImpl after conversion.
 193         * include/experimental/bits/simd_x86.h (_S_masked_store_nocvt):
 194         Don't use _mm_maskmoveu_si128. Use the generic fall-back
 195         implementation. Also fix masked stores without SSE2, which
 196         were not doing anything before.
 197
 198 2023-06-06  Matthias Kretz  <m.kretz@gsi.de>
 199
 200         * include/experimental/bits/simd.h (__bit_cast): Use
 201         __gnu__::__vector_size__ instead of gnu::vector_size.
 202
 203 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 204
 205         PR libstdc++/110139
 206         * include/std/array (__array_traits<T, 0>::operator T*()): Make
 207         conversion operator explicit.
 208         (array::front): Use size_type as subscript operand.
 209         (array::data): Use static_cast to make conversion explicit.
 210         * testsuite/23_containers/array/element_access/110139.cc: New
 211         test.
 212
 213 2023-06-06  Joseph Faulls  <Joseph.Faulls@imgtec.com>
 214
 215         * include/bits/locale_classes.tcc: Remove check for
 216         codecvt<char8_t, char, mbstate_t> facet.
 217
 218 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 219
 220         * src/filesystem/ops-common.h (do_copy_file) [O_CLOEXEC]: Set
 221         close-on-exec flag on file descriptors.
 222
 223 2023-06-06  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         PR libstdc++/108178
 226         * src/filesystem/ops-common.h (do_copy_file): Check for empty
 227         files by trying to read a character.
 228         * testsuite/27_io/filesystem/operations/copy_file_108178.cc:
 229         New test.
 230
 231 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
 232
 233         * acinclude.m4 (_GLIBCXX_USE_COPY_FILE_RANGE): Define.
 234         * config.h.in: Regenerate.
 235         * configure: Regenerate.
 236         * src/filesystem/ops-common.h (copy_file_copy_file_range):
 237         Define new function.
 238         (do_copy_file): Use it.
 239
 240 2023-06-06  Jannik Glückert  <jannik.glueckert@gmail.com>
 241
 242         * acinclude.m4 (_GLIBCXX_HAVE_LSEEK): Define.
 243         * config.h.in: Regenerate.
 244         * configure: Regenerate.
 245         * src/filesystem/ops-common.h (copy_file_sendfile): Define new
 246         function for sendfile logic. Loop to support large files. Skip
 247         zero-length files.
 248         (do_copy_file): Use it.
 249
 250 2023-06-04  Jason Merrill  <jason@redhat.com>
 251
 252         PR c++/97720
 253         * libsupc++/eh_call.cc (__cxa_call_terminate): Take void*.
 254         * config/abi/pre/gnu.ver: Add it.
 255
 256 2023-06-02  François Dumont  <fdumont@gcc.gnu.org>
 257
 258         * include/parallel/algobase.h: Include <parallel/search.h>.
 259
 260 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 261
 262         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc:
 263         Add const to equality operator.
 264
 265 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 266
 267         * include/std/expected (expected::and_then, expected::or_else)
 268         (expected::transform_error): Use _M_val and _M_unex instead of
 269         calling value() and error(), as per LWG 3938.
 270         (expected::transform): Likewise. Remove incorrect std::move
 271         calls from lvalue overloads.
 272         (expected<void, E>::and_then, expected<void, E>::or_else)
 273         (expected<void, E>::transform): Use _M_unex instead of calling
 274         error().
 275         * testsuite/20_util/expected/lwg3877.cc: Add checks for and_then
 276         and transform, and for std::expected<void, E>.
 277         * testsuite/20_util/expected/lwg3938.cc: New test.
 278
 279 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 280
 281         PR libstdc++/110060
 282         * include/bits/stl_vector.h (_Vector_base::_M_invariant):
 283         Remove.
 284         (vector::size, vector::capacity): Remove calls to _M_invariant.
 285         * include/bits/vector.tcc (vector::_M_fill_assign): Add
 286         optimization hint to reallocating path.
 287         (vector::_M_assign_aux(FwdIter, FwdIter, forward_iterator_tag)):
 288         Likewise.
 289         * testsuite/23_containers/vector/capacity/invariant.cc: Moved
 290         to...
 291         * testsuite/23_containers/vector/modifiers/assign/no_realloc.cc:
 292         ...here. Check assign(FwdIter, FwdIter) too.
 293         * testsuite/23_containers/vector/types/1.cc: Revert addition
 294         of -Wno-stringop-overread option.
 295
 296 2023-06-01  Jonathan Wakely  <jwakely@redhat.com>
 297
 298         * doc/xml/manual/evolution.xml: Document removal of implicit
 299         allocator rebinding extensions in strict mode and for C++20.
 300         * doc/html/*: Regenerate.
 301
 302 2023-06-01  Jason Merrill  <jason@redhat.com>
 303
 304         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Don't check
 305         handlers in the cleanup phase.
 306
 307 2023-06-01  Matthias Kretz  <m.kretz@gsi.de>
 308
 309         PR libstdc++/110050
 310         * include/experimental/bits/simd.h (__vectorized_sizeof): With
 311         __have_neon_a32 only single-precision float works (in addition
 312         to integers).
 313
 314 2023-06-01  François Dumont  <fdumont@gcc.gnu.org>
 315
 316         * include/bits/stl_algo.h
 317         (std::__search, std::search(_FwdIt1, _FwdIt1, _FwdIt2, _FwdIt2, _BinPred)): Move...
 318         * include/bits/stl_algobase.h: ...here.
 319         * include/std/functional: Replace <stl_algo.h> include by <stl_algobase.h>.
 320         * include/parallel/algo.h (std::__parallel::search<_FIt1, _FIt2, _BinaryPred>)
 321         (std::__parallel::__search_switch<_FIt1, _FIt2, _BinaryPred, _ItTag1, _ItTag2>):
 322         Move...
 323         * include/parallel/algobase.h: ...here.
 324         * include/experimental/functional: Remove <bits/stl_algo.h> and <parallel/algorithm>
 325         includes. Include <bits/stl_algobase.h>.
 326
 327 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 328
 329         PR libstdc++/109818
 330         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add separate check for
 331         float_t and double_t and define HAVE_C99_FLT_EVAL_TYPES.
 332         * config.h.in: Regenerate.
 333         * configure: Regenerate.
 334         * include/c_global/cmath (float_t, double_t): Guard using new
 335         _GLIBCXX_HAVE_C99_FLT_EVAL_TYPES macro.
 336
 337 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 338
 339         * acinclude.m4 (GLIBCXX_ENABLE_C99): Add checks for C99 math
 340         functions and define _GLIBCXX_USE_C99_MATH_FUNCS. Move checks
 341         for C99 rounding functions to here.
 342         (GLIBCXX_CHECK_C99_TR1): Remove checks for C99 rounding
 343         functions from here.
 344         * config.h.in: Regenerate.
 345         * configure: Regenerate.
 346         * include/bits/random.h: Use _GLIBCXX_USE_C99_MATH_FUNCS instead
 347         of _GLIBCXX_USE_C99_MATH_TR1.
 348         * include/bits/random.tcc: Likewise.
 349         * include/c_compatibility/math.h: Likewise.
 350         * include/c_global/cmath: Likewise.
 351         * include/ext/random: Likewise.
 352         * include/ext/random.tcc: Likewise.
 353         * include/std/complex: Likewise.
 354         * testsuite/20_util/from_chars/4.cc: Likewise.
 355         * testsuite/20_util/from_chars/8.cc: Likewise.
 356         * testsuite/26_numerics/complex/proj.cc: Likewise.
 357         * testsuite/26_numerics/headers/cmath/60401.cc: Likewise.
 358         * testsuite/26_numerics/headers/cmath/types_std_c++0x.cc:
 359         Likewise.
 360         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
 361         Likewise.
 362         * testsuite/util/testsuite_random.h: Likewise.
 363
 364 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 365
 366         * include/bits/stl_vector.h (_Vector_base::_M_invariant()): New
 367         function.
 368         (vector::size(), vector::capacity()): Call _M_invariant().
 369         * testsuite/23_containers/vector/capacity/invariant.cc: New test.
 370         * testsuite/23_containers/vector/types/1.cc: Add suppression for
 371         false positive warning (PR110060).
 372
 373 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 374
 375         PR libstdc++/109921
 376         * src/c++17/floating_from_chars.cc: Check __FLT128_MANT_DIG__ is
 377         defined before trying to use _Float128.
 378
 379 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 380
 381         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Fix for 32-bit pointers
 382         to check __INT_PTR_WIDTH__ instead of sizeof(void*).
 383         * configure: Regenerate.
 384
 385 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 386
 387         * include/bits/unique_lock.h: Include <bits/error_constants.h>
 388         here for std::errc constants.
 389         * include/std/mutex: Do not include <bits/error_constants.h> and
 390         <exception> here.
 391
 392 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 393
 394         * configure.ac: Replace use of -o operator for test.
 395         * configure: Regenerate.
 396
 397 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 398
 399         * include/std/scoped_allocator (scoped_allocator_adaptor): Add
 400         noexcept to all constructors except the default constructor.
 401         (scoped_allocator_adaptor::inner_allocator): Add noexcept.
 402         (scoped_allocator_adaptor::outer_allocator): Likewise.
 403         * testsuite/20_util/scoped_allocator/noexcept.cc: New test.
 404
 405 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 406
 407         PR libstdc++/104772
 408         * include/std/limits (numeric_limits<__float128>): Define.
 409         * testsuite/18_support/numeric_limits/128bit.cc: New test.
 410
 411 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 412
 413         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Extend logic for avr and
 414         msp430 to all 16-bit targets.
 415         * configure: Regenerate.
 416
 417 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 418
 419         PR libstdc++/109921
 420         * src/c++17/floating_from_chars.cc (USE_STRTOF128_FOR_FROM_CHARS):
 421         Only define when USE_STRTOD_FOR_FROM_CHARS is also defined.
 422         (USE_STRTOD_FOR_FROM_CHARS): Do not undefine when long double is
 423         binary64.
 424         (from_chars(const char*, const char*, double&, chars_format)):
 425         Check __LDBL_MANT_DIG__ == __DBL_MANT_DIG__ here.
 426         (from_chars(const char*, const char*, _Float128&, chars_format))
 427         Only use from_chars_strtod when USE_STRTOD_FOR_FROM_CHARS is
 428         defined, otherwise parse a long double and convert to _Float128.
 429
 430 2023-05-31  Jonathan Wakely  <jwakely@redhat.com>
 431
 432         PR libstdc++/109922
 433         * include/std/iomanip (operator>>(basic_istream&, _Setfill)):
 434         Add deprecated attribute to non-standard overload.
 435         * doc/xml/manual/evolution.xml: Document deprecation.
 436         * doc/html/*: Regenerate.
 437         * testsuite/27_io/manipulators/standard/char/1.cc: Add
 438         dg-warning for expected deprecated warning.
 439         * testsuite/27_io/manipulators/standard/char/2.cc: Likewise.
 440         * testsuite/27_io/manipulators/standard/wchar_t/1.cc: Likewise.
 441         * testsuite/27_io/manipulators/standard/wchar_t/2.cc: Likewise.
 442
 443 2023-05-30  Alexandre Oliva  <oliva@adacore.com>
 444
 445         * testsuite/20_util/from_chars/4.cc: Skip long double test06
 446         on x86_64-vxworks.
 447         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
 448         x86_64-vxworks.
 449
 450 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 451
 452         PR libstdc++/109822
 453         * include/experimental/bits/simd.h (to_native): Use int NTTP
 454         as specified in PTS2.
 455         (to_compatible): Likewise. Add missing tag to call mask
 456         generator ctor.
 457         * testsuite/experimental/simd/pr109822_cast_functions.cc: New
 458         test.
 459
 460 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 461
 462         * testsuite/experimental/simd/tests/integer_operators.cc:
 463         Compute expected value differently to avoid getting turned into
 464         a vector shift.
 465
 466 2023-05-30  Matthias Kretz  <m.kretz@gsi.de>
 467
 468         * testsuite/experimental/simd/tests/operator_cvt.cc: Make long
 469         double <-> (u)long conversion tests conditional on sizeof(long
 470         double) and sizeof(long).
 471
 472 2023-05-26  Matthias Kretz  <m.kretz@gsi.de>
 473
 474         * include/experimental/bits/simd_ppc.h (_S_bit_shift_left):
 475         Negative __y is UB, so prefer signed compare.
 476
 477 2023-05-25  Jonathan Wakely  <jwakely@redhat.com>
 478
 479         * testsuite/util/testsuite_allocator.h (PointerBase): Add
 480         relational operators.
 481
 482 2023-05-25  Alexandre Oliva  <oliva@adacore.com>
 483
 484         * testsuite/20_util/to_chars/long_double.cc: Expect execution
 485         fail on x86-vxworks.
 486
 487 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 488
 489         PR libstdc++/109949
 490         * include/experimental/bits/simd.h (__intrinsic_type): If
 491         __ALTIVEC__ is defined, map gnu::vector_size types to their
 492         corresponding __vector T types without losing unsignedness of
 493         integer types. Also prefer long long over long.
 494         * include/experimental/bits/simd_ppc.h (_S_popcount): Cast mask
 495         object to the expected unsigned vector type.
 496
 497 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 498
 499         PR libstdc++/109261
 500         * include/experimental/bits/simd.h (__intrinsic_type):
 501         Specialize __intrinsic_type<double, 8> and
 502         __intrinsic_type<double, 16> in any case, but provide the member
 503         type only with __aarch64__.
 504
 505 2023-05-24  Matthias Kretz  <m.kretz@gsi.de>
 506
 507         PR libstdc++/109261
 508         * include/experimental/bits/simd_neon.h (_S_reduce): Add
 509         constexpr and make NEON implementation conditional on
 510         not __builtin_is_constant_evaluated.
 511
 512 2023-05-23  Matthias Kretz  <m.kretz@gsi.de>
 513
 514         PR libstdc++/109261
 515         * include/experimental/bits/simd.h (_SimdWrapper::_M_set):
 516         Avoid vector builtin subscripting in constant expressions.
 517         (resizing_simd_cast): Avoid memcpy if constant_evaluated.
 518         (const_where_expression, where_expression, where)
 519         (__extract_part, simd_mask, _SimdIntOperators, simd): Add either
 520         _GLIBCXX_SIMD_CONSTEXPR (on public APIs), or constexpr (on
 521         internal APIs).
 522         * include/experimental/bits/simd_builtin.h (__vector_permute)
 523         (__vector_shuffle, __extract_part, _GnuTraits::_SimdCastType1)
 524         (_GnuTraits::_SimdCastType2, _SimdImplBuiltin)
 525         (_MaskImplBuiltin::_S_store): Add constexpr.
 526         (_CommonImplBuiltin::_S_store_bool_array)
 527         (_SimdImplBuiltin::_S_load, _SimdImplBuiltin::_S_store)
 528         (_SimdImplBuiltin::_S_reduce, _MaskImplBuiltin::_S_load): Add
 529         constant_evaluated case.
 530         * include/experimental/bits/simd_fixed_size.h
 531         (_S_masked_load): Reword comment.
 532         (__tuple_element_meta, __make_meta, _SimdTuple::_M_apply_r)
 533         (_SimdTuple::_M_subscript_read, _SimdTuple::_M_subscript_write)
 534         (__make_simd_tuple, __optimize_simd_tuple, __extract_part)
 535         (__autocvt_to_simd, _Fixed::__traits::_SimdBase)
 536         (_Fixed::__traits::_SimdCastType, _SimdImplFixedSize): Add
 537         constexpr.
 538         (_SimdTuple::operator[], _M_set): Add constexpr and add
 539         constant_evaluated case.
 540         (_MaskImplFixedSize::_S_load): Add constant_evaluated case.
 541         * include/experimental/bits/simd_scalar.h: Add constexpr.
 542         * include/experimental/bits/simd_x86.h (_CommonImplX86): Add
 543         constexpr and add constant_evaluated case.
 544         (_SimdImplX86::_S_equal_to, _S_not_equal_to, _S_less)
 545         (_S_less_equal): Value-initialize to satisfy constexpr
 546         evaluation.
 547         (_MaskImplX86::_S_load): Add constant_evaluated case.
 548         (_MaskImplX86::_S_store): Add constexpr and constant_evaluated
 549         case. Value-initialize local variables.
 550         (_MaskImplX86::_S_logical_and, _S_logical_or, _S_bit_not)
 551         (_S_bit_and, _S_bit_or, _S_bit_xor): Add constant_evaluated
 552         case.
 553         * testsuite/experimental/simd/pr109261_constexpr_simd.cc: New
 554         test.
 555
 556 2023-05-22  Matthias Kretz  <m.kretz@gsi.de>
 557
 558         * include/experimental/bits/simd_builtin.h (_S_fpclassify): Move
 559         __infn into #ifdef'ed block.
 560         * testsuite/experimental/simd/tests/fpclassify.cc: Declare
 561         constants only when used.
 562         * testsuite/experimental/simd/tests/frexp.cc: Likewise.
 563         * testsuite/experimental/simd/tests/logarithm.cc: Likewise.
 564         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc:
 565         Likewise.
 566         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 567         Move totest and expect1 into #ifdef'ed block.
 568
 569 2023-05-19  Gerald Pfeifer  <gerald@pfeifer.com>
 570
 571         * doc/xml/manual/strings.xml: Move lafstern.org reference to https.
 572         * doc/html/manual/strings.html: Regenerate.
 573
 574 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
 575
 576         PR libstdc++/109883
 577         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc: New test.
 578
 579 2023-05-17  Jakub Jelinek  <jakub@redhat.com>
 580
 581         PR libstdc++/109883
 582         * include/c_global/cmath (atan2, fmod, pow): Move
 583         __gnu_cxx::__promote_2 using templates after _Float{16,32,64,128} and
 584         __gnu_cxx::__bfloat16_t overloads.
 585         (copysign, fdim, fmax, fmin, hypot, nextafter, remainder, remquo):
 586         Likewise.
 587         (fma): Move __gnu_cxx::__promote_3 using template after
 588         _Float{16,32,64,128} and __gnu_cxx::__bfloat16_t overloads.
 589
 590 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         * testsuite/18_support/headers/limits/synopsis.cc: Uncomment
 593         checks for float_round_style and float_denorm_style.
 594
 595 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 596
 597         * include/bits/c++config: Add system_header pragma.
 598
 599 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 600
 601         * include/std/expected (expected::and_then, expected::or_else)
 602         (expected::transform, expected::transform_error): Fix exception
 603         specifications as per LWG 3877.
 604         (expected<void, E>::and_then, expected<void, E>::transform):
 605         Likewise.
 606         * testsuite/20_util/expected/lwg3877.cc: New test.
 607
 608 2023-05-17  Ken Matsui  <kmatsui@cs.washington.edu>
 609
 610         * include/std/type_traits: Use __bool_constant instead of
 611         integral_constant.
 612
 613 2023-05-17  Jonathan Wakely  <jwakely@redhat.com>
 614
 615         * configure: Regenerate.
 616
 617 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 618
 619         PR libstdc++/109741
 620         * acinclude.m4 (GLIBCXX_CHECK_ALIGNAS_CACHELINE): Define.
 621         * config.h.in: Regenerate.
 622         * configure: Regenerate.
 623         * configure.ac: Use GLIBCXX_CHECK_ALIGNAS_CACHELINE.
 624         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex): Do not
 625         align lock table if not supported. use __GCC_DESTRUCTIVE_SIZE
 626         instead of hardcoded 64.
 627
 628 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 629
 630         * acinclude.m4 (GLIBCXX_USE_C99): Check for isblank in C++11
 631         mode and define _GLIBCXX_USE_C99_CTYPE. Check for <fenv.h>
 632         functions in C++11 mode and define _GLIBCXX_USE_C99_FENV.
 633         * config.h.in: Regenerate.
 634         * configure: Regenerate.
 635         * include/c_compatibility/fenv.h: Check _GLIBCXX_USE_C99_FENV
 636         instead of _GLIBCXX_USE_C99_FENV_TR1.
 637         * include/c_global/cfenv: Likewise.
 638         * include/c_global/cctype: Check _GLIBCXX_USE_C99_CTYPE instead
 639         of _GLIBCXX_USE_C99_CTYPE_TR1.
 640
 641 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 642
 643         * acinclude.m4 (GLIBCXX_USE_C99): Check for <stdint.h> types in
 644         C++11 mode and define _GLIBCXX_USE_C99_STDINT. Check for
 645         <inttypes.h> features in C++11 mode and define
 646         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T.
 647         * config.h.in: Regenerate.
 648         * configure: Regenerate.
 649         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
 650         * include/bits/chrono.h: Check _GLIBCXX_USE_C99_STDINT instead
 651         of _GLIBCXX_USE_C99_STDINT_TR1.
 652         * include/c_compatibility/inttypes.h: Check
 653         _GLIBCXX_USE_C99_INTTYPES and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T
 654         instead of _GLIBCXX_USE_C99_INTTYPES_TR1 and
 655         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 656         * include/c_compatibility/stdatomic.h: Check
 657         _GLIBCXX_USE_C99_STDINT instead of _GLIBCXX_USE_C99_STDINT_TR1.
 658         * include/c_compatibility/stdint.h: Likewise.
 659         * include/c_global/cinttypes: Check _GLIBCXX_USE_C99_INTTYPES
 660         and _GLIBCXX_USE_C99_INTTYPES_WCHAR_T instead of
 661         _GLIBCXX_USE_C99_INTTYPES_TR1 and
 662         _GLIBCXX_USE_C99_INTTYPES_WCHAR_T_TR1.
 663         * include/c_global/cstdint: Check _GLIBCXX_USE_C99_STDINT
 664         instead of _GLIBCXX_USE_C99_STDINT_TR1.
 665         * include/std/atomic: Likewise.
 666         * src/c++11/cow-stdexcept.cc: Likewise.
 667         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 668         Likewise.
 669         * testsuite/lib/libstdc++.exp (check_v3_target_cstdint):
 670         Likewise.
 671
 672 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 673
 674         * acinclude.m4 (GLIBCXX_USE_C99): Check for complex inverse trig
 675         functions in C++11 mode and define _GLIBCXX_USE_C99_COMPLEX_ARC.
 676         * config.h.in: Regenerate.
 677         * configure: Regenerate.
 678         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macro.
 679         * include/std/complex: Check _GLIBCXX_USE_C99_COMPLEX_ARC
 680         instead of _GLIBCXX_USE_C99_COMPLEX_TR1.
 681
 682 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 683
 684         * testsuite/ext/debug_allocator/check_deallocate_null.cc: Add
 685         assertion to ensure expected exception is throw.
 686
 687 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 688
 689         * testsuite/libstdc++-prettyprinters/chrono.cc: Only test
 690         printer for chrono::zoned_time for cx11 ABI and tzdb effective
 691         target.
 692
 693 2023-05-16  Jonathan Wakely  <jwakely@redhat.com>
 694
 695         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define
 696         _GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK in terms of _GLIBCXX_TSAN.
 697         * configure: Regenerate.
 698
 699 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 700
 701         * acinclude.m4 (GLIBCXX_CHECK_C99_TR1): Use a non-null pointer
 702         to check for nan, nanf, and nanl.
 703         * configure: Regenerate.
 704
 705 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 706
 707         * include/bits/char_traits.h (char_traits<char16_t>): Do not
 708         depend on _GLIBCXX_USE_C99_STDINT_TR1.
 709         (char_traits<char32_t>): Likewise.
 710         * include/experimental/source_location: Likewise.
 711
 712 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 713
 714         * include/std/atomic (atomic_int_least8_t, atomic_uint_least8_t)
 715         (atomic_int_least16_t, atomic_uint_least16_t)
 716         (atomic_int_least32_t, atomic_uint_least32_t)
 717         (atomic_int_least64_t, atomic_uint_least64_t)
 718         (atomic_int_fast16_t, atomic_uint_fast16_t)
 719         (atomic_int_fast32_t, atomic_uint_fast32_t)
 720         (atomic_int_fast64_t, atomic_uint_fast64_t)
 721         (atomic_intmax_t, atomic_uintmax_t): Define unconditionally.
 722         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Adjust.
 723
 724 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 725
 726         * include/bits/algorithmfwd.h (shuffle): Do not depend on
 727         _GLIBCXX_USE_C99_STDINT_TR1.
 728         * include/bits/ranges_algo.h (shuffle): Likewise.
 729         * include/bits/stl_algo.h (shuffle): Likewise.
 730         * include/ext/random: Likewise.
 731         * include/ext/throw_allocator.h (random_condition): Likewise.
 732         * include/std/random: Likewise.
 733         * src/c++11/cow-string-inst.cc: Likewise.
 734         * src/c++11/random.cc: Likewise.
 735
 736 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 737
 738         * testsuite/experimental/feat-cxx14.cc: Remove dependency on
 739         _GLIBCXX_USE_C99_STDINT_TR1.
 740
 741 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 742
 743         * testsuite/22_locale/locale/cons/unicode.cc: Remove dependency
 744         on _GLIBCXX_USE_C99_STDINT_TR1.
 745
 746 2023-05-12  Jonathan Wakely  <jwakely@redhat.com>
 747
 748         * testsuite/21_strings/basic_string_view/typedefs.cc: Remove
 749         dependency on _GLIBCXX_USE_C99_STDINT_TR1.
 750         * testsuite/experimental/string_view/typedefs.cc: Likewise.
 751
 752 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 753
 754         * src/c++17/floating_from_chars.cc [USE_STRTOD_FOR_FROM_CHARS]
 755         (auto_locale, auto_ferounding): New class types.
 756         (from_chars_impl): Use auto_locale and auto_ferounding.
 757
 758 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 759
 760         PR libstdc++/109772
 761         * include/std/chrono (hh_mm_ss::__fits): Remove variable
 762         template.
 763         (hh_mm_ss::__subseconds): Remove __fits from constraints.
 764         * testsuite/std/time/hh_mm_ss/109772.cc: New test.
 765         * testsuite/std/time/hh_mm_ss/1.cc: Adjust expected size for
 766         hh_mm_ss<duration<int, std::pico>>.
 767
 768 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 769
 770         * config/abi/pre/gnu.ver: Export basic_string::_S_allocate.
 771         * include/bits/basic_ios.h: Add static assertion checking
 772         traits_type::value_type.
 773         * include/bits/basic_string.h: Likewise. Do not rebind
 774         allocator, and add static assertion checking its value_type.
 775         (basic_string::_Alloc_traits_impl): Remove class template.
 776         (basic_string::_S_allocate): New static member function.
 777         (basic_string::assign): Use _S_allocate.
 778         * include/bits/basic_string.tcc (basic_string::_M_create)
 779         (basic_string::reserve, basic_string::_M_replace): Likewise.
 780         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/debug.cc:
 781         Disable for C++20 and later.
 782         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/int.cc:
 783         Likweise.
 784
 785 2023-05-11  Jonathan Wakely  <jwakely@redhat.com>
 786
 787         PR libstdc++/109758
 788         * include/bits/std_abs.h (abs(__float128)): Handle negative NaN
 789         and negative zero correctly.
 790         * testsuite/26_numerics/headers/cmath/109758.cc: New test.
 791
 792 2023-05-10  François Dumont  <fdumont@gcc.gnu.org>
 793
 794         * include/bits/hashtable_policy.h
 795         (_NodeBuilder<>::_S_build): Use __node_ptr.
 796         (_ReuseOrAllocNode<>): Use __node_ptr in place of __node_type*.
 797         (_AllocNode<>): Likewise.
 798         (_Equality<>::_M_equal): Remove const_iterator usages. Only preserved
 799         to call std::is_permutation in the non-unique key implementation.
 800         * include/bits/hashtable.h (_Hashtable<>::_M_update_begin()): Capture
 801         _M_begin() once.
 802         (_Hashtable<>::_M_bucket_begin(size_type)): Implement implicitly inline.
 803         (_Hashtable<>::_M_insert_bucket_begin): Likewise.
 804         (_Hashtable<>::_M_remove_bucket_begin): Likewise.
 805         (_Hashtable<>::_M_compute_hash_code): Use __node_ptr rather than
 806         const_iterator.
 807         (_Hashtable<>::find): Likewise.
 808         (_Hashtable<>::_M_emplace): Likewise.
 809         (_Hashtable<>::_M_insert_unique): Likewise.
 810
 811 2023-05-09  Jonathan Wakely  <jwakely@redhat.com>
 812
 813         * python/libstdcxx/v6/printers.py (StdChronoDurationPrinter):
 814         Print floating-point durations correctly.
 815         (StdChronoTimePointPrinter): Support printing only the value,
 816         not the type name. Uncomment handling for known clocks.
 817         (StdChronoZonedTimePrinter): Remove type names from output.
 818         (StdChronoCalendarPrinter): Fix hh_mm_ss member access.
 819         (StdChronoTimeZonePrinter): Add equals sign to output.
 820         * testsuite/libstdc++-prettyprinters/chrono.cc: New test.
 821
 822 2023-05-05  Alexandre Oliva  <oliva@adacore.com>
 823
 824         * testsuite/20_util/from_chars/4.cc: Skip long double test06
 825         on aarch64-vxworks.
 826         * testsuite/20_util/to_chars/long_double.cc: Xfail run on
 827         aarch64-vxworks.
 828
 829 2023-05-04  Jonathan Wakely  <jwakely@redhat.com>
 830
 831         * doc/xml/manual/abi.xml (abi.versioning.history): Document
 832         libstdc++.so.6.0.32 and GLIBCXX_3.4.32 version.
 833         * doc/html/manual/abi.html: Regenerate.
 834
 835 2023-05-04  Florian Weimer  <fweimer@redhat.com>
 836
 837         * doc/xml/manual/abi.xml (abi.versioning.history): Add
 838         GCC_7.0.0, GCC_9.0.0, GCC_11.0, GCC_12.0.0, GCC_13.0.0 for
 839         libgcc_s.
 840
 841 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 842
 843         * src/c++17/floating_from_chars.cc
 844         (_ZSt10from_charsPKcS0_RDF128_St12chars_format): New alias to
 845         _ZSt10from_charsPKcS0_Ru9__ieee128St12chars_format.
 846         * src/c++17/floating_to_chars.cc (_ZSt8to_charsPcS_DF128_): New alias to
 847         _ZSt8to_charsPcS_u9__ieee128.
 848         (_ZSt8to_charsPcS_DF128_St12chars_format): New alias to
 849         _ZSt8to_charsPcS_u9__ieee128St12chars_format.
 850         (_ZSt8to_charsPcS_DF128_St12chars_formati): New alias to
 851         _ZSt8to_charsPcS_u9__ieee128St12chars_formati.
 852         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Updated.
 853
 854 2023-05-03  Jakub Jelinek  <jakub@redhat.com>
 855
 856         * configure.host (abi_baseline_pair): Use powerpc64le-linux-gnu
 857         rather than powerpc64-linux-gnu for powerpc64le*-linux*.
 858         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Remove
 859         _ZTI*DF128_, _ZTI*DF64x symbols and symbols in
 860         GLIBCXX_IEEE128_3.4.{29,30,31} and CXXABI_IEEE128_1.3.13 symbol
 861         versions.
 862         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: New
 863         file.
 864
 865 2023-05-03  Kefu Chai  <kefu.chai@scylladb.com>
 866             Jonathan Wakely  <jwakely@redhat.com>
 867
 868         PR libstdc++/109703
 869         * include/bits/basic_string.h (basic_string(Iter, Iter, Alloc)):
 870         Initialize _M_string_length.
 871
 872 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
 873
 874         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 875         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
 876         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 877         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
 878         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 879         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
 880         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
 881         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
 882
 883 2023-05-02  Jakub Jelinek  <jakub@redhat.com>
 884
 885         PR libstdc++/109694
 886         * src/c++98/ios_init.cc: Add #pragma GCC diagnostic ignored for
 887         -Wattribute-alias.
 888
 889 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 890
 891         * include/bits/random.h (gamma_distribution): Add to the right
 892         doxygen group.
 893         (discrete_distribution, piecewise_constant_distribution)
 894         (piecewise_linear_distribution): Create a new doxygen group and
 895         fix the incomplete doxygen comments.
 896         * include/bits/uniform_int_dist.h (uniform_int_distribution):
 897         Add to doxygen group.
 898
 899 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         * include/bits/uses_allocator.h: Add missing @file comment.
 902         * include/bits/regex.tcc: Remove stray doxygen comments.
 903         * include/experimental/memory_resource: Likewise.
 904         * include/std/bit: Tweak doxygen @cond comments.
 905         * include/std/expected: Likewise.
 906         * include/std/numbers: Likewise.
 907
 908 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 909
 910         * doc/doxygen/user.cfg.in (STRIP_FROM_PATH): Remove prefixes
 911         from header paths.
 912
 913 2023-04-28  Jonathan Wakely  <jwakely@redhat.com>
 914
 915         * include/bits/move.h: Simplify opening/closing namespace std.
 916
 917 2023-04-28  Jakub Jelinek  <jakub@redhat.com>
 918
 919         PR libstdc++/108969
 920         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Export
 921         _ZSt21ios_base_library_initv.
 922         * testsuite/util/testsuite_abi.cc (check_version): Add GLIBCXX_3.4.32
 923         symver and make it the latestp.
 924         * src/c++98/ios_init.cc (ios_base_library_init): New alias.
 925         * acinclude.m4 (libtool_VERSION): Change to 6:32:0.
 926         * include/std/iostream: If init_priority attribute is supported
 927         and _GLIBCXX_SYMVER_GNU, force undefined _ZSt21ios_base_library_initv
 928         symbol into the object.
 929         * configure: Regenerated.
 930
 931 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 932
 933         * include/bits/mofunc_impl.h: Fix typo in doxygen comment.
 934         * include/std/format: Likewise.
 935
 936 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 937
 938         * doc/doxygen/user.cfg.in (FORMULA_TRANSPARENT, DOT_FONTNAME)
 939         (DOT_FONTSIZE, DOT_TRANSPARENT): Remove obsolete options.
 940
 941 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 942
 943         * doc/doxygen/user.cfg.in (SOURCE_BROWSER): Only set to YES for
 944         HTML docs.
 945         * include/bits/gslice_array.h (_DEFINE_VALARRAY_OPERATOR): Omit
 946         from doxygen docs.
 947         * include/bits/indirect_array.h (_DEFINE_VALARRAY_OPERATOR):
 948         Likewise.
 949         * include/bits/mask_array.h (_DEFINE_VALARRAY_OPERATOR):
 950         Likewise.
 951         * include/bits/slice_array.h (_DEFINE_VALARRAY_OPERATOR):
 952         Likewise.
 953         * include/std/valarray (_DEFINE_VALARRAY_UNARY_OPERATOR)
 954         (_DEFINE_VALARRAY_AUGMENTED_ASSIGNMENT)
 955         (_DEFINE_VALARRAY_EXPR_AUGMENTED_ASSIGNMENT)
 956         (_DEFINE_BINARY_OPERATOR): Likewise.
 957
 958 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 959
 960         * include/bits/memory_resource.h: Improve doxygen comments.
 961         * include/std/memory_resource: Likewise.
 962
 963 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 964
 965         PR libstdc++/40380
 966         * include/bits/basic_string.h: Improve doxygen comments.
 967         * include/bits/cow_string.h: Likewise.
 968         * include/bits/forward_list.h: Likewise.
 969         * include/bits/fs_dir.h: Likewise.
 970         * include/bits/fs_path.h: Likewise.
 971         * include/bits/quoted_string.h: Likewise.
 972         * include/bits/stl_bvector.h: Likewise.
 973         * include/bits/stl_map.h: Likewise.
 974         * include/bits/stl_multimap.h: Likewise.
 975         * include/bits/stl_multiset.h: Likewise.
 976         * include/bits/stl_set.h: Likewise.
 977         * include/bits/stl_vector.h: Likewise.
 978         * include/bits/unordered_map.h: Likewise.
 979         * include/bits/unordered_set.h: Likewise.
 980         * include/std/filesystem: Likewise.
 981         * include/std/iomanip: Likewise.
 982
 983 2023-04-27  Jonathan Wakely  <jwakely@redhat.com>
 984
 985         PR libstdc++/105081
 986         * src/c++11/random.cc (__throw_syserr): New function.
 987         (random_device::_M_init, random_device::_M_init_pretr1): Use new
 988         function for bad tokens.
 989         (random_device::_M_getval): Use new function for read errors.
 990         * testsuite/util/testsuite_random.h (random_device_available):
 991         Change catch handler to use std::system_error.
 992
 993 2023-04-24  Patrick Palka  <ppalka@redhat.com>
 994
 995         * include/bits/max_size_type.h (__max_diff_type::operator>>=):
 996         Fix propagation of sign bit.
 997         * testsuite/std/ranges/iota/max_size_type.cc: Avoid using the
 998         non-standard 'signed typedef-name'.  Add some compile-time tests
 999         for right-shifting a negative __max_diff_type value by more than
1000         one.
1001
1002 2023-04-19  Patrick Palka  <ppalka@redhat.com>
1003             Jonathan Wakely  <jwakely@redhat.com>
1004
1005         PR c++/100157
1006         * include/bits/utility.h (_Nth_type): Conditionally define in
1007         terms of __type_pack_element if available.
1008         * testsuite/20_util/tuple/element_access/get_neg.cc: Prune
1009         additional errors from the new built-in.
1010
1011 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
1012
1013         Revert:
1014         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1015
1016         PR libstdc++/108969
1017         * src/Makefile.am: Move globals_io.cc to here.
1018         * src/Makefile.in: Regenerate.
1019         * src/c++98/Makefile.am: Remove globals_io.cc from here.
1020         * src/c++98/Makefile.in: Regenerate.
1021         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
1022         symbol name and then export with GLIBCXX_3.4.31 symver.
1023         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
1024         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
1025         Regenerate.
1026         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
1027         Regenerate.
1028         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
1029         Regenerate.
1030         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1031         Regenerate.
1032         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
1033         Regenerate.
1034         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
1035         Regenerate.
1036         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
1037         Regenerate.
1038         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
1039         Regenerate.
1040         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
1041
1042 2023-04-19  Jonathan Wakely  <jwakely@redhat.com>
1043
1044         Revert:
1045         2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1046
1047         PR libstdc++/108969
1048         * config/abi/pre/gnu.ver: Fix preprocessor condition.
1049
1050 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1051
1052         * doc/xml/manual/extensions.xml: Fix example to declare and
1053         qualify std::free, and use NULL instead of 0.
1054         * doc/html/manual/ext_demangling.html: Regenerate.
1055         * libsupc++/cxxabi.h: Adjust doxygen comments.
1056
1057 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1058
1059         PR libstdc++/108969
1060         * config/abi/pre/gnu.ver: Fix preprocessor condition.
1061
1062 2023-04-18  Jonathan Wakely  <jwakely@redhat.com>
1063
1064         PR libstdc++/108969
1065         * src/Makefile.am: Move globals_io.cc to here.
1066         * src/Makefile.in: Regenerate.
1067         * src/c++98/Makefile.am: Remove globals_io.cc from here.
1068         * src/c++98/Makefile.in: Regenerate.
1069         * src/c++98/globals_io.cc [_GLIBCXX_SYMVER_GNU] (cin): Adjust
1070         symbol name and then export with GLIBCXX_3.4.31 symver.
1071         (cout, cerr, clog, wcin, wcout, wcerr, wclog): Likewise.
1072         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt:
1073         Regenerate.
1074         * config/abi/post/i486-linux-gnu/baseline_symbols.txt:
1075         Regenerate.
1076         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt:
1077         Regenerate.
1078         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
1079         Regenerate.
1080         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
1081         Regenerate.
1082         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt:
1083         Regenerate.
1084         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt:
1085         Regenerate.
1086         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt:
1087         Regenerate.
1088         * config/abi/pre/gnu.ver: Add iostream objects to new symver.
1089
1090 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1091
1092         PR libstdc++/108827
1093         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Bump value
1094         for C++23.
1095         * include/std/ranges (range_adaptor_closure): Define for C++23.
1096         * include/std/version (__cpp_lib_ranges): Bump value for
1097         C++23.
1098         * testsuite/std/ranges/version_c++23.cc: Bump expected value
1099         of __cpp_lib_ranges.
1100         * testsuite/std/ranges/range_adaptor_closure.cc: New test.
1101
1102 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1103
1104         * include/bits/ranges_algo.h (__cpp_lib_ranges_contains):
1105         Define for C++23.
1106         (__cpp_lib_ranges_iota): Likewise.
1107         (__cpp_lib_ranges_find_last): Likewise.
1108         (__cpp_lib_fold): Rename to ...
1109         (__cpp_lib_ranges_fold): ... this.
1110         * include/std/version: As above.
1111         * testsuite/25_algorithms/fold_left/1.cc: Adjust after
1112         renaming __cpp_lib_fold.
1113         * testsuite/std/ranges/version_c++23.cc: Verify values
1114         of the above feature-test macros.
1115
1116 2023-04-18  Patrick Palka  <ppalka@redhat.com>
1117
1118         PR libstdc++/109525
1119         * include/std/ranges (views::_AsConst::operator()): Add
1120         missing const to constant_range test.
1121         * testsuite/std/ranges/adaptors/as_const/1.cc (test02):
1122         Improve formatting.  Adjust expected type of v2.
1123         (test03): New test.
1124
1125 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1126
1127         * include/bits/ranges_base.h (const_iterator_t): Define for C++23.
1128         (const_sentinel_t): Likewise.
1129         (range_const_reference_t): Likewise.
1130         (constant_range): Likewise.
1131         (__cust_access::__possibly_const_range): Likewise, replacing ...
1132         (__cust_access::__as_const): ... this.
1133         (__cust_access::_CBegin::operator()): Redefine for C++23 as per P2278R4.
1134         (__cust_access::_CEnd::operator()): Likewise.
1135         (__cust_access::_CRBegin::operator()): Likewise.
1136         (__cust_access::_CREnd::operator()): Likewise.
1137         (__cust_access::_CData::operator()): Likewise.
1138         * include/bits/ranges_util.h (ranges::__detail::__different_from):
1139         Make it an alias of std::__detail::__different_from.
1140         (view_interface::cbegin): Define for C++23.
1141         (view_interface::cend): Likewise.
1142         * include/bits/stl_iterator.h (__detail::__different_from): Define.
1143         (iter_const_reference_t): Define for C++23.
1144         (__detail::__constant_iterator): Likewise.
1145         (__detail::__is_const_iterator): Likewise.
1146         (__detail::__not_a_const_iterator): Likewise.
1147         (__detail::__iter_const_rvalue_reference_t): Likewise.
1148         (__detail::__basic_const_iter_cat):: Likewise.
1149         (const_iterator): Likewise.
1150         (__detail::__const_sentinel): Likewise.
1151         (const_sentinel): Likewise.
1152         (basic_const_iterator): Likewise.
1153         (common_type<basic_const_iterator<_Tp>, _Up>): Likewise.
1154         (common_type<_Up, basic_const_iterator<_Tp>>): Likewise.
1155         (common_type<basic_const_iterator<_Tp>, basic_const_iterator<Up>>):
1156         Likewise.
1157         (make_const_iterator): Define for C++23.
1158         (make_const_sentinel): Likewise.
1159         * include/std/ranges (__cpp_lib_ranges_as_const): Likewise.
1160         (as_const_view): Likewise.
1161         (enable_borrowed_range<as_const_view>): Likewise.
1162         (views::__detail::__is_ref_view): Likewise.
1163         (views::__detail::__can_is_const_view): Likewise.
1164         (views::_AsConst, views::as_const): Likewise.
1165         * include/std/span (span::const_iterator): Likewise.
1166         (span::const_reverse_iterator): Likewise.
1167         (span::cbegin): Likewise.
1168         (span::cend): Likewise.
1169         (span::crbegin): Likewise.
1170         (span::crend): Likewise.
1171         * include/std/version (__cpp_lib_ranges_as_const): Likewise.
1172         * testsuite/std/ranges/adaptors/join.cc (test06): Adjust to
1173         behave independently of C++20 vs C++23.
1174         * testsuite/std/ranges/version_c++23.cc: Verify value of
1175         __cpp_lib_ranges_as_const macro.
1176         * testsuite/24_iterators/const_iterator/1.cc: New test.
1177         * testsuite/std/ranges/adaptors/as_const/1.cc: New test.
1178
1179 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1180
1181         * include/bits/ranges_base.h (__cust_access::__as_const)
1182         (__cust_access::_CBegin, __cust::cbegin)
1183         (__cust_access::_CEnd, __cust::cend)
1184         (__cust_access::_CRBegin, __cust::crbegin)
1185         (__cust_access::_CREnd, __cust::crend)
1186         (__cust_access::_CData, __cust::cdata): Move down definitions to
1187         shortly after the definition of input_range.
1188
1189 2023-04-14  Patrick Palka  <ppalka@redhat.com>
1190
1191         * include/bits/ranges_algo.h: Include <optional> for C++23.
1192         (__cpp_lib_fold): Define for C++23.
1193         (in_value_result): Likewise.
1194         (__detail::__flipped): Likewise.
1195         (__detail::__indirectly_binary_left_foldable_impl): Likewise.
1196         (__detail::__indirectly_binary_left_foldable): Likewise.
1197         (___detail:__indirectly_binary_right_foldable): Likewise.
1198         (fold_left_with_iter_result): Likewise.
1199         (__fold_left_with_iter_fn, fold_left_with_iter): Likewise.
1200         (__fold_left_fn, fold_left): Likewise.
1201         (__fold_left_first_with_iter_fn, fold_left_first_with_iter):
1202         Likewise.
1203         (__fold_left_first_fn, fold_left_first): Likewise.
1204         (__fold_right_fn, fold_right): Likewise.
1205         (__fold_right_last_fn, fold_right_last): Likewise.
1206         * include/std/version (__cpp_lib_fold): Likewise.
1207         * testsuite/25_algorithms/fold_left/1.cc: New test.
1208         * testsuite/25_algorithms/fold_right/1.cc: New test.
1209
1210 2023-04-14  Jonathan Wakely  <jwakely@redhat.com>
1211
1212         * include/std/format (formatter): Add comment to deleted default
1213         constructor of primary template.
1214         (_Checking_scanner): Add static_assert.
1215
1216 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1217
1218         * doc/xml/manual/using.xml: Document libstdc++exp.a library.
1219         * doc/html/*: Regenerate.
1220
1221 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1222
1223         * testsuite/17_intro/names.cc [_AIX]: Do not define policy.
1224         * testsuite/19_diagnostics/error_code/cons/lwg3629.cc: Rename
1225         namespace to avoid clashing with libc struct.
1226         * testsuite/19_diagnostics/error_condition/cons/lwg3629.cc:
1227         Likewise.
1228         * testsuite/23_containers/unordered_map/96088.cc: Skip on AIX.
1229         * testsuite/23_containers/unordered_multimap/96088.cc: Likewise.
1230         * testsuite/23_containers/unordered_multiset/96088.cc: Likewise.
1231         * testsuite/23_containers/unordered_set/96088.cc: Likewise.
1232         * testsuite/experimental/synchronized_value.cc: Require gthreads
1233         and add missing option for pthreads targets.
1234
1235 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1236
1237         * include/std/ranges (__cpp_lib_ranges_enumerate): Define
1238         for C++23.
1239         (__detail::__range_with_movable_reference): Likewise.
1240         (enumerate_view): Likewise.
1241         (enumerate_view::_Iterator): Likewise.
1242         (enumerate_view::_Sentinel): Likewise.
1243         (views::__detail::__can_enumerate_view): Likewise.
1244         (views::_Enumerate, views::enumerate): Likewise.
1245         * include/std/version (__cpp_lib_ranges_enumerate): Likewise.
1246         * testsuite/std/ranges/version_c++23.cc: Verify value of
1247         __cpp_lib_ranges_enumerate.
1248         * testsuite/std/ranges/adaptors/enumerate/1.cc: New test.
1249
1250 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1251
1252         * include/std/ranges (lazy_split_view::_OuterIter::_OuterIter):
1253         Propagate _M_trailing_empty in the const-converting constructor
1254         as per LWG 3904.
1255         * testsuite/std/ranges/adaptors/adjacent/1.cc (test04): Correct
1256         assertion.
1257         * testsuite/std/ranges/adaptors/lazy_split.cc (test12): New test.
1258
1259 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1260
1261         * src/c++17/floating_from_chars.cc: Include <algorithm>,
1262         <iterator>, <limits> and <cstdint>.
1263
1264 2023-04-12  Patrick Palka  <ppalka@redhat.com>
1265
1266         PR libstdc++/108291
1267         * include/std/ranges (chunk_by_view::_M_find_next): Generalize
1268         parameter types of the lambda wrapper passed to adjacent_find.
1269         (chunk_by_view::_M_find_prev): Likewise.
1270         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test04, test05):
1271         New tests.
1272
1273 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1274
1275         PR libstdc++/109482
1276         * include/experimental/internet (basic_endpoint::basic_endpoint()):
1277         Ensure that the required union members are active. Only define
1278         as constexpr for C++20 and later.
1279         (basic_endpoint::basic_endpoint(const protocol_type&, port_type)):
1280         Likewise.
1281         * testsuite/experimental/net/internet/endpoint/cons.cc: Only
1282         check constexpr default constructor for C++20 and later.
1283         * testsuite/experimental/net/internet/endpoint/extensible.cc:
1284         Likewise.
1285
1286 2023-04-12  Jonathan Wakely  <jwakely@redhat.com>
1287
1288         * src/c++20/tzdata.zi: Import new file from 2023c release.
1289
1290 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1291
1292         * include/precompiled/stdc++.h (C++17): Don't double-include
1293         <charconv>, once with wrong conditions.
1294         * testsuite/18_support/96817.cc: Require hosted.
1295         * testsuite/18_support/bad_exception/59392.cc: Ditto.
1296         * testsuite/20_util/scoped_allocator/108952.cc: Ditto.
1297         * testsuite/20_util/uses_allocator/lwg3527.cc: Ditto.
1298         * testsuite/29_atomics/atomic/operators/pointer_partial_void.cc:
1299         Ditto.
1300
1301 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1302
1303         * include/bits/c++config: When __STDC_HOSTED__ is zero,
1304         disable _GLIBCXX_DEBUG and, if it was set, enable
1305         _GLIBCXX_ASSERTIONS.
1306         * testsuite/lib/libstdc++.exp (check_v3_target_debug_mode):
1307         Include <bits/c++config.h> when determining whether debug is
1308         set, in order to inherit the logic from above
1309
1310 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1311
1312         * testsuite/17_intro/versionconflict.cc: New test.
1313         * include/std/version: Allow disabling the system_header pragma
1314         via _GLIBCXX_TESTING_SYSHDR.
1315
1316 2023-04-05  Arsen Arsenović  <arsen@aarsen.me>
1317
1318         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
1319         Synchronize the definition block with...
1320         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory):
1321         ... this one here.  Also define the 202202L value, rather than
1322         leaving it up to purely unique_ptr.h, so that the value is
1323         synchronized across all headers.
1324         (__gnu_debug::_Safe_iterator_base): Move into new conditional
1325         block.
1326         * include/std/memory (__cpp_lib_atomic_value_initialization):
1327         Define on freestanding under the same conditions as in
1328         atomic_base.h.
1329         * include/std/version (__cpp_lib_robust_nonmodifying_seq_ops):
1330         Also define on freestanding.
1331         (__cpp_lib_to_chars): Ditto.
1332         (__cpp_lib_gcd): Ditto.
1333         (__cpp_lib_gcd_lcm): Ditto.
1334         (__cpp_lib_raw_memory_algorithms): Ditto.
1335         (__cpp_lib_array_constexpr): Ditto.
1336         (__cpp_lib_nonmember_container_access): Ditto.
1337         (__cpp_lib_clamp): Ditto.
1338         (__cpp_lib_constexpr_char_traits): Ditto.
1339         (__cpp_lib_constexpr_string): Ditto.
1340         (__cpp_lib_sample): Ditto.
1341         (__cpp_lib_lcm): Ditto.
1342         (__cpp_lib_constexpr_iterator): Ditto.
1343         (__cpp_lib_constexpr_char_traits): Ditto.
1344         (__cpp_lib_interpolate): Ditto.
1345         (__cpp_lib_constexpr_utility): Ditto.
1346         (__cpp_lib_shift): Ditto.
1347         (__cpp_lib_ranges): Ditto.
1348         (__cpp_lib_move_iterator_concept): Ditto.
1349         (__cpp_lib_constexpr_numeric): Ditto.
1350         (__cpp_lib_constexpr_functional): Ditto.
1351         (__cpp_lib_constexpr_algorithms): Ditto.
1352         (__cpp_lib_constexpr_tuple): Ditto.
1353         (__cpp_lib_constexpr_memory): Ditto.
1354
1355 2023-04-05  John David Anglin  <danglin@gcc.gnu.org>
1356
1357         * testsuite/22_locale/locale/cons/12658_thread-2.cc: Double
1358         timeout factor on hppa*-*-*.
1359
1360 2023-04-05  Jonathan Wakely  <jwakely@redhat.com>
1361
1362         * include/bits/regex.h (sub_match::swap): New function.
1363         * testsuite/28_regex/sub_match/lwg3204.cc: New test.
1364
1365 2023-04-04  Jonathan Wakely  <jwakely@redhat.com>
1366
1367         * doc/xml/manual/extensions.xml: Remove std::bad_exception from
1368         example program.
1369         * doc/html/manual/ext_demangling.html: Regenerate.
1370
1371 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1372
1373         PR tree-optimization/107087
1374         * include/bits/cow_string.h (basic_string::size()): Add
1375         optimizer hint that _S_empty_rep()._M_length is always zero.
1376         (basic_string::length()): Call size().
1377
1378 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1379
1380         PR libstdc++/109339
1381         * include/std/stop_token (_Stop_state_ptr(const stop_source&)):
1382         Add attribute access with access-mode 'none'.
1383         * testsuite/30_threads/stop_token/stop_source/109339.cc: New test.
1384
1385 2023-03-31  Jonathan Wakely  <jwakely@redhat.com>
1386
1387         * include/experimental/internet (ip::basic_endpoint::_M_if_v6):
1388         Revert change from member function to data member. Fix for
1389         constant evaluation by detecting which union member is active.
1390         (ip::basic_endpoint::resize): Revert changes to update _M_is_v6
1391         flag.
1392
1393 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1394
1395         PR libstdc++/109242
1396         * testsuite/20_util/optional/monadic/pr109340.cc: Moved to...
1397         * testsuite/20_util/optional/monadic/pr109242.cc: ...here.
1398
1399 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1400
1401         * include/experimental/internet (ip::make_address): Implement
1402         missing overload.
1403         (ip::address_v4::broadcast()): Avoid undefined shift.
1404         (ip::basic_endpoint): Fix member functions for constexpr.
1405         (ip::basic_endpoint::_M_is_v6): Replace member function with
1406         data member, adjust member functions using it.
1407         (ip::basic_endpoint::resize): Update _M_is_v6 based on sockaddr
1408         content.
1409         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
1410         constexpr checks to work in C++14.
1411         * testsuite/experimental/net/internet/address/v4/creation.cc:
1412         Likewise.
1413         * testsuite/experimental/net/internet/endpoint/cons.cc:
1414         Likewise.
1415         * testsuite/experimental/net/internet/network/v4/cons.cc:
1416         Likewise.
1417         * testsuite/experimental/net/internet/network/v4/members.cc:
1418         Likewise.
1419         * testsuite/experimental/net/internet/endpoint/extensible.cc: New test.
1420
1421 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1422
1423         * include/std/expected (expected::value() &): Use const lvalue
1424         for unex member passed to bad_expected_access constructor, as
1425         per LWG 3843.
1426
1427 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1428
1429         PR libstdc++/109340
1430         * include/std/expected (expected::transform): Use
1431         std::remove_cv_t instead of std::remove_cvref_t.
1432         (expected::transform_error): Likewise.
1433         (expected<cv void, E>::transform): Likewise.
1434         (expected<cv void, E>::transform_error): Likewise.
1435         * include/std/optional (transform): Use std::remove_cv_t.
1436         * testsuite/20_util/optional/monadic/pr109340.cc: New test.
1437
1438 2023-03-29  Jonathan Wakely  <jwakely@redhat.com>
1439
1440         * include/std/optional (optional): Adjust static assertion to
1441         reject arrays and functions as well as references.
1442         * testsuite/20_util/optional/requirements_neg.cc: New test.
1443
1444 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1445
1446         PR libstdc++/103387
1447         * include/bits/istream.tcc (istream::_M_extract(ValueT&)): Use
1448         std::use_facet instead of cached _M_num_get facet.
1449         (istream::operator>>(short&)): Likewise.
1450         (istream::operator>>(int&)): Likewise.
1451         * include/bits/ostream.tcc (ostream::_M_insert(ValueT)): Use
1452         std::use_facet instead of cached _M_num_put facet.
1453
1454 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1455
1456         * include/bits/char_traits.h (char_traits::copy): Return without
1457         using memcpy if n==0.
1458         (char_traits::assign): Likewise for memset.
1459
1460 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1461
1462         PR libstdc++/109299
1463         * include/bits/basic_string.h (basic_string::_M_is_local()): Add
1464         hint for compiler that local strings fit in the local buffer.
1465
1466 2023-03-28  Jonathan Wakely  <jwakely@redhat.com>
1467
1468         PR libstdc++/109288
1469         * include/std/chrono (__detail::__get_leap_second_info): Update
1470         expiry date of hardcoded leapseconds list.
1471         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds()):
1472         Likewise.
1473         * src/c++20/tzdata.zi: Import new file from 2023a release.
1474         * testsuite/std/time/time_zone/get_info_local.cc: Only check
1475         transitions for Egypt up to 2014.
1476
1477 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1478
1479         * include/experimental/bits/simd.h (is_simd_flag_type): New.
1480         (_IsSimdFlagType): New.
1481         (copy_from, copy_to, load ctors): Constrain _Flags using
1482         _IsSimdFlagType.
1483
1484 2023-03-28  Matthias Kretz  <m.kretz@gsi.de>
1485
1486         * include/experimental/bits/simd_x86.h (_SimdImplX86): Use
1487         _Base::_S_divides if the optimized _S_divides function is hidden
1488         via the preprocessor.
1489
1490 2023-03-27  Jakub Jelinek  <jakub@redhat.com>
1491
1492         * testsuite/experimental/net/timer/waitable/dest.cc: Avoid -Wformat
1493         warning if size_t is not unsigned long.
1494
1495 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1496
1497         * include/bits/shared_ptr_atomic.h (atomic::operator=(nullptr_t)):
1498         Add overload, as per LWG 3893.
1499         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1500         Check assignment from nullptr.
1501
1502 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1503
1504         * include/std/format (formatter<const charT[N], charT>): Do not
1505         define partial speclialization, as per LWG 3833.
1506         * testsuite/std/format/formatter/requirements.cc: Check it.
1507
1508 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1509
1510         * include/std/utility (__cpp_lib_constexpr_algorithms): Define,
1511         as per LWG 3792.
1512         * testsuite/20_util/exchange/constexpr.cc: Check for it.
1513
1514 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1515
1516         * include/std/version (__cpp_lib_format): Define.
1517         * testsuite/std/format/functions/format.cc: Check it.
1518
1519 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1520
1521         * include/bits/basic_string.tcc (basic_string::resize_and_overwrite):
1522         Pass rvalues to the callback, as now allowed by LWG 3645.
1523         Enforce preconditions on the return value.
1524         * testsuite/21_strings/basic_string/capacity/char/resize_and_overwrite.cc:
1525         Adjust.
1526
1527 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1528
1529         * include/std/format: Add a comment noting that the resolution
1530         of LWG 3720 has been applied..
1531
1532 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1533
1534         * include/bits/regex.h (match_results): Add allocator-extended
1535         copy and move constructors, as per LWG 2195.
1536         * testsuite/28_regex/match_results/ctors/char/alloc.cc: New test.
1537
1538 2023-03-22  Jonathan Wakely  <jwakely@redhat.com>
1539
1540         * include/bits/stream_iterator.h (istream_iterator): Add
1541         constexpr to copy constructor, as per LWG 3600.
1542         * testsuite/24_iterators/istream_iterator/cons/constexpr.cc:
1543         Check copy construction.
1544
1545 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1546
1547         * include/experimental/bits/simd_x86.h
1548         (_SimdImplX86::_S_divides): Replace test for __GCC_IEC_559 == 0
1549         with __RECIPROCAL_MATH__.
1550
1551 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1552
1553         * include/experimental/bits/simd_detail.h: Don't define
1554         _GLIBCXX_SIMD_WORKAROUND_PR90993 for Clang.
1555         * include/experimental/bits/simd_x86.h (_S_divides): Remove
1556         check for __clang__.
1557
1558 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1559
1560         * include/experimental/bits/simd_detail.h: Don't declare the
1561         simd API as constexpr with Clang.
1562         * include/experimental/bits/simd_x86.h (__movm): New.
1563         (_S_blend_avx512): Resolve FIXME. Implement blend using __movm
1564         and ?:.
1565         (_SimdImplX86::_S_masked_unary): Clang does not implement the
1566         same builtins. Implement the function using __movm, ?:, and -
1567         operators on vector_size types instead.
1568
1569 2023-03-21  Matthias Kretz  <m.kretz@gsi.de>
1570
1571         * testsuite/experimental/simd/tests/operators.cc: Clang doesn't
1572         define __GCC_IEC_559. Use __STDC_IEC_559__ instead.
1573
1574 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1575
1576         * src/filesystem/ops-common.h (get_temp_directory_from_env): Fix
1577         formatting.
1578
1579 2023-03-20  Marek Polacek  <polacek@redhat.com>
1580
1581         PR c++/109159
1582         * testsuite/20_util/pair/cons/explicit_construct.cc: Adjust dg-error.
1583         * testsuite/20_util/tuple/cons/explicit_construct.cc: Likewise.
1584         * testsuite/23_containers/span/explicit.cc: Likewise.
1585
1586 2023-03-20  Jonathan Wakely  <jwakely@redhat.com>
1587
1588         PR libstdc++/109182
1589         * include/std/expected (expected<void>::expected(in_place_t)):
1590         Remove template-head.
1591
1592 2023-03-18  Jonathan Wakely  <jwakely@redhat.com>
1593
1594         PR libstdc++/109165
1595         * testsuite/18_support/coroutines/hash.cc: Use const object
1596         in second call.
1597
1598 2023-03-17  Jonathan Wakely  <jwakely@redhat.com>
1599
1600         PR libstdc++/109165
1601         * include/std/coroutine (hash<>::operator()): Add const.
1602         * testsuite/18_support/coroutines/hash.cc: New test.
1603
1604 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1605
1606         PR libstdc++/109111
1607         * include/std/ranges (repeat_view): Remove redundant parentheses
1608         in requires-clause.
1609         (repeat_view::_Iterator): Correct the requires-clause.
1610
1611 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1612
1613         * include/bits/stl_iterator.h (move_iterator::_S_iter_concept):
1614         Define.
1615         (__cpp_lib_move_iterator_concept): Define for C++20.
1616         (move_iterator::iterator_concept): Strengthen as per P2520R0.
1617         * include/std/version (__cpp_lib_move_iterator_concept): Define
1618         for C++20.
1619         * testsuite/24_iterators/move_iterator/p2520r0.cc: New test.
1620
1621 2023-03-14  Patrick Palka  <ppalka@redhat.com>
1622
1623         * include/bits/ranges_util.h (view_interface::empty): Add
1624         preferred overloads that use ranges::size when the range is
1625         sized as per LWG 3715.
1626         * testsuite/std/ranges/adaptors/lwg3715.cc: New test.
1627
1628 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1629
1630         * include/bits/chrono.h (__is_duration_v, __is_time_point_v):
1631         Only define for C++17 and later.
1632
1633 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1634
1635         * src/Makefile.am: Add comment about linker script fragments.
1636         * src/Makefile.in: Regenerate.
1637
1638 2023-03-14  Jonathan Wakely  <jwakely@redhat.com>
1639
1640         PR libstdc++/62196
1641         * include/bits/mask_array.h (mask_array): Add assertions to
1642         assignment operators.
1643         * include/std/valarray (valarray::operator[](valarray<bool>)):
1644         Add assertions.
1645         * testsuite/26_numerics/valarray/mask-1_neg.cc: New test.
1646         * testsuite/26_numerics/valarray/mask-2_neg.cc: New test.
1647         * testsuite/26_numerics/valarray/mask-3_neg.cc: New test.
1648         * testsuite/26_numerics/valarray/mask-4_neg.cc: New test.
1649         * testsuite/26_numerics/valarray/mask-5_neg.cc: New test.
1650         * testsuite/26_numerics/valarray/mask-6_neg.cc: New test.
1651         * testsuite/26_numerics/valarray/mask-7_neg.cc: New test.
1652         * testsuite/26_numerics/valarray/mask-8_neg.cc: New test.
1653         * testsuite/26_numerics/valarray/mask.cc: New test.
1654
1655 2023-03-13  Jakub Jelinek  <jakub@redhat.com>
1656
1657         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1658         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1659
1660 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1661
1662         * doc/Makefile.am: Add comment referring to documentation.
1663         * doc/Makefile.in: Regenerate.
1664
1665 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1666
1667         * doc/html/*: Regenerate.
1668
1669 2023-03-13  Jonny Grant  <jg@jguk.org>
1670
1671         * doc/xml/faq.xml: Update copyright year.
1672
1673 2023-03-13  Jonathan Wakely  <jwakely@redhat.com>
1674
1675         * include/bits/allocator.h: Fix typo in comment.
1676
1677 2023-03-12  Jakub Jelinek  <jakub@redhat.com>
1678
1679         * config/abi/pre/gnu.ver (CXXABI_1.3.14): Also export __bf16 tinfos
1680         if it isn't mangled as DF16b but u6__bf16.
1681
1682 2023-03-12  Gerald Pfeifer  <gerald@pfeifer.com>
1683
1684         * doc/xml/manual/documentation_hacking.xml: Move www.graphviz.org
1685         to https.
1686         * doc/html/manual/documentation_hacking.html: Regenerate.
1687
1688 2023-03-10  Jonathan Wakely  <jwakely@redhat.com>
1689
1690         PR libstdc++/109064
1691         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker):
1692         Remove self-recursion in __init__. Add missing _supports.
1693         * testsuite/libstdc++-xmethods/shared_ptr.cc: Check use_count()
1694         and unique().
1695
1696 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1697
1698         * include/std/ranges
1699         (cartesian_product_view::_Iterator::_Iterator): Remove
1700         constraint on default constructor as per LWG 3849.
1701         (cartesian_product_view::_Iterator::_M_prev): Adjust position
1702         of _Nm > 0 test as per LWG 3820.
1703         (cartesian_product_view::_Iterator::_M_advance): Perform bounds
1704         checking only on sized cartesian products.
1705         * testsuite/std/ranges/cartesian_product/1.cc (test08): New test.
1706
1707 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1708
1709         PR libstdc++/109024
1710         * include/std/ranges (chunk_by_view::_M_pred): Remove DMI as per
1711         LWG 3796.
1712         (repeat_view::_M_pred): Likewise.
1713         * testsuite/std/ranges/adaptors/chunk_by/1.cc (test03): New test.
1714         * testsuite/std/ranges/repeat/1.cc (test05): New test.
1715
1716 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1717
1718         PR libstdc++/108362
1719         * include/std/ranges (__detail::__can_single_view): New concept.
1720         (_Single::operator()): Constrain it.  Move [[nodiscard]] to the
1721         end of the function declarator.
1722         (__detail::__can_iota_view): New concept.
1723         (_Iota::operator()): Constrain it.  Move [[nodiscard]] to the
1724         end of the function declarator.
1725         (__detail::__can_istream_view): New concept.
1726         (_Istream::operator()): Constrain it.  Move [[nodiscard]] to the
1727         end of the function declarator.
1728         * testsuite/std/ranges/iota/iota_view.cc (test07): New test.
1729         * testsuite/std/ranges/istream_view.cc (test08): New test.
1730         * testsuite/std/ranges/single_view.cc (test07): New test.
1731
1732 2023-03-09  Patrick Palka  <ppalka@redhat.com>
1733
1734         PR libstdc++/107572
1735         * include/std/ranges (cartesian_product_view::end): When
1736         building the tuple of iterators, avoid calling ranges::begin on
1737         the first range if __empty_tail is false.
1738         * testsuite/std/ranges/cartesian_product/1.cc (test07): New test.
1739
1740 2023-03-09  Jonathan Wakely  <jwakely@redhat.com>
1741
1742         PR libstdc++/108882
1743         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Fix incorrect
1744         patterns.
1745
1746 2023-03-07  Jakub Jelinek  <jakub@redhat.com>
1747
1748         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1749         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1750         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1751         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1752         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1753
1754 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
1755
1756         PR libstdc++/108882
1757         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Adjust patterns to
1758         not match symbols in namespace std::__gnu_cxx11_ieee128.
1759         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add patterns for
1760         std::__gnu_cxx11_ieee128::money_{get,put}.
1761
1762 2023-03-07  Jonathan Wakely  <jwakely@redhat.com>
1763
1764         * libsupc++/eh_personality.cc: Fix spelling in comment.
1765
1766 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1767
1768         * testsuite/30_threads/async/async.cc (test04): Initialize
1769         steady_start, renamed from steady_begin, next to slow_start.
1770         Increase tolerance for final wait.
1771
1772 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1773
1774         * testsuite/libstdc++-prettyprinters/80276.cc: Add
1775         std::string to debug info.
1776         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
1777
1778 2023-03-03  Alexandre Oliva  <oliva@adacore.com>
1779
1780         PR libstdc++/104852
1781         PR libstdc++/95989
1782         PR libstdc++/52590
1783         * include/bits/std_thread.h (thread::_M_thread_deps): New
1784         static implicitly-inline member function.
1785         (std::thread template ctor): Pass it to _M_start_thread.
1786         * src/c++11/thread.cc (thread::_M_start_thread): Name depend
1787         parameter, force it live on entry.
1788
1789 2023-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1790
1791         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
1792         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
1793         Likewise.
1794         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
1795         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
1796         Likewise.
1797
1798 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
1799
1800         * include/bits/cow_string.h: Fix typo in comment.
1801
1802 2023-03-01  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * src/c++20/tzdb.cc (chrono::tzdb::current_zone()) Use "UTC" if
1805         current time zone cannot be determined.
1806         * testsuite/std/time/tzdb/1.cc: Remove conditions based on
1807         HAVE_TZDB macro and test all members unconditionally.
1808
1809 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1810
1811         PR libstdc++/108952
1812         * include/bits/uses_allocator_args.h
1813         (uses_allocator_construction_args): Implement LWG 3527.
1814         * testsuite/20_util/pair/astuple/get-2.cc: New test.
1815         * testsuite/20_util/scoped_allocator/108952.cc: New test.
1816         * testsuite/20_util/uses_allocator/lwg3527.cc: New test.
1817
1818 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1819
1820         PR libstdc++/108846
1821         * include/bits/stl_algobase.h (__copy_move<false, false, RA>)
1822         Add __assign_one static member function.
1823         (__copy_move<true, false, RA>): Likewise.
1824         (__copy_move<IsMove, true, RA>): Do not use memmove for a single
1825         value.
1826         (__copy_move_backward<IsMove, true, RA>): Likewise.
1827         * testsuite/25_algorithms/copy/108846.cc: New test.
1828         * testsuite/25_algorithms/copy_backward/108846.cc: New test.
1829         * testsuite/25_algorithms/copy_n/108846.cc: New test.
1830         * testsuite/25_algorithms/move/108846.cc: New test.
1831         * testsuite/25_algorithms/move_backward/108846.cc: New test.
1832
1833 2023-02-28  Jonathan Wakely  <jwakely@redhat.com>
1834
1835         * src/c++11/codecvt.cc: Add [[likely]] and [[unlikely]]
1836         attributes.
1837
1838 2023-02-27  Jonathan Wakely  <jwakely@redhat.com>
1839
1840         * include/bits/basic_ios.h (basic_ios::_M_setstate): Add
1841         caveat to comment.
1842         * include/bits/basic_string.h (resize_and_overwrite): Add
1843         doxygen comment.
1844
1845 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1846
1847         * include/experimental/bits/simd.h: Line breaks and indenting
1848         fixed to follow the libstdc++ standard.
1849         * include/experimental/bits/simd_builtin.h: Likewise.
1850         * include/experimental/bits/simd_fixed_size.h: Likewise.
1851         * include/experimental/bits/simd_neon.h: Likewise.
1852         * include/experimental/bits/simd_ppc.h: Likewise.
1853         * include/experimental/bits/simd_scalar.h: Likewise.
1854         * include/experimental/bits/simd_x86.h: Likewise.
1855
1856 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1857
1858         PR libstdc++/108030
1859         * include/experimental/bits/simd_fixed_size.h
1860         (_SimdImplFixedSize::_S_broadcast): Replace inline with
1861         _GLIBCXX_SIMD_INTRINSIC.
1862         (_SimdImplFixedSize::_S_generate): Likewise.
1863         (_SimdImplFixedSize::_S_load): Likewise.
1864         (_SimdImplFixedSize::_S_masked_load): Likewise.
1865         (_SimdImplFixedSize::_S_store): Likewise.
1866         (_SimdImplFixedSize::_S_masked_store): Likewise.
1867         (_SimdImplFixedSize::_S_min): Likewise.
1868         (_SimdImplFixedSize::_S_max): Likewise.
1869         (_SimdImplFixedSize::_S_complement): Likewise.
1870         (_SimdImplFixedSize::_S_unary_minus): Likewise.
1871         (_SimdImplFixedSize::_S_plus): Likewise.
1872         (_SimdImplFixedSize::_S_minus): Likewise.
1873         (_SimdImplFixedSize::_S_multiplies): Likewise.
1874         (_SimdImplFixedSize::_S_divides): Likewise.
1875         (_SimdImplFixedSize::_S_modulus): Likewise.
1876         (_SimdImplFixedSize::_S_bit_and): Likewise.
1877         (_SimdImplFixedSize::_S_bit_or): Likewise.
1878         (_SimdImplFixedSize::_S_bit_xor): Likewise.
1879         (_SimdImplFixedSize::_S_bit_shift_left): Likewise.
1880         (_SimdImplFixedSize::_S_bit_shift_right): Likewise.
1881         (_SimdImplFixedSize::_S_remquo): Add inline keyword (to be
1882         explicit about not always-inline, yet).
1883         (_SimdImplFixedSize::_S_isinf): Likewise.
1884         (_SimdImplFixedSize::_S_isfinite): Likewise.
1885         (_SimdImplFixedSize::_S_isnan): Likewise.
1886         (_SimdImplFixedSize::_S_isnormal): Likewise.
1887         (_SimdImplFixedSize::_S_signbit): Likewise.
1888
1889 2023-02-24  Matthias Kretz  <m.kretz@gsi.de>
1890
1891         PR libstdc++/108856
1892         * include/experimental/bits/simd_builtin.h
1893         (_SimdImplBuiltin::_S_masked_unary): More efficient
1894         implementation of masked inc-/decrement for integers and floats
1895         without AVX2.
1896         * include/experimental/bits/simd_x86.h
1897         (_SimdImplX86::_S_masked_unary): New. Use AVX512 masked subtract
1898         builtins for masked inc-/decrement.
1899
1900 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1901
1902         * include/experimental/executor (executor): Constrain template
1903         constructors.
1904
1905 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1906
1907         * include/experimental/internet (basic_endpoint): Add missing
1908         constexpr to comparison operators.
1909         * testsuite/experimental/net/internet/endpoint/cons.cc: New test.
1910
1911 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1912
1913         * include/experimental/internet (network_v4::netmask()): Avoid
1914         undefined shift.
1915         (network_v4::broadcast()): Optimize and fix for targets with
1916         uint_least32_t wider than 32 bits.
1917         (network_v4::to_string(const Allocator&)): Fix for custom
1918         allocators and optimize using to_chars.
1919         (operator==(const network_v4&, const network_v4&)): Add missing
1920         constexpr.
1921         (operator==(const network_v6&, const network_v6&)): Likewise.
1922         * testsuite/experimental/net/internet/network/v4/cons.cc: New test.
1923         * testsuite/experimental/net/internet/network/v4/members.cc: New test.
1924
1925 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1926
1927         * include/experimental/internet (address_4(const bytes_type&)):
1928         Use __builtin_bit_cast if available, otherwise convert to
1929         network byte order.
1930         (address_v4::to_bytes()): Likewise, but convert from network
1931         byte order.
1932         * testsuite/experimental/net/internet/address/v4/cons.cc: Fix
1933         incorrect tests. Check for constexpr too.
1934         * testsuite/experimental/net/internet/address/v4/creation.cc:
1935         Likewise.
1936         * testsuite/experimental/net/internet/address/v4/members.cc:
1937         Check that bytes_type is a standard-layout type.
1938
1939 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1940
1941         * include/experimental/internet (address_v4::to_string):
1942         Optimize.
1943         * testsuite/experimental/net/internet/address/v4/members.cc:
1944         Check more addresses.
1945
1946 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1947
1948         * include/ext/aligned_buffer.h (__aligned_buffer): Add
1949         diagnostic pragmas.
1950
1951 2023-02-24  Jonathan Wakely  <jwakely@redhat.com>
1952
1953         * testsuite/std/format/arguments/lwg3810.cc: Move dg-options
1954         before dg-do.
1955
1956 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1957
1958         * testsuite/experimental/simd/tests/reductions.cc: Introduce
1959         max_distance as the type-dependent max error.
1960
1961 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1962
1963         * include/experimental/bits/simd_builtin.h (_S_set): Compare as
1964         int. The actual range of these indexes is very small.
1965
1966 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1967
1968         * include/experimental/bits/simd_x86.h (_S_bit_shift_left)
1969         (_S_bit_shift_right): Declare constexpr. The implementation was
1970         already expecting constexpr evaluation.
1971
1972 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1973
1974         PR libstdc++/108030
1975         * include/experimental/bits/simd_detail.h
1976         (_GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA): Define as empty for
1977         __clang__.
1978
1979 2023-02-23  Matthias Kretz  <m.kretz@gsi.de>
1980
1981         PR libstdc++/108030
1982         * include/experimental/bits/simd.h (__vector_broadcast):
1983         Implement via __vector_broadcast_impl instead of
1984         __call_with_n_evaluations + 2 lambdas.
1985         (__vector_broadcast_impl): New.
1986
1987 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
1988
1989         * src/c++11/shared_ptr.cc (__gnu_internal::get_mutex):
1990         Avoid destruction of the mutex pool.
1991
1992 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
1993
1994         * testsuite/27_io/basic_ofstream/open/char/noreplace.cc: xfail
1995         on vxworks.
1996         * testsuite/27_io/basic_ofstream/open/wchar_t/noreplace.cc:
1997         Likewise.
1998
1999 2023-02-22  Alexandre Oliva  <oliva@adacore.com>
2000
2001         * testsuite/17_intro/names.cc: Undef func on vxworks >= 7 in
2002         kernel mode.
2003
2004 2023-02-20  Andreas Schwab  <schwab@linux-m68k.org>
2005
2006         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2007
2008 2023-02-20  Matthias Kretz  <m.kretz@gsi.de>
2009
2010         * include/experimental/bits/simd.h (__extract_part, split):
2011         Use reserved name for template parameter.
2012
2013 2023-02-20  Andreas Schwab  <schwab@suse.de>
2014
2015         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
2016
2017 2023-02-18  Gerald Pfeifer  <gerald@pfeifer.com>
2018
2019         * doc/xml/faq.xml: Switch two links to www.open-std.org to https.
2020         * doc/html/faq.html: Regenerate.
2021
2022 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2023
2024         * include/experimental/bits/simd_math.h (__hypot): Bitcasting
2025         between scalars requires the __bit_cast helper function instead
2026         of simd_bit_cast.
2027
2028 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2029
2030         * include/experimental/bits/simd_x86.h
2031         (_SimdImplX86::_S_not_equal_to, _SimdImplX86::_S_less)
2032         (_SimdImplX86::_S_less_equal): Do not call
2033         __builtin_is_constant_evaluated in constexpr-if.
2034
2035 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2036
2037         * testsuite/experimental/simd/tests/bits/verify.h
2038         (verify::verify): Use %zx for size_t in format string.
2039
2040 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2041
2042         * testsuite/experimental/simd/generate_makefile.sh: Generate and
2043         pre-compile pch.h, which includes all headers that do not depend
2044         on command-line macros.
2045         * testsuite/experimental/simd/tests/bits/main.h: New file.
2046         (iterate_abis, main): Moved from verify.h.
2047         * testsuite/experimental/simd/tests/bits/verify.h
2048         (iterate_abis, main): Moved to main.h.
2049         * testsuite/experimental/simd/tests/bits/conversions.h: Add
2050         include guard.
2051         (genHalfBits): Simplify.
2052         * testsuite/experimental/simd/tests/bits/make_vec.h: Add include
2053         guard.
2054         (make_alternating_mask): Moved from mask_loadstore.
2055         * testsuite/experimental/simd/tests/bits/mathreference.h: Add
2056         include guard.
2057         * testsuite/experimental/simd/tests/bits/test_values.h: Ditto.
2058         * testsuite/experimental/simd/tests/mask_loadstore.cc
2059         (make_mask, make_alternating_mask): Removed.
2060         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
2061         * testsuite/experimental/simd/tests/operators.cc (genHalfBits):
2062         Removed.
2063         * testsuite/experimental/simd/tests/abs.cc: Only include
2064         bits/main.h.
2065         Ditto.
2066         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
2067         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
2068         * testsuite/experimental/simd/tests/casts.cc: Ditto.
2069         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto.
2070         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
2071         * testsuite/experimental/simd/tests/generator.cc: Ditto.
2072         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
2073         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
2074         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
2075         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
2076         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
2077         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
2078         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
2079         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
2080         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
2081         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
2082         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
2083         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
2084         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
2085         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
2086         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
2087         * testsuite/experimental/simd/tests/simd.cc: Ditto.
2088         * testsuite/experimental/simd/tests/sincos.cc: Ditto.
2089         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
2090         * testsuite/experimental/simd/tests/splits.cc: Ditto.
2091         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
2092         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
2093         * testsuite/experimental/simd/tests/where.cc: Ditto.
2094
2095 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2096
2097         * testsuite/experimental/simd/README.md: Document the timeout
2098         and timeout-factor directives. Minor typo fixed.
2099
2100 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2101
2102         PR libstdc++/108030
2103         * include/experimental/bits/simd_detail.h: Define
2104         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
2105         * include/experimental/bits/simd.h: Annotate lambdas with
2106         _GLIBCXX_SIMD_ALWAYS_INLINE_LAMBDA.
2107         * include/experimental/bits/simd_builtin.h: Ditto.
2108         * include/experimental/bits/simd_converter.h: Ditto.
2109         * include/experimental/bits/simd_fixed_size.h: Ditto.
2110         * include/experimental/bits/simd_math.h: Ditto.
2111         * include/experimental/bits/simd_neon.h: Ditto.
2112         * include/experimental/bits/simd_x86.h: Ditto.
2113
2114 2023-02-16  Matthias Kretz  <m.kretz@gsi.de>
2115
2116         * include/experimental/bits/simd.h
2117         (_SimdWrapper::_M_is_constprop_none_of)
2118         (_SimdWrapper::_M_is_constprop_all_of): Return false unless the
2119         computed result still satisfies __builtin_constant_p.
2120
2121 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2122
2123         * testsuite/std/format/arguments/lwg3810.cc: Replace UTF-8
2124         ellipsis character.
2125
2126 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2127
2128         * include/Makefile.am: Add new header.
2129         * include/Makefile.in: Regenerate.
2130         * include/experimental/synchronized_value: New file.
2131         * testsuite/experimental/synchronized_value.cc: New test.
2132
2133 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2134
2135         * include/experimental/optional: Fix header name in comment.
2136
2137 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2138
2139         * include/std/format (__format::_Arg_store): New class template.
2140         (basic_format_args): Remove nested type _Store and add deduction
2141         guide from _Arg_store.
2142         (basic_format_arg, make_format_args): Adjust.
2143         * testsuite/std/format/arguments/lwg3810.cc: New test.
2144
2145 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2146
2147         * include/bits/stl_pair.h (pair) [C++20]: Add non-dangling
2148         constraints to constructors and add deleted overloads for the
2149         dangling cases, as per P2255R2.
2150         (pair) [!C++20 && _GLIBCXX_DEBUG]: Add static assertions to
2151         make dangling cases ill-formed.
2152         * testsuite/20_util/pair/dangling_ref.cc: New test.
2153
2154 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2155
2156         * testsuite/17_intro/names_pstl.cc: Require et tbb_backend.
2157
2158 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2159
2160         * include/ext/throw_allocator.h: Use reserved names for
2161         parameters.
2162
2163 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2164
2165         * testsuite/17_intro/names_pstl.cc: Add space after effective
2166         target name.
2167
2168 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2169
2170         * include/pstl/algorithm_fwd.h (__pattern_search_n)
2171         (__brick_unique_copy, __brick_adjacent_find)
2172         (__brick_generate_n, __pattern_generate_n): Use reserved names
2173         for parameters.
2174         * include/pstl/algorithm_impl.h (__brick_unique_copy)
2175         (__pattern_reverse, __brick_generate_n): Likewise.
2176         * include/pstl/execution_impl.h (__prefer_unsequenced_tag)
2177         (__prefer_parallel_tag): Likewise.
2178         * include/pstl/glue_algorithm_impl.h (transform): Likewise.
2179         * include/pstl/glue_numeric_defs.h (adjacent_difference):
2180         Likewise.
2181         * include/pstl/numeric_impl.h (__brick_adjacent_difference):
2182         Likewise.
2183         * include/pstl/parallel_backend_tbb.h (__merge_func): Likewise.
2184         * include/pstl/unseq_backend_simd.h (_Combiner)
2185         (__simd_min_element, __simd_minmax_element): Likewise.
2186         * testsuite/17_intro/names_pstl.cc: New test.
2187
2188 2023-02-16  Jonathan Wakely  <jwakely@redhat.com>
2189
2190         * include/bits/fs_ops.h (create_directory): Use reserved name
2191         for parameter.
2192         * include/bits/ranges_algo.h (__contains_subrange_fn):
2193         Likewise.
2194         * include/bits/regex_automaton.h (_State_base::_M_print):
2195         Likewise.
2196         * include/bits/regex_automaton.tcc(_State_base::_M_print):
2197         Likewise.
2198         * include/bits/regex_scanner.tcc(_Scanner::_M_print): Likewise.
2199         * include/experimental/bits/fs_ops.h (create_directory):
2200         Likewise.
2201         * include/std/mutex (timed_mutex::_M_clocklock): Likewise.
2202         (recursive_timed_mutex:_M_clocklock): Likewise.
2203         * include/std/tuple (basic_common_reference): Likewise.
2204         * libsupc++/cxxabi_init_exception.h
2205         (__cxa_init_primary_exception): Likewise.
2206         * testsuite/17_intro/names.cc: Add checks.
2207
2208 2023-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
2209
2210         * doc/xml/manual/status_cxx2017.xml: Update an open-std.org link
2211         to www.open-std.org and https.
2212         * doc/html/manual/status.html: Regenerate.
2213
2214 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
2215
2216         PR libstdc++/103934
2217         * include/std/atomic (atomic_flag_wait): Add.
2218         (atomic_flag_wait_explicit): Add.
2219         (atomic_flag_notify): Add.
2220         (atomic_flag_notify_explicit): Add.
2221         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc:
2222         Add test case to cover missing atomic_flag free functions.
2223
2224 2023-02-14  Thomas W Rodgers  <rodgert@twrodgers.com>
2225
2226         PR libstdc++/103934
2227         * include/std/atomic (atomic_flag_test): Add.
2228         (atomic_flag_test_explicit): Add.
2229         * testsuite/29_atomics/atomic_flag/test/explicit.cc: Add
2230         test case to cover missing atomic_flag free functions.
2231         * testsuite/29_atomics/atomic_flag/test/implicit.cc:
2232         Likewise.
2233
2234 2023-02-13  Gerald Pfeifer  <gerald@pfeifer.com>
2235
2236         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust
2237         "The Component Object Model" reference.
2238         * doc/html/manual/policy_data_structures.html: Regenerate.
2239
2240 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
2241
2242         * doc/xml/manual/containers.xml: Tweak a link to N1780
2243         (C++ standard).
2244         * doc/html/manual/associative.html: Regenerate.
2245
2246 2023-02-12  Gerald Pfeifer  <gerald@pfeifer.com>
2247
2248         * doc/xml/manual/ctype.xml: Change www.unix.org to unix.org.
2249         * doc/html/manual/facets.html: Regenerate.
2250
2251 2023-02-11  Gerald Pfeifer  <gerald@pfeifer.com>
2252
2253         * doc/xml/manual/policy_data_structures_biblio.xml: Update
2254         link to "Worst-case efficient priority queues".
2255         * doc/html/manual/policy_data_structures.html: Regenerate.
2256
2257 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
2258
2259         * doc/xml/manual/using.xml: Document newly-freestanding
2260         headers and the effect of the -ffreestanding flag.
2261         * doc/xml/manual/status_cxx2023.xml: Document P1642R11 as
2262         completed.
2263         * doc/xml/manual/configure.xml: Document that hosted installs
2264         respect __STDC_HOSTED__.
2265         * doc/xml/manual/test.xml: Document how to run tests in
2266         freestanding mode.
2267         * doc/html/*: Regenerate.
2268
2269 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2270
2271         * include/bits/ranges_algo.h (__find_last_fn): Rename T to _Tp.
2272         (__find_last_if_fn): Likewise.
2273
2274 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2275
2276         * include/std/type_traits: Add diagnostic pragmas around
2277         references to deprecated std::aligned_storage and
2278         std::aligned_union traits.
2279         * testsuite/20_util/aligned_storage/requirements/alias_decl.cc:
2280         Add dg-warning for et c++23.
2281         * testsuite/20_util/aligned_storage/requirements/explicit_instantiation.cc:
2282         Likewise.
2283         * testsuite/20_util/aligned_storage/value.cc: Likewise.
2284         * testsuite/20_util/aligned_union/1.cc: Likewise.
2285         * testsuite/20_util/aligned_union/requirements/alias_decl.cc:
2286         Likewise.
2287
2288 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
2289
2290         * doc/doxygen/user.cfg.in (PREDEFINED): Add new macros.
2291         * include/bits/c++config (_GLIBCXX23_DEPRECATED)
2292         (_GLIBCXX23_DEPRECATED_SUGGEST): New macros.
2293         * include/std/type_traits (aligned_storage, aligned_union)
2294         (aligned_storage_t, aligned_union_t): Deprecate for C++23.
2295         * testsuite/20_util/aligned_storage/deprecated-2b.cc: New test.
2296         * testsuite/20_util/aligned_union/deprecated-2b.cc: New test.
2297
2298 2023-02-06  Nathaniel Shead  <nathanieloshead@gmail.com>
2299
2300         * doc/doxygen/user.cfg.in (PREDEFINED): Update macros.
2301         * include/bits/c++config (_GLIBCXX20_DEPRECATED): Make
2302         consistent with other 'deprecated' macros.
2303         * include/std/type_traits (is_pod, is_pod_v): Use
2304         _GLIBCXX20_DEPRECATED_SUGGEST instead.
2305
2306 2023-02-06  Arsen Arsenović  <arsen@aarsen.me>
2307
2308         * Makefile.am [!_GLIBCXX_HOSTED]: Enable src/ subdirectory.
2309         * Makefile.in: Regenerate.
2310         * src/Makefile.am [!_GLIBCXX_HOSTED]: Omit compatibility files.
2311         There's no history to be compatible with.
2312         * src/c++11/Makefile.am [!_GLIBCXX_HOSTED]: Omit hosted-only
2313         source files from the build.
2314         * src/c++17/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2315         * src/c++20/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2316         * src/c++98/Makefile.am [!_GLIBCXX_HOSTED]: Likewise.
2317         * src/Makefile.in: Regenerate.
2318         * src/c++11/Makefile.in: Regenerate.
2319         * src/c++17/Makefile.in: Regenerate.
2320         * src/c++20/Makefile.in: Regenerate.
2321         * src/c++98/Makefile.in: Regenerate.
2322
2323 2023-02-06  Jonathan Wakely  <jwakely@redhat.com>
2324
2325         * src/Makefile.am [GLIBCXX_HOSTED] (SUBDIRS): Do not add
2326         filesystem, libbacktrace and experimental.
2327         * src/Makefile.in: Regenerate.
2328
2329 2023-02-04  Hans-Peter Nilsson  <hp@axis.com>
2330
2331         PR libstdc++/108672
2332         * include/pstl/unseq_backend_simd.h (__simd_or): Use __INT32_TYPE__
2333         instead of int32_t.
2334
2335 2023-02-04  Gerald Pfeifer  <gerald@pfeifer.com>
2336
2337         * doc/xml/manual/documentation_hacking.xml: Adjust link to pdftex.
2338         * doc/html/manual/documentation_hacking.html: Regenerate.
2339
2340 2023-02-04  François Dumont  <fdumont@gcc.gnu.org>
2341
2342         * include/bits/basic_string.h (operator=(basic_string&&)): Transfer move-to
2343         storage to the move-from instance when allocators are equal.
2344         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc (test04):
2345         New test case.
2346
2347 2023-02-03  Samuel Thibault  <samuel.thibault@gnu.org>
2348
2349         * config/os/gnu-linux/os_defines.h [!__linux__]
2350         (_GLIBCXX_NATIVE_THREAD_ID, _GLIBCXX_GTHREAD_USE_WEAK): Do not define.
2351
2352 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2353
2354         * include/bits/ranges_algo.h (__find_last_fn, find_last):
2355         Define.
2356         (__find_last_if_fn, find_last_if): Define.
2357         (__find_last_if_not_fn, find_last_if_not): Define.
2358         * testsuite/25_algorithms/find_last/1.cc: New test.
2359         * testsuite/25_algorithms/find_last_if/1.cc: New test.
2360         * testsuite/25_algorithms/find_last_if_not/1.cc: New test.
2361
2362 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2363
2364         * include/bits/ranges_algo.h (out_value_result): Define.
2365         (iota_result): Define.
2366         (__iota_fn, iota): Define.
2367         * testsuite/25_algorithms/iota/1.cc: New test.
2368
2369 2023-02-03  Patrick Palka  <ppalka@redhat.com>
2370
2371         * include/bits/ranges_algo.h (__contains_fn, contains): Define.
2372         (__contains_subrange_fn, contains_subrange): Define.
2373         * testsuite/25_algorithms/contains/1.cc: New test.
2374         * testsuite/25_algorithms/contains_subrange/1.cc: New test.
2375
2376 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2377
2378         * doc/xml/manual/abi.xml: Tweak link to ABIcheck project.
2379         * doc/html/manual/abi.html: Regenerate.
2380
2381 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2382
2383         * src/filesystem/ops-common.h [AVR] (__unsupported): Always use
2384         errc::function_not_supported instead of errc::not_supported.
2385
2386 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2387
2388         * include/std/sstream  (basic_stringbuf::view): Define for old
2389         std::string ABI.
2390         (basic_istringstream::view, basic_0stringstream::view)
2391         (basic_stringstream::view): Likewise.
2392         * testsuite/27_io/basic_istringstream/view/char/1.cc: Remove
2393         { dg-require-effective-target cxx11_abi }.
2394         * testsuite/27_io/basic_istringstream/view/wchar_t/1.cc:
2395         Likewise.
2396         * testsuite/27_io/basic_ostringstream/view/char/1.cc: Likewise.
2397         * testsuite/27_io/basic_ostringstream/view/wchar_t/1.cc:
2398         Likewise.
2399         * testsuite/27_io/basic_stringbuf/view/char/1.cc: Likewise.
2400         * testsuite/27_io/basic_stringbuf/view/wchar_t/1.cc: Likewise.
2401         * testsuite/27_io/basic_stringstream/view/char/1.cc: Likewise.
2402         * testsuite/27_io/basic_stringstream/view/wchar_t/1.cc:
2403         Likewise.
2404
2405 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2406
2407         PR libstdc++/108636
2408         * config/abi/pre/gnu.ver (GLIBCXX_3.4.31): Export shared_ptr
2409         conversion operators for directory iterator comparisons with
2410         std::default_sentinel_t.
2411         * include/bits/fs_path.h (path::path(string_view, _Type))
2412         (path::_Cmpt::_Cmpt(string_view, _Type, size_t)): Move inline
2413         definitions to ...
2414         * src/c++17/fs_path.cc: ... here.
2415         * testsuite/27_io/filesystem/path/108636.cc: New test.
2416
2417 2023-02-02  Jonathan Wakely  <jwakely@redhat.com>
2418
2419         * include/std/variant (variant::operator=): Implement resolution
2420         of LWG 3585.
2421         * testsuite/20_util/variant/lwg3585.cc: New test.
2422
2423 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2424
2425         * doc/xml/manual/using_exceptions.xml: Update a www.open-std.org
2426         link to https.
2427         * doc/html/manual/using_exceptions.html: Regenerate.
2428
2429 2023-02-02  Gerald Pfeifer  <gerald@pfeifer.com>
2430
2431         * doc/xml/manual/debug.xml: Fix link to online GDB manual.
2432         * doc/html/manual/debug.html: Regenerate.
2433
2434 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2435
2436         * src/c++11/random.cc (random_device::_M_fini): Do not try to
2437         close the file handle if the target doesn't support the
2438         /dev/random and /dev/urandom files.
2439
2440 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2441
2442         * config/os/generic/error_constants.h (errc::value_too_large)
2443         [__AVR__]: Define.
2444         * src/c++11/system_error.cc
2445         (system_category::default_error_condition) [__AVR__]: Only match
2446         recognize values equal to EDOM, ERANGE, ENOSYS and EINTR.
2447         * src/c++17/fs_ops.cc (fs::current_path) [__AVR__]: Do not check
2448         for ENOENT etc. in switch.
2449         (fs::remove_all) [__AVR__]: Likewise.
2450         * src/filesystem/ops-common.h [__AVR__]: Do not use POSIX open,
2451         close etc.
2452
2453 2023-02-01  Jonathan Wakely  <jwakely@redhat.com>
2454
2455         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR) [avr-*-*, msp430-*-*]: Set
2456         embed_zoneinfo=no
2457         * configure: Regenerate.
2458
2459 2023-02-01  Hans-Peter Nilsson  <hp@axis.com>
2460
2461         PR testsuite/108632
2462         * testsuite/std/time/hh_mm_ss/1.cc (size): Add empty
2463         struct at end of S0.
2464
2465 2023-01-30  Gerald Pfeifer  <gerald@pfeifer.com>
2466
2467         * doc/xml/manual/shared_ptr.xml: Move links from both
2468         http://open-std.org and http://www.open-std.org to
2469         https://www.open-std.org.
2470         * doc/html/manual/memory.html: Regenerate.
2471
2472 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2473
2474         * doc/xml/manual/appendix_contributing.xml: Adjust link to
2475         ISO C++ standard at ANSI.
2476         Move link to www.open-std.org to https.
2477         * doc/html/manual/appendix_contributing.html: Regenerate.
2478
2479 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2480
2481         * doc/xml/manual/documentation_hacking.xml: Move sourceforge.net
2482         links to https.
2483         * doc/html/manual/documentation_hacking.html: Regenerate.
2484
2485 2023-01-28  Gerald Pfeifer  <gerald@pfeifer.com>
2486
2487         * doc/xml/manual/abi.xml: Update www.open-std.org link to https.
2488         * doc/html/manual/abi.html: Regenerate.
2489
2490 2023-01-27  Jakub Jelinek  <jakub@redhat.com>
2491
2492         PR libstdc++/108568
2493         * testsuite/17_intro/names.cc (__unused): For linux or GNU hurd
2494         include features.h if present and then check __GLIBC__ and
2495         __GLIBC_MINOR__ macros for glibc prior to 2.19, instead of testing
2496         __GLIBC_PREREQ which isn't defined yet.
2497
2498 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2499
2500         * src/c++20/tzdb.cc (tzdata_stream): Use constant instead of
2501         string literal.
2502
2503 2023-01-27  Jonathan Wakely  <jwakely@redhat.com>
2504
2505         PR libstdc++/108554
2506         * testsuite/23_containers/map/modifiers/108554.cc: Use dg-bogus.
2507
2508 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2509
2510         * src/c++20/tzdb.cc (operator>>(istream&, ZoneInfo&)): Allow
2511         rules named "+" for compatibility with older tzdata.zi files.
2512
2513 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2514
2515         PR libstdc++/108554
2516         * include/bits/stl_tree.h (_Rb_tree_insert_and_rebalance): Add
2517         nonnull attribute.
2518         (_Rb_tree_rebalance_for_erase): Add nonnull and returns_nonnull
2519         attributes.
2520         * testsuite/23_containers/map/modifiers/108554.cc: New test.
2521
2522 2023-01-26  Jonathan Wakely  <jwakely@redhat.com>
2523
2524         PR libstdc++/108530
2525         * src/c++20/tzdb.cc (current_zone): Look for TIMEZONE or ZONE in
2526         /etc/sysconfig/clock, not DEFAULT_TIMEZONE.
2527
2528 2023-01-26  Gerald Pfeifer  <gerald@pfeifer.com>
2529
2530         * doc/xml/manual/intro.xml: Update links to www.open-std.org to
2531         use https.
2532         * doc/html/manual/bugs.html: Regenerate.
2533
2534 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2535
2536         PR libstdc++/108530
2537         * src/c++20/tzdb.cc (current_zone): Look for DEFAULT_TIMEZONE in
2538         /etc/sysconfig/clock.
2539
2540 2023-01-24  Jonathan Wakely  <jwakely@redhat.com>
2541
2542         PR libstdc++/102301
2543         * include/bits/ranges_base.h: Include <bits/stl_iterator.h> for
2544         std::make_reverse_iterator.
2545         * include/std/tuple: Include <bits/ranges_util.h> for subrange.
2546         (make_from_tuple): Add static assertion from P2255 to diagnose
2547         dangling references.
2548         * testsuite/20_util/tuple/make_from_tuple/dangling_ref.cc: New test.
2549         * testsuite/20_util/tuple/make_from_tuple/tuple_like.cc: New test.
2550
2551 2023-01-23  François Dumont  <fdumont@gcc.gnu.org>
2552
2553         * include/debug/safe_iterator.h (_Safe_iterator<>::_Unchecked): New.
2554         (_Safe_iterator(const _Safe_iterator&, _Unchecked)): New.
2555         (_Safe_iterator::operator++(int)): Use latter.
2556         (_Safe_iterator::operator--(int)): Likewise.
2557         (_Safe_iterator(_Iterator, const _Safe_sequence_base*)): Remove !_M_insular()
2558         check.
2559         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::_Unchecked):
2560         New.
2561         (_Safe_local_iterator(const _Safe_local_iterator&, _Unchecked)): New.
2562         (_Safe_local_iterator::operator++(int)): Use latter.
2563         * src/c++11/debug.cc (_S_debug_messages): Add as comment the _Debug_msg_id
2564         entry associated to the array entry.
2565
2566 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2567
2568         * include/bits/fs_path.h (u8path): Add deprecated attribute.
2569         * testsuite/27_io/filesystem/path/construct/90281.cc: Add
2570         -Wno-deprecated-declarations for C++20 and later.
2571         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc:
2572         Likewise.
2573         * testsuite/27_io/filesystem/path/factory/u8path.cc: Likewise.
2574         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
2575         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: New test.
2576
2577 2023-01-18  Jonathan Wakely  <jwakely@redhat.com>
2578
2579         * include/bits/random.h (random_device) [!_GLIBCXX_USE_DEV_RANDOM]:
2580         Always call _M_fini and _M_getentropy.
2581
2582 2023-01-18  Gerald Pfeifer  <gerald@pfeifer.com>
2583
2584         * doc/xml/manual/policy_data_structures_biblio.xml: Adjust links
2585         to www.open-std.org to use https.
2586         (COM: Component Model Object Technologies): Rename from...
2587         (The Component Object Model): ...to.
2588         * doc/html/manual/policy_data_structures.html: Regenerate.
2589
2590 2023-01-18  Dimitrij Mijoski  <dmjpp@hotmail.com>
2591
2592         * testsuite/22_locale/codecvt/codecvt_unicode.cc: Simplify.
2593         * testsuite/22_locale/codecvt/codecvt_unicode.h: Simplify.
2594         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: Simplify.
2595
2596 2023-01-17  Jonathan Wakely  <jwakely@redhat.com>
2597
2598         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Check $target_os instead
2599         of $host. Fix check for file being present during native build.
2600         * configure: Regenerate.
2601
2602 2023-01-17  Martin Liska  <mliska@suse.cz>
2603
2604         * src/libbacktrace/Makefile.in: Regenerate.
2605
2606 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2607
2608         * src/c++20/tzdb.cc (_GLIBCXX_USE_CXX11_ABI): Define to 1.
2609
2610 2023-01-16  Jonathan Wakely  <jwakely@redhat.com>
2611
2612         PR libstdc++/108413
2613         * include/c_compatibility/stdatomic.h: Change copyright line to
2614         be consistent with other headers contributed under DCO terms.
2615         * include/std/expected: Add full stop to copyright line.
2616         * src/c++20/tzdb.cc: Likewise.
2617
2618 2023-01-15  Gerald Pfeifer  <gerald@pfeifer.com>
2619
2620         * doc/xml/manual/status_cxx2014.xml: Switch www.open-std.org to
2621         https.
2622         * doc/xml/manual/status_cxx2017.xml: Ditto.
2623         * doc/xml/manual/status_cxx2020.xml: Ditto.
2624         * doc/xml/manual/status_cxx2023.xml: Ditto.
2625         * doc/html/manual/status.html: Regenerate.
2626
2627 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2628
2629         * testsuite/std/time/tzdb_list/1.cc: Remove dg-xfail-run-if
2630         and fail gracefully if defining the weak symbol doesn't work.
2631
2632 2023-01-15  François Dumont  <fdumont@gcc.gnu.org>
2633
2634         PR libstdc++/108288
2635         * include/debug/safe_iterator.h (_Safe_iterator<>::operator++(int)): Extend deadlock
2636         fix to other iterator category.
2637         (_Safe_iterator<>::operator--(int)): Likewise.
2638         * include/debug/safe_local_iterator.h (_Safe_local_iterator<>::operator++(int)):
2639         Fix deadlock.
2640         * testsuite/util/debug/unordered_checks.h (invalid_local_iterator_pre_increment): New.
2641         (invalid_local_iterator_post_increment): New.
2642         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_post_increment_neg.cc:
2643         New test.
2644         * testsuite/23_containers/unordered_map/debug/invalid_local_iterator_pre_increment_neg.cc:
2645         New test.
2646
2647 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2648
2649         * testsuite/30_threads/jthread/jthread.cc: Remove -pthread from
2650         dg-options.
2651
2652 2023-01-15  Jonathan Wakely  <jwakely@redhat.com>
2653
2654         * testsuite/std/time/clock/utc/io.cc: Use ctype to widen char.
2655
2656 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2657
2658         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Add check for
2659         windows.h. Add pecoff as FORMAT_FILE.
2660         * config.h.in: Regenerate.
2661         * configure: Regenerate.
2662         * src/libbacktrace/Makefile.am: Regenerate.
2663         * src/libbacktrace/Makefile.in: Add pecoff.c as FORMAT_FILE.
2664
2665 2023-01-14  Björn Schäpers  <bjoern@hazardy.de>
2666
2667         * include/std/stacktrace (stacktrace_entry::_S_demangle): Use
2668         raw __name if __cxa_demangle could not demangle it.
2669
2670 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2671
2672         PR libstdc++/108409
2673         * src/c++20/tzdb.cc (current_zone()) [_AIX]: Use TZ environment
2674         variable.
2675
2676 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2677
2678         * src/c++20/tzdb.cc (TZDB_DISABLED): Disable all code for
2679         loading tzdb.
2680         * testsuite/std/time/tzdb/leap_seconds.cc: Require tzdb
2681         effective target.
2682         * testsuite/std/time/tzdb_list/1.cc: Likewise.
2683
2684 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2685
2686         * acinclude.m4 (GLIBCXX_ZONEINFO_DIR): Replace the
2687         --with-libstdcxx-zoneinfo-dir configure option with
2688         --with-libstdcxx-zoneinfo with yes/no/static choices as well as
2689         a directory.
2690         * config.h.in: Regenerate.
2691         * configure: Regenerate.
2692         * doc/xml/manual/configure.xml: Document configure option.
2693         * doc/html/manual/configure.html: Regenerate.
2694         * src/c++20/Makefile.am: Generate tzdata.zi.h header.
2695         * src/c++20/Makefile.in: Regenerate.
2696         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Return a
2697         null pointer if no directory is configured.
2698         (zoneinfo_dir): Replace with ...
2699         (zoneinfo_file): New function.
2700         (tzdata_stream): New istream class.
2701         (remote_version, reload_tzdb): Use tzdata_stream.
2702         * testsuite/lib/libstdc++.exp (check_effective_target_tzdb):
2703         Check new _GLIBCXX_STATIC_TZDATA macro and ignore presence of
2704         tzdata.zi file in default location.
2705         * src/c++20/tzdata.zi: New file.
2706
2707 2023-01-14  Jonathan Wakely  <jwakely@redhat.com>
2708
2709         * include/bits/chrono_io.h (operator<<): Fix syntax errors.
2710         * testsuite/std/time/month_day/io.cc: New test.
2711         * testsuite/std/time/month_day_last/io.cc: New test.
2712         * testsuite/std/time/month_weekday/io.cc: New test.
2713         * testsuite/std/time/month_weekday_last/io.cc: New test.
2714         * testsuite/std/time/weekday_indexed/io.cc: New test.
2715         * testsuite/std/time/weekday_last/io.cc: New test.
2716         * testsuite/std/time/year_month/io.cc: New test.
2717         * testsuite/std/time/year_month_day_last/io.cc: New test.
2718         * testsuite/std/time/year_month_weekday/io.cc: New test.
2719         * testsuite/std/time/year_month_weekday_last/io.cc: New test.
2720
2721 2023-01-14  François Dumont  <fdumont@gcc.gnu.org>
2722
2723         * include/std/format [_GLIBCXX_INLINE_VERSION](to_chars): Adapt __asm symbol
2724         specifications.
2725         * config/abi/pre/gnu-versioned-namespace.ver: Add to_chars/from_chars symbols
2726         export.
2727
2728 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2729
2730         * include/bits/std_mutex.h: Include <errno.h>.
2731
2732 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
2733
2734         * testsuite/20_util/to_chars/version.cc: Mark hosted-only.
2735         * testsuite/20_util/uses_allocator/lwg3677.cc: Ditto.
2736         * testsuite/20_util/weak_ptr/cons/self_move.cc: Ditto.
2737         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Replace usage of
2738         std::make_unique with a freestanding-compatible wrapper around
2739         unique_ptr.
2740         * testsuite/21_strings/basic_string_view/operations/contains/char.cc:
2741         Don't test for presence of __cpp_lib_string_contains on !HOSTED.
2742         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
2743         Ditto.
2744         * testsuite/std/ranges/version_c++23.cc: Don't test for presence
2745         of __cpp_lib_ranges in !HOSTED.
2746
2747 2023-01-13  Arsen Arsenović  <arsen@aarsen.me>
2748
2749         * include/Makefile.am: Install bits/char_traits.h,
2750         std/string_view
2751         * include/Makefile.in: Regenerate.
2752         * include/bits/char_traits.h: Gate hosted-only, wchar-only and
2753         mbstate-only bits behind appropriate #ifs.
2754         * include/std/string_view: Gate <iostream> functionality behind
2755         HOSTED.
2756         * include/std/version: Enable __cpp_lib_constexpr_string_view
2757         and __cpp_lib_starts_ends_with in !HOSTED.
2758         * include/std/ranges: Re-enable __is_basic_string_view on
2759         freestanding, include <string_view> directly.
2760         * include/precompiled/stdc++.h: Include <string_view> when
2761         !HOSTED too.
2762         * testsuite/20_util/function_objects/searchers.cc: Skip testing
2763         boyer_moore searchers on freestanding
2764         * testsuite/21_strings/basic_string_view/capacity/1.cc: Guard
2765         <string>-related tests behind __STDC_HOSTED__.
2766         * testsuite/21_strings/basic_string_view/cons/char/1.cc: Ditto.
2767         * testsuite/21_strings/basic_string_view/cons/char/2.cc: Remove
2768         unused <stdexcept> include.
2769         * testsuite/21_strings/basic_string_view/cons/char/3.cc: Remove
2770         unused <vector> include.
2771         * testsuite/21_strings/basic_string_view/cons/char/range.cc:
2772         Guard <string> related testing behind __STDC_HOSTED__.
2773         * testsuite/21_strings/basic_string_view/cons/wchar_t/1.cc:
2774         Guard <stdexcept> related tests behind __STDC_HOSTED__.
2775         * testsuite/21_strings/basic_string_view/element_access/char/1.cc:
2776         Ditto.
2777         * testsuite/21_strings/basic_string_view/element_access/wchar_t/1.cc:
2778         Guard <stdexcept> tests behind __STDC_HOSTED__.
2779         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc:
2780         Enable test on freestanding, guard <stdexcept> bits behind
2781         __STDC_HOSTED__.
2782         * testsuite/21_strings/basic_string_view/operations/substr/char.cc:
2783         Guard <stdexcept> bits behind __STDC_HOSTED__.
2784         * testsuite/21_strings/basic_string_view/operations/substr/wchar_t.cc:
2785         Ditto.
2786
2787 2023-01-13  Dimitrij Mijoski  <dmjpp@hotmail.com>
2788
2789         PR libstdc++/86419
2790         * src/c++11/codecvt.cc (read_utf8_code_point): Correctly detect
2791         errors in incomplete multibyte sequences.
2792         (utf16_in): Remove surrogates parameter. Fix conditions for
2793         returning partial.
2794         (utf16_out): Fix condition for returning partial.
2795         (ucs2_in): Do not pass surrogates argument to utf16_in.
2796         * testsuite/22_locale/codecvt/codecvt_unicode.cc: New test.
2797         * testsuite/22_locale/codecvt/codecvt_unicode.h: New header for
2798         tests.
2799         * testsuite/22_locale/codecvt/codecvt_unicode_wchar_t.cc: New
2800         test.
2801
2802 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2803
2804         PR libstdc++/108331
2805         * config/io/c_io_stdio.h (__c_lock): Define as a typedef for
2806         __GTHREAD_LEGACY_MUTEX_T if defined.
2807
2808 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2809
2810         PR libstdc++/108327
2811         * config/os/gnu-linux/ldbl-extra.ver (GLIBCXX_LDBL_3.4.31):
2812         Export __try_use_facet specializations for facets in namespace
2813         __gnu_cxx_ldbl128.
2814         * config/os/gnu-linux/ldbl-ieee128-extra.ver
2815         (GLIBCXX_IEEE128_3.4.31): Likewise for facets in namespace
2816         __gnu_cxx_ieee128.
2817         * testsuite/util/testsuite_abi.cc: Add to lists of known and
2818         latest versions.
2819
2820 2023-01-13  Jonathan Wakely  <jwakely@redhat.com>
2821
2822         * include/bits/std_mutex.h: Remove <system_error> include.
2823         * include/std/condition_variable: Add <bits/error_constants.h>
2824         include.
2825         * include/std/mutex: Likewise.
2826         * include/std/shared_mutex: Likewise.
2827
2828 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2829
2830         PR libstdc++/77691
2831         * include/experimental/memory_resource
2832         (_GLIBCXX_MAX_ALIGN_MATCHES_MALLOC): Define.
2833         (do_allocate, do_deallocate): Check it.
2834         * testsuite/experimental/memory_resource/new_delete_resource.cc:
2835         Relax expected behaviour for 64-bit hppa-hp-hpux11.11.
2836
2837 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2838
2839         * doc/xml/manual/abi.xml: Add latest library versions.
2840         * doc/html/manual/abi.html: Regenerate.
2841
2842 2023-01-12  François Dumont  <fdumont@gcc.gnu.org>
2843
2844         PR libstdc++/107189
2845         * include/bits/stl_tree.h (_Rb_tree<>::_M_insert_range_equal): Remove
2846         unused _Alloc_node instance.
2847
2848 2023-01-12  Jonathan Wakely  <jwakely@redhat.com>
2849
2850         * include/bits/atomic_wait.h (__detail::__platform_wait_t):
2851         Define as unsigned long if always lock-free, and unsigned int
2852         otherwise.
2853
2854 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2855
2856         * src/c++20/tzdb.cc (tzdb_list::_S_init_tzdb): Use __try and
2857         __catch macros for exception handling.
2858
2859 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2860
2861         PR libstdc++/108221
2862         * include/bits/stl_algobase.h (__lg): Replace six overloads with
2863         a single function template for all integer types.
2864         * include/bits/stl_algo.h (__merge_adaptive_resize): Cast
2865         arithmetic results back to _Distance.
2866
2867 2023-01-10  Jonathan Wakely  <jwakely@redhat.com>
2868
2869         PR libstdc++/108221
2870         * include/std/span (span::span()): Un-simplify constraint to
2871         work for size_t of lesser rank than int.
2872
2873 2023-01-07  LIU Hao  <lh_mouse@126.com>
2874
2875         PR middle-end/108300
2876         * src/c++11/system_error.cc: Define `WIN32_LEAN_AND_MEAN` before
2877         <windows.h>.
2878         * src/c++11/thread.cc: Likewise.
2879         * src/c++17/fs_ops.cc: Likewise.
2880         * src/filesystem/ops.cc: Likewise.
2881
2882 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2883
2884         PR libstdc++/108228
2885         * src/c++20/tzdb.cc (zoneinfo_dir): Add diagnostic pragma.
2886
2887 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2888
2889         PR libstdc++/108235
2890         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): New class
2891         template and partial specialization for synchronizing access to
2892         time_zone::_Impl::infos.
2893         (time_zone::_M_get_sys_info, reload_tzdb): Adjust uses of
2894         rules_counter.
2895
2896 2023-01-06  Patrick Palka  <ppalka@redhat.com>
2897
2898         PR libstdc++/108260
2899         * include/bits/utility.h (__cpp_lib_ranges_zip): Define for C++23.
2900         * include/std/ranges (__cpp_lib_ranges_zip): Likewise.
2901         (__cpp_lib_ranges_chunk): Likewise.
2902         (__cpp_lib_ranges_slide): Likewise.
2903         (__cpp_lib_ranges_chunk_by): Likewise.
2904         (__cpp_lib_ranges_join_with): Likewise.
2905         (__cpp_lib_ranges_repeat): Likewise.
2906         (__cpp_lib_ranges_stride): Likewise.
2907         (__cpp_lib_ranges_cartesian_product): Likewise.
2908         (__cpp_lib_ranges_as_rvalue): Likewise.
2909         * include/std/version: Ditto.
2910         * testsuite/20_util/tuple/p2321r2.cc: Verify value of
2911         feature-test macro.
2912         * testsuite/std/ranges/adaptors/as_rvalue/1.cc: Likewise.
2913         * testsuite/std/ranges/adaptors/chunk/1.cc: Likewise.
2914         * testsuite/std/ranges/adaptors/chunk_by/1.cc: Likewise.
2915         * testsuite/std/ranges/adaptors/join_with/1.cc: Likewise.
2916         * testsuite/std/ranges/adaptors/slide/1.cc: Likewise.
2917         * testsuite/std/ranges/adaptors/stride/1.cc: Likewise.
2918         * testsuite/std/ranges/cartesian_product/1.cc: Likewise.
2919         * testsuite/std/ranges/repeat/1.cc: Likewise.
2920         * testsuite/std/ranges/zip/1.cc: Likewise.
2921         * testsuite/std/ranges/version_c++23.cc: New test.
2922
2923 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2924
2925         PR libstdc++/108214
2926         * include/std/bitset (operator>>): Use alloca in the right
2927         scope, not in a constructor.
2928         * testsuite/20_util/bitset/io/input.cc: Check case from PR.
2929
2930 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2931
2932         PR libstdc++/108221
2933         * include/std/format (basic_format_arg) [!__cpp_lib_to_chars]:
2934         Disable visiting floating-point types.
2935
2936 2023-01-06  Jonathan Wakely  <jwakely@redhat.com>
2937
2938         PR libstdc++/108288
2939         * include/debug/safe_iterator.h (_Safe_iterator::operator++(int))
2940         (_Safe_iterator::operator--(int)): Do not hold lock around
2941         construction of return value.
2942
2943 2023-01-05  John David Anglin  <danglin@gcc.gnu.org>
2944
2945         * config/cpu/hppa/atomicity.h (_PA_LDCW_INSN): Define.
2946         (__exchange_and_add): Use _PA_LDCW_INSN.  Use ordered store for
2947         lock release.  Revise loop.
2948         (__atomic_add): Likewise.
2949
2950 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2951
2952         PR libstdc++/108212
2953         * python/libstdcxx/v6/printers.py (_utc_timezone): New global
2954         variable.
2955         (StdChronoTimePointPrinter::to_string): Use it.
2956
2957 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2958
2959         PR libstdc++/108290
2960         * include/std/functional (_Bind_front): Add no_unique_address
2961         attribute to data members.
2962         * testsuite/20_util/function_objects/bind_front/107784.cc: Check
2963         size of call wrappers with empty types for targets and bound
2964         arguments.
2965
2966 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2967
2968         PR libstdc++/108211
2969         * src/c++20/tzdb.cc (chrono::current_zone()): Check for zone
2970         using only last component of the name.
2971
2972 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2973
2974         PR libstdc++/108228
2975         PR libstdc++/108235
2976         * config/abi/pre/gnu.ver: Move zoneinfo_dir_override export to
2977         the latest symbol version.
2978         * src/c++20/tzdb.cc (USE_ATOMIC_SHARED_PTR): Define to 0 if
2979         atomic<_Node*> is not always lock free.
2980         (USE_ATOMIC_LIST_HEAD): New macro.
2981         [__hpux__] (__gnu_cxx::zoneinfo_dir_override()): Provide
2982         definition of weak symbol.
2983         (tzdb_list::_Node::_S_head): Rename to _S_head_cache.
2984         (tzdb_list::_Node::_S_list_head): New function for accessing
2985         list head efficiently.
2986         (tzdb_list::_Node::_S_cache_list_head): New function for
2987         updating _S_list_head.
2988
2989 2023-01-05  Jonathan Wakely  <jwakely@redhat.com>
2990
2991         PR libstdc++/108265
2992         * include/std/chrono (hh_mm_ss): Do not use chrono::abs if
2993         duration rep is unsigned.
2994         * testsuite/std/time/hh_mm_ss/1.cc: Check unsigned rep.
2995
2996 2023-01-04  Iain Sandoe  <iain@sandoe.co.uk>
2997
2998         PR libstdc++/108228
2999         * config/abi/pre/gnu.ver (GLIBCXX_3.4):
3000         Add __gnu_cxx::zoneinfo_dir_override().
3001
3002 2023-01-04  Jonathan Wakely  <jwakely@redhat.com>
3003
3004         PR libstdc++/108258
3005         * include/std/array (__array_traits<T, 0>::operator T*()): Add
3006         constexpr.
3007         * testsuite/23_containers/array/element_access/constexpr_c++17.cc: Check
3008         std::array<T, 0>::data().
3009
3010 \f
3011 Copyright (C) 2023 Free Software Foundation, Inc.
3012
3013 Copying and distribution of this file, with or without modification,
3014 are permitted in any medium without royalty provided the copyright
3015 notice and this notice are preserved.