libstdc++-v3/ChangeLog

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