libstdc++-v3/ChangeLog

   1 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/115585
   4         * src/c++11/assert_fail.cc (__glibcxx_assert_fail): Add
   5         definition for non-verbose builds.
   6
   7 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
   8
   9         PR libstdc++/101485
  10         * include/bits/stl_algobase.h (__equal_aux1): Check for
  11         std::byte as well.
  12         * testsuite/25_algorithms/equal/101485.cc: New test.
  13
  14 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
  15
  16         PR libstdc++/104395
  17         * include/bits/new_allocator.h: Disable extended alignment
  18         support in C++98 mode.
  19         * include/bits/stl_tempbuf.h: Likewise.
  20         * include/ext/bitmap_allocator.h: Likewise.
  21         * include/ext/malloc_allocator.h: Likewise.
  22         * include/ext/mt_allocator.h: Likewise.
  23         * include/ext/pool_allocator.h: Likewise.
  24         * testsuite/ext/104395.cc: New test.
  25
  26 2024-06-28  Jonathan Wakely  <jwakely@redhat.com>
  27
  28         * include/ext/aligned_buffer.h (__aligned_membuf): Use
  29         alignas(T) directly instead of defining a struct and using 9its
  30         alignment.
  31         (__aligned_buffer): Remove use of std::aligned_storage.
  32         * testsuite/abi/aligned_buffers.cc: New test.
  33
  34 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
  35
  36         PR libstdc++/37475
  37         * config/locale/gnu/codecvt_members.cc (Guard): New RAII type.
  38         (do_out, do_in): Return partial if the destination is empty but
  39         the source is not. Use Guard to restore locale on scope exit.
  40         Return immediately on any conversion error.
  41         (do_encoding, do_max_length, do_length): Use Guard.
  42         * testsuite/22_locale/codecvt/in/char/37475.cc: New test.
  43         * testsuite/22_locale/codecvt/in/wchar_t/37475.cc: New test.
  44         * testsuite/22_locale/codecvt/out/char/37475.cc: New test.
  45         * testsuite/22_locale/codecvt/out/wchar_t/37475.cc: New test.
  46
  47 2024-06-27  Alexandre Oliva  <oliva@adacore.com>
  48
  49         PR libstdc++/115454
  50         * testsuite/experimental/simd/pr115454_find_last_set.cc: Defer
  51         to check_vect_support_and_set_flags's default dg-do action.
  52
  53 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
  54
  55         PR libstdc++/115668
  56         * include/bits/chrono_io.h (formatter<duration<R,P, C>::format):
  57         Do not use chrono::abs.
  58         * testsuite/20_util/duration/io.cc: Check formatting a duration
  59         with unsigned rep.
  60
  61 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
  62
  63         PR libstdc++/103191
  64         * include/bits/stl_bvector.h (vector<bool>::operator[])
  65         (vector<bool>::front, vector<bool>::back): Add debug assertions.
  66         * testsuite/23_containers/vector/bool/element_access/constexpr.cc:
  67         Remove dg-error that no longer triggers.
  68
  69 2024-06-27  Jonathan Wakely  <jwakely@redhat.com>
  70
  71         PR libstdc++/111250
  72         * include/debug/assertions.h (__glibcxx_requires_non_empty_range)
  73         (__glibcxx_requires_nonempty, __glibcxx_requires_subscript):
  74         Define to __glibcxx_assert expressions or to debug mode
  75         __glibcxx_check_xxx expressions.
  76         * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
  77         Add checks for out-of-bounds accesses in constant expressions.
  78         * testsuite/23_containers/vector/element_access/constexpr.cc:
  79         Likewise.
  80
  81 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
  82
  83         * scripts/update_release_branch.sh: New file.
  84
  85 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
  86
  87         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590.cc:
  88         Copy defaulted assignment operator from 808590-cxx11.cc to
  89         suppress a warning.
  90         * testsuite/20_util/specialized_algorithms/uninitialized_copy/808590-cxx11.cc:
  91         Removed.
  92
  93 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
  94
  95         PR libstdc++/90276
  96         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
  97         Increase timeout for debug mode.
  98         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc:
  99         Likewise.
 100         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc:
 101         Likewise.
 102         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
 103         Likewise.
 104         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc:
 105         Likewise.
 106         * testsuite/25_algorithms/pstl/alg_sorting/set_symmetric_difference.cc:
 107         Likewise.
 108
 109 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
 110
 111         PR libstdc++/90276
 112         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc
 113         [_GLIBCXX_DEBUG]: Add xfail-run-if for debug mode.
 114         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc
 115         [_GLIBCXX_DEBUG]: Reduce size of test data.
 116         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc:
 117         Likewise.
 118         * testsuite/25_algorithms/pstl/alg_sorting/set_util.h:
 119         Likewise.
 120
 121 2024-06-26  Jonathan Wakely  <jwakely@redhat.com>
 122
 123         * src/c++20/tzdb.cc (minmax_year, minmax_year2): Remove.
 124         (years_from_to): New class replacing minmax_year and
 125         minmax_year2.
 126         (format_abbrev_str, select_std_or_dst_abbrev): Move earlier in
 127         the file. Handle "-" for letters.
 128         (ZoneInfo::to): Use format_abbrev_str to expand %z.
 129         (ZoneInfo::set_abbrev): Remove exception. Change parameter from
 130         reference to value.
 131         (operator>>(istream&, Rule&)): Do not clear letters when it
 132         contains "-".
 133         (time_zone::_M_get_sys_info): Add missing logic to find the Rule
 134         in effect before the time point.
 135         * testsuite/std/time/tzdb/1.cc: Adjust for vanguard format using
 136         "GMT" as the Zone name, not as a Link to "Etc/GMT".
 137         * testsuite/std/time/time_zone/sys_info_abbrev.cc: New test.
 138
 139 2024-06-26  Alexandre Oliva  <oliva@adacore.com>
 140             Marc Poulhiès  <poulhies@adacore.com>
 141
 142         * testsuite/lib/dg-options.exp (add_options_for_libatomic):
 143         None for *-*-vxworks*.
 144
 145 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
 146
 147         * include/bits/valarray_array.h (_Array_default_ctor): Remove.
 148         (__valarray_default_construct): Inline it into here.
 149         (_Array_init_ctor): Remove.
 150         (__valarray_fill_construct): Inline it into here.
 151         (_Array_copy_ctor): Remove.
 152         (__valarray_copy_construct(const T*, const T*, T*)): Inline it
 153         into here.
 154         (__valarray_copy_construct(const T*, size_t, size_t, T*)):
 155         Use _GLIBCXX17_CONSTEXPR for constant condition.
 156
 157 2024-06-25  Jonathan Wakely  <jwakely@redhat.com>
 158
 159         * doc/xml/faq.xml: Replace viewcvs links with cgit links.
 160         * doc/xml/manual/allocator.xml: Likewise.
 161         * doc/xml/manual/mt_allocator.xml: Likewise.
 162         * doc/html/*: Regenerate.
 163
 164 2024-06-22  Gerald Pfeifer  <gerald@pfeifer.com>
 165
 166         * doc/xml/manual/debug.xml: Move gcc.gnu.org link to https.
 167         Ditto for sourceware.org links.
 168         * doc/html/manual/debug.html: Regenerate.
 169
 170 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 171
 172         PR libstdc++/115497
 173         * include/bits/cpp_type_traits.h (__is_pointer, __is_scalar):
 174         Remove.
 175         (__is_arithmetic): Do not use __is_pointer in the primary
 176         template. Add partial specialization for pointers.
 177
 178 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 179
 180         PR libstdc++/115497
 181         * include/bits/cpp_type_traits.h (__is_void): Remove.
 182         * include/debug/helper_functions.h (_Distance_traits):
 183         Adjust partial specialization to match void directly, instead of
 184         using __is_void<T>::__type and matching __true_type.
 185
 186 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 187
 188         PR libstdc++/115497
 189         * include/bits/deque.tcc (__lex_cmp_dit): Replace __is_pointer
 190         class template with __is_pointer(T) built-in.
 191         (__lexicographical_compare_aux1): Likewise.
 192         * include/bits/stl_algobase.h (__equal_aux1): Likewise.
 193         (__lexicographical_compare_aux1): Likewise.
 194
 195 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 196
 197         PR libstdc++/115497
 198         * include/bits/valarray_array.h (__valarray_default_construct):
 199         Use __is_trivial(_Tp). instead of __is_scalar<_Tp>.
 200
 201 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 202
 203         PR libstdc++/109150
 204         * include/bits/stl_algobase.h (__fill_a1): Combine the
 205         !__is_scalar and __is_scalar overloads into one and rewrite the
 206         condition used to decide whether to perform the load outside the
 207         loop.
 208         * testsuite/25_algorithms/fill/109150.cc: New test.
 209         * testsuite/25_algorithms/fill_n/109150.cc: New test.
 210
 211 2024-06-21  Matthias Kretz  <m.kretz@gsi.de>
 212
 213         PR libstdc++/115575
 214         * testsuite/experimental/simd/pr115454_find_last_set.cc: Require
 215         avx512f_runtime. Don't memcpy fixed_size masks.
 216
 217 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 218
 219         * include/bits/stl_uninitialized.h (uninitialized_default_construct)
 220         (uninitialized_default_construct_n, uninitialized_value_construct)
 221         (uninitialized_value_construct_n): Qualify calls to prevent ADL.
 222
 223 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 224
 225         * include/std/any (any_cast(any*), any_cast(const any*)): Add
 226         static assertion to reject void types, as per LWG 3305.
 227         * testsuite/20_util/any/misc/lwg3305.cc: New test.
 228
 229 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 230
 231         * include/bits/memory_resource.h (polymorphic_allocator::destroy):
 232         Remove deprecated attribute.
 233
 234 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 235
 236         * include/backward/backward_warning.h: Adjust comments to
 237         suggest <spanstream> as another alternative to <strstream>.
 238         * include/backward/strstream (strstreambuf, istrstream)
 239         (ostrstream, strstream): Add deprecated attribute.
 240
 241 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 242
 243         * include/bits/locale_conv.h (wstring_convert): Add deprecated
 244         attribute for C++17 and later.
 245         (wbuffer_convert): Likewise.
 246         * testsuite/22_locale/codecvt/codecvt_utf16/79980.cc: Disable
 247         deprecated warnings.
 248         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Likewise.
 249         * testsuite/22_locale/codecvt/codecvt_utf8_utf16/79511.cc:
 250         Likewise.
 251         * testsuite/22_locale/conversions/buffer/1.cc: Add dg-warning.
 252         * testsuite/22_locale/conversions/buffer/2.cc: Likewise.
 253         * testsuite/22_locale/conversions/buffer/3.cc: Likewise.
 254         * testsuite/22_locale/conversions/buffer/requirements/typedefs.cc:
 255         Likewise.
 256         * testsuite/22_locale/conversions/string/1.cc: Likewise.
 257         * testsuite/22_locale/conversions/string/2.cc: Likewise.
 258         * testsuite/22_locale/conversions/string/3.cc: Likewise.
 259         * testsuite/22_locale/conversions/string/66441.cc: Likewise.
 260         * testsuite/22_locale/conversions/string/requirements/typedefs-2.cc:
 261         Likewise.
 262         * testsuite/22_locale/conversions/string/requirements/typedefs.cc:
 263         Likewise.
 264
 265 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 266
 267         * include/bits/version.def (chrono): Add cxx11abi = yes.
 268         * include/bits/version.h: Regenerate.
 269         * testsuite/std/time/syn_c++20.cc: Adjust expected value for
 270         the feature test macro.
 271
 272 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 273
 274         PR libstdc++/115522
 275         * include/std/array (to_array): Workaround the fact that
 276         std::is_trivial is not sufficient to check that a type is
 277         trivially default constructible and assignable.
 278         * testsuite/23_containers/array/creation/115522.cc: New test.
 279
 280 2024-06-21  Jonathan Wakely  <jwakely@redhat.com>
 281
 282         * testsuite/util/testsuite_allocator.h (tracker_allocator):
 283         Initialize base class in copy constructor.
 284
 285 2024-06-20  Matthias Kretz  <m.kretz@gsi.de>
 286
 287         PR libstdc++/115454
 288         * include/experimental/bits/simd_x86.h (_S_not_equal_to): Use
 289         neq comparison instead of bitwise negation after eq.
 290         (_S_find_last_set): Clear unused high bits before computing
 291         bit_width.
 292         * testsuite/experimental/simd/pr115454_find_last_set.cc: New
 293         test.
 294
 295 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
 296
 297         * include/std/future: Adjust whitespace to use tabs for
 298         indentation.
 299
 300 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
 301
 302         * include/std/future (_State_baseV2::_Setter<R, void>): Add
 303         noexcept to call operator.
 304         (_State_baseV2::_Setter<R, __exception_ptr_tag>): Likewise.
 305
 306 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
 307
 308         * include/bits/stl_pair.h [__cpp_lib_concepts] (pair()): Add
 309         conditional noexcept.
 310
 311 2024-06-19  Jonathan Wakely  <jwakely@redhat.com>
 312
 313         * include/bits/stl_tempbuf.h (__get_temporary_buffer): Cast
 314         argument to size_t to handle negative values and suppress
 315         -Wsign-compare warning.
 316         (_Temporary_buffer): Move diagnostic pragmas to new location of
 317         call to std::get_temporary_buffer.
 318
 319 2024-06-18  Jonathan Wakely  <jwakely@redhat.com>
 320
 321         * include/bits/cpp_type_traits.h: Fix outdated comment about the
 322         number of standard integer types.
 323
 324 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
 325
 326         PR libstdc++/110572
 327         * libsupc++/typeinfo (type_info::operator==): Add always_inline
 328         attribute for targets where the ABI requries equality to be
 329         non-inline.
 330         * testsuite/18_support/type_info/110572.cc: New test.
 331
 332 2024-06-14  Jonathan Wakely  <jwakely@redhat.com>
 333
 334         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Fix declaration of
 335         posix_memalign.
 336
 337 2024-06-13  Alexandre Oliva  <oliva@adacore.com>
 338
 339         PR libstdc++/114359
 340         * testsuite/26_numerics/random/binomial_distribution/114359.cc:
 341         Require cmath.
 342
 343 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 344
 345         * include/std/type_traits (__add_rval_ref_t): Use
 346         __add_rvalue_reference built-in trait.
 347
 348 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 349
 350         * include/std/type_traits (__add_lval_ref_t): Use
 351         __add_lvalue_reference built-in trait.
 352
 353 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 354             Jonathan Wakely  <jwakely@redhat.com>
 355
 356         * include/bits/cpp_type_traits.h (__is_pointer): Use
 357         __is_pointer built-in trait.
 358         * include/std/type_traits (is_pointer): Likewise.  Optimize its
 359         implementation.
 360         (is_pointer_v): Likewise.
 361
 362 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
 363
 364         * include/bits/ranges_base.h (range_common_reference_t): New
 365         alias template, as per LWG 3860.
 366         * testsuite/std/ranges/range.cc: Check it.
 367
 368 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
 369
 370         * include/bits/ranges_base.h (const_iterator_t): Change
 371         preprocessor condition to use __glibcxx_ranges_as_const.
 372         (const_sentinel_t, range_const_reference_t): Likewise.
 373         (__access::__possibly_const_range, cbegin, cend, crbegin)
 374         (crend, cdata): Likewise.
 375         * include/bits/stl_iterator.h (iter_const_reference_t)
 376         (basic_const_iterator, const_iterator, const_sentinel)
 377         (make_const_iterator): Likewise.
 378
 379 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
 380
 381         PR libstdc++/115420
 382         * include/bits/hashtable.h (_Hashtable): Add static_assert to
 383         check that hash function is copy constructible.
 384         * testsuite/23_containers/unordered_map/115420.cc: New test.
 385
 386 2024-06-13  Jonathan Wakely  <jwakely@redhat.com>
 387
 388         PR libstdc++/113376
 389         * include/pstl/pstl_config.h: Use #if instead of #ifdef to test
 390         the _PSTL_USAGE_WARNINGS macro.
 391
 392 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 393
 394         * include/std/type_traits (is_nothrow_invocable): Use
 395         __is_nothrow_invocable built-in trait.
 396         * testsuite/20_util/is_nothrow_invocable/incomplete_args_neg.cc:
 397         Handle the new error from __is_nothrow_invocable.
 398         * testsuite/20_util/is_nothrow_invocable/incomplete_neg.cc:
 399         Likewise.
 400
 401 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 402
 403         * include/std/type_traits (is_invocable): Use __is_invocable
 404         built-in trait.
 405         * testsuite/20_util/is_invocable/incomplete_args_neg.cc: Handle
 406         the new error from __is_invocable.
 407         * testsuite/20_util/is_invocable/incomplete_neg.cc: Likewise.
 408
 409 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 410
 411         * include/std/type_traits (rank): Use __array_rank built-in
 412         trait.
 413         (rank_v): Likewise.
 414
 415 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 416
 417         * include/std/type_traits (decay): Use __decay built-in trait.
 418
 419 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 420
 421         * include/std/type_traits (remove_all_extents): Use
 422         __remove_all_extents built-in trait.
 423
 424 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 425
 426         * include/std/type_traits (remove_extent): Use __remove_extent
 427         built-in trait.
 428
 429 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 430
 431         * include/std/type_traits (add_pointer): Use __add_pointer
 432         built-in trait.
 433
 434 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 435
 436         * include/std/type_traits (is_unbounded_array_v): Use
 437         __is_unbounded_array built-in trait.
 438
 439 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 440
 441         * include/std/type_traits (is_volatile): Use __is_volatile
 442         built-in trait.
 443         (is_volatile_v): Likewise.
 444
 445 2024-06-13  Ken Matsui  <kmatsui@gcc.gnu.org>
 446
 447         * include/std/type_traits (is_const): Use __is_const built-in
 448         trait.
 449         (is_const_v): Likewise.
 450
 451 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
 452
 453         * testsuite/26_numerics/headers/cmath/constexpr_std_c++23.cc:
 454         Require cmath.
 455         * testsuite/26_numerics/headers/cmath/functions_std_c++23.cc:
 456         Likewise.
 457         * testsuite/26_numerics/headers/cmath/nextafter_c++23.cc:
 458         Likewise.
 459
 460 2024-06-12  Alexandre Oliva  <oliva@adacore.com>
 461
 462         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
 463         on aarch64-rtems*.
 464         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
 465         aarch64-rtems*.
 466
 467 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
 468
 469         PR libstdc++/115399
 470         * include/tr2/dynamic_bitset (operator>>=): Remove redundant
 471         call to _M_do_sanitize.
 472         * include/tr2/dynamic_bitset.tcc (_M_do_left_shift): Zero out
 473         low bits in words that should no longer be populated.
 474         (_M_do_right_shift): Likewise for high bits.
 475         * testsuite/tr2/dynamic_bitset/pr115399.cc: New test.
 476
 477 2024-06-12  Jonathan Wakely  <jwakely@redhat.com>
 478
 479         * include/bits/hashtable.h (_Hashtable::clear): Do not use
 480         memset to zero out bucket pointers.
 481         (_Hashtable::_M_assign_elements): Likewise.
 482
 483 2024-06-11  Jonathan Wakely  <jwakely@redhat.com>
 484
 485         * include/std/chrono (leap_seconds): Add comment.
 486         * testsuite/std/time/leap_seconds/io.cc: New test.
 487
 488 2024-06-10  François Dumont  <fdumont@gcc.gnu.org>
 489
 490         * include/bits/hashtable.h (~_Hashtable()): Replace clear call with
 491         a _M_deallocate_nodes call.
 492
 493 2024-06-08  Deev Patel  <dkp10000@gmail.com>
 494             Jonathan Wakely  <jwakely@redhat.com>
 495
 496         * include/bits/atomic_base.h (__atomic_impl::__clear_padding):
 497         Add missing constexpr specifier.
 498         * testsuite/29_atomics/atomic_float/constinit.cc: New test.
 499
 500 2024-06-08  Michael Levine  <mlevine55@bloomberg.net>
 501
 502         PR libstdc++/108760
 503         * include/bits/ranges_algo.h (ranges::out_value_result):
 504         Move to <bits/ranges_algobase.h>.
 505         (ranges::iota_result, ranges::__iota_fn, ranges::iota): Move to
 506         <numeric>.
 507         * include/bits/ranges_algobase.h (ranges::out_value_result):
 508         Move to here.
 509         * include/std/numeric (ranges::iota_result, ranges::__iota_fn)
 510         (ranges::iota): Move to here.
 511         * testsuite/25_algorithms/iota/1.cc: Renamed to ...
 512         * testsuite/26_numerics/iota/2.cc: ... here.
 513
 514 2024-06-08  Jonathan Wakely  <jwakely@redhat.com>
 515
 516         * include/std/algorithm: Define __glibcxx_want_ranges.
 517         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Check
 518         feature test macro in C++20 mode.
 519
 520 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
 521
 522         * include/bits/ranges_algobase.h: Include <bits/stl_algobase.h>.
 523
 524 2024-06-07  Alexandre Oliva  <oliva@adacore.com>
 525
 526         * include/std/variant: Drop obsolete workaround.
 527
 528 2024-06-07  Jonathan Wakely  <jwakely@redhat.com>
 529
 530         * include/bits/ptr_traits.h (to_address): Optimize.
 531         * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error text.
 532
 533 2024-06-06  Alexandre Oliva  <oliva@adacore.com>
 534
 535         * include/bits/c++config (_GLIBCXX_CLANG): Define or undefine.
 536         * include/bits/locale_facets_nonio.tcc: Test for it.
 537         * include/bits/stl_bvector.h: Likewise.
 538         * include/c_compatibility/stdatomic.h: Likewise.
 539         * include/experimental/bits/simd.h: Likewise.
 540         * include/experimental/bits/simd_builtin.h: Likewise.
 541         * include/experimental/bits/simd_detail.h: Likewise.
 542         * include/experimental/bits/simd_x86.h: Likewise.
 543         * include/experimental/simd: Likewise.
 544         * include/std/complex: Likewise.
 545         * include/std/ranges: Likewise.
 546         * include/std/variant: Likewise.
 547         * include/pstl/pstl_config.h: Likewise.
 548
 549 2024-06-05  Gerald Pfeifer  <gerald@pfeifer.com>
 550
 551         * doc/xml/faq.xml: Move gcc.gnu.org to https.
 552         * doc/html/faq.html: Regenerate.
 553
 554 2024-06-04  Jonathan Wakely  <jwakely@redhat.com>
 555
 556         PR libstdc++/115335
 557         * include/std/span (span::at): Guard with feature test macro.
 558
 559 2024-06-04  Matthias Kretz  <m.kretz@gsi.de>
 560
 561         PR libstdc++/115308
 562         * include/experimental/bits/simd.h (__int_for_sizeof): Remove
 563         special cases for __clang__.
 564         (_SimdWrapper): Change constructor overload set to allow
 565         conversion from vector types with integral conversions via bit
 566         reinterpretation.
 567
 568 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
 569
 570         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
 571         Use __detail::__get_temporary_buffer.
 572         (basic_stacktrace::_Impl::_M_deallocate): Use
 573         __detail::__return_temporary_buffer.
 574
 575 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
 576
 577         PR libstdc++/105258
 578         * include/bits/stl_tempbuf.h (__detail::__get_temporary_buffer):
 579         New function to do allocation for get_temporary_buffer, with
 580         extended alignment support.
 581         (__detail::__return_temporary_buffer): Support extended
 582         alignment.
 583         (get_temporary_buffer): Use __get_temporary_buffer.
 584         (return_temporary_buffer): Support extended alignment. Add
 585         deprecated attribute.
 586         (_Temporary_buffer): Move allocation and deallocation into a
 587         subobject and remove try-catch block in constructor.
 588         (__uninitialized_construct_buf): Use argument deduction for
 589         value type.
 590         * testsuite/20_util/temporary_buffer.cc: Add dg-warning for new
 591         deprecated warning.
 592         * testsuite/25_algorithms/stable_sort/overaligned.cc: New test.
 593
 594 2024-06-03  François Dumont  <frs.dumont@gmail.com>
 595
 596         PR libstdc++/109849
 597         * include/bits/vector.tcc
 598         (std::vector<>::_M_range_insert(iterator, _FwdIt, _FwdIt,
 599         forward_iterator_tag))[__cplusplus < 201103L]: Add __builtin_unreachable
 600         expression to tell the compiler that the allocated buffer is large enough to
 601         receive current elements plus the elements of the range to insert.
 602
 603 2024-06-03  Jonathan Wakely  <jwakely@redhat.com>
 604
 605         * include/std/string_view (starts_with(basic_string_view)):
 606         Compare lengths first and then call traits_type::compare
 607         directly.
 608
 609 2024-06-02  Gerald Pfeifer  <gerald@pfeifer.com>
 610
 611         * doc/xml/api.xml: Move gcc.gnu.org links to https.
 612         * doc/html/api.html: Regenerate.
 613
 614 2024-06-01  Jonathan Wakely  <jwakely@redhat.com>
 615
 616         PR libstdc++/115269
 617         * doc/xml/manual/using.xml: Replace link to gcc-4.3.2 docs.
 618         Replace list of -std=... options with a single entry for -std.
 619         * doc/html/manual/using.html: Regenerate.
 620
 621 2024-05-30  Alexandre Oliva  <oliva@adacore.com>
 622
 623         * configure.ac [*-*-rtems*]: Set chdir, chmod and mkdir as
 624         available.
 625         * configure: Rebuilt.
 626
 627 2024-05-29  François Dumont  <fdumont@gcc.gnu.org>
 628
 629         * include/bits/vector.tcc (_Guard): Move all the nested duplicated class...
 630         * include/bits/stl_vector.h (_Guard_alloc): ...here and rename.
 631         (_M_allocate_and_copy): Use latter.
 632         (_M_initialize_dispatch): Small code simplification.
 633         (_M_range_initialize): Likewise and set _M_finish first from the result
 634         of __uninitialize_fill_n_a that can throw.
 635
 636 2024-05-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 637
 638         PR libstdc++/111641
 639         * src/libbacktrace/Makefile.am (AM_CFLAGS): Add -funwind-tables.
 640         * src/libbacktrace/Makefile.in: Regenerate.
 641         * testsuite/19_diagnostics/stacktrace/current.cc (dg-options): Add
 642         -funwind-tables.
 643         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
 644         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
 645         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
 646         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
 647
 648 2024-05-29  Matthias Kretz  <m.kretz@gsi.de>
 649
 650         PR libstdc++/115247
 651         * include/experimental/bits/simd.h (__as_vector): Don't use
 652         vector_size(8) on __i386__.
 653         (__vec_shuffle): Never return MMX vectors, widen to 16 bytes
 654         instead.
 655         (concat): Fix padding calculation to pick up widening logic from
 656         __as_vector.
 657
 658 2024-05-23  Patrick Palka  <ppalka@redhat.com>
 659
 660         * include/bits/version.def (ranges_concat): Define.
 661         * include/bits/version.h: Regenerate.
 662         * include/std/ranges (__detail::__concat_reference_t): Define
 663         for C++26.
 664         (__detail::__concat_value_t): Likewise.
 665         (__detail::__concat_rvalue_reference_t): Likewise.
 666         (__detail::__concat_indirectly_readable_impl): Likewise.
 667         (__detail::__concat_indirectly_readable): Likewise.
 668         (__detail::__concatable): Likewise.
 669         (__detail::__all_but_last_common): Likewise.
 670         (__detail::__concat_is_random_access): Likewise.
 671         (__detail::__concat_is_bidirectional): Likewise.
 672         (__detail::__last_is_common): Likewise.
 673         (concat_view): Likewise.
 674         (__detail::__concat_view_iter_cat): Likewise.
 675         (concat_view::iterator): Likewise.
 676         (views::__detail::__can_concat_view): Likewise.
 677         (views::_Concat, views::concat): Likewise.
 678         * testsuite/std/ranges/concat/1.cc: New test.
 679
 680 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
 681
 682         * include/bits/locale_classes.h (locale::combine)
 683         (locale::name, locale::operator==, locale::operator!=)
 684         (locale::operator(), locale::classic): Add nodiscard
 685         attribute.
 686         * include/bits/locale_classes.tcc (has_facet, use_facet):
 687         Likewise.
 688         * testsuite/22_locale/locale/cons/12438.cc: Add dg-warning for
 689         nodiscard diagnostic.
 690         * testsuite/22_locale/locale/cons/2.cc: Cast use_facet
 691         expression to void, to suppress diagnostic.
 692         * testsuite/22_locale/locale/cons/unicode.cc: Likewise.
 693         * testsuite/22_locale/locale/operations/2.cc: Add dg-warning.
 694
 695 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
 696
 697         PR libstdc++/108323
 698         * include/bits/locale_classes.tcc (locale(const locale&, Facet*)):
 699         Return a copy of the first argument when the facet pointer is
 700         null, as per LWG 2295.
 701         (locale::combine): Ensure the result is unnamed.
 702         * src/c++11/localename.cc (_M_replace_categories): Ignore
 703         whether the second locale has a name when cat == none, as per
 704         LWG 3676.
 705         * src/c++98/locale.cc (_M_install_facet): Use __builtin_expect
 706         to predict that the facet pointer is non-null.
 707         * testsuite/22_locale/locale/cons/names.cc: New test.
 708
 709 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
 710
 711         PR libstdc++/114940
 712         * include/bits/version.def (generator): Depend on
 713         __cpp_sized_deallocation.
 714         * include/bits/version.h: Regenerate.
 715         * include/std/stacktrace (_GLIBCXX_SIZED_DELETE): New macro.
 716         (basic_stacktrace::_Impl::_M_deallocate): Use it.
 717
 718 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
 719
 720         PR libstdc++/115099
 721         * include/bits/std_thread.h: Declare formatter as friend of
 722         thread::id.
 723         * include/std/thread (operator<<): Convert non-void pointers to
 724         void pointers for output.
 725         (formatter): Add constraint that thread::native_handle_type is a
 726         pointer or integer.
 727         (formatter::format): Reimplement without basic_ostringstream.
 728         * testsuite/30_threads/thread/id/output.cc: Check output
 729         compiles before <sstream> has been included.
 730
 731 2024-05-22  Jonathan Wakely  <jwakely@redhat.com>
 732
 733         PR libstdc++/115145
 734         * include/std/variant (operator==, operator!=, operator<)
 735         (operator<=, operator>, operator>=): Add trailing-return-type to
 736         lambda expressions to trigger conversion to bool.
 737         * testsuite/20_util/variant/relops/115145.cc: New test.
 738
 739 2024-05-17  Björn Schäpers  <bjoern@hazardy.de>
 740
 741         * acinclude.m4 (GLIBCXX_ENABLE_BACKTACE): Add check for
 742         tlhelp32.h, matching libbacktrace.
 743         * config.h.in: Regenerate.
 744         * configure: Regenerate.
 745
 746 2024-05-17  Jonathan Wakely  <jwakely@redhat.com>
 747
 748         PR libstdc++/115119
 749         * include/bits/unicode.h (_Iterator::operator++(int)): Fix typo
 750         in increment expression.
 751         * testsuite/ext/unicode/grapheme_view.cc: Check post-increment
 752         on view's iterator.
 753
 754 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
 755
 756         PR libstdc++/77704
 757         * include/bits/basic_ios.h (basic_ios::fill()): Do not modify
 758         _M_fill and _M_fill_init in a const member function.
 759         (basic_ios::fill(char_type)): Use _M_fill directly instead of
 760         calling fill(). Set _M_fill_init to true.
 761         * include/bits/basic_ios.tcc (basic_ios::init): Set _M_fill and
 762         _M_fill_init here instead.
 763         * testsuite/27_io/basic_ios/fill/char/1.cc: New test.
 764         * testsuite/27_io/basic_ios/fill/wchar_t/1.cc: New test.
 765
 766 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
 767
 768         * include/std/variant (__detail::__variant::__compare): New
 769         function template.
 770         (operator==, operator!=, operator<, operator>, operator<=)
 771         (operator>=): Replace macro definition with handwritten function
 772         calling __detail::__variant::__compare.
 773         (operator<=>): Call __detail::__variant::__compare.
 774
 775 2024-05-15  Jonathan Wakely  <jwakely@redhat.com>
 776
 777         PR libstdc++/89624
 778         * include/bits/atomic_base.h (memory_order): Use int as
 779         underlying type.
 780         * testsuite/29_atomics/atomic/89624.cc: New test.
 781
 782 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 783
 784         PR libstdc++/115015
 785         * src/c++23/print.cc (__open_terminal(streambuf*)) [!__cpp_rtti]:
 786         Do not use dynamic_cast.
 787
 788 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 789
 790         * doc/xml/manual/strings.xml: Clarify that GCC 4.5 added
 791         std::string::shrink_to_fit.
 792         * doc/html/manual/strings.html: Regenerate.
 793
 794 2024-05-14  Jonathan Wakely  <jwakely@redhat.com>
 795
 796         PR libstdc++/115063
 797         * include/std/stacktrace (basic_stacktrace::max_size): Fix typo
 798         in reference to _M_alloc member.
 799         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Check
 800         max_size() compiles.
 801
 802 2024-05-13  Matthias Kretz  <m.kretz@gsi.de>
 803
 804         PR libstdc++/114958
 805         * include/experimental/bits/simd.h (__as_vector): Return scalar
 806         simd as one-element vector. Return vector from single-vector
 807         fixed_size simd.
 808         (__vec_shuffle): New.
 809         (__extract_part): Adjust return type signature.
 810         (split): Use __extract_part for any split into non-fixed_size
 811         simds.
 812         (concat): If the return type stores a single vector, use
 813         __vec_shuffle (which calls __builtin_shufflevector) to produce
 814         the return value.
 815         * include/experimental/bits/simd_builtin.h
 816         (__shift_elements_right): Removed.
 817         (__extract_part): Return single elements directly. Use
 818         __vec_shuffle (which calls __builtin_shufflevector) to for all
 819         non-trivial cases.
 820         * include/experimental/bits/simd_fixed_size.h (__extract_part):
 821         Return single elements directly.
 822         * testsuite/experimental/simd/pr114958.cc: New test.
 823
 824 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 825
 826         * include/bits/unicode.h (_Unicode_view::_M_read_utf8): Ensure
 827         count of characters consumed is correct when the end of the
 828         input is reached unexpectedly.
 829         * testsuite/ext/unicode/view.cc: Test incomplete UTF-8
 830         sequences.
 831
 832 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 833
 834         PR libstdc++/114866
 835         * include/bits/out_ptr.h [!_GLIBCXX_HOSTED]: Don't refer to
 836         shared_ptr, __shared_ptr or __is_shred_ptr.
 837         * testsuite/20_util/headers/memory/114866.cc: New test.
 838
 839 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 840
 841         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE):
 842         Simplify.
 843
 844 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 845
 846         * include/bits/stl_pair.h (operator==): Add constraint.
 847         * include/bits/version.def (constrained_equality): Define.
 848         * include/bits/version.h: Regenerate.
 849         * include/std/optional: Define feature test macro.
 850         (__optional_rep_op_t): Use is_convertible_v instead of
 851         is_convertible.
 852         * include/std/tuple: Define feature test macro.
 853         (operator==, __tuple_cmp, operator<=>): Reimplement C++20
 854         comparisons using lambdas. Add constraints.
 855         * include/std/utility: Define feature test macro.
 856         * include/std/variant: Define feature test macro.
 857         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Add constraints.
 858         (variant): Remove unnecessary friend declarations for comparison
 859         operators.
 860         * testsuite/20_util/optional/relops/constrained.cc: New test.
 861         * testsuite/20_util/pair/comparison_operators/constrained.cc:
 862         New test.
 863         * testsuite/20_util/tuple/comparison_operators/constrained.cc:
 864         New test.
 865         * testsuite/20_util/variant/relops/constrained.cc: New test.
 866         * testsuite/20_util/tuple/comparison_operators/overloaded.cc:
 867         Disable for C++20 and later.
 868         * testsuite/20_util/tuple/comparison_operators/overloaded2.cc:
 869         Remove dg-error line for target c++20.
 870
 871 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 872
 873         * include/backward/auto_ptr.h: Use https for URL in comment.
 874         * include/bits/basic_ios.h: Likewise.
 875         * include/std/iostream: Likewise.
 876
 877 2024-05-07  Jonathan Wakely  <jwakely@redhat.com>
 878
 879         * testsuite/util/testsuite_abi.cc: Update latest versions to
 880         new versions that should be used in future.
 881
 882 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 883
 884         * src/Makefile.am [ENABLE_SYMVERS_SUN]
 885         (libstdc++-symbols.ver-sun): Pass $(libstdc___la_OBJECTS),
 886         $(libstdc___la_LIBADD) to make_sunver.pl unmodified.
 887         * src/Makefile.in: Regenerate.
 888
 889 2024-05-07  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 890
 891         * testsuite/lib/dg-options.exp (add_options_for_net_ts)
 892         <*-*-solaris2*>: Don't link with -lsocket -lnsl.
 893
 894 2024-05-03  Andreas Schwab  <schwab@linux-m68k.org>
 895
 896         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
 897         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
 898
 899 2024-05-01  Jonathan Wakely  <jwakely@redhat.com>
 900
 901         PR libstdc++/114891
 902         * include/std/generator: Check feature test macro before using
 903         is_pointer_interconvertible_v.
 904
 905 2024-04-30  Christophe Lyon  <christophe.lyon@linaro.org>
 906
 907         * testsuite/lib/gdb-test.exp (gdb-test): Fix regexp.  Quote
 908         newlines in logs.
 909
 910 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 911
 912         Backported from master:
 913         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 914
 915         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 916         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 917         Likewise.
 918         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 919         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 920         Likewise.
 921
 922 2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 923
 924         Backported from master:
 925         2024-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 926
 927         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 928         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 929         Likewise.
 930         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 931         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 932         Likewise.
 933
 934 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
 935
 936         PR libstdc++/114863
 937         * include/std/format (__formatter_fp::format): Only use
 938         _M_localized for finite values.
 939         * testsuite/std/format/functions/format.cc: Check localized
 940         formatting of NaN and initiny.
 941
 942 2024-04-26  Jonathan Wakely  <jwakely@redhat.com>
 943
 944         * doc/html/manual/status.html: Regenerate.
 945         * doc/xml/manual/status_cxx1998.xml: Adjust whitespace.
 946         * doc/xml/manual/status_cxx2011.xml: Likewise.
 947         * doc/xml/manual/status_cxx2014.xml: Likewise.
 948         * doc/xml/manual/status_cxx2017.xml: Likewise.
 949         * doc/xml/manual/status_cxx2020.xml: Likewise.
 950         * doc/xml/manual/status_cxx2023.xml: Likewise.
 951         * doc/xml/manual/status_cxxtr1.xml: Likewise.
 952         * doc/xml/manual/status_cxxtr24733.xml: Likewise.
 953
 954 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 955
 956         * scripts/run_doxygen: Rename man pages for nested types.
 957
 958 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 959
 960         * include/std/chrono (tzdb_list): Fix typo in Doxygen comment.
 961
 962 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 963
 964         * scripts/run_doxygen: Adjust sed pattern to match '\fR' for
 965         new man output that Doxygen 1.10 generates.
 966
 967 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 968
 969         * doc/doxygen/stdheader.cc (init_map): Add missing headers.
 970         * doc/doxygen/user.cfg.in (EXCLUDE): Exclude generated files for
 971         std::format and std::text_encoding.
 972
 973 2024-04-25  Jonathan Wakely  <jwakely@redhat.com>
 974
 975         * include/std/variant: Add comment to #include.
 976
 977 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
 978
 979         PR libstdc++/114803
 980         * include/experimental/bits/simd_builtin.h
 981         (_SimdBase2::operator __vector_type_t): There is no __builtin()
 982         function in _SimdWrapper, instead use its conversion operator.
 983         * testsuite/experimental/simd/pr114803_vecbuiltin_cvt.cc: New
 984         test.
 985
 986 2024-04-22  Matthias Kretz  <m.kretz@gsi.de>
 987
 988         * include/experimental/bits/simd.h: Ignore -Wnarrowing for
 989         arm_neon.h.
 990         (__int_for_sizeof): Replace tautological compare with checking
 991         for invalid template parameter value.
 992         * include/experimental/bits/simd_builtin.h (__extract_part):
 993         Remove tautological compare by combining two static_assert.
 994
 995 2024-04-22  Jakub Jelinek  <jakub@redhat.com>
 996
 997         * testsuite/17_intro/names.cc (d, f): Undefine on s390*-linux*.
 998         * testsuite/17_intro/headers/c++1998/all_attributes.cc (packed): Don't
 999         define on s390.
1000         * testsuite/17_intro/headers/c++2011/all_attributes.cc (packed):
1001         Likewise.
1002         * testsuite/17_intro/headers/c++2014/all_attributes.cc (packed):
1003         Likewise.
1004         * testsuite/17_intro/headers/c++2017/all_attributes.cc (packed):
1005         Likewise.
1006         * testsuite/17_intro/headers/c++2020/all_attributes.cc (packed):
1007         Likewise.
1008
1009 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
1010
1011         * include/bits/refwrap.h (operator<=>): Simplify constraints.
1012
1013 2024-04-19  Jonathan Wakely  <jwakely@redhat.com>
1014
1015         PR libstdc++/114770
1016         * src/c++20/tzdb.cc (do_locate_zone): Support links that have
1017         another link as their target.
1018         * testsuite/std/time/tzdb/1.cc: Check that all zones and links
1019         can be found by locate_zone.
1020         * testsuite/std/time/tzdb/links.cc: New test.
1021
1022 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
1023
1024         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
1025         Disable SRA.
1026
1027 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
1028
1029         * testsuite/20_util/from_chars/8.cc: Skip float128_t testing
1030         on aarch64-vxworks.
1031         * testsuite/20_util/to_chars/float128_c++23.cc: Xfail run on
1032         aarch64-vxworks.
1033
1034 2024-04-18  Alexandre Oliva  <oliva@adacore.com>
1035
1036         * src/c++20/tzdb.cc (__gnu_cxx::zoneinfo_dir_override): Define
1037         on VxWorks non-RTP.
1038
1039 2024-04-17  Jonathan Wakely  <jwakely@redhat.com>
1040
1041         * include/std/ostream (println(ostream&)): Define new overload.
1042         * include/std/print (println(FILE*), println()): Likewise.
1043         * testsuite/27_io/basic_ostream/print/2.cc: New test.
1044         * testsuite/27_io/print/1.cc: Remove unused header.
1045         * testsuite/27_io/print/3.cc: New test.
1046
1047 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
1048
1049         * include/experimental/bits/numeric_traits.h: Add include guard.
1050
1051 2024-04-17  Matthias Kretz  <m.kretz@gsi.de>
1052
1053         PR libstdc++/114750
1054         * include/experimental/bits/simd_builtin.h
1055         (_SimdImplBuiltin::_S_load, _S_store): Fall back to copying
1056         scalars if the memory type cannot be vectorized for the target.
1057
1058 2024-04-16  Jonathan Wakely  <jwakely@redhat.com>
1059
1060         * config/locale/dragonfly/numeric_members.cc: Fix typos in
1061         comments.
1062         * config/locale/gnu/numeric_members.cc: Likewise.
1063
1064 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
1065
1066         * doc/xml/manual/abi.xml: Replace "<next>" with "14.1.0".
1067         * doc/html/manual/abi.html: Regenerate.
1068
1069 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
1070
1071         * include/bits/refwrap.h (reference_wrapper): Add comparison
1072         operators as proposed by P2944R3.
1073         * include/bits/version.def (reference_wrapper): Define.
1074         * include/bits/version.h: Regenerate.
1075         * include/std/functional: Enable feature test macro.
1076         * testsuite/20_util/reference_wrapper/compare.cc: New test.
1077
1078 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
1079
1080         PR libstdc++/113386
1081         * include/bits/stl_pair.h (operator==, operator<=>): Support
1082         heterogeneous comparisons, as per LWG 3865.
1083         * testsuite/20_util/pair/comparison_operators/lwg3865.cc: New
1084         test.
1085
1086 2024-04-15  Jonathan Wakely  <jwakely@redhat.com>
1087
1088         PR libstdc++/93672
1089         * src/c++98/istream.cc (istream::ignore(streamsize, int_type)):
1090         Treat all negative delimiter values as eof().
1091         * testsuite/27_io/basic_istream/ignore/char/93672.cc: New test.
1092         * testsuite/27_io/basic_istream/ignore/wchar_t/93672.cc: New
1093         test.
1094
1095 2024-04-15  Andreas Schwab  <schwab@suse.de>
1096
1097         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1098
1099 2024-04-13  H.J. Lu  <hjl.tools@gmail.com>
1100
1101         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt:
1102         Updated.
1103
1104 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
1105
1106         * doc/xml/manual/abi.xml: Add latest library versions.
1107         * doc/html/manual/abi.html: Regenerate.
1108
1109 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
1110
1111         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1112         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1113         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1114         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1115         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1116         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1117         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1118         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
1119         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1120
1121 2024-04-11  Jonathan Wakely  <jwakely@redhat.com>
1122
1123         PR libstdc++/114692
1124         * config/abi/pre/gnu.ver (GLIBCXX_3.4.32): Move new exports for
1125         __basic_file::native_handle to ...
1126         (GLIBCXX_3.4.33): ... here. Adjust to not match wchar_t
1127         specialization, which isn't used.
1128         * testsuite/util/testsuite_abi.cc: Add GLIBCXX_3.4.33 and update
1129         latest version check.
1130
1131 2024-04-11  Jakub Jelinek  <jakub@redhat.com>
1132
1133         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
1134         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
1135         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
1136         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
1137         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1138         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
1139         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1140         * config/abi/post/powerpc64le-linux-gnu/baseline_symbols.txt: Update.
1141         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
1142
1143 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
1144
1145         * testsuite/27_io/manipulators/extended/get_time/char/2.cc:
1146         Adjust input string so that it matches %a with or without a
1147         trailing period.
1148         * testsuite/std/time/year_month_day/io.cc: Adjust expected
1149         format for %x in the fr_FR locale.
1150
1151 2024-04-10  Jonathan Wakely  <jwakely@redhat.com>
1152
1153         * src/c++17/fs_ops.cc (remove_all) [__FreeBSD__ || __DragonFly__]:
1154         Check for EMLINK as well as ELOOP.
1155         [__NetBSD__]: Check for EFTYPE as well as ELOOP.
1156
1157 2024-04-09  Jonathan Wakely  <jwakely@redhat.com>
1158
1159         PR libstdc++/114633
1160         * include/bits/chrono_io.h (_Parser::operator()) <'S'>: Use
1161         stream extraction if std::from_chars is not available.
1162
1163 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
1164
1165         PR libstdc++/114519
1166         * include/bits/unicode.h (_Utf8_view) [!__cpp_char8_t]: Define
1167         using char instead of char8_t.
1168         * testsuite/ext/unicode/view.cc: Use u8""sv literals to create
1169         string views, instead of std::u8string_view.
1170
1171 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
1172
1173         * testsuite/20_util/integer_comparisons/equal_neg.cc: Use
1174         no-opts selector for errors that depend on -fchar8_t.
1175         * testsuite/20_util/integer_comparisons/greater_equal_neg.cc:
1176         Likewise.
1177         * testsuite/20_util/integer_comparisons/greater_neg.cc:
1178         Likewise.
1179         * testsuite/20_util/integer_comparisons/in_range_neg.cc:
1180         Likewise.
1181         * testsuite/20_util/integer_comparisons/less_equal_neg.cc:
1182         Likewise.
1183         * testsuite/20_util/integer_comparisons/less_neg.cc: Likewise.
1184         * testsuite/20_util/integer_comparisons/not_equal_neg.cc:
1185         Likewise.
1186         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: Skip
1187         if -fno-char8_t is used.
1188         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
1189         Likewise.
1190         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
1191         Likewise.
1192         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
1193         Likewise.
1194         * testsuite/27_io/filesystem/path/factory/u8path-depr.cc: Use
1195         char for u8 literal if char8_t is not available.
1196         * testsuite/27_io/headers/iosfwd/synopsis.cc: Check
1197         __cpp_char8_t.
1198         * testsuite/29_atomics/atomic_integral/wait_notify.cc: Likewise.
1199         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc:
1200         Remove check for _GLIBCXX_USE_CHAR8_T.
1201
1202 2024-04-08  Jonathan Wakely  <jwakely@redhat.com>
1203
1204         * testsuite/20_util/from_chars/1_neg.cc: Add char8_t cases,
1205         using a struct of that name if -fno-char8_t is active.
1206         * testsuite/20_util/from_chars/1_c++20_neg.cc: Removed.
1207
1208 2024-04-03  Jonathan Wakely  <jwakely@redhat.com>
1209
1210         PR libstdc++/104606
1211         * include/std/optional (operator<=>(const optional<T>&, const U&)):
1212         Reverse order of three_way_comparable_with template arguments.
1213         * testsuite/20_util/optional/relops/104606.cc: New test.
1214
1215 2024-04-02  Jonathan Wakely  <jwakely@redhat.com>
1216
1217         PR libstdc++/114519
1218         * include/bits/unicode.h (_Utf8_view): Guard with check for
1219         char8_t being enabled.
1220         (__literal_encoding_is_unicode): Guard use of char8_t with check
1221         for it being enabled.
1222         * testsuite/std/format/functions/114519.cc: New test.
1223
1224 2024-04-02  Patrick Palka  <ppalka@redhat.com>
1225
1226         * include/std/ranges (ranges::__detail::_Empty): Rename to ...
1227         (ranges::__detail::_Absent): ... this.  Turn into a template
1228         parameterized by the absent type _Tp and discriminator _Disc.
1229         (ranges::__detail::__maybe_present_t): Add an optional
1230         discriminator parameter.
1231         (slide_view::_M_cached_begin): Pass a discriminator argument to
1232         __maybe_present_t.
1233         (slide_view::_M_cached_end): Likewise.
1234         * testsuite/std/ranges/adaptors/sizeof.cc: Verify the size of
1235         slide_view<V> is 3 instead 4 pointers.
1236
1237 2024-04-02  Jakub Jelinek  <jakub@redhat.com>
1238
1239         * acinclude.m4: Fix duplicated words; file file -> file can.
1240         * configure.host: Fix duplicated words; the the -> the.
1241
1242 2024-03-29  Arsen Arsenović  <arsen@aarsen.me>
1243
1244         * testsuite/24_iterators/range_generators/01.cc: Drop GCC
1245         Runtime Library Exception.
1246         * testsuite/24_iterators/range_generators/02.cc: Drop GCC
1247         Runtime Library Exception.
1248         * testsuite/24_iterators/range_generators/copy.cc: Drop GCC
1249         Runtime Library Exception.
1250         * testsuite/24_iterators/range_generators/except.cc: Drop GCC
1251         Runtime Library Exception.
1252         * testsuite/24_iterators/range_generators/subrange.cc: Drop GCC
1253         Runtime Library Exception.
1254         * testsuite/24_iterators/range_generators/synopsis.cc: Drop GCC
1255         Runtime Library Exception.
1256         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
1257         Drop GCC Runtime Library Exception from the "You should have
1258         received a copy" paragraph.
1259
1260 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
1261
1262         * include/experimental/bits/simd_x86.h (_S_masked_unary):
1263         Cast inputs < 16 bytes to 16 byte vectors before calling the
1264         right subtraction builtin. Before returning, truncate to the
1265         return vector type.
1266
1267 2024-03-27  Matthias Kretz  <m.kretz@gsi.de>
1268
1269         * include/experimental/bits/simd_x86.h (_S_masked_unary): Call
1270         the 4- and 8-byte variants of __builtin_ia32_subp[ds] without
1271         rounding direction argument.
1272
1273 2024-03-27  Srinivas Yadav Singanaboina  <vasu.srinivasvasu.14@gmail.com>
1274
1275         * include/Makefile.am: Add simd_sve.h.
1276         * include/Makefile.in: Add simd_sve.h.
1277         * include/experimental/bits/simd.h: Add new SveAbi.
1278         * include/experimental/bits/simd_builtin.h: Use
1279         __no_sve_deduce_t to support existing Neon Abi.
1280         * include/experimental/bits/simd_converter.h: Convert
1281         sequentially when sve is available.
1282         * include/experimental/bits/simd_detail.h: Define sve
1283         specific macro.
1284         * include/experimental/bits/simd_math.h: Fallback frexp
1285         to execute sequntially when sve is available, to handle
1286         fixed_size_simd return type that always uses sve.
1287         * include/experimental/simd: Include bits/simd_sve.h.
1288         * testsuite/experimental/simd/tests/bits/main.h: Enable
1289         testing for sve128, sve256, sve512.
1290         * include/experimental/bits/simd_sve.h: New file.
1291
1292 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
1293
1294         * include/std/generator (generator::_Iterator::operator*): Fix
1295         return type.
1296         * testsuite/24_iterators/range_generators/iter_deref_return.cc:
1297         New test.
1298
1299 2024-03-26  Arsen Arsenović  <arsen@aarsen.me>
1300
1301         * include/std/generator: Fix _V badname.
1302
1303 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
1304
1305         * testsuite/19_diagnostics/stacktrace/current.cc: Check for
1306         __cpp_lib_stacktrace instead of check for stacktrace ET.
1307         * testsuite/19_diagnostics/stacktrace/entry.cc: Likewise.
1308         * testsuite/19_diagnostics/stacktrace/hash.cc: Likewise.
1309         * testsuite/19_diagnostics/stacktrace/output.cc: Likewise.
1310         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: Likewise.
1311         * testsuite/19_diagnostics/stacktrace/synopsis.cc: Likewise.
1312         * testsuite/19_diagnostics/stacktrace/version.cc: Likewise.
1313         * testsuite/23_containers/vector/debug/assign4_backtrace_neg.cc:
1314         Likewise.
1315         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
1316         Remove.
1317
1318 2024-03-26  Jonathan Wakely  <jwakely@redhat.com>
1319
1320         * testsuite/lib/dg-options.exp (dg-require-cpp-feature-test):
1321         New proc.
1322         * testsuite/lib/libstdc++.exp (check_v3_target_cpp_feature_test):
1323         New proc.
1324         * testsuite/std/text_encoding/cons.cc: Use new directive to skip
1325         the test if the __cpp_lib_text_encoding feature test macro is
1326         not defined.
1327         * testsuite/std/text_encoding/requirements.cc: Likewise.
1328
1329 2024-03-25  Jonathan Wakely  <jwakely@redhat.com>
1330
1331         * testsuite/std/text_encoding/requirements.cc: #undef the
1332         correct macro.
1333
1334 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
1335
1336         * include/std/format (formatter): Disable specializations that
1337         would allow sequences of narrow characters to be formatted as
1338         wchar_t without conversion, as per LWG 3944.
1339         * testsuite/std/format/formatter/lwg3944.cc: New test.
1340
1341 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
1342
1343         * include/bits/utility.h (__is_in_place_index_v): New variable
1344         template.
1345         * include/std/variant (__not_in_place_tag): Define in terms of
1346         variable templates not a class template.
1347
1348 2024-03-23  Jonathan Wakely  <jwakely@redhat.com>
1349
1350         PR libstdc++/114400
1351         * include/std/string_view (operator==): Use std::type_identity_t
1352         in C++20 instead of our own __type_identity_t.
1353
1354 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
1355
1356         PR libstdc++/114401
1357         * include/bits/hashtable.h (_Hashtable::_M_reinsert_node): Call
1358         release() on node handle instead of just zeroing its pointer.
1359         (_Hashtable::_M_reinsert_node_multi): Likewise.
1360         (_Hashtable::_M_merge_unique): Likewise.
1361         (_Hashtable::_M_merge_multi): Likewise.
1362         * include/bits/node_handle.h (_Node_handle_common::release()):
1363         New member function.
1364         (_Node_handle_common::_Optional_alloc::_M_empty): Remove
1365         unnecessary union member.
1366         (_Node_handle_common): Declare _Hashtable as a friend.
1367         * include/bits/stl_tree.h (_Rb_tree::_M_reinsert_node_unique):
1368         Call release() on node handle instead of just zeroing its
1369         pointer.
1370         (_Rb_tree::_M_reinsert_node_equal): Likewise.
1371         (_Rb_tree::_M_reinsert_node_hint_unique): Likewise.
1372         (_Rb_tree::_M_reinsert_node_hint_equal): Likewise.
1373         * testsuite/23_containers/multiset/modifiers/114401.cc: New test.
1374         * testsuite/23_containers/set/modifiers/114401.cc: New test.
1375         * testsuite/23_containers/unordered_multiset/modifiers/114401.cc: New test.
1376         * testsuite/23_containers/unordered_set/modifiers/114401.cc: New test.
1377
1378 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
1379
1380         PR libstdc++/113841
1381         * include/bits/allocator.h (allocator<cv T>): Add default
1382         constructor to partial specializations for cv-qualified types.
1383         * include/bits/stl_vector.h (_Vector_impl::_Vector_impl()):
1384         Constrain so that it's only present if the allocator is default
1385         constructible.
1386         * include/bits/stl_bvector.h (_Bvector_impl::_Bvector_impl()):
1387         Likewise.
1388         * testsuite/23_containers/vector/cons/113841.cc: New test.
1389
1390 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
1391
1392         * include/bits/stl_construct.h (destroy_at, construct_at): Guard
1393         with feature test macros instead of just __cplusplus.
1394
1395 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
1396
1397         * include/bits/version.def (generator, tuple_like): Move earlier
1398         in the file.
1399         * include/bits/version.h: Regenerate.
1400
1401 2024-03-22  Jonathan Wakely  <jwakely@redhat.com>
1402
1403         PR libstdc++/114394
1404         * include/std/functional (bind): Use __invoke_result_t instead
1405         of result_of::type.
1406         * include/std/type_traits (__invoke_result_t): New alias
1407         template.
1408         * testsuite/20_util/bind/ref_neg.cc: Adjust prune pattern.
1409
1410 2024-03-20  François Dumont  <fdumont@gcc.gnu.org>
1411
1412         * include/bits/version.def (null_iterators): Remove extra_cond.
1413         * include/bits/version.h: Regenerate.
1414
1415 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1416
1417         PR libstdc++/114359
1418         * include/bits/random.tcc (binomial_distribution::param_type):
1419         Ensure arithmetic is done as type double.
1420         * testsuite/26_numerics/random/binomial_distribution/114359.cc: New test.
1421
1422 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1423
1424         PR libstdc++/101228
1425         * include/pstl/parallel_backend_tbb.h (TBB_SUPPRESS_DEPRECATED_MESSAGES):
1426         Define before including <tbb/task.h> then undef afterwards.
1427
1428 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1429
1430         * include/Makefile.am [MAINTAINER_MODE]: Add target to
1431         automatically update <bits/version.h>.
1432         * include/Makefile.in: Regenerate.
1433
1434 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1435
1436         * doc/xml/manual/build_hacking.xml: Document generated files.
1437         Update list of convenience libraries and sub-directories under
1438         the src directory.
1439         * doc/html/*: Regenerate.
1440
1441 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1442
1443         * include/bits/text_encoding-data.h: Regenerate.
1444         * include/bits/unicode-data.h: Regenerate.
1445         * scripts/gen_text_encoding_data.py: Fix header of generated
1446         file to name the correct script.
1447
1448 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1449
1450         * testsuite/util/pstl/test_utils.h: Fix typos in comments.
1451
1452 2024-03-19  Jonathan Wakely  <jwakely@redhat.com>
1453
1454         PR libstdc++/114367
1455         * include/bits/stl_bvector.h (_M_allocate): Use allocator's
1456         construct function to begin lifetime of words.
1457
1458 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
1459
1460         * testsuite/lib/dg-options.exp (atomic_link_flags): Emit a -B
1461         option for the path to the uninstalled libatomic.
1462
1463 2024-03-19  Iain Sandoe  <iain@sandoe.co.uk>
1464
1465         * testsuite/lib/libstdc++.exp (v3_target_compile): Instead of
1466         /dev/null, use a temporary file for test executables on Darwin.
1467
1468 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
1469
1470         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_can_advance):
1471         Accept 0 offset advance on value-initialized iterator.
1472         * testsuite/23_containers/vector/debug/n3644.cc: New test case.
1473
1474 2024-03-18  François Dumont  <fdumont@gcc.gnu.org>
1475
1476         * include/debug/safe_local_iterator.tcc
1477         (_Safe_local_iterator::_M_valid_range): Add _M_value_initialized and
1478         _M_singular checks.
1479         * testsuite/23_containers/unordered_set/debug/114316.cc: New test case.
1480
1481 2024-03-17  François Dumont  <fdumont@gcc.gnu.org>
1482
1483         PR libstdc++/114316
1484         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range):
1485         First check if both iterators are value-initialized before checking if
1486         singular.
1487         * testsuite/23_containers/set/debug/114316.cc: New test case.
1488         * testsuite/23_containers/vector/debug/114316.cc: New test case.
1489
1490 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
1491
1492         PR libstdc++/114325
1493         * include/std/format (_Scanner::_M_scan): Pass correct length to
1494         __to_chars_10_impl.
1495         * testsuite/std/format/functions/format.cc: Check negative
1496         integers with empty format-spec.
1497
1498 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
1499
1500         * include/bits/stl_algo.h (find_end, all_of, none_of, any_of)
1501         (find_if_not, is_partitioned, partition_point, remove)
1502         (remove_if, unique, lower_bound, upper_bound, equal_range)
1503         (binary_search, includes, is_sorted, is_sorted_until, minmax)
1504         (minmax_element, is_permutation, clamp, find_if, find_first_of)
1505         (adjacent_find, count, count_if, search, search_n, min_element)
1506         (max_element): Add nodiscard attribute.
1507         * include/bits/stl_algobase.h (min, max, lower_bound, equal)
1508         (lexicographical_compare, lexicographical_compare_three_way)
1509         (mismatch): Likewise.
1510         * include/bits/stl_heap.h (is_heap, is_heap_until): Likewise.
1511         * testsuite/25_algorithms/equal/debug/1_neg.cc: Add dg-warning.
1512         * testsuite/25_algorithms/equal/debug/2_neg.cc: Likewise.
1513         * testsuite/25_algorithms/equal/debug/3_neg.cc: Likewise.
1514         * testsuite/25_algorithms/find_first_of/concept_check_1.cc:
1515         Likewise.
1516         * testsuite/25_algorithms/is_permutation/2.cc: Likewise.
1517         * testsuite/25_algorithms/lexicographical_compare/71545.cc:
1518         Likewise.
1519         * testsuite/25_algorithms/lower_bound/33613.cc: Likewise.
1520         * testsuite/25_algorithms/lower_bound/debug/irreflexive.cc:
1521         Likewise.
1522         * testsuite/25_algorithms/lower_bound/debug/partitioned_neg.cc:
1523         Likewise.
1524         * testsuite/25_algorithms/lower_bound/debug/partitioned_pred_neg.cc:
1525         Likewise.
1526         * testsuite/25_algorithms/minmax/3.cc: Likewise.
1527         * testsuite/25_algorithms/search/78346.cc: Likewise.
1528         * testsuite/25_algorithms/search_n/58358.cc: Likewise.
1529         * testsuite/25_algorithms/unique/1.cc: Likewise.
1530         * testsuite/25_algorithms/unique/11480.cc: Likewise.
1531         * testsuite/25_algorithms/upper_bound/33613.cc: Likewise.
1532         * testsuite/25_algorithms/upper_bound/debug/partitioned_neg.cc:
1533         Likewise.
1534         * testsuite/25_algorithms/upper_bound/debug/partitioned_pred_neg.cc:
1535         Likewise.
1536         * testsuite/ext/concept_checks.cc: Likewise.
1537         * testsuite/ext/is_heap/47709.cc: Likewise.
1538         * testsuite/ext/is_sorted/cxx0x.cc: Likewise.
1539
1540 2024-03-14  xndcn  <xndchn@gmail.com>
1541
1542         * include/bits/atomic_base.h (__atomic_float::__atomic_float(Fp)):
1543         Clear padding.
1544         * testsuite/29_atomics/atomic_float/compare_exchange_padding.cc:
1545         New test.
1546
1547 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
1548
1549         PR libstdc++/66146
1550         * doc/xml/manual/status_cxx2011.xml: Remove mention of Linux in
1551         note about std::call_once.
1552         * doc/xml/manual/status_cxx2014.xml: Likewise.
1553         * doc/xml/manual/status_cxx2017.xml: Likewise.
1554         * doc/html/manual/status.html: Regenerate.
1555
1556 2024-03-14  Jonathan Wakely  <jwakely@redhat.com>
1557
1558         * doc/xml/manual/status_cxx2023.xml: Update C++23 status table.
1559         * doc/html/manual/status.html: Regenerate.
1560         * include/bits/version.def: Fix typo in comment.
1561
1562 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
1563
1564         * testsuite/libstdc++-prettyprinters/cxx11.cc: Move custom_cat
1565         to namespace scope.
1566
1567 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
1568
1569         * doc/xml/manual/debug.xml: Improve docs on debug builds and
1570         using ASan. Mention _GLIBCXX_ASSERTIONS. Reorder sections to put
1571         the most relevant ones first.
1572         * doc/xml/manual/using.xml: Add comma.
1573         * doc/html/*: Regenerate.
1574
1575 2024-03-13  Jonathan Wakely  <jwakely@redhat.com>
1576
1577         * doc/xml/manual/debug.xml: Document that concept checking might
1578         be removed in future.
1579         * doc/xml/manual/extensions.xml: Likewise.
1580
1581 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
1582
1583         PR libstdc++/114240
1584         * include/bits/chrono_io.h (_Parser::operator()): Assume
1585         hours(0) for a time_point, so that a time is not required
1586         to be present.
1587         * testsuite/std/time/parse/114240.cc: New test.
1588
1589 2024-03-09  Jonathan Wakely  <jwakely@redhat.com>
1590
1591         PR libstdc++/114279
1592         * include/bits/chrono_io.h (_Parser::_M_is_leap_second): New
1593         data member.
1594         (_Parser::_M_reserved): Reserve padding bits for future use.
1595         (_Parser::operator()): Set _M_is_leap_second if %S reads 60s.
1596         (from_stream): Only allow _M_is_leap_second for utc_time and
1597         local_time. Adjust arithmetic for utc_time so that leap seconds
1598         are preserved. Use time_point_cast to convert to a possibly
1599         lower-precision result type.
1600         * testsuite/std/time/parse.cc: Move to ...
1601         * testsuite/std/time/parse/parse.cc: ... here.
1602         * testsuite/std/time/parse/114279.cc: New test.
1603
1604 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1605
1606         * include/bits/chrono_io.h (_Parser::operator()): Use
1607         std::from_chars to parse fractional seconds.
1608
1609 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1610
1611         PR libstdc++/114244
1612         * include/bits/chrono_io.h (_Parser::operator()): Remove
1613         redundant uses of duration_cast. Use chrono::round to convert
1614         long double value to durations with integer representations.
1615         Check represenation type when deciding whether to skip parsing
1616         fractional seconds.
1617         * testsuite/20_util/duration/114244.cc: New test.
1618         * testsuite/20_util/duration/io.cc: Check that a floating-point
1619         duration with ratio<1> precision can be parsed.
1620
1621 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1622
1623         PR libstdc++/114103
1624         * include/bits/version.def (atomic_lock_free_type_aliases): Add
1625         extra_cond to check for at least one always-lock-free type.
1626         * include/bits/version.h: Regenerate.
1627         * include/std/atomic (atomic_signed_lock_free)
1628         (atomic_unsigned_lock_free): Only use always-lock-free types.
1629         * src/c++20/tzdb.cc (time_zone::_Impl::RulesCounter): Don't use
1630         atomic counter if lock-free aliases aren't available.
1631         * testsuite/29_atomics/atomic/lock_free_aliases.cc: XFAIL for
1632         targets without lock-free word-size compare_exchange.
1633
1634 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1635
1636         * include/std/chrono (__get_leap_second_info): Update expiry
1637         time for hardcoded list of leap seconds.
1638         * testsuite/std/time/tzdb/leap_seconds.cc: Update comment.
1639
1640 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1641
1642         * testsuite/23_containers/deque/allocator/default_init.cc: Use
1643         std::memset instead of __builtin_memset.
1644         * testsuite/23_containers/forward_list/allocator/default_init.cc:
1645         Likewise.
1646         * testsuite/23_containers/list/allocator/default_init.cc:
1647         Likewise.
1648         * testsuite/23_containers/map/allocator/default_init.cc:
1649         Likewise.
1650         * testsuite/23_containers/set/allocator/default_init.cc:
1651         Likewise.
1652         * testsuite/23_containers/unordered_map/allocator/default_init.cc:
1653         Likewise.
1654         * testsuite/23_containers/unordered_set/allocator/default_init.cc:
1655         Likewise.
1656         * testsuite/23_containers/vector/allocator/default_init.cc:
1657         Likewise.
1658         * testsuite/23_containers/vector/bool/allocator/default_init.cc:
1659         Likewise.
1660         * testsuite/29_atomics/atomic/compare_exchange_padding.cc:
1661         Likewise.
1662         * testsuite/util/atomic/wait_notify_util.h: Likewise.
1663
1664 2024-03-07  Jonathan Wakely  <jwakely@redhat.com>
1665
1666         * include/std/format (_Arg_store::_S_make_elt): Add two
1667         static_assert checks to give more user-friendly error messages.
1668         * testsuite/lib/prune.exp (libstdc++-dg-prune): Prune another
1669         form of "in requirements with" note.
1670         * testsuite/std/format/arguments/args_neg.cc: Check for
1671         user-friendly diagnostics for non-formattable types.
1672         * testsuite/std/format/string_neg.cc: Likewise.
1673
1674 2024-03-04  Jonathan Wakely  <jwakely@redhat.com>
1675
1676         PR libstdc++/114147
1677         * include/std/tuple (tuple::tuple(allocator_arg_t, const Alloc&)):
1678         Add missing overload of allocator-extended default constructor.
1679         (tuple<T1,T2>::tuple(allocator_arg_t, const Alloc&)): Likewise.
1680         * testsuite/20_util/tuple/cons/114147.cc: New test.
1681
1682 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
1683
1684         * include/std/format (basic_format_arg::handle::__maybe_const_t):
1685         Fix condition to check if const type is formattable.
1686         (basic_format_arg::handle::handle(T&)): Remove redundant
1687         static_assert.
1688         * testsuite/std/format/formatter/basic.cc: New test.
1689
1690 2024-02-29  Jonathan Wakely  <jwakely@redhat.com>
1691
1692         PR libstdc++/113960
1693         * include/bits/stl_algobase.h (__is_byte_iter): Replace with ...
1694         (__memcmp_ordered_with): New concept.
1695         (lexicographical_compare_three_way): Use __memcmp_ordered_with
1696         instead of __is_byte_iter. Use correct length for memcmp.
1697         * testsuite/25_algorithms/lexicographical_compare_three_way/113960.cc:
1698         New test.
1699
1700 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1701
1702         PR libstdc++/114152
1703         * include/experimental/scope (scope_exit scope_fail): Make
1704         destructor unconditionally noexcept.
1705         (scope_sucess): Fix noexcept-specifier.
1706         * testsuite/experimental/scopeguard/114152.cc: New test.
1707
1708 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1709
1710         * doc/xml/manual/appendix_contributing.xml: Change URLs to use
1711         https.
1712         * doc/html/manual/*: Regenerate.
1713
1714 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1715
1716         * doc/xml/manual/appendix_contributing.xml: Replace outdated
1717         info on ChangeLog entries.
1718         * doc/html/manual/appendix_contributing.html: Regenerate.
1719
1720 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1721
1722         * include/bits/stl_bvector.h (vector<bool, A>::at): Add
1723         nodiscard.
1724         * include/bits/stl_vector.h (vector<T, A>::at): Likewise.
1725         (operator==, operator<=>, operator<, operator!=, operator>)
1726         (operator<=, operator>=): Likewise.
1727         * include/debug/vector (operator==, operator<=>, operator<)
1728         (operator!=, operator>, operator<=, operator>=): Likewise.
1729         * testsuite/23_containers/vector/nodiscard.cc: New test.
1730
1731 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1732
1733         * include/bits/atomic_base.h (operator|, operator&): Add
1734         noexcept.
1735         * include/bits/fs_fwd.h (operator&, operator|, operator^)
1736         (operator~): Add nodiscard to overloads for copy_options, perms,
1737         perm_options, and directory_options.
1738         * include/bits/ios_base.h (operator&, operator|, operator^)
1739         (operator~): Add nodiscard and noexcept to overloads for
1740         _Ios_Fmtflags, _Ios_Openmode, and _Ios_Iostate.
1741         (operator|=, operator&=, operator^=): Add constexpr for C++14.
1742         * include/bits/regex_constants.h (operator&, operator|, operator^)
1743         (operator~): Add nodiscard and noexcept to overloads for
1744         syntax_option_type and match_flag_type.
1745         (operator|=, operator&=, operator^=): Add noexcept.
1746         * include/std/charconv (operator&, operator|, operator^)
1747         (operator~): Add nodiscard to overloads for chars_format.
1748         * include/std/future (operator&, operator|, operator^)
1749         (operator~): Add nodiscard for overloads for launch.
1750         (operator&=, operator|=, operator^=): Add constexpr for C++14.
1751         * include/experimental/bits/fs_fwd.h  (operator&, operator|)
1752         (operator^, operator~): Add nodiscard to overloads for
1753         copy_options, perms, and directory_options.
1754         * testsuite/27_io/ios_base/types/fmtflags/bitmask_operators.cc:
1755         Add dg-warning for nodiscard warnings.
1756         * testsuite/27_io/ios_base/types/iostate/bitmask_operators.cc:
1757         Likewise.
1758         * testsuite/27_io/ios_base/types/openmode/bitmask_operators.cc:
1759         Likewise.
1760         * testsuite/27_io/filesystem/operations/bitmask_types.cc:
1761         New test.
1762
1763 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1764
1765         * testsuite/27_io/basic_ostream/print/1.cc: Check error
1766         handling.
1767         * testsuite/27_io/print/1.cc: Likewise.
1768
1769 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1770
1771         * include/std/ostream (vprint_unicode) [__CYGWIN__]: Use POSIX
1772         code path for Cygwin instead of Windows.
1773         * include/std/print (vprint_unicode) [__CYGWIN__]: Likewise.
1774         * testsuite/27_io/basic_ostream/print/1.cc: Only add -lstdc++exp
1775         for *-*-mingw* targets.
1776         * testsuite/27_io/print/1.cc: Likewise.
1777
1778 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1779
1780         * include/bits/alloc_traits.h: Include <bits/stl_iterator.h> for
1781         __make_move_if_noexcept_iterator.
1782
1783 2024-02-28  Jonathan Wakely  <jwakely@redhat.com>
1784
1785         * include/std/stacktrace: Add nodiscard attribute to all
1786         functions without side effects.
1787
1788 2024-02-20  François Dumont  <fdumont@gcc.gnu.org>
1789
1790         * include/bits/stl_algobase.h (std::__niter_wrap): Add a call to
1791         std::__niter_base on res iterator.
1792
1793 2024-02-19  Iain Sandoe  <iain@sandoe.co.uk>
1794             Jonathan Wakely  <jwakely@redhat.com>
1795
1796         PR target/112397
1797         * configure: Regenerate.
1798         * configure.ac: Detect if we are building for Darwin.
1799         * libsupc++/Makefile.am: If we are building for Darwin, then
1800         suppress hot/cold partitioning for the array allocators.
1801         * libsupc++/Makefile.in: Regenerated.
1802
1803 2024-02-17  François Dumont  <fdumont@gcc.gnu.org>
1804
1805         * include/bits/stl_algobase.h (std::__niter_base): Redefine the overload
1806         definitions for __gnu_debug::_Safe_iterator.
1807         * include/debug/safe_iterator.tcc (std::__niter_base): Adapt declarations.
1808
1809 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1810
1811         PR libstdc++/87744
1812         PR libstdc++/113961
1813         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1814         line number.
1815
1816 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1817
1818         PR libstdc++/87744
1819         PR libstdc++/113931
1820         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1821         line number.
1822
1823 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1824
1825         * doc/xml/manual/debug_mode.xml: Update docs for backtraces.
1826         * doc/html/manual/debug_mode_using.html: Regenerate.
1827
1828 2024-02-16  Jonathan Wakely  <jwakely@redhat.com>
1829
1830         * doc/xml/manual/test.xml: Fix spelling of <envar> elements.
1831         * doc/html/manual/test.html: Regenerate.
1832
1833 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1834
1835         PR libstdc++/113806
1836         * include/std/bitset (bitset::operator>>=): Remove redundant
1837         call to _M_do_sanitize.
1838
1839 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1840
1841         PR libstdc++/113807
1842         * include/std/bitset (bitset::set()): Use memset instead of a
1843         loop over the individual words.
1844
1845 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1846
1847         PR libstdc++/113811
1848         * include/bits/stl_algo.h (__rotate): Use unsigned values for
1849         division.
1850
1851 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1852
1853         PR libstdc++/99117
1854         * include/std/valarray (valarray::operator=(const _Expr&)):
1855         Use loop to copy instead of __valarray_copy with _Array.
1856         * testsuite/26_numerics/valarray/99117.cc: New test.
1857
1858 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1859
1860         * src/c++20/tzdata.zi: Import new file from 2024a release.
1861         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
1862         Update expiry date for leap seconds list.
1863
1864 2024-02-15  Jonathan Wakely  <jwakely@redhat.com>
1865
1866         PR libstdc++/87744
1867         * include/bits/random.h [!__SIZEOF_INT128__] (_Select_uint_least_t):
1868         Define specialization for 64-bit generators with
1869         non-power-of-two modulus and large constants.
1870         (__mod): Use if constexpr unconditionally.
1871         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
1872         line number.
1873         * testsuite/26_numerics/random/linear_congruential_engine/87744.cc:
1874         New test.
1875
1876 2024-02-14  Gerald Pfeifer  <gerald@pfeifer.com>
1877
1878         * doc/xml/manual/status_cxx2023.xml: Fix C++ item p2442 to be
1879         version 1.
1880         * doc/html/manual/status.html: Regenerate.
1881
1882 2024-02-12  Paul Keir  <paul.keir@uws.ac.uk>
1883
1884         PR libstdc++/113294
1885         * include/bits/basic_string.h (basic_string::operator=): Use
1886         _M_use_local_data() instead of _M_local_buf on the moved-from
1887         string.
1888         * testsuite/21_strings/basic_string/modifiers/constexpr.cc
1889         (test_move): New test.
1890
1891 2024-02-09  Ken Matsui  <kmatsui@gcc.gnu.org>
1892
1893         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_IS_SAME):
1894         Removed.
1895         * include/std/type_traits (is_same): Use
1896         _GLIBCXX_USE_BUILTIN_TRAIT instead of
1897         _GLIBCXX_HAVE_BUILTIN_IS_SAME.
1898         (is_same_v): Likewise.
1899
1900 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1901
1902         * include/bits/shared_ptr_atomic.h: Fix typo in comment.
1903
1904 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1905
1906         PR libstdc++/100147
1907         * include/bits/gslice.h (operator=): Add comment about lack of
1908         self-assignment check.
1909
1910 2024-02-08  Jonathan Wakely  <jwakely@redhat.com>
1911
1912         * include/tr2/type_traits (bases, direct_bases): Use
1913         __has_builtin to check if required built-ins are supported.
1914
1915 2024-02-07  Patrick Palka  <ppalka@redhat.com>
1916
1917         PR testsuite/113710
1918         PR c++/113814
1919         * include/bits/stl_pair.h (tuple_element): Add forward
1920         declaration of the partial specialization for tuple.
1921
1922 2024-02-06  Torbjörn SVENSSON  <torbjorn.svensson@foss.st.com>
1923
1924         * testsuite/lib/libstdc++.exp: Use "nul" for Windows, "/dev/null"
1925         for other environments.
1926
1927 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1928
1929         * include/std/format (__format::_Spec::_M_reserved): Define new
1930         bit-field members to reserve padding bits for future extensions.
1931
1932 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1933
1934         * src/experimental/Makefile.am: Use libstdc++fsconvenience.a
1935         instead of libstdc++fs.a.
1936         * src/experimental/Makefile.in: Regenerate.
1937         * src/filesystem/Makefile.am: Build libstdc++fsconvenience.a as
1938         well.
1939         * src/filesystem/Makefile.in: Regenerate.
1940
1941 2024-02-04  Jonathan Wakely  <jwakely@redhat.com>
1942
1943         * include/bits/text_encoding-data.h: Regenerate.
1944         * include/bits/unicode-data.h: Regenerate.
1945         * scripts/gen_text_encoding_data.py: Add copyright and license
1946         text to the output.
1947
1948 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1949
1950         PR libstdc++/113335
1951         * include/bits/std_function.h (__function_guide_helper): Add
1952         partial specialization for explicit object member functions, as
1953         per LWG 3617.
1954         * testsuite/20_util/function/cons/deduction_c++23.cc: Check
1955         explicit object member functions.
1956         * testsuite/30_threads/packaged_task/cons/deduction_c++23.cc:
1957         Likewise.
1958
1959 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1960
1961         * testsuite/17_intro/names.cc [_AIX]: Undefine "u".
1962
1963 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1964
1965         * include/experimental/internet (network_v6::network): Define.
1966         (network_v6::hosts): Finish implementing.
1967         (network_v6::to_string): Do not concatenate std::string to
1968         arbitrary std::basic_string specialization.
1969         * testsuite/experimental/net/internet/network/v6/cons.cc: New
1970         test.
1971
1972 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1973
1974         PR libstdc++/90276
1975         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Fix
1976         comparison function to use less-than instead of equality.
1977
1978 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1979
1980         PR libstdc++/90276
1981         * testsuite/util/pstl/test_utils.h (reverse_invoker): Do not use
1982         perfect forwarding for iterator arguments.
1983
1984 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1985
1986         * include/std/string_view (basic_string_view(R&&)): Remove
1987         constraint that traits_type must be the same, as per LWG 3857.
1988         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc:
1989         Explicit conversion between different specializations should be
1990         allowed.
1991         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc:
1992         Likewise.
1993
1994 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
1995
1996         * include/std/syncstream (basic_osyncstream::operator=): Remove
1997         noexcept, as per LWG 3867.
1998
1999 2024-02-02  Jonathan Wakely  <jwakely@redhat.com>
2000
2001         * include/std/generator (promise_type::yield_value): Remove
2002         noexcept from fourth overload, as per LWG 3894.
2003
2004 2024-02-01  Patrick Palka  <ppalka@redhat.com>
2005
2006         PR libstdc++/113309
2007         PR libstdc++/109203
2008         * include/bits/ranges_util.h (__detail::__pair_like): Don't
2009         define in C++23 mode.
2010         (__detail::__pair_like_convertible_from): Adjust as per P2165R4.
2011         (__detail::__is_subrange<subrange>): Moved from <ranges>.
2012         (__detail::__is_tuple_like_v<subrange>): Likewise.
2013         * include/bits/stl_iterator.h: Include <bits/utility.h> for
2014         C++23.
2015         (__different_from): Move to <concepts>.
2016         (__iter_key_t): Adjust for C++23 as per P2165R4.
2017         (__iter_val_t): Likewise.
2018         * include/bits/stl_pair.h (pair, array): Forward declare.
2019         (get): Forward declare all overloads relevant to P2165R4
2020         tuple-like constructors.
2021         (__is_tuple_v): Define for C++23.
2022         (__is_tuple_like_v): Define for C++23.
2023         (__tuple_like): Define for C++23 as per P2165R4.
2024         (__pair_like): Define for C++23 as per P2165R4.
2025         (__eligibile_tuple_like): Define for C++23.
2026         (__eligibile_pair_like): Define for C++23.
2027         (pair::_S_constructible_from_pair_like): Define for C++23.
2028         (pair::_S_convertible_from_pair_like): Define for C++23.
2029         (pair::_S_dangles_from_pair_like): Define for C++23.
2030         (pair::pair): Define overloads taking a tuple-like type for
2031         C++23 as per P2165R4.
2032         (pair::_S_assignable_from_tuple_like): Define for C++23.
2033         (pair::_S_const_assignable_from_tuple_like): Define for C++23.
2034         (pair::operator=): Define overloads taking a tuple-like type for
2035         C++23 as per P2165R4.
2036         * include/bits/utility.h (ranges::__detail::__is_subrange):
2037         Moved from <ranges>.
2038         * include/bits/version.def (tuple_like): Define for C++23.
2039         * include/bits/version.h: Regenerate.
2040         * include/std/concepts (__different_from): Moved from
2041         <bits/stl_iterator.h>.
2042         (ranges::__swap::__adl_swap): Clarify which __detail namespace.
2043         * include/std/map (__cpp_lib_tuple_like): Define C++23.
2044         * include/std/ranges (__detail::__is_subrange): Moved to
2045         <bits/utility.h>.
2046         (__detail::__is_subrange<subrange>): Moved to <bits/ranges_util.h>
2047         (__detail::__has_tuple_element): Adjust for C++23 as per P2165R4.
2048         (__detail::__tuple_or_pair): Remove as per P2165R4.  Replace all
2049         uses with plain tuple as per P2165R4.
2050         * include/std/tuple (__cpp_lib_tuple_like): Define for C++23.
2051         (__tuple_like_tag_t): Define for C++23.
2052         (__tuple_cmp): Forward declare for C++23.
2053         (_Tuple_impl::_Tuple_impl): Define overloads taking
2054         __tuple_like_tag_t and a tuple-like type for C++23.
2055         (_Tuple_impl::_M_assign): Likewise.
2056         (tuple::__constructible_from_tuple_like): Define for C++23.
2057         (tuple::__convertible_from_tuple_like): Define for C++23.
2058         (tuple::__dangles_from_tuple_like): Define for C++23.
2059         (tuple::tuple): Define overloads taking a tuple-like type for
2060         C++23 as per P2165R4.
2061         (tuple::__assignable_from_tuple_like): Define for C++23.
2062         (tuple::__const_assignable_from_tuple_like): Define for C++23.
2063         (tuple::operator=): Define overloads taking a tuple-like type
2064         for C++23 as per P2165R4.
2065         (tuple::__tuple_like_common_comparison_category): Define for C++23.
2066         (tuple::operator<=>): Define overload taking a tuple-like type
2067         for C++23 as per P2165R4.
2068         (array, get): Forward declarations moved to <bits/stl_pair.h>.
2069         (tuple_cat): Constrain with __tuple_like for C++23 as per P2165R4.
2070         (apply): Likewise.
2071         (make_from_tuple): Likewise.
2072         (__tuple_like_common_reference): Define for C++23.
2073         (basic_common_reference): Adjust as per P2165R4.
2074         (__tuple_like_common_type): Define for C++23.
2075         (common_type): Adjust as per P2165R4.
2076         * include/std/unordered_map (__cpp_lib_tuple_like): Define for
2077         C++23.
2078         * include/std/utility (__cpp_lib_tuple_like): Define for C++23.
2079         * testsuite/std/ranges/zip/1.cc (test01): Adjust to handle pair
2080         and 2-tuple interchangeably.
2081         (test05): New test.
2082         * testsuite/20_util/pair/p2165r4.cc: New test.
2083         * testsuite/20_util/tuple/p2165r4.cc: New test.
2084
2085 2024-02-01  Patrick Palka  <ppalka@redhat.com>
2086
2087         * include/bits/stl_pair.h (pair::_S_const_assignable): Define,
2088         factored out from ...
2089         (pair::operator=): ... the constraints of the const overloads.
2090
2091 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
2092
2093         * include/bits/version.tpl: Do not use def-file-line for each
2094         macro being defined.
2095         * include/bits/version.h: Regenerate.
2096
2097 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
2098
2099         * testsuite/25_algorithms/copy/debug/constexpr_neg.cc: Adjust
2100         dg-error pattern.
2101         * testsuite/25_algorithms/copy_backward/debug/constexpr_neg.cc:
2102         Likewise.
2103         * testsuite/25_algorithms/equal/debug/constexpr_neg.cc:
2104         Likewise.
2105         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_neg.cc:
2106         Likewise.
2107         * testsuite/25_algorithms/lower_bound/debug/constexpr_partitioned_pred_neg.cc:
2108         Likewise.
2109         * testsuite/25_algorithms/lower_bound/debug/constexpr_valid_range_neg.cc:
2110         Likewise.
2111         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_neg.cc:
2112         Likewise.
2113         * testsuite/25_algorithms/upper_bound/debug/constexpr_partitioned_pred_neg.cc:
2114         Likewise.
2115         * testsuite/25_algorithms/upper_bound/debug/constexpr_valid_range_neg.cc:
2116         Likewise.
2117
2118 2024-02-01  Jonathan Wakely  <jwakely@redhat.com>
2119
2120         * include/experimental/internet (network_v4::to_string()):
2121         Remove lambda and use of resize_and_overwrite.
2122
2123 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
2124
2125         * acinclude.m4 (GLIBCXX_CHECK_TEXT_ENCODING): Use <xlocale.h> if
2126         needed for newlocale.
2127         * configure: Regenerate.
2128         * src/c++26/text_encoding.cc: Use <xlocale.h>.
2129
2130 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
2131             Ewan Higgs  <ewan.higgs@gmail.com>
2132
2133         * include/bits/text_encoding-data.h: Regenerate.
2134         * scripts/gen_text_encoding_data.py: Add extra_aliases dict
2135         containing "ASCII".
2136         * testsuite/std/text_encoding/cons.cc: Check "ascii" is known.
2137
2138 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
2139
2140         * doc/xml/manual/using.xml: Update tables of supported headers.
2141         * doc/html/*: Regenerate.
2142
2143 2024-01-31  Jonathan Wakely  <jwakely@redhat.com>
2144
2145         * include/std/bitset (_Base_bitset::_M_do_to_ullong): Avoid
2146         -Wshift-count-overflow warning.
2147
2148 2024-01-30  Jonathan Wakely  <jwakely@redhat.com>
2149
2150         * testsuite/std/time/clock/gps/io.cc: Fix expected result in
2151         assertion and call test_format() from main.
2152
2153 2024-01-29  François Dumont  <fdumont@gcc.gnu.org>
2154
2155         * doc/xml/manual/debug_mode.xml: Link against libstdc++exp.a to use
2156         _GLIBCXX_DEBUG_BACKTRACE macro.
2157
2158 2024-01-24  Huanghui Nie  <nnnjkk@gmail.com>
2159             Théo Papadopoulo   <papadopoulo@gmail.com>
2160
2161         * include/bits/hashtable.h (_Hahstable<>::_M_remove_bucket_begin): Remove
2162         _M_before_begin check and cleanup implementation.
2163
2164 2024-01-22  Jonathan Wakely  <jwakely@redhat.com>
2165
2166         * testsuite/std/time/clock/file/io.cc: Fix expected result in
2167         assertion and call test_format() from main.
2168
2169 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
2170
2171         PR libstdc++/113500
2172         * include/bits/chrono_io.h (__formatter_chrono::_M_S): Fix
2173         printing of subseconds with floating-point rep.
2174         (__formatter_chrono::_M_format_to_ostream): Do not write
2175         time_point specializations directly to the ostream.
2176         (formatter<chrono::sys_time<D>, C>::parse): Do not allow an
2177         empty chrono-spec if the type fails to meet the constraints for
2178         writing to an ostream with operator<<.
2179         * testsuite/std/time/clock/file/io.cc: Check formatting
2180         non-integral times with empty chrono-specs.
2181         * testsuite/std/time/clock/gps/io.cc: Likewise.
2182         * testsuite/std/time/clock/utc/io.cc: Likewise.
2183         * testsuite/std/time/hh_mm_ss/io.cc: Likewise.
2184
2185 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
2186
2187         * include/bits/chrono.h (__file_clock::from_sys)
2188         (__file_clock::to_sys, __file_clock::_S_from_sys)
2189         (__file_clock::_S_to_sys): Use common_type for return type.
2190         * testsuite/std/time/clock/file/members.cc: Check round trip
2191         conversion for time with lower precision that seconds.
2192
2193 2024-01-21  Jonathan Wakely  <jwakely@redhat.com>
2194
2195         PR libstdc++/113512
2196         * include/std/format (__formatter_fp::format): Fix logic for
2197         alternate forms.
2198         * testsuite/std/format/functions/format.cc: Check buggy cases of
2199         alternate forms with g presentation type.
2200
2201 2024-01-20  Marek Polacek  <polacek@redhat.com>
2202
2203         PR c++/111410
2204         * include/std/ranges: Add #pragma to disable -Wdangling-reference with
2205         std::ranges::views::__adaptor::operator|.
2206
2207 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
2208
2209         * include/std/format (_Spec::_M_parse_fill_and_align): Do not
2210         use CTAD for _Utf32_view.
2211
2212 2024-01-19  Jonathan Wakely  <jwakely@redhat.com>
2213
2214         PR libstdc++/108822
2215         * include/std/tuple (__glibcxx_no_dangling_refs) [C++17]: Fix
2216         wrong fold-operator.
2217         * testsuite/20_util/tuple/dangling_ref.cc: Check tuples with one
2218         element and three elements. Check allocator-extended
2219         constructors.
2220
2221 2024-01-19  Patrick Palka  <ppalka@redhat.com>
2222
2223         * include/precompiled/stdc++.h [_GLIBCXX_HOSTED]: Include
2224         <print> and <text_encoding> for C++23 and C++26 respectively.
2225
2226 2024-01-18  Patrick Palka  <ppalka@redhat.com>
2227
2228         * include/bits/stl_pair.h [__cplusplus > 202002L]:
2229         Guard P2321R2 changes with __glibcxx_ranges_zip instead.
2230
2231 2024-01-18  Patrick Palka  <ppalka@redhat.com>
2232
2233         * include/std/tuple [__cplusplus > 202002L]: Guard P2321R2
2234         changes with __cpp_lib_ranges_zip instead.
2235
2236 2024-01-18  Patrick Palka  <ppalka@redhat.com>
2237
2238         PR libstdc++/109536
2239         * include/debug/safe_base.h (_Safe_sequence_base::_M_swap):
2240         Remove _GLIBCXX20_CONSTEXPR from non-inline member function.
2241         * include/debug/safe_iterator.h
2242         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_BEGIN): Define.
2243         (_GLIBCXX20_CONSTEXPR_NON_LITERAL_SCOPE_END): Define.
2244         (_Safe_iterator::operator=): Use them around the code path that
2245         defines a variable of type __gnu_cxx::__scoped_lock.
2246         (_Safe_iterator::operator++): Likewise.
2247         (_Safe_iterator::operator--): Likewise.
2248         (_Safe_iterator::operator+=): Likewise.
2249         (_Safe_iterator::operator-=): Likewise.
2250         * testsuite/23_containers/vector/element_access/constexpr.cc
2251         (test_iterators): Test more iterator operations.
2252         * testsuite/23_containers/vector/bool/element_access/constexpr.cc
2253         (test_iterators): Likewise.
2254         * testsuite/std/ranges/adaptors/all.cc (test08) [_GLIBCXX_DEBUG]:
2255         Remove.
2256
2257 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
2258
2259         * include/bits/unicode.h (__charset_alias_match): Initialize
2260         __var_a and __var_b.
2261
2262 2024-01-18  Jonathan Wakely  <jwakely@redhat.com>
2263
2264         PR libstdc++/113450
2265         * testsuite/std/format/functions/format.cc: Use signed char
2266         instead of int8_t.
2267
2268 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
2269
2270         PR libstdc++/113318
2271         * acinclude.m4 (GLIBCXX_CONFIGURE): Add c++26 directory.
2272         (GLIBCXX_CHECK_TEXT_ENCODING): Define.
2273         * config.h.in: Regenerate.
2274         * configure: Regenerate.
2275         * configure.ac: Use GLIBCXX_CHECK_TEXT_ENCODING.
2276         * include/Makefile.am: Add new headers.
2277         * include/Makefile.in: Regenerate.
2278         * include/bits/locale_classes.h (locale::encoding): Declare new
2279         member function.
2280         * include/bits/unicode.h (__charset_alias_match): New function.
2281         * include/bits/text_encoding-data.h: New file.
2282         * include/bits/version.def (text_encoding): Define.
2283         * include/bits/version.h: Regenerate.
2284         * include/std/text_encoding: New file.
2285         * src/Makefile.am: Add new subdirectory.
2286         * src/Makefile.in: Regenerate.
2287         * src/c++26/Makefile.am: New file.
2288         * src/c++26/Makefile.in: New file.
2289         * src/c++26/text_encoding.cc: New file.
2290         * src/experimental/Makefile.am: Include c++26 convenience
2291         library.
2292         * src/experimental/Makefile.in: Regenerate.
2293         * python/libstdcxx/v6/printers.py (StdTextEncodingPrinter): New
2294         printer.
2295         * scripts/gen_text_encoding_data.py: New file.
2296         * testsuite/22_locale/locale/encoding.cc: New test.
2297         * testsuite/ext/unicode/charset_alias_match.cc: New test.
2298         * testsuite/std/text_encoding/cons.cc: New test.
2299         * testsuite/std/text_encoding/members.cc: New test.
2300         * testsuite/std/text_encoding/requirements.cc: New test.
2301
2302 2024-01-17  Jonathan Wakely  <jwakely@redhat.com>
2303
2304         * include/bits/unicode.h (_Grapheme_cluster_view): Require view.
2305         Do not use CTAD for _Utf32_view.
2306         (__format_width, __truncate): Do not use CTAD.
2307         (enable_borrowed_range<_Utf_view<T, R>>): Define specialization.
2308         (enable_borrowed_range<_Grapheme_cluster_view<R>>): Likewise.
2309
2310 2024-01-17  Patrick Palka  <ppalka@redhat.com>
2311
2312         * include/std/ranges (views::_CartesianProduct::operator()):
2313         Adjust identity case as per P2540R1.
2314         * testsuite/std/ranges/cartesian_product/1.cc (test01):
2315         Adjust expected result of the identity case.
2316
2317 2024-01-15  Patrick Palka  <ppalka@redhat.com>
2318
2319         * include/std/variant (__detail::__variant::_Variadic_union):
2320         Add bool __trivially_destructible template parameter.
2321         (__detail::__variant::_Variadic_union::~_Variadic_union):
2322         Use __trivially_destructible in constraints instead.
2323         (__detail::__variant::_Variant_storage): Pass
2324         __trivially_destructible value to _Variadic_union.
2325
2326 2024-01-15  Patrick Palka  <ppalka@redhat.com>
2327
2328         * include/bits/stl_iterator.h (const_iterator): Define conversion
2329         operators as per P2836R1.
2330         * include/bits/version.def (ranges_as_const): Update value.
2331         * include/bits/version.h: Regenerate.
2332         * testsuite/24_iterators/const_iterator/1.cc (test04): New test.
2333         * testsuite/std/ranges/adaptors/as_const/1.cc: Adjust expected
2334         value of __cpp_lib_ranges_as_const.
2335         * testsuite/std/ranges/version_c++23.cc: Likewise.
2336
2337 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
2338
2339         PR libstdc++/108822
2340         * include/std/tuple (__assignable, __is_nothrow_assignable):
2341         Move pre-C++20 definitions adjacent to their use.
2342
2343 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
2344
2345         PR testsuite/113366
2346         * include/std/format (basic_format_arg): Use __formattable
2347         variable template instead of __format::__formattable_with
2348         concept.
2349
2350 2024-01-15  Jonathan Wakely  <jwakely@redhat.com>
2351
2352         * src/c++20/tzdata.zi: Import new file from 2023d release.
2353         * src/c++20/tzdb.cc (tzdb_list::_Node::_S_read_leap_seconds)
2354         Update expiry date for leap seconds list.
2355
2356 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
2357
2358         PR libstdc++/108822
2359         * include/std/tuple (tuple): Add checks for dangling references.
2360         Reimplement constraints and constant expressions using C++20
2361         features.
2362         * include/std/type_traits [C++20]
2363         (__is_implicitly_default_constructible_v): Define.
2364         (__is_implicitly_default_constructible): Use variable template.
2365         * testsuite/20_util/tuple/dangling_ref.cc: New test.
2366
2367 2024-01-13  Patrick Palka  <ppalka@redhat.com>
2368
2369         PR libstdc++/108827
2370         PR libstdc++/111327
2371         * include/bits/version.def (bind_back): Define.
2372         * include/bits/version.h: Regenerate.
2373         * include/std/functional (_Bind_back): Define for C++23.
2374         (bind_back): Likewise.
2375         * testsuite/20_util/function_objects/bind_back/1.cc: New test
2376         (adapted from corresponding bind_front test).
2377         * testsuite/20_util/function_objects/bind_back/111327.cc: Likewise.
2378
2379 2024-01-13  Patrick Palka  <ppalka@redhat.com>
2380
2381         * include/std/functional (_Bind_front): Remove =default special
2382         member function declarations.
2383         (_Bind_front::operator()): Implement using C++23 deducing this
2384         when available.
2385         * testsuite/20_util/function_objects/bind_front/111327.cc:
2386         Adjust testcase to expect better errors in C++23 mode.
2387
2388 2024-01-13  Patrick Palka  <ppalka@redhat.com>
2389
2390         * include/std/ranges (views::__adaptor::operator|): Perform
2391         perfect forwarding of arguments.
2392         (views::__adaptor::_RangeAdaptor::operator()): Pass dummy
2393         first argument to _Partial.
2394         (views::__adaptor::_Partial::_Partial): Likewise.  Add dummy
2395         first parameter.
2396         (views::__adaptor::_Pipe::_Pipe): Perform perfect forwarding
2397         of arguments.
2398         (to): Pass dummy first argument to _Partial.
2399
2400 2024-01-13  Jonathan Wakely  <jwakely@redhat.com>
2401
2402         PR libstdc++/107466
2403         * include/bits/random.tcc (subtract_with_carry_engine::seed):
2404         Implement proposed resolution of LWG 4014.
2405         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error
2406         line number.
2407         * testsuite/26_numerics/random/subtract_with_carry_engine/cons/lwg3809.cc:
2408         Check for expected result of 64-bit engine with seed that
2409         doesn't fit in 32-bits.
2410
2411 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
2412
2413         PR libstdc++/113320
2414         * include/std/format (__format::_Runtime_format_string): Add
2415         constructor and disable copy operations.
2416         (basic_format_string(_Runtime_format_string)): Add noexcept and
2417         take parameter by value not rvalue reference.
2418         (runtime_format): Add noexcept.
2419         * testsuite/std/format/runtime_format.cc: Check noexcept. Check
2420         that construction is only possible from prvalues, not xvalues.
2421
2422 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
2423
2424         PR libstdc++/105505
2425         * include/bits/stl_pair.h (pair::pair(U1&&, U2&&)) [C++23]: Add
2426         default template arguments, as per P1951R1.
2427         * testsuite/20_util/pair/cons/default_tmpl_args.cc: New test.
2428
2429 2024-01-12  Jonathan Wakely  <jwakely@redhat.com>
2430
2431         * include/std/format (__format::_Arg_store): Fix PR number in
2432         comment. Simplify preprocessor code.
2433
2434 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
2435
2436         * doc/xml/manual/evolution.xml: Fix spelling.
2437         * doc/html/manual/api.html: Regenerate.
2438
2439 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
2440
2441         * doc/xml/manual/evolution.xml: Document addition of
2442         libstdc++exp.a.
2443         * doc/html/*: Regenerate.
2444
2445 2024-01-11  Marcus Haehnel  <marcus.haehnel@kernkonzept.com>
2446
2447         * libsupc++/eh_unex_handler.cc: Adjust definition type to
2448         declaration.
2449
2450 2024-01-11  Michael Levine  <mlevine55@bloomberg.net>
2451
2452         * include/std/ranges (__glibcxx_want_ranges_iota): Remove
2453         duplicate definition.
2454
2455 2024-01-11  François Dumont  <fdumont@gcc.gnu.org>
2456
2457         PR libstdc++/112477
2458         * src/c++11/debug.cc
2459         (_Safe_iterator_base::_M_attach): Reset _M_version to 0 if attaching to null
2460         sequence.
2461         (_Safe_iterator_base::_M_attach_single): Likewise.
2462         (_Safe_local_iterator_base::_M_attach): Likewise.
2463         (_Safe_local_iterator_base::_M_attach_single): Likewise.
2464         * testsuite/23_containers/map/debug/112477.cc: New test case.
2465
2466 2024-01-11  Patrick Palka  <ppalka@redhat.com>
2467
2468         * include/bits/move.h (__like_t): Define in C++23 mode.
2469         * include/std/ranges (views::__adaptor::Partial::operator()):
2470         Implement using C++23 deducing this when available.
2471         (views::__adaptor::_Pipe::operator()): Likewise.
2472         * testsuite/std/ranges/adaptors/100577.cc: Adjust testcase to
2473         accept new "no match for call" errors issued in C++23 mode.
2474         * testsuite/std/ranges/adaptors/lazy_split_neg.cc: Likewise.
2475
2476 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
2477
2478         * python/libstdcxx/v6/printers.py (StdIntegralConstantPrinter):
2479         Add printer for std::integral_constant.
2480         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test it.
2481
2482 2024-01-11  Jonathan Wakely  <jwakely@redhat.com>
2483
2484         PR libstdc++/113258
2485         * libsupc++/new_opa.cc: Prefer to use posix_memalign if
2486         available.
2487
2488 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
2489
2490         * src/filesystem/ops-common.h (stat_type): Use using.
2491
2492 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
2493
2494         PR libstdc++/113250
2495         * src/c++17/fs_ops.cc (fs::equivalent): Use || instead of &&.
2496         * src/filesystem/ops.cc (fs::equivalent): Likewise.
2497         * testsuite/27_io/filesystem/operations/equivalent.cc: Handle
2498         error codes.
2499         * testsuite/experimental/filesystem/operations/equivalent.cc:
2500         Likewise.
2501
2502 2024-01-11  Ken Matsui  <kmatsui@gcc.gnu.org>
2503
2504         * include/std/type_traits (is_compound): Do not use __not_.
2505         (is_compound_v): Use is_fundamental_v instead.
2506
2507 2024-01-11  Patrick Palka  <ppalka@redhat.com>
2508
2509         * include/bits/utility.h (_Nth_type): Use
2510         _GLIBCXX_USE_BUILTIN_TRAIT instead of __has_builtin.
2511
2512 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
2513
2514         * include/bits/unicode-data.h: Regenerate.
2515         * include/bits/unicode.h (_Utf_iterator::operator++()): Fix off
2516         by one error.
2517         (__incb_property): Add missing check for values before the
2518         first edge.
2519         (__is_extended_pictographic): Invert return values to fix
2520         copy&pasted logic.
2521         (_Grapheme_cluster_view::_Iterator): Remove second iterator
2522         member and find end of cluster lazily.
2523         * testsuite/ext/unicode/grapheme_view.cc: New test.
2524         * testsuite/ext/unicode/properties.cc: New test.
2525         * testsuite/ext/unicode/view.cc: New test.
2526
2527 2024-01-09  Andreas Schwab  <schwab@linux-m68k.org>
2528
2529         * scripts/extract_symvers.in: Require final colon to only match
2530         .dsynsym in the header of the dynamic symtab.
2531
2532 2024-01-09  Jonathan Wakely  <jwakely@redhat.com>
2533
2534         * include/bits/chrono_io.h (__formatter_chrono::_M_F): Simplify
2535         handling of string returned from std::format.
2536         (__formatter_chrono::_M_R_T): Likewise.
2537
2538 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
2539
2540         * include/bits/unicode.h (__null_sentinel): Remove.
2541         * testsuite/17_intro/names.cc: Add __null_sentinel.
2542
2543 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
2544
2545         * include/std/format (__format::_Runtime_format_string): Define
2546         new class template.
2547         (basic_format_string): Add non-consteval constructor for runtime
2548         format strings.
2549         (runtime_format): Define new function for C++26.
2550         * testsuite/std/format/runtime_format.cc: New test.
2551
2552 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
2553
2554         * include/bits/chrono_io.h (__formatter_chrono): Always use
2555         lvalue arguments to make_format_args.
2556         * include/std/format (make_format_args): Change parameter pack
2557         from forwarding references to lvalue references. Remove use of
2558         remove_reference_t which is now unnecessary.
2559         (format_to, formatted_size): Remove incorrect forwarding of
2560         arguments.
2561         * include/std/ostream (print): Remove forwarding of arguments.
2562         * include/std/print (print): Likewise.
2563         * testsuite/20_util/duration/io.cc: Use lvalues as arguments to
2564         make_format_args.
2565         * testsuite/std/format/arguments/args.cc: Likewise.
2566         * testsuite/std/format/arguments/lwg3810.cc: Likewise.
2567         * testsuite/std/format/functions/format.cc: Likewise.
2568         * testsuite/std/format/functions/vformat_to.cc: Likewise.
2569         * testsuite/std/format/string.cc: Likewise.
2570         * testsuite/std/time/day/io.cc: Likewise.
2571         * testsuite/std/time/month/io.cc: Likewise.
2572         * testsuite/std/time/weekday/io.cc: Likewise.
2573         * testsuite/std/time/year/io.cc: Likewise.
2574         * testsuite/std/time/year_month_day/io.cc: Likewise.
2575         * testsuite/std/format/arguments/args_neg.cc: New test.
2576
2577 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
2578
2579         * include/Makefile.am: Add new headers.
2580         * include/Makefile.in: Regenerate.
2581         * include/bits/unicode.h: New file.
2582         * include/bits/unicode-data.h: New file.
2583         * include/std/format: Include <bits/unicode.h>.
2584         (__literal_encoding_is_utf8): Move to <bits/unicode.h>.
2585         (_Spec::_M_fill): Change type to char32_t.
2586         (_Spec::_M_parse_fill_and_align): Read a Unicode scalar value
2587         instead of a single character.
2588         (__write_padded): Change __fill_char parameter to char32_t and
2589         encode it into the output.
2590         (__formatter_str::format): Use new __unicode::__field_width and
2591         __unicode::__truncate functions.
2592         * include/std/ostream: Adjust namespace qualification for
2593         __literal_encoding_is_utf8.
2594         * include/std/print: Likewise.
2595         * src/c++23/print.cc: Add [[unlikely]] attribute to error path.
2596         * testsuite/ext/unicode/view.cc: New test.
2597         * testsuite/std/format/functions/format.cc: Add missing examples
2598         from the standard demonstrating alignment with non-ASCII
2599         characters. Add examples checking correct handling of extended
2600         grapheme clusters.
2601
2602 2024-01-08  Jonathan Wakely  <jwakely@redhat.com>
2603
2604         * include/bits/version.def (format_uchar): Define.
2605         * include/bits/version.h: Regenerate.
2606         * include/std/format (formatter<C, C>::format): Check for
2607         _Pres_c and call _M_format_character directly. Cast C to its
2608         unsigned equivalent for formatting as an integer.
2609         (formatter<char, wchar_t>::format): Likewise.
2610         (basic_format_arg(T&)): Store char arguments as unsigned char
2611         for formatting to a wide string.
2612         * testsuite/std/format/functions/format.cc: Adjust test. Check
2613         formatting of
2614
2615 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
2616
2617         PR libstdc++/112997
2618         * libsupc++/unwind-cxx.h (__cxa_call_terminate): Change first
2619         parameter to void*.
2620
2621 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
2622
2623         * testsuite/20_util/variant/87619.cc: Remove dg-timeout-factor.
2624
2625 2024-01-07  Jonathan Wakely  <jwakely@redhat.com>
2626
2627         * include/std/type_traits (is_trivially_destructible_v): Use
2628         built-in directly when concepts are supported.
2629         * testsuite/20_util/is_trivially_destructible/value_v.cc: New
2630         test.
2631
2632 2024-01-06  Gwenole Beauchesne  <gb.devel@gmail.com>
2633
2634         * testsuite/tr1/8_c_compatibility/cinttypes/functions.cc: Use
2635         nonnull arguments to strtoimax() and wcstoimax() functions.
2636
2637 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
2638
2639         * src/c++17/fs_path.cc (path::_List::reserve): Limit maximum
2640         size and check for overflows in arithmetic.
2641         (path::operator/=(const path&)): Remove redundant exponential
2642         growth calculation.
2643
2644 2024-01-05  Martin Küttler  <martin.kuettler@kernkonzept.com>
2645
2646         * src/c++17/fs_path.cc (path::_List::reserve): Avoid
2647         floating-point arithmetic.
2648
2649 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
2650
2651         PR libstdc++/113241
2652         * include/std/type_traits (is_convertible_v): Guard use of
2653         built-in with preprocessor check.
2654
2655 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
2656
2657         PR libstdc++/113200
2658         * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Use
2659         __builtin_constant_p to check for unrelated pointers that cannot
2660         be compared during constant evaluation.
2661         * testsuite/21_strings/char_traits/requirements/113200.cc: New
2662         test.
2663
2664 2024-01-05  Cassio Neri  <cassio.neri@gmail.com>
2665
2666         * include/std/chrono: Fix + and - for months and weekdays.
2667         * testsuite/std/time/month/1.cc: Add constexpr tests against overflow.
2668         * testsuite/std/time/month/2.cc: New test for extreme values.
2669         * testsuite/std/time/weekday/1.cc: Add constexpr tests against overflow.
2670         * testsuite/std/time/weekday/2.cc: New test for extreme values.
2671
2672 2024-01-05  Jonathan Wakely  <jwakely@redhat.com>
2673
2674         PR libstdc++/113099
2675         * include/bits/locale_classes.tcc (__try_use_facet): Use
2676         if-constexpr for C++11 and up.
2677
2678 2024-01-05  Ken Matsui  <kmatsui@gcc.gnu.org>
2679
2680         * include/std/type_traits: Use _GLIBCXX_USE_BUILTIN_TRAIT.
2681
2682 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
2683
2684         * include/std/generator (_Subyield_state::_M_jump_in): Fix typo
2685         reported by Will Hawkins <hawkinsw@obs.cr>.
2686
2687 2024-01-04  Arsen Arsenović  <arsen@aarsen.me>
2688
2689         * include/std/generator (_Stateless_alloc): Rename typename _A
2690         to _All.
2691
2692 2024-01-03  Patrick Palka  <ppalka@redhat.com>
2693
2694         PR testsuite/113175
2695         * testsuite/std/ranges/iota/max_size_type.cc (test02): Reduce
2696         'limit' to 100 from 1000 and adjust 'log2_limit' accordingly.
2697         (test03): Likewise.
2698
2699 \f
2700 Copyright (C) 2024 Free Software Foundation, Inc.
2701
2702 Copying and distribution of this file, with or without modification,
2703 are permitted in any medium without royalty provided the copyright
2704 notice and this notice are preserved.