libstdc++-v3/ChangeLog

   1 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/104719
   4         * include/std/array (array::size(), array::max_size())
   5         (array::empty(), array::data()): Add  always_inline attribute.
   6
   7 2022-05-04  Jonathan Wakely  <jwakely@redhat.com>
   8
   9         PR libstdc++/104719
  10         * include/std/array (__array_traits::_S_ref): Remove.
  11         (__array_traits::_S_ptr): Remove.
  12         (__array_traits<T, 0>::_Type): Define operator[] and operator T*
  13         to provide an array-like API.
  14         (array::_AT_Type): Remove public typeef.
  15         (array::operator[], array::at, array::front, array::back): Use
  16         index operator to access _M_elems instead of _S_ref.
  17         (array::data): Use implicit conversion from _M_elems to pointer.
  18         (swap(array&, array&)): Use __enable_if_t helper.
  19         (get<I>): Use index operator to access _M_elems.
  20         * testsuite/23_containers/array/tuple_interface/get_neg.cc:
  21         Adjust dg-error line numbers.
  22
  23 2022-05-03  Alexandre Oliva  <oliva@adacore.com>
  24
  25         PR c++/105324
  26         * testsuite/20_util/from_chars/pr105324.cc: Guard test body
  27         with conditional for floating-point overloads of from_char.
  28
  29 2022-05-02  Patrick Palka  <ppalka@redhat.com>
  30
  31         PR libstdc++/103911
  32         * src/c++17/floating_from_chars.cc (find_end_of_float): Accept
  33         two delimeters for the exponent part in the form of a possibly
  34         NULL string of length two.  Don't use std::tolower.
  35         (pattern): Adjust calls to find_end_of_float accordingly.
  36
  37 2022-05-02  Patrick Palka  <ppalka@redhat.com>
  38
  39         PR libstdc++/105441
  40         * src/c++17/floating_from_chars.cc (__floating_from_chars_hex):
  41         Also accept 'P' as the start of the exponent.
  42         * testsuite/20_util/from_chars/7.cc: Add corresponding testcase.
  43
  44 2022-04-29  Jonathan Wakely  <jwakely@redhat.com>
  45
  46         PR libstdc++/105417
  47         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt:
  48         Regenerate.
  49         * src/c++11/compatibility-ldbl-alt128.cc [_GLIBCXX_USE_DUAL_ABI]:
  50         Define __gnu_ieee128::num_get<C>::_M_extract_int[abi:cxx11]<I>
  51         symbols as aliases for corresponding symbols without abi-tag.
  52
  53 2022-04-29  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
  54
  55         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
  56         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
  57         Likewise.
  58         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
  59         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
  60         Likewise.
  61
  62 2022-04-28  Jonathan Wakely  <jwakely@redhat.com>
  63
  64         PR libstdc++/99290
  65         * src/c++17/fs_ops.cc (fs::copy): Pass error_code to
  66         directory_iterator constructor, and check on each iteration.
  67         * src/filesystem/ops.cc (fs::copy): Likewise.
  68         * testsuite/27_io/filesystem/operations/copy.cc: Check for
  69         errors during recursion.
  70         * testsuite/experimental/filesystem/operations/copy.cc:
  71         Likewise.
  72
  73 2022-04-28  François Dumont  <fdumont@gcc.gnu.org>
  74
  75         * config/abi/pre/gnu-versioned-namespace.ver: Remove
  76         std::random_device::* pattern.
  77
  78 2022-04-27  Jakub Jelinek  <jakub@redhat.com>
  79
  80         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
  81         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
  82         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
  83         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
  84         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
  85         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
  86         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
  87         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
  88
  89 2022-04-27  Jonathan Wakely  <jwakely@redhat.com>
  90
  91         * python/libstdcxx/v6/printers.py (SharedPointerPrinter): Add
  92         support for atomic<shared_ptr<T>> and atomic<weak_ptr<T>>.
  93         (StdAtomicPrinter): New printer.
  94         (build_libstdcxx_dictionary): Register new printer.
  95         * testsuite/libstdc++-prettyprinters/cxx11.cc: Test std::atomic.
  96         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test atomic smart
  97         pointers.
  98
  99 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
 100
 101         * include/bits/shared_ptr_atomic.h (atomic<shared_ptr>): Add
 102         constructor for constant initialization from nullptr_t.
 103         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
 104         Check for new constructor.
 105
 106 2022-04-26  Jonathan Wakely  <jwakely@redhat.com>
 107
 108         * include/bits/fs_path.h (hash<filesystem::path>): Define.
 109         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc:
 110         Check std::hash specialization.
 111
 112 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
 113
 114         * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define
 115         conditionally.
 116         * include/bits/unique_ptr.h (__cpp_lib_constexpr_memory):
 117         Define for C++23.
 118         (default_delete, default_delete<T[]>, __uniq_ptr_impl)
 119         (unique_ptr, unique_ptr<T[], D>): Add constexpr to all member
 120         functions.
 121         * include/std/version (__cpp_lib_constexpr_memory): Define new
 122         value for C++23.
 123         * testsuite/20_util/unique_ptr/assign/constexpr.cc: New test.
 124         * testsuite/20_util/unique_ptr/comparison/constexpr.cc: New test.
 125         * testsuite/20_util/unique_ptr/cons/constexpr_c++20.cc: New test.
 126         * testsuite/20_util/unique_ptr/creation/constexpr.cc: New test.
 127         * testsuite/20_util/unique_ptr/modifiers/constexpr.cc: New test.
 128         * testsuite/20_util/unique_ptr/specialized_algorithms/constexpr.cc:
 129         New test.
 130
 131 2022-04-25  Jonathan Wakely  <jwakely@redhat.com>
 132
 133         PR libstdc++/105375
 134         * include/std/future (packaged_task): Add deduction guides.
 135         * testsuite/30_threads/packaged_task/cons/deduction.cc: New test.
 136
 137 2022-04-25  Philipp Fent  <fent@in.tum.de>
 138
 139         * python/libstdcxx/v6/printers.py (StdSpanPrinter._iterator):
 140         Rename as iterator.
 141         (StdInitializerListPrinter): Define new printer.
 142         (build_libstdcxx_dictionary): Register new printer.
 143         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check printer for
 144         initializer_list.
 145
 146 2022-04-22  Thomas W Rodgers  <trodgers@redhat.com>
 147
 148         PR libstdc++/102994
 149         * include/bits/atomic_base.h (atomic_flag::notify_one,
 150         notify_all): Remove const qualification.
 151         (__atomic_base::notify_one, notify_all): Likewise.
 152         * include/std/atomic (atomic<bool>::notify_one, notify_all):
 153         Likewise.
 154         (atomic::notify_one, notify_all): Likewise.
 155         (atomic<T*>::notify_one, notify_all): Likewise.
 156         (atomic_notify_one, atomic_notify_all): Likewise.
 157         * testsuite/29_atomics/atomic/wait_notify/102994.cc: Adjust test
 158         to account for change in notify_one/notify_all signature.
 159
 160 2022-04-21  Patrick Palka  <ppalka@redhat.com>
 161
 162         * include/std/charconv (__from_chars_alnum_to_val_table):
 163         Simplify initialization of __lower/__upper_letters.
 164         (__from_chars_alnum_to_val): Default the template parameter to
 165         false.
 166         * src/c++17/floating_from_chars.cc (starts_with_ci): Don't
 167         assume the uppercase and lowercase letters are contiguous.
 168         (__floating_from_chars_hex): Likewise.
 169
 170 2022-04-21  Patrick Palka  <ppalka@redhat.com>
 171
 172         PR c++/105297
 173         PR c++/105322
 174         * include/std/charconv (__from_chars_alnum_to_val): Make
 175         initializer for __table dependent in an artificial way.
 176
 177 2022-04-21  Jonathan Wakely  <jwakely@redhat.com>
 178
 179         PR libstdc++/105324
 180         * src/c++17/floating_from_chars.cc (buffer_resource::do_allocate):
 181         Remove assertion.
 182         * testsuite/20_util/from_chars/pr105324.cc: New test.
 183
 184 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
 185
 186         * testsuite/21_strings/basic_string_view/operations/copy/char/constexpr.cc:
 187         Check correct feature test macro.
 188
 189 2022-04-20  Jonathan Wakely  <jwakely@redhat.com>
 190
 191         PR libstdc++/93602
 192         * doc/xml/manual/prerequisites.xml: Document libiconv
 193         workarounds.
 194         * doc/html/manual/setup.html: Regenerate.
 195         * src/Makefile.am (CXXLINK): Add $(LTLIBICONV).
 196         * src/Makefile.in: Regenerate.
 197
 198 2022-04-19  Patrick Palka  <ppalka@redhat.com>
 199
 200         * src/c++17/floating_to_chars.cc (_GLIBCXX_ASSERTIONS): Don't
 201         define.
 202         (__floating_to_chars_shortest): Add __builtin_unreachable calls to
 203         squelch false-positive -Wmaybe-uninitialized and -Wreturn-type
 204         warnings.
 205         (__floating_to_chars_precision): Likewise.
 206
 207 2022-04-19  Philipp Fent  <fent@in.tum.de>
 208
 209         * python/libstdcxx/v6/printers.py (StdSpanPrinter): Define.
 210         * testsuite/libstdc++-prettyprinters/cxx20.cc: Test it.
 211
 212 2022-04-19  Jonathan Wakely  <jwakely@redhat.com>
 213
 214         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Fix shell operators.
 215         * configure: Regenerate.
 216
 217 2022-04-18  Patrick Palka  <ppalka@redhat.com>
 218
 219         * include/std/charconv (__from_chars_pow2_base): Manually
 220         unroll the first iteration of the main loop and simplify
 221         accordingly.
 222
 223 2022-04-15  Patrick Palka  <ppalka@redhat.com>
 224
 225         PR libstdc++/104858
 226         * include/bits/ranges_algo.h (__minmax_fn): Avoid dereferencing
 227         __first twice at the start.
 228         * testsuite/25_algorithms/minmax/constrained.cc (test06): New test.
 229
 230 2022-04-15  Patrick Palka  <ppalka@redhat.com>
 231
 232         * include/std/charconv (__from_chars_alnum_to_val_table): Define.
 233         (__from_chars_alnum_to_val): Define.
 234         (__from_chars_binary): Rename to ...
 235         (__from_chars_pow2_base): ... this.  Generalize to handle any
 236         power-of-two base using __from_chars_alnum_to_val.
 237         (__from_chars_digit): Optimize digit recognition to a single
 238         test instead of two tests.  Use [[__unlikely___]] attribute.
 239         (__from_chars_alpha_to_num): Remove.
 240         (__from_chars_alnum): Use __from_chars_alnum_to_val.  Use a
 241         nested loop for the overflow case.  Maintain a lower bound
 242         on the number of available bits in the result and use it to
 243         omit the overflow check.
 244         (from_chars): Adjust appropriately.
 245         * src/c++17/floating_from_chars.cc (ascii_to_hexit): Remove.
 246         (__floating_from_chars_hex): Use __from_chars_alnum_to_val
 247         to recognize a hex digit instead.
 248
 249 2022-04-14  Palmer Dabbelt  <palmer@rivosinc.com>
 250
 251         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Force auto to mutex
 252         for RISC-V.
 253         * configure: Regenerate.
 254
 255 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 256
 257         * doc/xml/manual/intro.xml: Fix comment.
 258
 259 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 260
 261         * include/precompiled/stdc++.h: Include <stacktrace> and
 262         <stdatomic.h> for C++23.
 263
 264 2022-04-14  Jonathan Wakely  <jwakely@redhat.com>
 265
 266         PR libstdc++/105269
 267         * include/bits/stl_vector.h (__cpp_lib_constexpr_vector):
 268         Define.
 269         * include/c_compatibility/stdatomic.h (__cpp_lib_stdatomic_h):
 270         Define.
 271         * include/std/optional (__cpp_lib_optional): Define new value
 272         for C++23.
 273         (__cpp_lib_monadic_optional): Remove.
 274         * include/std/version (__cpp_lib_constexpr_vector): Define.
 275         (__cpp_lib_stdatomic_h): Define.
 276         (__cpp_lib_optional): Define new value for C++23.
 277         (__cpp_lib_monadic_optional): Remove.
 278         * testsuite/20_util/optional/monadic/and_then.cc: Adjust.
 279         * testsuite/20_util/optional/requirements.cc: Adjust for C++23.
 280         * testsuite/20_util/optional/version.cc: Likewise.
 281         * testsuite/23_containers/vector/cons/constexpr.cc: Check
 282         feature test macro.
 283         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc:
 284         Likewise.
 285         * testsuite/20_util/optional/monadic/version.cc: Removed.
 286         * testsuite/23_containers/vector/requirements/version.cc: New test.
 287         * testsuite/29_atomics/headers/stdatomic.h/version.cc: New test.
 288
 289 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 290
 291         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): Check for mmap.
 292         * config.h.in: Regenerate.
 293         * configure: Regenerate.
 294
 295 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 296
 297         * include/std/stacktrace (basic_stacktrace::current): Reallocate
 298         a smaller container if the unused capacity is larger than the
 299         used size.
 300
 301 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 302
 303         * include/std/stacktrace (basic_stacktrace): Use _Impl::_M_clone
 304         or _Impl::_M_assign to initialize elements in allocated storage.
 305         (basic_stacktrace::_M_clear()): Use _Impl::_M_resize instead of
 306         _Impl::_M_destroy.
 307         (basic_stacktrace::_Impl::_M_destroy()): Replace with ...
 308         (basic_stacktrace::_Impl::_M_resize(size_type, allocator&)): New
 309         function.
 310         (basic_stacktrace::_Impl::_M_push_back): Use _M_xclone. Construct
 311         new element using allocator.
 312         (basic_stacktrace::_Impl::_M_clone): New function.
 313         (basic_stacktrace::_Impl::_M_xclone): New function.
 314         (basic_stacktrace::_Impl::_M_assign): New function.
 315
 316 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
 319         Use nothrow new instead of try block for std::allocator.
 320         (basic_stacktrace::_Impl::_M_deallocate): Use delete for
 321         std::allocator.
 322
 323 2022-04-12  Jonathan Wakely  <jwakely@redhat.com>
 324
 325         * include/std/stacktrace (basic_stacktrace::current): Replace
 326         calls to _M_reserve and _S_curr_cb with call to _M_prepare.
 327         Check return value of backtrace_simple when max depth given.
 328         (basic_stacktrace::_M_reserve): Remove.
 329         (basic_stacktrace::_S_curr_cb): Remove.
 330         (basic_stacktrace::_M_prepare(size_type)): New function to
 331         reserve initial capacity and return callback.
 332         (basic_stacktrace::_Impl::_M_allocate): Remove check for 0 < n
 333         and remove redundant zeroing of _M_frames and _M_capacity.
 334         (basic_stacktrace::_Impl::_M_push_back): Add [[unlikely]]
 335         attribute. Assign _Impl instead of swapping.
 336         * testsuite/19_diagnostics/stacktrace/current.cc: New test.
 337
 338 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 339
 340         * include/std/stacktrace (basic_stacktrace::_Impl::_M_allocate):
 341         Change [[unlikely]] attribute to [[likely]].
 342
 343 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 344
 345         PR libstdc++/105031
 346         * include/std/stacktrace (basic_stacktrace::basic_stacktrace):
 347         Fix allocator usage in constructors.
 348         (basic_stacktrace::operator=(const basic_stacktrace&)): Do not
 349         try to reallocate using const allocator.
 350         (basic_stacktrace::operator=(basic_stacktrace&&)): Fix
 351         if-constexpr with non-constant condition. Do not allocate new
 352         storage if allocator propagates. Do not set _M_size if
 353         allocation fails.
 354         (basic_stacktrace::swap(basic_stacktrace&)): Fix typo. Add
 355         assertion that non-propagating allocators are equal.
 356         * testsuite/19_diagnostics/stacktrace/stacktrace.cc: New test.
 357
 358 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 359
 360         * include/std/stacktrace (basic_stacktrace::current): Duplicate
 361         implementation into each overload. Add noinline attribute and
 362         skip current frame.
 363         (basic_stacktrace::max_size()): Call _Impl::_S_max_size.
 364         (basic_stacktrace::_S_curr_cb()): New function defining lambda.
 365         (basic_stacktrace::_Impl::_S_max_size): New function defining
 366         maximum size in terms of allocator and size_type.
 367         (basic_stacktrace::_Impl::_M_allocate): Check against
 368         max_size().
 369         * testsuite/19_diagnostics/stacktrace/entry.cc: Call function
 370         for non-constexpr checks. Check line number is correct.
 371
 372 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 373
 374         * testsuite/20_util/stacktrace/entry.cc: Moved to...
 375         * testsuite/19_diagnostics/stacktrace/entry.cc: ...here.
 376         * testsuite/20_util/stacktrace/synopsis.cc: Moved to...
 377         * testsuite/19_diagnostics/stacktrace/synopsis.cc: ...here.
 378         * testsuite/20_util/stacktrace/version.cc: Moved to...
 379         * testsuite/19_diagnostics/stacktrace/version.cc: ...here.
 380
 381 2022-04-11  Jonathan Wakely  <jwakely@redhat.com>
 382
 383         * include/experimental/bits/fs_path.h (path): Define special
 384         members after path::_Cmpt is complete.
 385
 386 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 387
 388         PR libstdc++/105153
 389         * include/std/expected
 390         (expected<void,E>::expected(expected<U,G>&&)): Fix constraints.
 391         * testsuite/20_util/expected/cons.cc: Check constructor.
 392
 393 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 394
 395         PR libstdc++/105154
 396         * include/std/expected (expected<void, E>::swap): Set
 397         _M_has_value to false for objects that previously had a value.
 398         * testsuite/20_util/expected/swap.cc: Fix test to check void
 399         specialization.
 400
 401 2022-04-08  Jonathan Wakely  <jwakely@redhat.com>
 402
 403         PR libstdc++/105146
 404         * include/std/expected (bad_expected_access): Move constructor
 405         parameter.
 406         * testsuite/20_util/expected/bad.cc: New test.
 407
 408 2022-04-07  Hans-Peter Nilsson  <hp@axis.com>
 409
 410         * testsuite/20_util/expected/requirements.cc: Correct minimal-size
 411         test.
 412
 413 2022-04-02  Jakub Jelinek  <jakub@redhat.com>
 414
 415         PR libstdc++/105128
 416         * include/std/source_location (std::source_location::__impl): Move
 417         definition before using __builtin_ret_type.
 418
 419 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
 420
 421         * include/std/utility (unreachable): Define for C++23.
 422         * include/std/version (__cpp_lib_unreachable): Define.
 423         * src/c++11/debug.cc (__glibcxx_assert_fail): Check for valid
 424         arguments. Handle only the function being given.
 425         * testsuite/20_util/unreachable/1.cc: New test.
 426         * testsuite/20_util/unreachable/version.cc: New test.
 427
 428 2022-04-01  Jonathan Wakely  <jwakely@redhat.com>
 429
 430         * include/experimental/bits/fs_fwd.h (copy_file): Remove
 431         incorrect noexcept from declaration.
 432         * include/experimental/bits/fs_path.h (path::begin, path::end):
 433         Add noexcept to declarations, to match definitions.
 434
 435 2022-04-01  Timm Bäder  <tbaeder@redhat.com>
 436
 437         * include/bits/fs_ops.h: Fix filename in Doxygen comment.
 438         * include/experimental/bits/fs_ops.h: Likewise.
 439
 440 2022-03-31  Jonathan Wakely  <jwakely@redhat.com>
 441
 442         * libsupc++/new_opa.cc (aligned_alloc): Add comment.
 443
 444 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
 445
 446         * testsuite/18_support/exception/38732.cc: Disable for C++23.
 447         * testsuite/18_support/headers/exception/synopsis.cc: Likewise.
 448         * testsuite/18_support/unexpected_handler.cc: Likewise.
 449
 450 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
 451
 452         * libsupc++/compare (_Strong_order) [!__cpp_using_enum]: Add
 453         static data members for _Fp_fmt enumerators.
 454
 455 2022-03-29  Jonathan Wakely  <jwakely@redhat.com>
 456
 457         * include/std/version (__cpp_lib_variant): Fix conditions to
 458         match <variant>.
 459         (__cpp_lib_expected): Fix condition to match <expected>.
 460
 461 2022-03-28  Jonathan Wakely  <jwakely@redhat.com>
 462
 463         * testsuite/20_util/optional/monadic/and_then.cc: Fix typo.
 464         * testsuite/20_util/optional/monadic/transform.cc: Likewise.
 465         * testsuite/22_locale/codecvt/always_noconv/char/1.cc: Likewise.
 466         * testsuite/22_locale/codecvt/encoding/char/1.cc: Likewise.
 467         * testsuite/22_locale/codecvt/in/char/1.cc: Likewise.
 468         * testsuite/22_locale/codecvt/max_length/char/1.cc: Likewise.
 469         * testsuite/22_locale/codecvt/out/char/1.cc: Likewise.
 470         * testsuite/22_locale/codecvt/unshift/char/1.cc: Likewise.
 471
 472 2022-03-27  Jonathan Wakely  <jwakely@redhat.com>
 473
 474         * doc/doxygen/user.cfg.in: Add new header.
 475         * include/Makefile.am: Likewise.
 476         * include/Makefile.in: Regenerate.
 477         * include/precompiled/stdc++.h: Add new header.
 478         * include/std/version (__cpp_lib_expected): Define.
 479         * libsupc++/exception [__cplusplus > 202002] (unexpected)
 480         (unexpected_handler, set_unexpected): Do not declare for C++23.
 481         * include/std/expected: New file.
 482         * testsuite/20_util/expected/assign.cc: New test.
 483         * testsuite/20_util/expected/cons.cc: New test.
 484         * testsuite/20_util/expected/illformed_neg.cc: New test.
 485         * testsuite/20_util/expected/observers.cc: New test.
 486         * testsuite/20_util/expected/requirements.cc: New test.
 487         * testsuite/20_util/expected/swap.cc: New test.
 488         * testsuite/20_util/expected/synopsis.cc: New test.
 489         * testsuite/20_util/expected/unexpected.cc: New test.
 490         * testsuite/20_util/expected/version.cc: New test.
 491
 492 2022-03-25  Jonathan Wakely  <jwakely@redhat.com>
 493
 494         * include/std/bit (bit_cast, byteswap, endian): Add doxygen
 495         comments.
 496
 497 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
 498
 499         PR libstdc++/105027
 500         * include/std/bit (bit_cast): Add constraints.
 501         * testsuite/26_numerics/bit/bit.cast/105027.cc: New test.
 502
 503 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
 504
 505         * include/std/version [!_GLIBCXX_HOSTED]
 506         (__cpp_lib_hardware_interference_size): Define for freestanding.
 507         (__cpp_lib_bit_cast): Likewise.
 508         (__cpp_lib_is_layout_compatible): Likewise.
 509         (__cpp_lib_is_pointer_interconvertible): Likewise.
 510         (__cpp_lib_adaptor_iterator_pair_constructor): Do not define for
 511         freestanding.
 512         (__cpp_lib_invoke_r): Likewise.
 513         (__cpp_lib_ios_noreplace): Likewise.
 514         (__cpp_lib_monadic_optional): Likewise.
 515         (__cpp_lib_move_only_function): Likewise.
 516         (__cpp_lib_spanstream): Likewise.
 517         (__cpp_lib_stacktrace): Likewise.
 518         (__cpp_lib_string_contains): Likewise.
 519         (__cpp_lib_string_resize_and_overwrite): Likewise.
 520         (__cpp_lib_to_underlying): Likewise.
 521
 522 2022-03-23  Jonathan Wakely  <jwakely@redhat.com>
 523
 524         PR libstdc++/105021
 525         * include/bits/atomic_base.h [!_GLIBCXX_HOSTED]: Do not include
 526         <bits/atomic_wait.h> for freestanding.
 527
 528 2022-03-22  Hans-Peter Nilsson  <hp@axis.com>
 529
 530         * testsuite/20_util/from_chars/6.cc (test01) [FE_DOWNWARD]:
 531         Conditionalize call to fesetround.
 532
 533 2022-03-21  Jakub Jelinek  <jakub@redhat.com>
 534
 535         PR libstdc++/104990
 536         * include/bits/locale_facets_nonio.tcc (get): Don't check if do_get
 537         isn't overloaded if __clang__ is defined.
 538
 539 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
 540
 541         PR libstdc++/104242
 542         * include/std/any (any(T&&)): Revert change to constraints.
 543         * testsuite/20_util/any/cons/104242.cc: New test.
 544
 545 2022-03-18  Jonathan Wakely  <jwakely@redhat.com>
 546
 547         PR libstdc++/92546
 548         * include/pstl/glue_algorithm_defs.h: Replace <functional> with
 549         <bits/stl_pair.h>.
 550         * include/pstl/utils.h: Replace <iterator> with <type_traits>.
 551         (__pstl::__internal::__except_handler): Use std::__terminate
 552         instead of std::terminate.
 553         * src/c++17/fs_path.cc: Include <array>.
 554         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Include
 555         <functional>.
 556         * testsuite/25_algorithms/binary_search/constexpr.cc: Likewise.
 557         * testsuite/25_algorithms/clamp/constrained.cc: Likewise.
 558         * testsuite/25_algorithms/equal/constrained.cc: Likewise.
 559         * testsuite/25_algorithms/for_each/constrained.cc: Likewise.
 560         * testsuite/25_algorithms/includes/constrained.cc: Likewise.
 561         * testsuite/25_algorithms/is_heap/constexpr.cc: Likewise.
 562         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Likewise.
 563         * testsuite/25_algorithms/is_permutation/constrained.cc: Include
 564         <iterator>.
 565         * testsuite/25_algorithms/is_sorted/constexpr.cc: Include
 566         <functional>.
 567         * testsuite/25_algorithms/is_sorted_until/constexpr.cc:
 568         Likewise.
 569         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc:
 570         Likewise.
 571         * testsuite/25_algorithms/lexicographical_compare/constrained.cc:
 572         Likewise.
 573         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc:
 574         Include <array>.
 575         * testsuite/25_algorithms/lower_bound/constexpr.cc: Include
 576         <functional>.
 577         * testsuite/25_algorithms/max/constrained.cc: Likewise.
 578         * testsuite/25_algorithms/max_element/constrained.cc: Likewise.
 579         * testsuite/25_algorithms/min/constrained.cc: Likewise.
 580         * testsuite/25_algorithms/min_element/constrained.cc: Likewise.
 581         * testsuite/25_algorithms/minmax_element/constrained.cc:
 582         Likewise.
 583         * testsuite/25_algorithms/mismatch/constexpr.cc: Likewise.
 584         * testsuite/25_algorithms/move/93872.cc: Likewise.
 585         * testsuite/25_algorithms/move_backward/93872.cc: Include
 586         <iterator>.
 587         * testsuite/25_algorithms/nth_element/constexpr.cc: Include
 588         <functional>.
 589         * testsuite/25_algorithms/partial_sort/constexpr.cc: Likewise.
 590         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc:
 591         Likewise.
 592         * testsuite/25_algorithms/search/constexpr.cc: Likewise.
 593         * testsuite/25_algorithms/search_n/constrained.cc: Likewise.
 594         * testsuite/25_algorithms/set_difference/constexpr.cc: Likewise.
 595         * testsuite/25_algorithms/set_difference/constrained.cc:
 596         Likewise.
 597         * testsuite/25_algorithms/set_intersection/constexpr.cc:
 598         Likewise.
 599         * testsuite/25_algorithms/set_intersection/constrained.cc:
 600         Likewise.
 601         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc:
 602         Likewise.
 603         * testsuite/25_algorithms/set_union/constexpr.cc: Likewise.
 604         * testsuite/25_algorithms/set_union/constrained.cc: Likewise.
 605         * testsuite/25_algorithms/sort/constexpr.cc: Likewise.
 606         * testsuite/25_algorithms/sort_heap/constexpr.cc: Likewise.
 607         * testsuite/25_algorithms/transform/constrained.cc: Likewise.
 608         * testsuite/25_algorithms/unique/constexpr.cc: Likewise.
 609         * testsuite/25_algorithms/unique/constrained.cc: Likewise.
 610         * testsuite/25_algorithms/unique_copy/constexpr.cc: Likewise.
 611         * testsuite/25_algorithms/upper_bound/constexpr.cc: Likewise.
 612         * testsuite/std/ranges/adaptors/elements.cc: Include <vector>.
 613         * testsuite/std/ranges/adaptors/lazy_split.cc: Likewise.
 614         * testsuite/std/ranges/adaptors/split.cc: Likewise.
 615
 616 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
 617
 618         PR libstdc++/92546
 619         * include/bits/fs_path.h (path::make_preferred): Use
 620         handwritten loop instead of std::replace.
 621
 622 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
 623
 624         PR middle-end/104966
 625         * include/bits/locale_facets_nonio.tcc
 626         (__moneypunct_cache::_M_cache): Replace try-catch with RAII and
 627         make all string copies before any stores to *this.
 628
 629 2022-03-17  Jonathan Wakely  <jwakely@redhat.com>
 630
 631         * testsuite/util/testsuite_character.h: Fix comment.
 632
 633 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
 634
 635         PR libstdc++/103407
 636         * config/abi/pre/gnu.ver: Make version for std::from_chars
 637         depend on HAVE_USELOCALE macro.
 638         * testsuite/util/testsuite_abi.cc (compare_symbols): Treat
 639         std::from_chars for floating-point types as undesignated if
 640         not found in the baseline symbols file.
 641
 642 2022-03-16  Jonathan Wakely  <jwakely@redhat.com>
 643
 644         * include/std/charconv (__cpp_lib_to_chars): Only define when
 645         both from_chars and to_chars are supported for floating-point
 646         types.
 647         (from_chars, to_chars): Adjust preprocessor conditions guarding
 648         declarations.
 649         * include/std/version (__cpp_lib_to_chars): Adjust condition to
 650         match <charconv> definition.
 651         * src/c++17/floating_from_chars.cc (from_chars_strtod): New
 652         function template.
 653         (from_chars): Simplify preprocessor checks and use
 654         from_chars_strtod when appropriate.
 655
 656 2022-03-14  Jonathan Wakely  <jwakely@redhat.com>
 657
 658         PR libstdc++/104875
 659         * src/c++11/codecvt.cc (read_utf8_code_point): Use char32_t to
 660         hold octets that will be left-shifted.
 661
 662 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
 663
 664         PR libstdc++/104870
 665         * src/c++17/floating_from_chars.cc: Check __SIZE_WIDTH__ >= 32
 666         before using fast_float.
 667
 668 2022-03-10  Detlef Vollmann  <dv@vollmann.ch>
 669
 670         PR libstdc++/104866
 671         * include/bits/this_thread_sleep.h: Fix order of #endif and
 672         closing brace of namespace.
 673
 674 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
 675
 676         * libsupc++/compare (_Strong_order::_S_fp_cmp) [__vax__]:
 677         Handle NaN.
 678
 679 2022-03-10  Jonathan Wakely  <jwakely@redhat.com>
 680
 681         * libsupc++/compare (_Strong_ordering::_S_fp_cmp) [__vax__]: Use
 682         <=> comparison.
 683
 684 2022-03-09  Patrick Palka  <ppalka@redhat.com>
 685
 686         PR libstdc++/104859
 687         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
 688         Be explicit when narrowing the shifted effective_mantissa,
 689         since it may have an integer-class type.
 690
 691 2022-03-08  Jonathan Wakely  <jwakely@redhat.com>
 692
 693         * include/bits/uses_allocator_args.h: Remove incorrect copyright
 694         notice.
 695
 696 2022-03-07  Jonathan Wakely  <jwakely@redhat.com>
 697
 698         PR libstdc++/104807
 699         * include/bits/c++config (__terminate, __glibcxx_assert_fail):
 700         Replace _GLIBCXX_VISIBILITY on function with visibility pragma.
 701         (__is_constant_evaluated): Add visibility pragma.
 702
 703 2022-03-07  Rasmus Villemoes  <rasmus.villemoes@prevas.dk>
 704
 705         * config/locale/vxworks/ctype_members.cc: Remove <iostream>
 706           include.
 707
 708 2022-03-05  Jonathan Wakely  <jwakely@redhat.com>
 709
 710         * include/bits/c++config (__glibcxx_assert_fail): Add visibility
 711         attribute.
 712         (__terminate): Likewise.
 713
 714 2022-03-04  Jonathan Wakely  <jwakely@redhat.com>
 715
 716         * libsupc++/compare (strong_order::_S_fp_cmp): Move typedef
 717         inside #if condition.
 718
 719 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
 720
 721         PR libstdc++/104748
 722         * testsuite/std/ranges/adaptors/all.cc: Use non-debug vector for
 723         constexpr test.
 724
 725 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
 726
 727         * testsuite/17_intro/names.cc (func): Undef on AIX.
 728
 729 2022-03-03  Jonathan Wakely  <jwakely@redhat.com>
 730
 731         PR libstdc++/96526
 732         * libsupc++/compare (strong_order): Add missing support for
 733         floating-point types.
 734         * testsuite/18_support/comparisons/algorithms/strong_order_floats.cc:
 735         New test.
 736
 737 2022-03-01  Jonathan Wakely  <jwakely@redhat.com>
 738
 739         PR middle-end/103984
 740         * include/bits/regex_compiler.h (_BracketMatcher::_M_char): Use
 741         default member initializer.
 742
 743 2022-02-24  Jonathan Wakely  <jwakely@redhat.com>
 744
 745         PR libstdc++/104602
 746         * include/std/source_location (source_location::current): Use
 747         deduced type of __builtin_source_location().
 748
 749 2022-02-22  Patrick Palka  <ppalka@redhat.com>
 750
 751         * include/bits/ranges_base.h (__detail::__is_initializer_list):
 752         Define.
 753         (viewable_range): Adjust as per P2415R2.
 754         * include/bits/ranges_cmp.h (__cpp_lib_ranges): Adjust value.
 755         * include/std/ranges (owning_view): Define as per P2415R2.
 756         (enable_borrowed_range<owning_view>): Likewise.
 757         (views::__detail::__can_subrange): Replace with ...
 758         (views::__detail::__can_owning_view): ... this.
 759         (views::_All::_S_noexcept): Sync with operator().
 760         (views::_All::operator()): Use owning_view instead of subrange
 761         as per P2415R2.
 762         * include/std/version (__cpp_lib_ranges): Adjust value.
 763         * testsuite/std/ranges/adaptors/all.cc (test06): Adjust now that
 764         views::all uses owning_view instead of subrange.
 765         (test08): New test.
 766         * testsuite/std/ranges/adaptors/lazy_split.cc (test09): Adjust
 767         now that rvalue non-view non-borrowed ranges are viewable.
 768         * testsuite/std/ranges/adaptors/split.cc (test06): Likewise.
 769
 770 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
 771
 772         PR libstdc++/104559
 773         * doc/xml/manual/evolution.xml: Document deprecation.
 774         * doc/html/manual/api.html: Regenerate.
 775         * include/bits/stl_bvector.h (insert(const_iterator, const bool&)):
 776         Remove default argument.
 777         (insert(const_iterator)): New overload with deprecated attribute.
 778         * testsuite/23_containers/vector/bool/modifiers/insert/104559.cc:
 779         New test.
 780
 781 2022-02-17  Jonathan Wakely  <jwakely@redhat.com>
 782
 783         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Replace
 784         code that call cat->name() on std::error_category objects.
 785         Identify known categories by symbol name and use a hardcoded
 786         name. Print error code values as enumerators where appopriate.
 787         * testsuite/libstdc++-prettyprinters/cxx11.cc: Adjust expected
 788         name of custom category. Check io_errc and future_errc errors.
 789
 790 2022-02-15  Jonathan Wakely  <jwakely@redhat.com>
 791
 792         PR libstdc++/104542
 793         * include/bits/uses_allocator_args.h (make_obj_using_allocator)
 794         (uninitialized_construct_using_allocator): Add constexpr.
 795         * testsuite/20_util/uses_allocator/make_obj.cc: Check constexpr.
 796         * testsuite/20_util/uses_allocator/uninitialized_construct.cc: New test.
 797
 798 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
 799
 800         PR libstdc++/100912
 801         * config/locale/gnu/c_locale.h (__convert_from_v): Use inline
 802         namespace for IEEE128 long double mode.
 803         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Add new symbol
 804         version and export __gnu_cxx_ieee128::__convert_from_v.
 805         * include/bits/locale_facets_nonio.tcc (money_put::__do_put):
 806         Make __ibm128 overload use snprintf directly
 807         * testsuite/util/testsuite_abi.cc: Add new symbol version.
 808         Remove stable IEEE128/LDBL versions.
 809
 810 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
 811
 812         PR libstdc++/103891
 813         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
 814         Remove.
 815         * include/std/variant: Check feature test macros instead.
 816         * include/std/version: Likewise.
 817
 818 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
 819
 820         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
 821         Fix typo.
 822
 823 2022-02-14  Jonathan Wakely  <jwakely@redhat.com>
 824
 825         * src/c++17/floating_to_chars.cc (FLOAT128_TO_CHARS): Depend on
 826         LONG_DOUBLE_ALT128_COMPAT instead of USE_FLOAT128.
 827
 828 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
 829
 830         * testsuite/20_util/temporary_buffer.cc: Fix dg-warning target
 831         selector.
 832
 833 2022-02-11  Jonathan Wakely  <jwakely@redhat.com>
 834
 835         * testsuite/20_util/monotonic_buffer_resource/allocate.cc:
 836         Ignore -Walloc-larger-than warning.
 837         * testsuite/20_util/unsynchronized_pool_resource/allocate.cc:
 838         Likewise.
 839         * testsuite/29_atomics/atomic/cons/user_pod.cc: Compile with -O1
 840         to avoid linker error for __atomic_is_lock_free.
 841
 842 2022-02-10  Thomas Rodgers  <rodgert@appliantology.com>
 843
 844         * include/bits/atomic_wait.h (__waiter_base::_S_do_spin,
 845         __waiter_base::_S_do_spin_v): Change memory order from relaxed
 846         to acquire.
 847
 848 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
 849
 850         * include/c_compatibility/stdatomic.h (atomic_fetch_xor): Add
 851         using-declaration.
 852         (atomic_fetch_xor_explicit): Likewise.
 853         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Check
 854         arithmetic and logical operations for atomic_int.
 855
 856 2022-02-10  Jonathan Wakely  <jwakely@redhat.com>
 857
 858         * src/filesystem/dir-common.h (_GLIBCXX_HAVE_DIRFD): Undefine
 859         when <dirent.h> is not available.
 860         (_GLIBCXX_HAVE_UNLINKAT):  Likewise.
 861
 862 2022-02-09  Thomas Rodgers  <rodgert@appliantology.com>
 863
 864         PR libstdc++/104442
 865         * include/bits/atomic_wait.h (__waiter::_M_do_wait_v): Move spin
 866          loop inside do loop so that threads failing the wait, reload
 867          _M_ver.
 868
 869 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
 870
 871         * src/c++17/fs_dir.cc (_Dir(DIR*, const path&)): Change first
 872         parameter to _Dir_base&&.
 873         * src/filesystem/dir-common.h (_Dir_base(DIR*)): Remove.
 874         * src/filesystem/dir.cc (_Dir(DIR*, const path&)): Change first
 875         parameter to _Dir_base&&.
 876
 877 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
 878
 879         * acinclude.m4 (GLIBCXX_ENABLE_LOCK_POLICY): Add comment about
 880         checking for CAS on correct word size.
 881
 882 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
 883
 884         * testsuite/experimental/filesystem/operations/create_directories.cc:
 885         Adjust expected results for Windows.
 886
 887 2022-02-08  Jonathan Wakely  <jwakely@redhat.com>
 888
 889         PR libstdc++/104161
 890         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::__erase):
 891         [i_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Refresh entry._M_type member,
 892         instead of checking for errno values indicating a directory.
 893         * src/c++17/fs_ops.cc (fs::remove_all(const path&)): Use similar
 894         logic to non-throwing overload.
 895         (fs::remove_all(const path&, error_code&)): Add comments.
 896         * src/filesystem/ops-common.h: Likewise.
 897
 898 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
 899
 900         * src/filesystem/dir-common.h (_Dir_base::openat): Change return
 901         type to use portable posix::DIR alias.
 902
 903 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
 904
 905         * include/c_compatibility/stdatomic.h [__clang__]: Use
 906         #include_next <stdatomic.h>.
 907
 908 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
 909
 910         * include/experimental/bits/fs_ops.h (fs::copy_file): Remove
 911         noexcept.
 912         (fs::create_directories): Likewise.
 913         (fs::remove_all): Likewise.
 914         * src/filesystem/ops.cc (fs::copy_file): Remove noexcept.
 915         (fs::create_directories): Likewise.
 916         (fs::remove_all): Likewise.
 917
 918 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
 919
 920         PR libstdc++/104161
 921         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for dirfd
 922         and unlinkat.
 923         * config.h.in: Regenerate.
 924         * configure: Regenerate.
 925         * include/bits/fs_dir.h (recursive_directory_iterator): Declare
 926         remove_all overloads as friends.
 927         (recursive_directory_iterator::__erase): Declare new member
 928         function.
 929         * include/bits/fs_fwd.h (remove, remove_all): Declare.
 930         * src/c++17/fs_dir.cc (_Dir): Add filename_only parameter to
 931         constructor. Pass file descriptor argument to base constructor.
 932         (_Dir::dir_and_pathname, _Dir::open_subdir, _Dir::do_unlink)
 933         (_Dir::unlink, _Dir::rmdir): Define new member functions.
 934         (directory_iterator): Pass filename_only argument to _Dir
 935         constructor.
 936         (recursive_directory_iterator::_Dir_stack): Adjust constructor
 937         parameters to take a _Dir rvalue instead of creating one.
 938         (_Dir_stack::orig): Add data member for storing original path.
 939         (_Dir_stack::report_error): Define new member function.
 940         (__directory_iterator_nofollow): Move here from dir-common.h and
 941         fix value to be a power of two.
 942         (__directory_iterator_filename_only): Define new constant.
 943         (recursive_directory_iterator): Construct _Dir object and move
 944         into _M_dirs stack. Pass skip_permission_denied argument to first
 945         advance call.
 946         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
 947         (recursive_directory_iterator::__erase): Define new member
 948         function.
 949         * src/c++17/fs_ops.cc (ErrorReporter, do_remove_all): Remove.
 950         (fs::remove_all): Use new recursive_directory_iterator::__erase
 951         member function.
 952         * src/filesystem/dir-common.h (_Dir_base): Add int parameter to
 953         constructor and use openat to implement nofollow semantics.
 954         (_Dir_base::fdcwd, _Dir_base::set_close_on_exec, _Dir_base::openat):
 955         Define new member functions.
 956         (__directory_iterator_nofollow): Move to fs_dir.cc.
 957         * src/filesystem/dir.cc (_Dir): Pass file descriptor argument to
 958         base constructor.
 959         (_Dir::dir_and_pathname, _Dir::open_subdir): Define new member
 960         functions.
 961         (recursive_directory_iterator::_Dir_stack): Adjust constructor
 962         parameters to take a _Dir rvalue instead of creating one.
 963         (recursive_directory_iterator): Check for new nofollow option.
 964         Construct _Dir object and move into _M_dirs stack. Pass
 965         skip_permission_denied argument to first advance call.
 966         (recursive_directory_iterator::increment): Use _Dir::open_subdir.
 967         * src/filesystem/ops.cc (fs::remove_all): Use C++17 remove_all.
 968
 969 2022-02-04  Jonathan Wakely  <jwakely@redhat.com>
 970
 971         * include/bits/allocator.h: Qualify std::allocator_traits in
 972         deprecated warnings.
 973         * libsupc++/exception (uncaught_exception): Add suggestion to
 974         deprecated warning.
 975
 976 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         * src/c++17/fs_dir.cc (fs::recursive_directory_iterator::pop):
 979         Add [[maybe_unused]] attribute.
 980         * src/filesystem/dir.cc (fs::recursive_directory_iterator::pop):
 981         Likewise.
 982
 983 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
 984
 985         * testsuite/23_containers/multiset/operators/cmp_c++20.cc: Use
 986         custom comparison function for multiset.
 987         * testsuite/23_containers/set/operators/cmp_c++20.cc: Use custom
 988         comparison function for set.
 989
 990 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
 991
 992         * include/bits/boost_concept_check.h (_OutputIteratorConcept):
 993         Change member function to data member of function pointer type.
 994
 995 2022-02-02  Martin Sebor  <msebor@redhat.com>
 996
 997         PR libstdc++/101831
 998         * include/std/array (begin): Declare const member function attribute
 999         const.
1000         (end, rbegin, rend, size, max_size, empty, data): Same.
1001         * testsuite/23_containers/array/capacity/empty.cc: Add test cases.
1002         * testsuite/23_containers/array/capacity/max_size.cc: Same.
1003         * testsuite/23_containers/array/capacity/size.cc: Same.
1004         * testsuite/23_containers/array/iterators/begin_end.cc: New test.
1005
1006 2022-02-02  Jonathan Wakely  <jwakely@redhat.com>
1007
1008         * testsuite/27_io/filesystem/iterators/error_reporting.cc: Use
1009         autoconf macro to check whether d_type is present.
1010         * testsuite/experimental/filesystem/iterators/error_reporting.cc:
1011         Likewise.
1012
1013 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1014
1015         * testsuite/27_io/filesystem/iterators/97731.cc: New test.
1016         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
1017         Check follow_directory_symlink option.
1018         * testsuite/experimental/filesystem/iterators/recursive_directory_iterator.cc:
1019         Likewise.
1020
1021 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1022
1023         * src/c++17/fs_dir.cc (recursive_directory_iterator::increment):
1024         Reset state to past-the-end iterator on error.
1025         (fs::recursive_directory_iterator::pop(error_code&)): Likewise.
1026         (fs::recursive_directory_iterator::pop()): Check _M_dirs before
1027         it might get reset.
1028         * src/filesystem/dir.cc (recursive_directory_iterator): Likewise,
1029         for the TS implementation.
1030         * testsuite/27_io/filesystem/iterators/error_reporting.cc: New test.
1031         * testsuite/experimental/filesystem/iterators/error_reporting.cc: New test.
1032
1033 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1034
1035         * include/bits/fs_fwd.h (filesystem::perms): Fix comment.
1036
1037 2022-02-01  Jonathan Wakely  <jwakely@redhat.com>
1038
1039         PR libstdc++/104301
1040         * acinclude.m4 (GLIBCXX_ENABLE_CSTDIO): Print different messages
1041         for stdio_pure and stdio_posix options.
1042         * configure: Regenerate.
1043
1044 2022-02-01  Thomas Rodgers  <rodgert@appliantology.com>
1045
1046         * include/bits/atomic_wait.h: Change memory order from
1047         Acquire/Release with relaxed loads to SeqCst+Release for
1048         accesses to the waiter's count.
1049
1050 2022-01-31  Martin Liska  <mliska@suse.cz>
1051
1052         * acinclude.m4: Detect *_ld_is_mold and use it.
1053         * configure: Regenerate.
1054
1055 2022-01-30  Hans-Peter Nilsson  <hp@axis.com>
1056
1057         * testsuite/27_io/basic_istream/get/char/lwg3464.cc: Don't run on
1058         simulator targets.
1059         * testsuite/27_io/basic_istream/get/wchar_t/lwg3464.cc: Likewise.
1060
1061 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
1062
1063         PR libstdc++/100516
1064         * include/bits/deque.tcc (_M_range_initialize<ForwardIterator>):
1065         Add __builtin_unreachable to loop.
1066         * testsuite/23_containers/deque/100516.cc: New test.
1067
1068 2022-01-27  Jonathan Wakely  <jwakely@redhat.com>
1069
1070         * include/bits/ranges_base.h (ranges::advance): Avoid signed
1071         overflow. Do nothing if already equal to desired result.
1072         * testsuite/24_iterators/range_operations/advance_overflow.cc:
1073         New test.
1074
1075 2022-01-27  Martin Liska  <mliska@suse.cz>
1076
1077         PR libstdc++/104259
1078         * acinclude.m4: Fix typo.
1079         * configure: Regenerate.
1080
1081 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1082
1083         PR libstdc++/104019
1084         * include/bits/istream.tcc (basic_istream::sentry): Add braces
1085         around try-block.
1086         * include/bits/shared_ptr_base.h (_Sp_counted_array_base::_M_init):
1087         Add pragmas to disable bogus warnings from PR 61596.
1088
1089 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1090
1091         PR libstdc++/104217
1092         * src/c++17/fs_ops.cc (_GNU_SOURCE): Define.
1093         * src/filesystem/dir.cc (_GNU_SOURCE): Define.
1094         * src/filesystem/ops.cc (_GNU_SOURCE): Define.
1095
1096 2022-01-25  Jonathan Wakely  <jwakely@redhat.com>
1097
1098         PR libstdc++/104161
1099         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for
1100         fdopendir.
1101         * config.h.in: Regenerate.
1102         * configure: Regenerate.
1103         * src/c++17/fs_dir.cc (_Dir): Add nofollow flag to constructor
1104         and pass it to base class constructor.
1105         (directory_iterator): Pass nofollow flag to _Dir constructor.
1106         (fs::recursive_directory_iterator::increment): Likewise.
1107         * src/c++17/fs_ops.cc (do_remove_all): Use nofollow option for
1108         directory_iterator constructor. Move error check outside loop.
1109         * src/filesystem/dir-common.h (_Dir_base): Add nofollow flag to
1110         constructor and when it's set use ::open with O_NOFOLLOW and
1111         O_DIRECTORY.
1112         * src/filesystem/dir.cc (_Dir): Add nofollow flag to constructor
1113         and pass it to base class constructor.
1114         (directory_iterator): Pass nofollow flag to _Dir constructor.
1115         (fs::recursive_directory_iterator::increment): Likewise.
1116         * src/filesystem/ops.cc (remove_all): Use nofollow option for
1117         directory_iterator constructor. Move error check outside loop.
1118
1119 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1120
1121         PR libstdc++/104032
1122         * include/std/spanstream (basic_spanbuf(basic_spanbuf&&)): Use
1123         mem-initializer for _M_buf.
1124         (basic_spanbuf::Operator=(basic_spanbuf&&)): Fix ill-formed
1125         member access.
1126         * testsuite/27_io/spanstream/2.cc: New test.
1127
1128 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1129
1130         * src/c++17/floating_from_chars.cc (USE_STRTOD_FOR_FROM_CHARS):
1131         Define macro for case where std::from_chars is implemented in
1132         terms of strtod, strtof or strtold.
1133         (buffer_resource, valid_fmt, find_end_of_float, pattern)
1134         (from_chars_impl, make_result, reserve_string): Do not define
1135         unless USE_STRTOD_FOR_FROM_CHARS is defined.
1136         (from_chars): Define when at least one of USE_LIB_FAST_FLOAT and
1137         USE_STRTOD_FOR_FROM_CHARS is defined, instead of
1138         _GLIBCXX_HAVE_USELOCALE. Use fast_float for long double when it
1139         is binary64.
1140
1141 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1142
1143         PR libstdc++/104174
1144         * include/bits/hashtable_policy.h (_Map_base): Add partial
1145         specialization for maps with const key types.
1146         * testsuite/23_containers/unordered_map/104174.cc: New test.
1147
1148 2022-01-23  Jonathan Wakely  <jwakely@redhat.com>
1149
1150         PR libstdc++/104019
1151         * include/bits/shared_ptr_base.h (_Sp_counted_base<>::_M_release):
1152         Set members to zero without type punning.
1153
1154 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1155
1156         * testsuite/20_util/shared_ptr/cons/array.cc: Fix comment.
1157
1158 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1159
1160         PR libstdc++/87193
1161         PR libstdc++/104019
1162         * include/bits/alloc_traits.h (__cpp_lib_allocator_traits_is_always_equal):
1163         Define as type long.
1164         * include/bits/allocator.h (__cpp_lib_incomplete_container_elements):
1165         Likewise.
1166         * include/bits/basic_string.h (__cpp_lib_string_udls): Likewise.
1167         * include/bits/chrono.h (__cpp_lib_chrono): Likewise.
1168         (__cpp_lib_chrono_udls): Likewise.
1169         * include/bits/move.h (__cpp_lib_addressof_constexpr): Likewise.
1170         * include/bits/node_handle.h (__cpp_lib_node_extract): Likewise.
1171         * include/bits/range_access.h (__cpp_lib_nonmember_container_access):
1172         Likewise.
1173         * include/bits/shared_ptr.h (__cpp_lib_enable_shared_from_this):
1174         Likewise.
1175         * include/bits/stl_algo.h (__cpp_lib_clamp): Likewise.
1176         (__cpp_lib_sample): Likewise.
1177         * include/bits/stl_algobase.h (__cpp_lib_robust_nonmodifying_seq_ops):
1178         Likewise.
1179         * include/bits/stl_function.h (__cpp_lib_transparent_operators):
1180         Likewise.
1181         * include/bits/stl_iterator.h (__cpp_lib_make_reverse_iterator):
1182         Likewise.
1183         * include/bits/stl_map.h (__cpp_lib_map_try_emplace):
1184         Likewise.
1185         * include/bits/stl_tree.h (__cpp_lib_generic_associative_lookup):
1186         Likewise.
1187         * include/bits/unique_ptr.h (__cpp_lib_make_unique):
1188         Likewise.
1189         * include/bits/unordered_map.h (__cpp_lib_unordered_map_try_emplace):
1190         Likewise.
1191         * include/c_global/cmath (__cpp_lib_hypot): Likewise.
1192         * include/c_global/cstddef (__cpp_lib_byte): Likewise.
1193         * include/std/atomic (__cpp_lib_atomic_is_always_lock_free):
1194         Likewise.
1195         * include/std/complex (__cpp_lib_complex_udls): Likewise.
1196         * include/std/filesystem (__cpp_lib_filesystem): Likewise.
1197         * include/std/functional (__cpp_lib_not_fn): Likewise.
1198         (__cpp_lib_boyer_moore_searcher): Likewise.
1199         * include/std/iomanip (__cpp_lib_quoted_string_io): Likewise.
1200         * include/std/mutex (__cpp_lib_scoped_lock): Likewise.
1201         * include/std/numeric (__cpp_lib_gcd_lcm): Likewise.
1202         (__cpp_lib_gcd, __cpp_lib_lcm): Likewise.
1203         * include/std/tuple (__cpp_lib_apply): Likewise.
1204         (__cpp_lib_make_from_tuple): Likewise.
1205         * include/std/type_traits (__cpp_lib_integral_constant_callable)
1206         (__cpp_lib_bool_constant, __cpp_lib_logical_traits)
1207         (__cpp_lib_is_null_pointer, __cpp_lib_transformation_trait_aliases)
1208         (__cpp_lib_result_of_sfinae, __cpp_lib_void_t)
1209         (__cpp_lib_is_swappable, __cpp_lib_is_invocable)
1210         (__cpp_lib_has_unique_object_representations)
1211         (__cpp_lib_is_aggregate): Likewise.
1212         * include/std/version: Likewise.
1213         * libsupc++/new (__cpp_lib_launder): Likewise.
1214
1215 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1216
1217         * include/std/version (__cpp_lib_shared_ptr_arrays): Fix
1218         condition for C++17 definition.
1219
1220 2022-01-21  Jonathan Wakely  <jwakely@redhat.com>
1221
1222         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count):
1223         Add constexpr.
1224         (_Sp_atomic::_M_ptr): Add default member-initializer.
1225         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc:
1226         Check constant initialization.
1227         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: Likewise.
1228
1229 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
1230
1231         * src/c++11/cxx11-ios_failure.cc (__constinit): Define as
1232         equivalent attribute for Clang.
1233         * src/c++11/future.cc (__constinit): Likewise.
1234         * src/c++11/system_error.cc (__constinit): Likewise.
1235         * src/c++17/memory_resource.cc (__constinit): Likewise.
1236
1237 2022-01-20  Jonathan Wakely  <jwakely@redhat.com>
1238
1239         * scripts/testsuite_flags.in: Only add src/filesystem/.libs and
1240         src/libbacktrace/.libs to LDFLAGS if those directories exist.
1241
1242 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1243
1244         * configure.ac (GLIBCXX_ENABLE_DEBUG_FLAGS): Remove -gdwarf-4
1245         from default flags.
1246         * configure: Regenerate.
1247
1248 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1249
1250         PR libstdc++/104123
1251         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: Include
1252         <stddef.h>.
1253
1254 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1255
1256         * scripts/testsuite_flags.in: Add src/libbacktrace/.libs to
1257         linker search paths.
1258         * src/Makefile.am: Fix src/debug/libbacktrace build.
1259         * src/Makefile.in: Regenerate.
1260         * src/libbacktrace/Makefile.am: Use per-library CPPFLAGS
1261         variable. Use symlinks for the source files.
1262         * src/libbacktrace/Makefile.in: Regenerate.
1263
1264 2022-01-19  Matthias Kretz  <m.kretz@gsi.de>
1265
1266         * include/experimental/bits/simd.h (__floating_point_flags): Do
1267         not rely on math_errhandling to expand to a constant expression.
1268
1269 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1270
1271         * doc/xml/manual/evolution.xml: Document deprecations.
1272         * doc/xml/manual/status_cxx2017.xml: Update status.
1273         * doc/html/*: Regenerate.
1274
1275 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1276
1277         * include/bits/stl_tempbuf.h (get_temporary_buffer): Change
1278         _GLIBCXX14_DEPRECATED to _GLIBCXX17_DEPRECATED.
1279
1280 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1281
1282         * include/bits/stl_pair.h (_PCC::_DeprConsPair): Remove unused
1283         function.
1284
1285 2022-01-19  Jonathan Wakely  <jwakely@redhat.com>
1286
1287         PR libstdc++/104101
1288         * include/bits/shared_ptr_atomic.h (_Sp_atomic::_Atomic_count::lock):
1289         Only use __thread_relax if __cpp_lib_atomic_wait is defined.
1290
1291 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1292
1293         PR libstdc++/104099
1294         * include/bits/basic_string.h (basic_string(nullptr_t)): Only
1295         define for C++23.
1296         (operator=(nullptr_t)): Likewise.
1297         * include/bits/cow_string.h: Likewise.
1298         * include/std/string_view (basic_string_view(nullptr_t)):
1299         Likewise.
1300         * testsuite/21_strings/basic_string/cons/char/nullptr.cc: Adjust
1301         expected error. Add examples that become ill-formed in C++23.
1302         * testsuite/21_strings/basic_string_view/cons/char/nonnull.cc:
1303         Adjust expected errors.
1304         * testsuite/21_strings/basic_string_view/cons/wchar_t/nonnull.cc:
1305         Likewise.
1306
1307 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1308
1309         PR libstdc++/104098
1310         * include/bits/stl_iterator.h (reverse_iterator): Check
1311         __cpp_lib_concepts instead of __cplusplus.
1312
1313 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1314
1315         PR libstdc++/101124
1316         * include/bits/stl_pair.h (pair): Adjust constraints on
1317         deprecated constructors accepting literal zero as null pointer
1318         constant. Improve wording of deprecated attribute.
1319         * testsuite/20_util/pair/cons/99957.cc: Check that deprecated
1320         constructors do not cause ambiguities for copyable types.
1321
1322 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1323
1324         * include/bits/stl_function.h (ptr_fun): Fix suggestion for
1325         non-deprecated alternative.
1326
1327 2022-01-18  Tom Honermann  <tom@honermann.net>
1328
1329         * acinclude.m4: Define config macros if uchar.h provides
1330         c8rtomb() and mbrtoc8().
1331         * config.h.in: Regenerate.
1332         * configure: Regenerate.
1333         * include/c_compatibility/uchar.h (c8rtomb, mbrtoc8): Define.
1334         * include/c_global/cuchar (c8rtomb, mbrtoc8): Likewise.
1335         * include/c_std/cuchar (c8rtomb, mbrtoc8): Likewise.
1336         * testsuite/21_strings/headers/cuchar/functions_std_cxx20.cc:
1337         New test.
1338         * testsuite/21_strings/headers/cuchar/functions_std_fchar8_t.cc:
1339         New test.
1340
1341 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1342
1343         * include/Makefile.am: Install new header.
1344         * include/Makefile.in: Regenerate.
1345         * include/c_compatibility/stdatomic.h: New file.
1346         * testsuite/29_atomics/headers/stdatomic.h/c_compat.cc: New test.
1347
1348 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1349
1350         PR libstdc++/104080
1351         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1352         * src/c++17/fast_float/fast_float.h (FASTFLOAT_IS_BIG_ENDIAN):
1353         Define in terms of __BYTE_ORDER__.
1354
1355 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1356
1357         PR libstdc++/104080
1358         * src/c++17/fast_float/LOCAL_PATCHES: UPDATE.
1359         * src/c++17/fast_float/fast_float.h (round): Use explicit
1360         template argument list for std::min.
1361
1362 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1363
1364         * doc/xml/manual/status_cxx2017.xml: Update C++17 status.
1365         * doc/xml/manual/status_cxx2020.xml: Use 12.1 instead of 12 for
1366         upcoming release.
1367         * doc/html/manual/status.html: Regenerate.
1368
1369 2022-01-18  Jonathan Wakely  <jwakely@redhat.com>
1370
1371         * acinclude.m4 (GLIBCXX_ENABLE_FULLY_DYNAMIC_STRING): Improve
1372         comments.
1373         * configure: Regenerate.
1374
1375 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1376
1377         * src/c++17/floating_from_chars.cc: (USE_LIB_FAST_FLOAT):
1378         Conditionally define, and use it to conditionally include
1379         fast_float.
1380         (from_chars): Use fast_float for float and double when
1381         USE_LIB_FAST_FLOAT.
1382
1383 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1384
1385         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1386         * src/c++17/fast_float/fast_float.h (from_chars_advanced): In
1387         case of over/underflow, return errc::result_out_of_range and don't
1388         modify 'value'.
1389
1390 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1391
1392         * src/c++17/fast_float/LOCAL_PATCHES: Update.
1393         * src/c++17/fast_float/fast_float.h: Apply local modifications.
1394
1395 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1396
1397         * src/c++17/fast_float/LOCAL_PATCHES: New file.
1398         * src/c++17/fast_float/MERGE: New file.
1399         * src/c++17/fast_float/README.md: New file, copied from the
1400         fast_float repository.
1401         * src/c++17/fast_float/fast_float.h: New file, an amalgamation
1402         of the fast_float library.
1403
1404 2022-01-17  Patrick Palka  <ppalka@redhat.com>
1405
1406         * src/c++17/floating_from_chars.cc: Include <bit>.
1407         (ascii_to_hexit, starts_with_ci): Conditionally define.
1408         (__floating_from_chars_hex):  Conditionally define.
1409         (from_chars): Use __floating_from_chars_hex for
1410         chars_format::hex parsing of binary32/64 float/double.
1411         (testsuite/20_util/from_chars/7.cc): New test.
1412         * testsuite/20_util/from_chars/7.cc: New file.
1413
1414 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1415
1416         * acinclude.m4 (GLIBCXX_ENABLE_BACKTRACE): New macro.
1417         * configure.ac: Use GLIBCXX_ENABLE_BACKTRACE.
1418         * include/Makefile.am: Add new header.
1419         * include/Makefile.in: Regenerate.
1420         * include/std/stacktrace: New header.
1421         * include/std/version (__cpp_lib_stacktrace): Define.
1422         * Makefile.in: Regenerate.
1423         * config.h.in: Regenerate.
1424         * configure: Regenerate.
1425         * doc/Makefile.in: Regenerate.
1426         * libsupc++/Makefile.in: Regenerate.
1427         * po/Makefile.in: Regenerate.
1428         * python/Makefile.in: Regenerate.
1429         * src/Makefile.am: Regenerate.
1430         * src/Makefile.in: Regenerate.
1431         * src/c++11/Makefile.in: Regenerate.
1432         * src/c++17/Makefile.in: Regenerate.
1433         * src/c++20/Makefile.in: Regenerate.
1434         * src/c++98/Makefile.in: Regenerate.
1435         * src/filesystem/Makefile.in: Regenerate.
1436         * testsuite/Makefile.in: Regenerate.
1437         * src/libbacktrace/Makefile.am: New file.
1438         * src/libbacktrace/Makefile.in: New file.
1439         * src/libbacktrace/backtrace-rename.h: New file.
1440         * src/libbacktrace/backtrace-supported.h.in: New file.
1441         * src/libbacktrace/config.h.in: New file.
1442         * testsuite/lib/libstdc++.exp (check_effective_target_stacktrace):
1443         New proc.
1444         * testsuite/20_util/stacktrace/entry.cc: New test.
1445         * testsuite/20_util/stacktrace/synopsis.cc: New test.
1446         * testsuite/20_util/stacktrace/version.cc: New test.
1447
1448 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1449
1450         * doc/xml/manual/status_cxx2020.xml: Use final C++20 option
1451         names.
1452         * doc/html/manual/status.html: Regenerate.
1453
1454 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1455
1456         PR libstdc++/103650
1457         * include/Makefile.am: Rename LT_OBJDIR and STDC_HEADERS.
1458         * include/Makefile.in: Regenerate.
1459         * testsuite/17_intro/headers/c++1998/103650.cc: New test.
1460
1461 2022-01-17  Matthias Kretz  <m.kretz@gsi.de>
1462
1463         * include/experimental/bits/simd.h (__floating_point_flags): Do
1464         not rely on the presence of the math_errhandling macro.
1465
1466 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1467
1468         * include/bits/shared_ptr_atomic.h (_Sp_atomic): Add typename
1469         to qualified-id for dependent type.
1470
1471 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1472
1473         * doc/xml/manual/status_cxx2020.xml: Update.
1474         * doc/html/manual/status.html: Regenerate.
1475
1476 2022-01-17  Jonathan Wakely  <jwakely@redhat.com>
1477             Thomas Rodgers  <trodgers@redhat.com>
1478
1479         * include/bits/shared_ptr_atomic.h (__cpp_lib_atomic_shared_ptr):
1480         New macro.
1481         (_Sp_atomic): New class template.
1482         (atomic<shared_ptr<T>>, atomic<weak_ptr<T>>): New partial
1483         specializations.
1484         * include/bits/shared_ptr_base.h (__shared_count, __weak_count)
1485         (__shared_ptr, __weak_ptr): Declare _Sp_atomic as a friend.
1486         * include/std/version (__cpp_lib_atomic_shared_ptr): New macro.
1487         * testsuite/20_util/shared_ptr/atomic/atomic_shared_ptr.cc: New
1488         test.
1489         * testsuite/20_util/weak_ptr/atomic_weak_ptr.cc: New test.
1490
1491 2022-01-15  Matthias Kretz  <m.kretz@gsi.de>
1492
1493         * include/experimental/bits/simd.h: Move feature detection bools
1494         and add __have_avx512bitalg, __have_avx512vbmi2,
1495         __have_avx512vbmi, __have_avx512ifma, __have_avx512cd,
1496         __have_avx512vnni, __have_avx512vpopcntdq.
1497         (__detail::__machine_flags): New function which returns a unique
1498         uint64 depending on relevant -m and -f flags.
1499         (__detail::__odr_helper): New type alias for either an anonymous
1500         type or a type specialized with the __machine_flags number.
1501         (_SimdIntOperators): Change template parameters from _Impl to
1502         _Tp, _Abi because _Impl now has an __odr_helper parameter which
1503         may be _OdrEnforcer from the anonymous namespace, which makes
1504         for a bad base class.
1505         (many): Either add __odr_helper template parameter or mark as
1506         always_inline.
1507         * include/experimental/bits/simd_detail.h: Add defines for
1508         AVX512BITALG, AVX512VBMI2, AVX512VBMI, AVX512IFMA, AVX512CD,
1509         AVX512VNNI, AVX512VPOPCNTDQ, and AVX512VP2INTERSECT.
1510         * include/experimental/bits/simd_builtin.h: Add __odr_helper
1511         template parameter or mark as always_inline.
1512         * include/experimental/bits/simd_fixed_size.h: Ditto.
1513         * include/experimental/bits/simd_math.h: Ditto.
1514         * include/experimental/bits/simd_scalar.h: Ditto.
1515         * include/experimental/bits/simd_neon.h: Add __odr_helper
1516         template parameter.
1517         * include/experimental/bits/simd_ppc.h: Ditto.
1518         * include/experimental/bits/simd_x86.h: Ditto.
1519
1520 2022-01-14  Uroš Bizjak  <ubizjak@gmail.com>
1521
1522         * testsuite/22_locale/numpunct/members/char/3.cc:
1523         Require pt_PT locale instead of nl_NL.
1524         (test02): Use pt_PT locale instead of nl_NL.
1525
1526 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
1527
1528         PR libstdc++/91260
1529         PR libstdc++/91383
1530         PR libstdc++/95065
1531         * include/backward/binders.h (bind1st, bind2nd): Add deprecated
1532         attribute.
1533         * include/bits/refwrap.h (_Maybe_unary_or_binary_function):
1534         Disable deprecated warnings for base classes.
1535         (_Reference_wrapper_base): Likewise.
1536         * include/bits/shared_ptr_base.h (_Sp_owner_less): Likewise.
1537         * include/bits/stl_bvector.h (_Bit_iterator_base): Likewise.
1538         * include/bits/stl_function.h (unary_function, binary_function):
1539         Add deprecated attribute.
1540         (unary_negate, not1, binary_negate, not2, ptr_fun)
1541         (pointer_to_unary_function, pointer_to_binary_function)
1542         (mem_fun_t, const_mem_fun_t, mem_fun_ref_t, const_mem_fun_ref_t)
1543         (mem_fun1_t, const_mem_fun1_t, mem_fun_ref1_t)
1544         (const_mem_fun1_ref_t, mem_fun, mem_fun_ref): Add deprecated
1545         attributes.
1546         * include/bits/stl_iterator.h: Disable deprecated warnings for
1547         std::iterator base classes.
1548         * include/bits/stl_iterator_base_types.h (iterator): Add
1549         deprecated attribute.
1550         * include/bits/stl_map.h (map::value_compare): Disable
1551         deprecated warnings for base class.
1552         * include/bits/stl_multimap.h (multimap::value_compare):
1553         Likewise.
1554         * include/bits/stl_raw_storage_iter.h (raw_storage_iterator):
1555         Add deprecated attribute.
1556         * include/bits/stl_tempbuf.h (get_temporary_buffer): Likewise.
1557         * include/bits/stream_iterator.h: Disable deprecated warnings.
1558         * include/bits/streambuf_iterator.h: Likewise.
1559         * include/ext/bitmap_allocator.h: Remove unary_function base
1560         classes.
1561         * include/ext/functional: Disable deprecated warnings.
1562         * include/ext/rope: Likewise.
1563         * include/ext/throw_allocator.h: Likewise.
1564         * include/std/type_traits (result_of): Add deprecated attribute.
1565         * include/tr1/functional: Disable deprecated warnings.
1566         * include/tr1/functional_hash.h: Likewise.
1567         * testsuite/20_util/function_objects/binders/1.cc: Add
1568         -Wno-disable-deprecations.
1569         * testsuite/20_util/function_objects/binders/3113.cc: Likewise.
1570         * testsuite/20_util/function_objects/constexpr.cc: Add
1571         dg-warning.
1572         * testsuite/20_util/raw_storage_iterator/base.cc: Likewise.
1573         * testsuite/20_util/raw_storage_iterator/dr2127.cc: Likewise.
1574         * testsuite/20_util/raw_storage_iterator/requirements/base_classes.cc:
1575         Likewise.
1576         * testsuite/20_util/raw_storage_iterator/requirements/explicit_instantiation/1.cc:
1577         Likewise.
1578         * testsuite/20_util/raw_storage_iterator/requirements/typedefs.cc:
1579         Likewise.
1580         * testsuite/20_util/reference_wrapper/24803.cc:
1581         Likewise.
1582         * testsuite/20_util/reference_wrapper/typedefs.cc: Enable for
1583         C++20 and check for absence of nested types.
1584         * testsuite/20_util/shared_ptr/comparison/less.cc: Remove
1585         std::binary_function base class.
1586         * testsuite/20_util/temporary_buffer.cc: Add dg-warning.
1587         * testsuite/21_strings/basic_string/cons/char/69092.cc: Remove
1588         std::iterator base class.
1589         * testsuite/24_iterators/back_insert_iterator/requirements/base_classes.cc:
1590         Likewise.
1591         * testsuite/24_iterators/front_insert_iterator/requirements/base_classes.cc:
1592         Likewise.
1593         * testsuite/24_iterators/insert_iterator/requirements/base_classes.cc:
1594         Likewise.
1595         * testsuite/24_iterators/istream_iterator/requirements/base_classes.cc:
1596         Likewise.
1597         * testsuite/24_iterators/istreambuf_iterator/92285.cc:
1598         Likewise.
1599         * testsuite/24_iterators/istreambuf_iterator/requirements/base_classes.cc:
1600         Likewise.
1601         * testsuite/24_iterators/ostream_iterator/requirements/base_classes.cc:
1602         Likewise.
1603         * testsuite/24_iterators/ostreambuf_iterator/requirements/base_classes.cc:
1604         Likewise.
1605         * testsuite/24_iterators/reverse_iterator/requirements/base_classes.cc:
1606         Likewise.
1607         * testsuite/25_algorithms/copy/34595.cc:
1608         Likewise.
1609         * testsuite/25_algorithms/minmax/3.cc: Remove std::binary_function
1610         base class.
1611         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/2.cc:
1612         Disable deprecated warnings.
1613         * testsuite/25_algorithms/all_of/requirements/explicit_instantiation/pod.cc:
1614         Likewise.
1615         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/2.cc:
1616         Likewise.
1617         * testsuite/25_algorithms/any_of/requirements/explicit_instantiation/pod.cc:
1618         Likewise.
1619         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/2.cc:
1620         Likewise.
1621         * testsuite/25_algorithms/copy_if/requirements/explicit_instantiation/pod.cc:
1622         Likewise.
1623         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/2.cc:
1624         Likewise.
1625         * testsuite/25_algorithms/count_if/requirements/explicit_instantiation/pod.cc:
1626         Likewise.
1627         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/2.cc:
1628         Likewise.
1629         * testsuite/25_algorithms/find_end/requirements/explicit_instantiation/pod.cc:
1630         Likewise.
1631         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/2.cc:
1632         Likewise.
1633         * testsuite/25_algorithms/find_first_of/requirements/explicit_instantiation/pod.cc:
1634         Likewise.
1635         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/2.cc:
1636         Likewise.
1637         * testsuite/25_algorithms/find_if/requirements/explicit_instantiation/pod.cc:
1638         Likewise.
1639         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/2.cc:
1640         Likewise.
1641         * testsuite/25_algorithms/find_if_not/requirements/explicit_instantiation/pod.cc:
1642         Likewise.
1643         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/2.cc:
1644         Likewise.
1645         * testsuite/25_algorithms/for_each/requirements/explicit_instantiation/pod.cc:
1646         Likewise.
1647         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/2.cc:
1648         Likewise.
1649         * testsuite/25_algorithms/is_partitioned/requirements/explicit_instantiation/pod.cc:
1650         Likewise.
1651         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/2.cc:
1652         Likewise.
1653         * testsuite/25_algorithms/is_permutation/requirements/explicit_instantiation/pod.cc:
1654         Likewise.
1655         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/2.cc:
1656         Likewise.
1657         * testsuite/25_algorithms/none_of/requirements/explicit_instantiation/pod.cc:
1658         Likewise.
1659         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/2.cc:
1660         Likewise.
1661         * testsuite/25_algorithms/partition/requirements/explicit_instantiation/pod.cc:
1662         Likewise.
1663         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/2.cc:
1664         Likewise.
1665         * testsuite/25_algorithms/partition_copy/requirements/explicit_instantiation/pod.cc:
1666         Likewise.
1667         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/2.cc:
1668         Likewise.
1669         * testsuite/25_algorithms/partition_point/requirements/explicit_instantiation/pod.cc:
1670         Likewise.
1671         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/2.cc:
1672         Likewise.
1673         * testsuite/25_algorithms/random_shuffle/requirements/explicit_instantiation/pod.cc:
1674         Likewise.
1675         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/2.cc:
1676         Likewise.
1677         * testsuite/25_algorithms/remove_copy_if/requirements/explicit_instantiation/pod.cc:
1678         Likewise.
1679         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/2.cc:
1680         Likewise.
1681         * testsuite/25_algorithms/remove_if/requirements/explicit_instantiation/pod.cc:
1682         Likewise.
1683         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/2.cc:
1684         Likewise.
1685         * testsuite/25_algorithms/replace_copy_if/requirements/explicit_instantiation/pod.cc:
1686         Likewise.
1687         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/2.cc:
1688         Likewise.
1689         * testsuite/25_algorithms/replace_if/requirements/explicit_instantiation/pod.cc:
1690         Likewise.
1691         * testsuite/25_algorithms/search/requirements/explicit_instantiation/2.cc:
1692         Likewise.
1693         * testsuite/25_algorithms/search/requirements/explicit_instantiation/pod.cc:
1694         Likewise.
1695         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/2.cc:
1696         Likewise.
1697         * testsuite/25_algorithms/search_n/requirements/explicit_instantiation/pod.cc:
1698         Likewise.
1699         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/2.cc:
1700         Likewise.
1701         * testsuite/25_algorithms/stable_partition/requirements/explicit_instantiation/pod.cc:
1702         Likewise.
1703         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/2.cc:
1704         Likewise.
1705         * testsuite/25_algorithms/transform/requirements/explicit_instantiation/pod.cc:
1706         Likewise.
1707         * testsuite/27_io/basic_filebuf/underflow/wchar_t/9178.cc: Add
1708         dg-warning.
1709         * testsuite/ext/pb_ds/example/priority_queue_erase_if.cc:
1710         Likewise.
1711         * testsuite/ext/pb_ds/example/priority_queue_split_join.cc:
1712         Likewise.
1713         * testsuite/tr1/3_function_objects/reference_wrapper/typedefs.cc:
1714         Disable deprecated warnings.
1715         * testsuite/tr1/6_containers/hash/requirements/base_classes.cc:
1716         Likewise.
1717         * testsuite/util/regression/trait/erase_if_fn.hpp: Remove
1718         std::unary_function base classes.
1719         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper):
1720         Remove std::iterator base classes.
1721
1722 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
1723
1724         * include/bits/shared_ptr.h (__cpp_lib_shared_ptr_weak_type):
1725         Correct type of macro value.
1726         (shared_ptr): Add additional friend declarations.
1727         (make_shared, allocate_shared): Constrain existing overloads and
1728         remove static_assert.
1729         * include/bits/shared_ptr_base.h (__cpp_lib_smart_ptr_for_overwrite):
1730         New macro.
1731         (_Sp_counted_ptr_inplace<T, Alloc, Lp>): New partial
1732         specialization for use with make_shared_for_overwrite.
1733         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
1734         (_Sp_counted_array_base): New class template.
1735         (_Sp_counted_array): New class template.
1736         (__shared_count(_Tp*&, const _Sp_counted_array_base&, _Init)):
1737         New constructor for allocating shared arrays.
1738         (__shared_ptr(const _Sp_counted_array_base&, _Init)): Likewise.
1739         * include/std/version (__cpp_lib_shared_ptr_weak_type): Correct
1740         type.
1741         (__cpp_lib_shared_ptr_arrays): Update value for C++20.
1742         (__cpp_lib_smart_ptr_for_overwrite): New macro.
1743         * testsuite/20_util/shared_ptr/creation/99006.cc: Adjust
1744         expected errors.
1745         * testsuite/20_util/shared_ptr/creation/array.cc: New test.
1746         * testsuite/20_util/shared_ptr/creation/overwrite.cc: New test.
1747         * testsuite/20_util/shared_ptr/creation/version.cc: New test.
1748         * testsuite/20_util/unique_ptr/creation/for_overwrite.cc: Check
1749         feature test macro. Test non-trivial default-initialization.
1750
1751 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
1752
1753         * include/bits/stl_construct.h (_Construct, _Construct_novalue):
1754         Also cast away cv-qualifiers when converting pointer to void.
1755         * testsuite/20_util/allocator/void.cc: Test construct function
1756         with cv-qualified types.
1757
1758 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
1759
1760         PR libstdc++/103992
1761         * include/bits/stl_iterator.h (common_iterator): Use
1762         std::construct_at instead of placement new.
1763         * testsuite/24_iterators/common_iterator/1.cc: Check copy
1764         construction is usable in constant expressions.
1765
1766 2022-01-14  Jonathan Wakely  <jwakely@redhat.com>
1767
1768         * doc/xml/manual/status_cxx2011.xml: Document new tokens
1769         accepted by std::random_device constructor.
1770         * doc/html/manual/status.html: Regenerate.
1771
1772 2022-01-12  Patrick Palka  <ppalka@redhat.com>
1773
1774         * testsuite/20_util/to_chars/103955.cc: Add explicit dg-do
1775         directive.
1776
1777 2022-01-12  Patrick Palka  <ppalka@redhat.com>
1778
1779         PR libstdc++/103955
1780         * src/c++17/floating_to_chars.cc (__floating_to_chars_hex):
1781         Track the excess precision separately from the effective
1782         precision.  Avoid overflow in bounds check by splitting it into
1783         two checks.
1784         (__floating_to_chars_precision): Avoid overflow in bounds checks
1785         similarly.
1786         * testsuite/20_util/to_chars/103955.cc: New test.
1787
1788 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1789
1790         PR libstdc++/103726
1791         * include/Makefile.am: Install <source_location> for
1792         freestanding.
1793         * include/Makefile.in: Regenerate.
1794         * include/std/version (__cpp_lib_source_location): Define for
1795         freestanding.
1796
1797 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1798
1799         * include/std/ranges (ranges::lazy_split_view::_InnerIter::end()):
1800         Add neoxcept (LWG 3593).
1801
1802 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * include/std/ranges (ranges::__detail::__box): Add constexpr to
1805         assignment operators (LWG 3572).
1806         * testsuite/std/ranges/adaptors/filter.cc: Check assignment of a
1807         view that uses copyable-box.
1808
1809 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1810
1811         PR libstdc++/103726
1812         * include/Makefile.am: Install <coroutine> for freestanding.
1813         * include/Makefile.in: Regenerate.
1814         * include/std/coroutine: Adjust headers and preprocessor
1815         conditions.
1816         (__coroutine_traits_impl): Use concepts when available.
1817         [_GLIBCXX_HOSTED] (hash<coroutine_handle>): Define.
1818
1819 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1820
1821         * include/std/ostream (operator<<(basic_ostream&, charT)):
1822         Use unformatted input if no padding is needed.
1823         (operator<<(basic_ostream<char>&, char)): Likewise.
1824
1825 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1826
1827         PR libstdc++/103891
1828         * include/bits/c++config (_GLIBCXX_HAVE_COND_TRIVIAL_SPECIAL_MEMBERS):
1829         Define.
1830         * include/std/variant (__cpp_lib_variant): Only define C++20
1831         value when the compiler is known to support conditionally
1832         trivial destructors.
1833         * include/std/version (__cpp_lib_variant): Likewise.
1834
1835 2022-01-11  Jonathan Wakely  <jwakely@redhat.com>
1836
1837         * include/bits/stl_iterator.h (common_iterator): Add constexpr
1838         to all member functions (LWG 3574).
1839         * testsuite/24_iterators/common_iterator/1.cc: Evaluate some
1840         tests as constant expressions.
1841         * testsuite/24_iterators/common_iterator/2.cc: Likewise.
1842
1843 2022-01-10  Jakub Jelinek  <jakub@redhat.com>
1844
1845         PR libstdc++/77760
1846         * include/bits/locale_facets_nonio.h (__time_get_state): New struct.
1847         (time_get::_M_extract_via_format): Declare new method with
1848         __time_get_state& as an extra argument.
1849         * include/bits/locale_facets_nonio.tcc (_M_extract_via_format): Add
1850         __state argument, set various fields in it while parsing.  Handle %j,
1851         %U, %w and %W, fix up handling of %y, %Y and %C, don't adjust tm_hour
1852         for %p immediately.  Add a wrapper around the method without the
1853         __state argument for backwards compatibility.
1854         (_M_extract_num): Remove all __len == 4 special cases.
1855         (time_get::do_get_time, time_get::do_get_date, time_get::do_get): Zero
1856         initialize __state, pass it to _M_extract_via_format and finalize it
1857         at the end.
1858         (do_get_year): For 1-2 digit parsed years, map 0-68 to 2000-2068,
1859         69-99 to 1969-1999.  For 3-4 digit parsed years use that as year.
1860         (get): If do_get isn't overloaded from the locale_facets_nonio.tcc
1861         version, don't call do_get but call _M_extract_via_format instead to
1862         pass around state.
1863         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export _M_extract_via_format
1864         with extra __time_get_state and __time_get_state::_M_finalize_state.
1865         * src/c++98/locale_facets.cc (is_leap, day_of_the_week,
1866         day_of_the_year): New functions in anon namespace.
1867         (mon_yday): New var in anon namespace.
1868         (__time_get_state::_M_finalize_state): Define.
1869         * testsuite/22_locale/time_get/get/char/4.cc: New test.
1870         * testsuite/22_locale/time_get/get/wchar_t/4.cc: New test.
1871         * testsuite/22_locale/time_get/get_year/char/1.cc (test01): Parse 197
1872         as year 197AD instead of error.
1873         * testsuite/22_locale/time_get/get_year/char/5.cc (test01): Parse 1 as
1874         year 2001 instead of error.
1875         * testsuite/22_locale/time_get/get_year/char/6.cc: New test.
1876         * testsuite/22_locale/time_get/get_year/wchar_t/1.cc (test01): Parse
1877         197 as year 197AD instead of error.
1878         * testsuite/22_locale/time_get/get_year/wchar_t/5.cc (test01): Parse
1879         1 as year 2001 instead of error.
1880         * testsuite/22_locale/time_get/get_year/wchar_t/6.cc: New test.
1881
1882 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
1883
1884         PR libstdc++/103866
1885         * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do
1886         nothing for freestanding builds.
1887         (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS.
1888         * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured
1889         with --without-headers.  Do not use GCC_HEADER_STDINT for
1890         freestanding builds.
1891         * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding
1892         for freestanding builds.
1893         * configure: Regenerate.
1894         * Makefile.in: Regenerate.
1895         * doc/Makefile.in: Regenerate.
1896         * include/Makefile.in: Regenerate.
1897         * libsupc++/Makefile.in: Regenerate.
1898         * po/Makefile.in: Regenerate.
1899         * python/Makefile.in: Regenerate.
1900         * src/Makefile.in: Regenerate.
1901         * src/c++11/Makefile.in: Regenerate.
1902         * src/c++17/Makefile.in: Regenerate.
1903         * src/c++20/Makefile.in: Regenerate.
1904         * src/c++98/Makefile.in: Regenerate.
1905         * src/filesystem/Makefile.in: Regenerate.
1906         * testsuite/Makefile.in: Regenerate.
1907
1908 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
1909
1910         * testsuite/28_regex/algorithms/regex_replace/char/103664.cc:
1911         Add dg-timeout-factor directive.
1912         * testsuite/28_regex/basic_regex/84110.cc: Likewise.
1913         * testsuite/28_regex/basic_regex/ctors/char/other.cc: Likewise.
1914         * testsuite/28_regex/match_results/102667.cc: Likewise.
1915
1916 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
1917
1918         * doc/xml/manual/using.xml: Update documentation around default
1919         -std option.
1920         * doc/html/*: Regenerate.
1921
1922 2022-01-10  Jonathan Wakely  <jwakely@redhat.com>
1923
1924         PR libstdc++/100017
1925         * src/c++17/Makefile.am (AM_CXXFLAGS): Add -nostdinc++.
1926         * src/c++17/Makefile.in: Regenerate.
1927
1928 2022-01-09  Sandra Loosemore  <sandra@codesourcery.com>
1929
1930         * testsuite/18_support/type_info/constexpr.cc: Add explicit
1931         -fdelete-null-pointer-checks option.
1932
1933 2022-01-06  Pavel I. Kryukov  <pavel.kryukov@phystech.edu>
1934             Jonathan Wakely  <jwakely@redhat.com>
1935
1936         PR libstdc++/103853
1937         * include/bits/forward_list.tcc (forward_list::merge): Check for
1938         self-merge.
1939         * testsuite/23_containers/forward_list/operations/merge.cc: New test.
1940
1941 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
1942
1943         * include/bits/regex.h (basic_regex, match_results): Qualify
1944         name in friend declaration, to work around Clang bug.
1945
1946 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
1947
1948         * testsuite/ext/rope/pthread7-rope.cc: Add dg-timeout-factor.
1949
1950 2022-01-06  Jonathan Wakely  <jwakely@redhat.com>
1951
1952         PR libstdc++/103911
1953         * include/std/charconv (__from_chars_alpha_to_num): Return
1954         char instead of unsigned char. Change invalid return value to
1955         127 instead of using numeric trait.
1956         (__from_chars_alnum): Fix comment. Do not use std::isdigit.
1957         Change type of variable to char.
1958
1959 2022-01-05  François Dumont  <fdumont@gcc.gnu.org>
1960
1961         PR libstdc++/68303
1962         * include/bits/hashtable_policy.h
1963         (_Hashtable_hash_traits<_Hash>): New.
1964         (_Hash_code_base<>::_M_hash_code(const _Hash_node_value<>&)): New.
1965         (_Hashtable_base<>::_M_key_equals): New.
1966         (_Hashtable_base<>::_M_equals): Use latter.
1967         (_Hashtable_base<>::_M_key_equals_tr): New.
1968         (_Hashtable_base<>::_M_equals_tr): Use latter.
1969         * include/bits/hashtable.h
1970         (_Hashtable<>::__small_size_threshold()): New, use _Hashtable_hash_traits.
1971         (_Hashtable<>::find): Loop through elements to look for key if size is lower
1972         than __small_size_threshold().
1973         (_Hashtable<>::_M_emplace(true_type, _Args&&...)): Likewise.
1974         (_Hashtable<>::_M_insert_unique(_Kt&&, _Args&&, const _NodeGenerator&)): Likewise.
1975         (_Hashtable<>::_M_compute_hash_code(const_iterator, const key_type&)): New.
1976         (_Hashtable<>::_M_emplace(const_iterator, false_type, _Args&&...)): Use latter.
1977         (_Hashtable<>::_M_find_before_node(const key_type&)): New.
1978         (_Hashtable<>::_M_erase(true_type, const key_type&)): Use latter.
1979         (_Hashtable<>::_M_erase(false_type, const key_type&)): Likewise.
1980         * src/c++11/hashtable_c++0x.cc: Include <bits/functional_hash.h>.
1981         * testsuite/util/testsuite_performance.h
1982         (report_performance): Use 9 width to display memory.
1983         * testsuite/performance/23_containers/insert_erase/unordered_small_size.cc:
1984         New performance test case.
1985
1986 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
1987
1988         PR libstdc++/103919
1989         * include/bits/basic_string.h (basic_string(const T&, size_t, size_t)):
1990         Relax constraints on string_view parameter.
1991         * include/bits/cow_string.h (basic_string(const T&, size_t, size_t)):
1992         Likewise.
1993         * testsuite/21_strings/basic_string/cons/char/103919.cc: New test.
1994
1995 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
1996
1997         * config/abi/pre/gnu.ver (GLIBCXX_3.4.30): Export new symbol for
1998         ARM EABI.
1999         * include/bits/c++config (_GLIBCXX23_CONSTEXPR): Define.
2000         * include/std/version (__cpp_lib_constexpr_typeinfo): Define.
2001         * libsupc++/tinfo.cc: Add #error to ensure non-inline definition
2002         is emitted.
2003         (type_info::__equal): Define alias symbol.
2004         * libsupc++/typeinfo (type_info::before): Combine different
2005         implementations into one.
2006         (type_info::operator==): Likewise. Use address equality for
2007         constant evaluation. Call __equal for targets that require the
2008         definition to be non-inline.
2009         * testsuite/18_support/type_info/constexpr.cc: New test.
2010
2011 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2012
2013         * src/c++11/cxx11-ios_failure.cc (io_error_category): Define
2014         class and virtual functions as 'final'.
2015         (io_category_instance): Use constinit union to make the object
2016         immortal.
2017         * src/c++11/future.cc (future_error_category): Define class and
2018         virtual functions as 'final'.
2019         (future_category_instance): Use constinit union.
2020
2021 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2022
2023         * python/libstdcxx/v6/printers.py (StdErrorCodePrinter): Strip
2024         versioned namespace from the type name that is printed.
2025
2026 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2027
2028         * python/libstdcxx/v6/printers.py (StdRegexStatePrinter): New
2029         printer for std::regex NFA states.
2030
2031 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2032
2033         * testsuite/23_containers/forward_list/operations/1.cc: Fill in
2034         placeholders in comments.
2035         * testsuite/23_containers/forward_list/operations/2.cc:
2036         Likewise.
2037         * testsuite/23_containers/forward_list/operations/3.cc:
2038         Likewise.
2039         * testsuite/23_containers/forward_list/operations/4.cc:
2040         Likewise.
2041         * testsuite/23_containers/forward_list/operations/5.cc:
2042         Likewise.
2043         * testsuite/23_containers/forward_list/operations/6.cc:
2044         Likewise.
2045         * testsuite/23_containers/forward_list/operations/7.cc:
2046         Likewise.
2047
2048 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2049
2050         PR libstdc++/103848
2051         * include/bits/stl_deque.h (operator-): Do not use 0 as null
2052         pointer constant.
2053
2054 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2055
2056         * include/bits/alloc_traits.h (allocator_traits<allocator<void>>):
2057         Use std::_Construct for construct.
2058
2059 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2060
2061         PR libstdc++/103877
2062         * doc/xml/faq.xml: Add '-x c++' to preprocessor command.
2063         * doc/html/faq.html: Regenerate.
2064
2065 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2066
2067         * include/bits/regex.h (__regex_algo_impl): Change __policy and
2068         __match_mode template parameters to be function parameters.
2069         (regex_match, regex_search): Pass policy and match mode as
2070         function arguments.
2071         * include/bits/regex.tcc (__regex_algo_impl): Change template
2072         parameters to function parameters.
2073         * include/bits/regex_compiler.h (_RegexTranslatorBase): Use
2074         'if constexpr' for conditions using template parameters.
2075         (_RegexTranslator): Likewise.
2076         * include/bits/regex_executor.tcc (_Executor::_M_handle_accept):
2077         Likewise.
2078         * testsuite/util/testsuite_regex.h (regex_match_debug)
2079         (regex_search_debug): Move template arguments to function
2080         arguments.
2081
2082 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2083
2084         * testsuite/util/testsuite_regex.h (regex_match_debug): Compare
2085         results even if the match failed.
2086
2087 2022-01-05  Jonathan Wakely  <jwakely@redhat.com>
2088
2089         * include/bits/regex_compiler.tcc: Adjust all calls to
2090         __throw_regex_error.
2091         * include/bits/regex_error.h (__throw_regex_error): Add noreturn
2092         attribute.
2093         * include/bits/regex_scanner.tcc: Likewise.
2094         * src/c++11/regex.cc (desc): New helper function.
2095         (regex_error::regex_error(error_type)): Use desc to get a string
2096         corresponding to the error code.
2097
2098 \f
2099 Copyright (C) 2022 Free Software Foundation, Inc.
2100
2101 Copying and distribution of this file, with or without modification,
2102 are permitted in any medium without royalty provided the copyright
2103 notice and this notice are preserved.