libstdc++-v3/ChangeLog

   1 2021-03-31  Alexandre Oliva  <oliva@adacore.com>
   2
   3         * testsuite/30_threads/future/members/poll.cc: Use faster
   4         after-ready call in the calibration loop.
   5
   6 2021-03-29  Jonathan Wakely  <jwakely@redhat.com>
   7
   8         * doc/xml/manual/status_cxx2017.xml: Adjust link for PSTL.
   9         * doc/html/manual/status.html: Regenerate.
  10
  11 2021-03-28  François Dumont  <fdumont@gcc.gnu.org>
  12
  13         * include/debug/forward_list
  14         (forward_list(forward_list&&, const allocator_type&)): Add noexcept qualification.
  15         * include/debug/list (list(list&&, const allocator_type&)): Likewise and add
  16         call to safe container allocator aware move constructor.
  17         * include/debug/vector (vector(vector&&, const allocator_type&)):
  18         Fix noexcept qualification.
  19         * testsuite/23_containers/forward_list/cons/noexcept_move_construct.cc:
  20         Add allocator-extended move constructor noexceot qualification check.
  21         * testsuite/23_containers/list/cons/noexcept_move_construct.cc: Likewise.
  22
  23 2021-03-26  Jonathan Wakely  <jwakely@redhat.com>
  24
  25         * src/c++11/random.cc (USE_LCG): Define when a pseudo-random
  26         fallback is needed.
  27         [USE_LCG] (bad_seed, construct_lcg_at, destroy_lcg_at, __lcg):
  28         New helper functions and callback.
  29         (random_device::_M_init): Add 'prng' and 'all' enumerators.
  30         Replace switch with fallthrough with a series of 'if' statements.
  31         [USE_LCG]: Construct an lcg_type engine and use __lcg when cpuid
  32         checks fail.
  33         (random_device::_M_init_pretr1) [USE_MT19937]: Accept "prng"
  34         token.
  35         (random_device::_M_getval): Check for callback unconditionally
  36         and always pass _M_file pointer.
  37         * testsuite/26_numerics/random/random_device/85494.cc: Remove
  38         effective-target check. Use new random_device_available helper.
  39         * testsuite/26_numerics/random/random_device/94087.cc: Likewise.
  40         * testsuite/26_numerics/random/random_device/cons/default-cow.cc:
  41         Remove effective-target check.
  42         * testsuite/26_numerics/random/random_device/cons/default.cc:
  43         Likewise.
  44         * testsuite/26_numerics/random/random_device/cons/token.cc: Use
  45         new random_device_available helper. Test "prng" token.
  46         * testsuite/util/testsuite_random.h (random_device_available):
  47         New helper function.
  48
  49 2021-03-25  François Dumont  <fdumont@gcc.gnu.org>
  50
  51         * include/debug/string
  52         (basic_string(const basic_string&, const _Alloc&)): Define even if !_GLIBCXX_USE_CXX11_ABI.
  53         (basic_string(basic_string&&, const _Alloc&)): Likewise and add noexcept qualification.
  54         (basic_string<>::erase): Adapt to take __const_iterator.
  55         (basic_string(const _CharT*, const _Allocator&)): Remove assign call.
  56         (basic_string<>::insert(const_iterator, _InputIte, _InputIte)): Try to
  57         remove iterator debug layer even if !_GLIBCXX_USE_CXX11_ABI.
  58         [_GLIBCXX_USE_CHAR8_T] (__gnu_debug::u8string): New.
  59         (__gnu_debug::u16string, __gnu_debug::u32string): New.
  60         (std::hash<__gnu_debug::basic_string<>>): New partial specialization.
  61         (std::__is_fast_hash<__gnu_debug::basic_string<>>): Likewise.
  62         * testsuite/util/exception/safety.h
  63         (erase_base<__gnu_debug::basic_string<>>): New partial specialization.
  64         (insert_base<__gnu_debug::basic_string<>>): Likewise.
  65         * testsuite/util/testsuite_container_traits.h (traits<__gnu_debug::basic_string<>>):
  66         New partial specialization.
  67         * testsuite/21_strings/basic_string/hash/debug.cc: New test.
  68         * testsuite/21_strings/basic_string/requirements/citerators.cc:
  69         Add test on __gnu_debug::string.
  70         * testsuite/21_strings/basic_string/requirements/dr438/constructor.cc: Likewise.
  71         * testsuite/21_strings/basic_string/requirements/exception/basic.cc: Likewise.
  72         * testsuite/21_strings/basic_string/requirements/exception/generation_prohibited.cc:
  73         Likewise.
  74         * testsuite/21_strings/basic_string/requirements/exception/propagation_consistent.cc:
  75         Likewise.
  76         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char/1.cc:
  77         Likewise.
  78         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char16_t/1.cc:
  79         Likewise.
  80         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char32_t/1.cc:
  81         Likewise.
  82         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/char8_t/1.cc:
  83         Likewise.
  84         * testsuite/21_strings/basic_string/requirements/explicit_instantiation/wchar_t/1.cc:
  85         Likewise.
  86         * testsuite/21_strings/basic_string/requirements/typedefs.cc: Likewise.
  87
  88 2021-03-25  Jakub Jelinek  <jakub@redhat.com>
  89
  90         PR c++/99672
  91         * testsuite/18_support/source_location/consteval.cc (main): Adjust
  92         expected column numbers.
  93         * testsuite/18_support/source_location/1.cc (main): Likewise.
  94
  95 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
  96
  97         * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare malloc.
  98
  99 2021-03-25  Jonathan Wakely  <jwakely@redhat.com>
 100
 101         * testsuite/util/exception/safety.h (setup_base::generate):
 102         Support seeding random engine.
 103         (erase_point, erase_range): Adjust range of random numbers to
 104         ensure dereferenceable iterators are used where required.
 105         (generation_prohibited::run): Do not try to erase from empty
 106         containers.
 107         * testsuite/util/testsuite_containergen.h (test_containers):
 108         Support seeding random engine.
 109
 110 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
 111
 112         * testsuite/std/ranges/adaptors/reverse.cc: Replace duplicated
 113         line with a check that uses the const being/end overloads.
 114
 115 2021-03-23  Moritz Sichert  <sichert@in.tum.de>
 116
 117         * include/std/ranges (reverse_view::begin, reverse_view::end):
 118         Qualify make_reverse_iterator calls to avoid ADL.
 119         * testsuite/std/ranges/adaptors/reverse.cc: Test that
 120         views::reverse works when make_reverse_iterator is defined
 121         in an associated namespace.
 122
 123 2021-03-23  Jonathan Wakely  <jwakely@redhat.com>
 124
 125         * include/bits/c++config (_GLIBCXX_LONG_DOUBLE_ALT128_COMPAT):
 126         Do not define when compiling with Clang.
 127
 128 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
 129
 130         * include/std/string_view (basic_string_view(Range&&)): Define new
 131         constructor and deduction guide.
 132         * testsuite/21_strings/basic_string_view/cons/char/range_c++20.cc: New test.
 133         * testsuite/21_strings/basic_string_view/cons/wchar_t/range_c++20.cc: New test.
 134
 135 2021-03-22  Jonathan Wakely  <jwakely@redhat.com>
 136
 137         * include/bits/range_access.h (begin(T (&)[N]), end(T (&)[N])):
 138         Add missing 'noexcept' as per LWG 2280.
 139         (rbegin(T (&)[N]), rend(T (&)[N]), rbegin(initializer_list<T>))
 140         (rend(initializer_list<T>)): Add 'noexcept' as per LWG 3537.
 141         * testsuite/24_iterators/range_access/range_access.cc: Check for
 142         expected noexcept specifiers. Check result types of generic
 143         std::begin and std::end overloads.
 144         * testsuite/24_iterators/range_access/range_access_cpp14.cc:
 145         Check for expected noexcept specifiers.
 146         * testsuite/24_iterators/range_access/range_access_cpp17.cc:
 147         Likewise.
 148
 149 2021-03-19  Jonathan Wakely  <jwakely@redhat.com>
 150
 151         * include/std/type_traits (is_scoped_enum): Define.
 152         * include/std/version (__cpp_lib_is_scoped_enum): Define.
 153         * testsuite/20_util/is_scoped_enum/value.cc: New test.
 154         * testsuite/20_util/is_scoped_enum/version.cc: New test.
 155
 156 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
 157
 158         PR libstdc++/99341
 159         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Remove
 160         std::once_flag symbols.
 161         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Likewise.
 162         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Likewise.
 163         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt:
 164         Likewise.
 165         * config/abi/pre/gnu.ver: Likewise.
 166         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
 167         (struct __once_flag_compat): Remove.
 168         (_ZNSt9once_flag11_M_activateEv): Remove.
 169         (_ZNSt9once_flag9_M_finishEb): Remove.
 170
 171 2021-03-16  Jonathan Wakely  <jwakely@redhat.com>
 172
 173         PR libstdc++/99341
 174         * include/std/mutex [_GLIBCXX_HAVE_LINUX_FUTEX] (once_flag):
 175         Revert to pthread_once_t implementation.
 176         [_GLIBCXX_HAVE_LINUX_FUTEX] (call_once): Likewise.
 177         * src/c++11/mutex.cc [_GLIBCXX_HAVE_LINUX_FUTEX]
 178         (struct __once_flag_compat): New type matching the reverted
 179         implementation of once_flag using futexes.
 180         (once_flag::_M_activate): Remove, replace with ...
 181         (_ZNSt9once_flag11_M_activateEv): ... alias symbol.
 182         (once_flag::_M_finish): Remove, replace with ...
 183         (_ZNSt9once_flag9_M_finishEb): ... alias symbol.
 184         * testsuite/30_threads/call_once/66146.cc: Removed.
 185
 186 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 187
 188         * testsuite/17_intro/names.cc: Exclude j from the list
 189         of test symbols for Darwin.
 190
 191 2021-03-15  Iain Sandoe  <iain@sandoe.co.uk>
 192
 193         * config/os/bsd/darwin/ppc-extra.ver: Add matching for
 194         to_chars and from_chars for long double.
 195
 196 2021-03-15  Patrick Palka  <ppalka@redhat.com>
 197
 198         * include/bits/max_size_type.h (__max_size_type::operator _Tp):
 199         Fix formatting.
 200         (__max_size_type::operator++): Define.
 201         (__max_size_type::operator--): Likewise.
 202         (__max_size_type::operator<=>): Conditionally define (in place
 203         of the other comparison operators).
 204         (__max_diff_type::operator _Tp): Fix formatting.
 205         (__max_diff_type::operator++): Define.
 206         (__max_diff_type::operator--): Likewise.
 207         (__max_diff_type::operator<=>): Conditionally define (in place
 208         of the other comparison operators).
 209         * testsuite/std/ranges/iota/max_size_type.cc (test01): Test
 210         these operator overloads.
 211
 212 2021-03-15  Caroline Tice  <cmtice@google.com>
 213
 214         PR libstdc++/99172
 215         * src/Makefile.am (AM_CXXFLAGS_PRE, AM_CXXFLAGS): Add
 216         AM_CXXFLAGS_PRE with the old definition of AM_CXXFLAGS; make
 217         AM_CXXFLAGS to be AM_CXXFLAGS_PRE with '-fvtable-verify=std'
 218         filtered out.
 219         * src/Makefile.in: Regenerate.
 220
 221 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 222
 223         * src/c++17/floating_to_chars.cc: Simplify the file as if
 224         __SIZEOF_INT128__ is always defined.
 225         [!defined __SIZEOF_INT128__]: Include "uint128_t.h".  Define
 226         a base-10 to_chars overload for the uint128_t class type.
 227         * src/c++17/uint128_t.h: New file.
 228         * testsuite/20_util/to_chars/long_double.cc: No longer expect an
 229         execution FAIL on targets that have a large long double type
 230         but lack __int128.
 231
 232 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 233
 234         * src/c++17/ryu/LOCAL_PATCHES: Update.
 235         * src/c++17/ryu/d2s_intrinsics.h: Don't define uint128_t.
 236         * src/c++17/ryu/generic_128.h: Likewise.
 237         * src/c++17/ryu/ryu_generic_128.h (struct floating_decimal_128):
 238         Use uint128_t instead of __uint128_t.
 239         (generic_binary_to_decimal): Likewise.
 240
 241 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 242
 243         * src/c++17/ryu/LOCAL_PATCHES: New file.
 244
 245 2021-03-11  Patrick Palka  <ppalka@redhat.com>
 246
 247         * src/c++17/floating_to_chars.cc (uint128_t): New conditionally
 248         defined alias of unsigned __int128.
 249         (floating_type_traits_binary128::mantissa_t): Use uint128_t
 250         instead of unsigned __int128.
 251         (floating_type_traits<long double>::mantissa_t)
 252         [LONG_DOUBLE_KIND == LDK_IBM128]: Likewise.
 253         (get_ieee_repr): Likewise.  Make casts from uint_t to mantissa_t
 254         and uint32_t explicit.  Simplify the extraction of mantissa,
 255         exponent and sign bit.
 256
 257 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 258
 259         * include/std/barrier (barrier::arrival_token): New move-only
 260         class that encapsulates the underlying token value.
 261
 262 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 263
 264         * python/libstdcxx/v6/printers.py (find_type): Use tag attribute
 265         instead of unqualified() method.
 266
 267 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 268
 269         PR libstdc++/99537
 270         * include/std/stop_token (_Stop_state_t::_M_release_ownership):
 271         Use acq_rel memory ordering.
 272
 273 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 274
 275         PR libstdc++/99533
 276         * src/c++17/fs_dir.cc (recursive_directory_iterator): Use new
 277         helper function to check for permission denied errors.
 278         * src/filesystem/dir.cc (recursive_directory_iterator):
 279         Likewise.
 280         * src/filesystem/dir-common.h (is_permission_denied_error): New
 281         helper function.
 282
 283 2021-03-11  Jonathan Wakely  <jwakely@redhat.com>
 284
 285         PR libstdc++/99536
 286         * include/bits/random.h (normal_distribution): Use
 287         default-initializer for _M_saved and _M_saved_available.
 288
 289 2021-03-10  John David Anglin  <danglin@gcc.gnu.org>
 290
 291         * testsuite/29_atomics/atomic/wait_notify/bool.cc: Add options to
 292         link with libatomic.
 293         * testsuite/29_atomics/atomic/wait_notify/generic.cc: Likewise.
 294         * testsuite/29_atomics/atomic/wait_notify/pointers.cc: Likewise.
 295         * testsuite/29_atomics/atomic_flag/wait_notify/1.cc: Likewise.
 296         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 297         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 298         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 299         * testsuite/30_threads/barrier/completion.cc: Likewise.
 300         * testsuite/30_threads/latch/3.cc: Likewise.
 301         * testsuite/30_threads/semaphore/try_acquire.cc: Likewise.
 302         * testsuite/30_threads/semaphore/try_acquire_for.cc: Likewise.
 303         * testsuite/30_threads/semaphore/try_acquire_until.cc: Likewise.
 304
 305 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 306
 307         PR libstdc++/99413
 308         * include/bits/align.h: Include debug/assertions.h.
 309         * include/bits/codecvt.h: Include bits/c++config.h.
 310         * include/bits/enable_special_members.h: Likewise.
 311         * include/bits/erase_if.h: Likewise.
 312         * include/bits/functional_hash.h: Include <type_traits>.
 313         * include/bits/invoke.h: Include bits/move.h.
 314         * include/bits/ostream_insert.h: Include bits/exception_defines.h.
 315         * include/bits/parse_numbers.h: Include <type_traits>.
 316         * include/bits/predefined_ops.h: Include bits/c++config.h.
 317         * include/bits/range_access.h: Include bits/stl_iterator.h.
 318         * include/bits/stl_bvector.h: Do not include bits/stl_vector.h.
 319         * include/bits/stl_iterator.h: Include bits/stl_iterator_base_types.h.
 320         * include/bits/stl_uninitialized.h: Include bits/stl_algobase.h.
 321         * include/bits/uniform_int_dist.h: Include bits/concept_check.h.
 322         * include/bits/unique_lock.h: Include bits/std_mutex.h.
 323         * include/debug/assertions.h: Include bits/c++config.h.
 324
 325 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 326
 327         * include/bits/ranges_cmp.h (__eq_builtin_ptr_cmp): Remove.
 328         (ranges::equal_to, ranges::not_equal_to): Do not constrain
 329         with __eq_builtin_ptr_cmp.
 330         (ranges::less, ranges::greater, ranges::less_equal)
 331         (ranges::greater_equal): Do not constrain with
 332         __less_builtin_ptr_cmp.
 333         * libsupc++/compare (compare_three_way): Do not constrain with
 334         __3way_builtin_ptr_cmp.
 335         * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc: Moved to...
 336         * testsuite/18_support/comparisons/object/lwg3530.cc: ...here.
 337         * testsuite/20_util/function_objects/range.cmp/lwg3530.cc: New test.
 338
 339 2021-03-10  Jonathan Wakely  <jwakely@redhat.com>
 340
 341         * testsuite/std/time/syn_c++20.cc: Enable synopsis checks for
 342         C++20 calendar types.
 343
 344 2021-03-06  Jakub Jelinek  <jakub@redhat.com>
 345
 346         PR libstdc++/99396
 347         * include/std/bit (__rotl, __rotr): Add optimized variants for power of
 348         two _Nd which the compiler can pattern match the rotates.
 349
 350 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
 351
 352         PR libstdc++/99382
 353         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
 354         Make storage larger than required. Verify no write to the last
 355         element.
 356         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
 357         Likewise.
 358
 359 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 360
 361         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
 362         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
 363         Likewise.
 364         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
 365         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
 366         Likewise.
 367
 368 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
 369
 370         * include/experimental/bits/simd.h: Replace reserved _X, _B by
 371         _Xp, _Bp.
 372         * include/experimental/bits/simd_builtin.h: Likewise.
 373         * include/experimental/bits/simd_x86.h: Likewise.
 374
 375 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
 376
 377         PR libstdc++/99301
 378         * include/std/chrono (year_month_day::_M_days_since_epoch()):
 379         Convert chrono::month and chrono::day to unsigned before
 380         converting to uint32_t.
 381
 382 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 383
 384         * include/std/chrono (year_month_day::_S_from_days): Perform
 385         all calculations with type uint32_t.
 386
 387 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 388
 389         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
 390         * doc/html/manual/abi.html: Regenerate.
 391
 392 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 393
 394         PR libstdc++/99270
 395         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
 396         FILE instead of FILE.
 397
 398 2021-02-25  Andreas Schwab  <schwab@suse.de>
 399
 400         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
 401         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
 402         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
 403         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
 404
 405 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 406
 407         PR libstdc++/99265
 408         * include/std/chrono (year_month_day::_S_from_days): Cast long
 409         to int explicitly.
 410
 411 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
 412
 413         * include/std/utility (to_underlying): Define.
 414         * include/std/version (__cpp_lib_to_underlying): Define.
 415         * testsuite/20_util/to_underlying/1.cc: New test.
 416         * testsuite/20_util/to_underlying/version.cc: New test.
 417
 418 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 419
 420         PR libstdc++/99261
 421         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
 422         before value to be printed.
 423
 424 2021-02-24  Patrick Palka  <ppalka@redhat.com>
 425
 426         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
 427         Relax the condition that guards the printf code path to accept
 428         F128_type as well as long double.
 429
 430 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 431
 432         * include/std/chrono (year_month_day_last:day): New
 433         implementation.
 434
 435 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 436
 437         * include/std/chrono (year::is_leap): New implementation.
 438         * testsuite/std/time/year/2.cc: New test.
 439
 440 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 441
 442         * include/std/chrono (year_month_day::_M_days_since_epoch):
 443         New implementation.
 444         * testsuite/std/time/year_month_day/4.cc: New test.
 445
 446 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
 447
 448         * include/std/chrono (year_month_day::_S_from_days): New
 449         implementation.
 450         * testsuite/std/time/year_month_day/3.cc: New test.
 451
 452 2021-02-24  Patrick Palka  <ppalka@redhat.com>
 453
 454         PR libstdc++/98384
 455         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
 456         (test01): Simplify verifying the nearby values by using a
 457         2-iteration loop and a dedicated output buffer to check that the
 458         nearby values are different.  Factor out the printf-based
 459         verification into a local function, and check that the leading
 460         hex digits agree before comparing to the output of printf.  Also
 461         verify the output by round-tripping it through from_chars.
 462
 463 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 464
 465         PR libstdc++/98389
 466         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
 467         symbols for long double arguments mangled as 'g'.
 468         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
 469         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
 470         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
 471         Use -mabi=ibmlongdouble for floating_to_chars.cc.
 472         * src/c++17/Makefile.in: Regenerate.
 473         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
 474         New type defining type traits of IEEE binary128 format.
 475         (floating_type_traits<__float128>): Define specialization.
 476         (floating_type_traits<long double>): Define in terms of
 477         floating_type_traits_binary128 when appropriate.
 478         (floating_to_shortest_scientific): Handle __float128.
 479         (sprintf_ld): New function template for printing a long double
 480         or __ieee128 value using sprintf.
 481         (__floating_to_chars_shortest, __floating_to_chars_precision):
 482         Use sprintf_ld.
 483         (to_chars): Define overloads for __float128.
 484
 485 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 486
 487         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
 488
 489 2021-02-23  Martin Sebor  <msebor@redhat.com>
 490
 491         PR c++/99074
 492         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
 493         first argument is null.
 494
 495 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 496
 497         PR libstdc++/99181
 498         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
 499         test.
 500
 501 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 502
 503         PR libstdc++/99181
 504         * include/bits/char_traits.h (char_traits<char>::compare): For
 505         constexpr evaluation don't call
 506         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
 507         directly.
 508
 509 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 510
 511         PR libstdc++/97549
 512         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
 513
 514 2021-02-23  Patrick Palka  <ppalka@redhat.com>
 515
 516         PR libstdc++/98384
 517         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
 518         the high- and low-order parts from an IBM long double value
 519         in an endian-agnostic way.
 520
 521 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
 522
 523         * include/bits/atomic_wait.h (__thread_relax()): Call
 524         __thread_yield() not __gthread_yield().
 525
 526 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 527
 528         * include/bits/atomic_wait.h (__thread_yield()): Check
 529         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
 530         (__thread_relax()): Use __thread_yield() instead of repeating
 531         the preprocessor checks for __gthread_yield.
 532
 533 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 534
 535         * include/std/mutex (once_flag::_M_activate()): Add explicit
 536         return statement for passive case.
 537         (once_flag::_M_finish(bool)): Use reserved name for parameter.
 538
 539 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
 540
 541         PR libstdc++/99096
 542         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
 543
 544 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 545
 546         PR libstdc++/88881
 547         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
 548
 549 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 550
 551         * doc/xml/manual/status_cxx2014.xml: Document implementation
 552         specific properties of std::experimental::filesystem::rename.
 553         * doc/xml/manual/status_cxx2017.xml: Document implementation
 554         specific properties of std::filesystem::rename.
 555         * doc/html/*: Regenerate.
 556         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
 557         for directories on Windows.
 558         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
 559         MoveFileExW on Windows.
 560         * testsuite/27_io/filesystem/operations/rename.cc: New test.
 561         * testsuite/experimental/filesystem/operations/rename.cc: New test.
 562
 563 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 564
 565         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
 566         random number to the path.
 567
 568 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 569
 570         * include/experimental/internet (address_v6::to_string): Include
 571         scope ID in string.
 572         * testsuite/experimental/net/internet/address/v6/members.cc:
 573         Test to_string() results.
 574
 575 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 576
 577         * include/experimental/internet (address_v6::any): Avoid using
 578         memcpy in constexpr function.
 579         (address_v6::loopback): Likewise.
 580         (make_address_v6): Fix missing return statements on error paths.
 581         * include/experimental/io_context: Avoid -Wdangling-else
 582         warning.
 583         * testsuite/experimental/net/internet/address/v4/members.cc:
 584         Remove unused variables.
 585         * testsuite/experimental/net/internet/address/v6/members.cc:
 586         New test.
 587
 588 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 589
 590         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
 591         Add unused attribute to parameter.
 592         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
 593         Likewise.
 594
 595 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 596
 597         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
 598         if -fno-rtti is used.
 599         * testsuite/30_threads/async/forced_unwind.cc: Expect test
 600         to abort if -fno-rtti is used.
 601
 602 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 603
 604         * testsuite/util/testsuite_allocator.h (memory_resource):
 605         Remove requirement for RTTI and exceptions to be enabled.
 606
 607 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 608
 609         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
 610         static_cast when RTTI is disabled.
 611         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
 612         Likewise.
 613         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
 614         Likewise.
 615         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
 616         Likewise.
 617         * testsuite/27_io/basic_stringstream/str/char/2.cc:
 618         Likewise.
 619         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
 620         Likewise.
 621
 622 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 623
 624         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
 625         as unused and only use dynamic_cast when RTTI is enabled.
 626
 627 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 628
 629         PR libstdc++/99077
 630         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
 631         Change int parameter to error_code, to match std::ios_failure.
 632         (__throw_ios_failure(const char*, int)): Construct error_code
 633         from int parameter.
 634
 635 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 636
 637         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
 638         new macro.
 639         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
 640         macro instead of _GLIBCXX_EH_PTR_COMPAT.
 641         (operator==): Likewise.
 642
 643 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 644
 645         PR libstdc++/99058
 646         * doc/xml/manual/status_cxx2011.xml: Document when support
 647         became stable.
 648         * doc/xml/manual/status_cxx2014.xml: Likewise.
 649         * doc/xml/manual/status_cxx2017.xml: Likewise.
 650         * doc/html/manual/status.html: Regenerate.
 651
 652 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 653
 654         PR libstdc++/88881
 655         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
 656
 657 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 658
 659         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
 660         (fs::remove): Use std::system_category() for error codes from
 661         GetLastError().
 662         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
 663         Likewise.
 664
 665 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 666
 667         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
 668         in __MINGW32__ macro name.
 669         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
 670         * testsuite/27_io/filesystem/path/generation/proximate.cc:
 671         Likewise.
 672         * testsuite/27_io/filesystem/path/generation/relative.cc:
 673         Likewise.
 674         * testsuite/util/testsuite_fs.h: Likewise.
 675
 676 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 677
 678         * include/bits/stl_tree.h
 679         (__has_is_transparent, __has_is_transparent_t): Move...
 680         * include/bits/stl_function.h: ...here.
 681         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
 682         (_Hashtable_base<>::_M_equals_tr): New.
 683         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
 684         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
 685         heterogeneous lookup.
 686         (_Hashtable<>::_M_find_before_node_tr): New.
 687         (_Hashtable<>::_M_find_node_tr): New.
 688         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
 689         unordered_map::contains<>, unordered_map::equal_range<>): New member function
 690         templates to perform heterogeneous lookup.
 691         (unordered_multimap::find<>, unordered_multimap::count<>,
 692         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
 693         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
 694         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
 695         (unordered_multiset::find<>, unordered_multiset::count<>,
 696         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
 697         * include/debug/unordered_map
 698         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
 699         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
 700         * include/debug/unordered_set
 701         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
 702         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
 703         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
 704         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
 705         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
 706         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
 707
 708 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 709
 710         * include/bits/stl_deque.h
 711         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
 712         a null pointer test.
 713
 714 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 715
 716         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
 717         test directory after making it writable again.
 718         * testsuite/experimental/filesystem/operations/remove_all.cc:
 719         Likewise.
 720
 721 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 722
 723         PR libstdc++/99021
 724         * include/std/coroutine (coroutine_handle<P>::from_address): Add
 725         noexcept.
 726
 727 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
 728
 729         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
 730         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
 731
 732 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
 733
 734         PR middle-end/98465
 735         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
 736         points to the characters moved by earlier _S_move, compute the source
 737         address using expression based on the __p pointer rather than __s
 738         pointer.
 739
 740 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
 741
 742         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
 743         Add comparison with same category and different values.
 744         * testsuite/19_diagnostics/error_code/operators/less.cc:
 745         Likewise. Fix comparison involving different categories.
 746         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
 747         Likewise.
 748         * testsuite/19_diagnostics/error_condition/operators/less.cc:
 749         Add comment.
 750         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
 751         Likewise.
 752
 753 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
 754
 755         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
 756         calls with a single vaddv for aarch64.
 757
 758 2021-02-03  Matthias Kretz  <kretz@kde.org>
 759
 760         * testsuite/Makefile.am: Warn about the workaround. Add
 761         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
 762         Improve initial user feedback from make check-simd.
 763         * testsuite/Makefile.in: Regenerated.
 764
 765 2021-02-03  Matthias Kretz  <kretz@kde.org>
 766
 767         * include/experimental/bits/simd.h: Add __detail::_Minimum and
 768         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
 769         Add hmin and hmax overloads for simd and const_where_expression.
 770         * include/experimental/bits/simd_scalar.h
 771         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
 772         parameter const-ref to allow calling _S_reduce with an rvalue.
 773         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
 774         hmin and hmax. Since the compiler statically determined that all
 775         tests pass, repeat the test after a call to make_value_unknown.
 776
 777 2021-02-03  Matthias Kretz  <kretz@kde.org>
 778
 779         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
 780         instruction pointer data member. Ensure that the `if (m_failed)`
 781         branch is always inlined into the calling code. The body of the
 782         conditional can still be a function call. Move the get_ip call
 783         into the verify ctor to simplify the ctor calls.
 784         (COMPARE): Don't mention the use of all_of for reduction of a
 785         simd_mask. It only distracts from the real issue.
 786
 787 2021-02-03  Matthias Kretz  <kretz@kde.org>
 788
 789         * testsuite/experimental/simd/driver.sh: Abstract reading test
 790         options into read_src_option function. Read skip, only,
 791         expensive, and xfail via read_src_option. Add timeout and
 792         timeout-factor options and adjust timeout variable accordingly.
 793         * testsuite/experimental/simd/tests/loadstore.cc: Set
 794         timeout-factor 2.
 795
 796 2021-02-03  Matthias Kretz  <kretz@kde.org>
 797
 798         * testsuite/experimental/simd/driver.sh: When handling the pipe
 799         to log (and on verbose to stdout) count the lines. If it exceeds
 800         1000 log the issue and exit 125, which is then handled as a
 801         failure.
 802
 803 2021-02-03  Matthias Kretz  <kretz@kde.org>
 804
 805         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
 806         markup for long double on powerpc64*.
 807
 808 2021-02-03  Matthias Kretz  <kretz@kde.org>
 809
 810         * include/experimental/bits/simd.h: Add __have_power10vec
 811         conditional on _ARCH_PWR10.
 812         * include/experimental/bits/simd_builtin.h: Forward declare
 813         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
 814         defined.
 815         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
 816         _SuperImpl for optimizations and correctness.
 817         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
 818         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
 819         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
 820         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
 821
 822 2021-02-03  Matthias Kretz  <kretz@kde.org>
 823
 824         * testsuite/experimental/simd/driver.sh: Remove executable on
 825         SIGINT. Process compiler and test executable output: In verbose
 826         mode print messages immediately, limited to 1000 lines and
 827         breaking long lines to below $COLUMNS (or 1024 if not set).
 828         Communicating the exit status of the compiler / test with the
 829         necessary pipe is done via a message through stdout/-in.
 830
 831 2021-02-03  Matthias Kretz  <kretz@kde.org>
 832
 833         * testsuite/Makefile.am: Ensure .simd.summary is empty before
 834         collecting a new summary.
 835         * testsuite/Makefile.in: Regenerate.
 836
 837 2021-02-03  Matthias Kretz  <kretz@kde.org>
 838
 839         * testsuite/experimental/simd/generate_makefile.sh: Use
 840         different variables internally than documented for user
 841         overrides. This makes internal append/prepend work as intended.
 842
 843 2021-02-03  Matthias Kretz  <kretz@kde.org>
 844
 845         * testsuite/experimental/simd/driver.sh (verify_test): Print
 846         test output on run xfail. Do not repeat lines from the log that
 847         were already printed on stdout.
 848         (test_selector): Make the compiler flags pattern usable as a
 849         substring selector.
 850         (toplevel): Trap on SIGINT and remove the log and sum files.
 851         Call timout with --foreground to quickly terminate on SIGINT.
 852         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
 853         targets via target patterns. Default DRIVEROPTS to -v for run
 854         targets. Remove log and sum files after completion of the run
 855         target (so that it's always recompiled).
 856         Place help text into text file for reasonable 'make help'
 857         performance.
 858
 859 2021-02-03  Matthias Kretz  <kretz@kde.org>
 860
 861         * include/experimental/bits/simd.h: Remove unnecessary static
 862         assertion. Allow sizeof(8) integer __intrinsic_type to enable
 863         the necessary mask type.
 864
 865 2021-02-03  Matthias Kretz  <kretz@kde.org>
 866
 867         * include/experimental/bits/simd.h: Let __intrinsic_type<long
 868         double, N> be valid if sizeof(long double) == sizeof(double) and
 869         use a __vector double as member type.
 870
 871 2021-02-03  Matthias Kretz  <kretz@kde.org>
 872
 873         * include/experimental/bits/simd.h (__is_intrinsic_type): New
 874         internal type trait. Alias for __is_vector_type on x86.
 875         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
 876         __vector_type.
 877         (__intrin_bitcast): Allow casting to & from vector & intrinsic
 878         types.
 879         (__intrinsic_type): Explicitly specialize for NEON intrinsic
 880         vector types.
 881
 882 2021-02-03  Matthias Kretz  <kretz@kde.org>
 883
 884         * testsuite/experimental/simd/driver.sh: Implement skip, only,
 885         expensive, and xfail markers. They can select on type, ABI tag
 886         subset number, target-triplet, and compiler flags.
 887         * testsuite/experimental/simd/generate_makefile.sh: The summary
 888         now includes lines for unexpected passes and expected failures.
 889         If the skip or only markers are only conditional on the type, do
 890         not generate rules for those types.
 891         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
 892         for ABI tag subsets 1-9.
 893         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
 894         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
 895         * testsuite/experimental/simd/tests/casts.cc: Ditto.
 896         * testsuite/experimental/simd/tests/generator.cc: Ditto.
 897         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
 898         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
 899         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
 900         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
 901         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
 902         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
 903         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
 904         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
 905         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
 906         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
 907         * testsuite/experimental/simd/tests/operators.cc: Ditto.
 908         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
 909         * testsuite/experimental/simd/tests/simd.cc: Ditto.
 910         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
 911         * testsuite/experimental/simd/tests/splits.cc: Ditto.
 912         * testsuite/experimental/simd/tests/where.cc: Ditto.
 913         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
 914         addition replace "test only floattypes" marker by unconditional
 915         "float|double|ldouble" only marker.
 916         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
 917         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
 918         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 919         Ditto.
 920         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
 921         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
 922         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
 923         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
 924         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
 925         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
 926         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
 927         addition, xfail on run because the reference data is missing.
 928
 929 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
 930
 931         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
 932         * doc/xml/manual/status_cxx2014.xml: Likewise.
 933         * doc/xml/manual/status_cxx2017.xml: Likewise.
 934         * doc/html/manual/status.html: Regenerate.
 935
 936 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
 937
 938         PR libstdc++/70303
 939         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
 940         Return 0 if both iterators are value-initialized.
 941         * testsuite/23_containers/deque/70303.cc: New test.
 942         * testsuite/23_containers/vector/70303.cc: New test.
 943
 944 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
 945
 946         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
 947         status.
 948         * doc/xml/manual/status_cxx2014.xml: Likewise.
 949         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
 950         std::from_chars and std::to_chars status. Fix formatting.
 951         * doc/html/manual/status.html: Regenerate.
 952
 953 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
 954
 955         * include/experimental/bits/numeric_traits.h: Update copyright
 956         dates.
 957         * include/experimental/bits/simd.h: Likewise.
 958         * include/experimental/bits/simd_builtin.h: Likewise.
 959         * include/experimental/bits/simd_converter.h: Likewise.
 960         * include/experimental/bits/simd_detail.h: Likewise.
 961         * include/experimental/bits/simd_fixed_size.h: Likewise.
 962         * include/experimental/bits/simd_math.h: Likewise.
 963         * include/experimental/bits/simd_neon.h: Likewise.
 964         * include/experimental/bits/simd_ppc.h: Likewise.
 965         * include/experimental/bits/simd_scalar.h: Likewise.
 966         * include/experimental/bits/simd_x86.h: Likewise.
 967         * include/experimental/bits/simd_x86_conversions.h: Likewise.
 968         * include/experimental/simd: Likewise.
 969         * testsuite/experimental/simd/*: Likewise.
 970
 971 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 972
 973         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
 974         * doc/html/*: Regenerate.
 975
 976 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 977
 978         * testsuite/experimental/simd/generate_makefile.sh: Use printf
 979         instead of echo when printing escape characters.
 980
 981 2021-01-27  Matthias Kretz  <kretz@kde.org>
 982
 983         * scripts/check_simd: New file. This script is called from the
 984         the check-simd target. It determines a set of compiler flags and
 985         simulator setups for calling generate_makefile.sh and passes the
 986         information back to the check-simd target, which recurses to the
 987         generated Makefiles.
 988         * scripts/create_testsuite_files: Remove files below simd/tests/
 989         from testsuite_files and place them in testsuite_files_simd.
 990         * testsuite/Makefile.am: Add testsuite_files_simd. Add
 991         check-simd target.
 992         * testsuite/Makefile.in: Regenerate.
 993         * testsuite/experimental/simd/driver.sh: New file. This script
 994         compiles and runs a given simd test, logging its output and
 995         status. It uses the timeout command to implement compile and
 996         test timeouts.
 997         * testsuite/experimental/simd/generate_makefile.sh: New file.
 998         This script generates a Makefile which uses driver.sh to compile
 999         and run the tests and collect the logs into a single log file.
1000         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
1001         abs(simd).
1002         * testsuite/experimental/simd/tests/algorithms.cc: New file.
1003         Tests min/max(simd, simd).
1004         * testsuite/experimental/simd/tests/bits/conversions.h: New
1005         file. Contains functions to support tests involving conversions.
1006         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
1007         Support functions make_mask and make_vec.
1008         * testsuite/experimental/simd/tests/bits/mathreference.h: New
1009         file. Support functions to supply precomputed math function
1010         reference data.
1011         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
1012         file. Support code for SFINAE testing.
1013         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
1014         * testsuite/experimental/simd/tests/bits/test_values.h: New
1015         file. Test functions to easily drive a test with simd objects
1016         initialized from a given list of values and a range of random
1017         values.
1018         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
1019         Support code to determine the ULP distance of simd objects.
1020         * testsuite/experimental/simd/tests/bits/verify.h: New file.
1021         Test framework for COMPARE'ing simd objects and instantiating
1022         the test templates with value_type and ABI tag.
1023         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
1024         simd broadcasts.
1025         * testsuite/experimental/simd/tests/casts.cc: New file. Test
1026         simd casts.
1027         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
1028         Test floating-point classification functions.
1029         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
1030         frexp(simd).
1031         * testsuite/experimental/simd/tests/generator.cc: New file. Test
1032         simd generator constructor.
1033         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
1034         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
1035         * testsuite/experimental/simd/tests/integer_operators.cc: New
1036         file. Test integer operators.
1037         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
1038         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
1039         modf(simd).
1040         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
1041         (converting) simd loads and stores.
1042         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
1043         log*(simd).
1044         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
1045         Test simd_mask broadcasts.
1046         * testsuite/experimental/simd/tests/mask_conversions.cc: New
1047         file. Test simd_mask conversions.
1048         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
1049         file. Test simd_mask implicit conversions.
1050         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
1051         Test simd_mask loads and stores.
1052         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
1053         file. Test simd_mask operators convert as specified.
1054         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
1055         Test simd_mask compares, subscripts, and negation.
1056         * testsuite/experimental/simd/tests/mask_reductions.cc: New
1057         file. Test simd_mask reductions.
1058         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
1059         1-arg math functions on simd.
1060         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
1061         2-arg math functions on simd.
1062         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
1063         Test implicit conversions on simd binary operators behave as
1064         specified.
1065         * testsuite/experimental/simd/tests/operators.cc: New file. Test
1066         simd compares, subscripts, not, unary minus, plus, minus,
1067         multiplies, divides, increment, and decrement.
1068         * testsuite/experimental/simd/tests/reductions.cc: New file.
1069         Test reduce(simd).
1070         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
1071         remqo(simd).
1072         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
1073         sanity checks of simd types.
1074         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
1075         sin(simd) and cos(simd).
1076         * testsuite/experimental/simd/tests/split_concat.cc: New file.
1077         Test split(simd) and concat(simd, simd).
1078         * testsuite/experimental/simd/tests/splits.cc: New file. Test
1079         split(simd_mask).
1080         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
1081         Test remaining trigonometric functions on simd.
1082         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
1083         file. Test trunc(simd), ceil(simd), and floor(simd).
1084         * testsuite/experimental/simd/tests/where.cc: New file. Test
1085         masked operations using where.
1086
1087 2021-01-27  Matthias Kretz  <kretz@kde.org>
1088
1089         * doc/xml/manual/status_cxx2017.xml: Add implementation status
1090         of the Parallelism TS 2. Document implementation-defined types
1091         and behavior.
1092         * include/Makefile.am: Add new headers.
1093         * include/Makefile.in: Regenerate.
1094         * include/experimental/simd: New file. New header for
1095         Parallelism TS 2.
1096         * include/experimental/bits/numeric_traits.h: New file.
1097         Implementation of P1841R1 using internal naming. Addition of
1098         missing IEC559 functionality query.
1099         * include/experimental/bits/simd.h: New file. Definition of the
1100         public simd interfaces and general implementation helpers.
1101         * include/experimental/bits/simd_builtin.h: New file.
1102         Implementation of the _VecBuiltin simd_abi.
1103         * include/experimental/bits/simd_converter.h: New file. Generic
1104         simd conversions.
1105         * include/experimental/bits/simd_detail.h: New file. Internal
1106         macros for the simd implementation.
1107         * include/experimental/bits/simd_fixed_size.h: New file. Simd
1108         fixed_size ABI specific implementations.
1109         * include/experimental/bits/simd_math.h: New file. Math
1110         overloads for simd.
1111         * include/experimental/bits/simd_neon.h: New file. Simd NEON
1112         specific implementations.
1113         * include/experimental/bits/simd_ppc.h: New file. Implement bit
1114         shifts to avoid invalid results for integral types smaller than
1115         int.
1116         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
1117         ABI specific implementations.
1118         * include/experimental/bits/simd_x86.h: New file. Simd x86
1119         specific implementations.
1120         * include/experimental/bits/simd_x86_conversions.h: New file.
1121         x86 specific conversion optimizations. The conversion patterns
1122         work around missing conversion patterns in the compiler and
1123         should be removed as soon as PR85048 is resolved.
1124         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
1125         Test that all (not all fixed_size<N>, though) standard simd and
1126         simd_mask types are usable.
1127         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
1128         file. As above but with -ffast-math.
1129         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
1130         from the standard test loop. Instead use
1131         check_vect_support_and_set_flags to build simd tests with the
1132         relevant machine flags.
1133
1134 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
1135
1136         PR libstdc++/66414
1137         * include/bits/string_view.tcc
1138         (basic_string_view::find(const CharT*, size_type, size_type)):
1139         Optimize.
1140
1141 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
1142
1143         * include/bits/basic_string.h (basic_string::contains): New
1144         member functions.
1145         * include/std/string_view (basic_string_view::contains):
1146         Likewise.
1147         * include/std/version (__cpp_lib_string_contains): Define.
1148         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
1149         Remove trailing whitespace.
1150         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
1151         Likewise.
1152         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
1153         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
1154         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
1155         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
1156         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
1157
1158 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
1159
1160         * src/c++17/Makefile.in: Regenerate.
1161
1162 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
1163
1164         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
1165         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
1166         __lc_type.
1167         (const char* ctype<char>:: is): Same.
1168
1169 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
1170
1171         PR libstdc++/98725
1172         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
1173         write to a wide character stream if wide character support is
1174         disabled in the library.
1175
1176 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
1177
1178         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
1179         stringbuf not wstringbuf.
1180
1181 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
1182
1183         PR debug/98708
1184         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
1185         Compile with -gno-as-loc-support.
1186         * src/c++11/Makefile.in: Regenerated.
1187
1188 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
1189
1190         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
1191         Add -fcf-protection=none to -march=i486.
1192
1193 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
1194
1195         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
1196         compliant.
1197
1198 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
1199
1200         * testsuite/30_threads/future/members/poll.cc: Calibrate
1201         iteration count.
1202
1203 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
1204
1205         PR libstdc++/98466
1206         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
1207         (_Node_iterator()): Make default.
1208         (_Node_const_iterator()): Make default.
1209         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
1210         iterator checks.
1211         * include/debug/safe_iterator.h
1212         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
1213         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
1214         Likewise.
1215         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
1216         _M_singular checks on input iterators.
1217         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
1218         checks.
1219         * testsuite/23_containers/deque/debug/98466.cc: New test.
1220         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
1221
1222 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
1223
1224         PR libstdc++/98471
1225         * include/bits/fs_path.h (__throw_conversion_error): New
1226         function to throw or abort on character conversion errors.
1227         (__wstr_from_utf8): Move definition after filesystem_error has
1228         been defined. Use __throw_conversion_error.
1229         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
1230         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
1231         (path::u8string): Likewise.
1232
1233 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
1234
1235         * include/std/barrier: Update copyright years. Fix whitespace.
1236         * include/std/version: Fix whitespace.
1237         * testsuite/30_threads/barrier/1.cc: Update copyright years.
1238         * testsuite/30_threads/barrier/2.cc: Likewise.
1239         * testsuite/30_threads/barrier/arrive.cc: Likewise.
1240         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
1241         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
1242         * testsuite/30_threads/barrier/completion.cc: Likewise.
1243
1244 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
1245
1246         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
1247
1248 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
1249
1250         PR libstdc++/98613
1251         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
1252         warning.
1253         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
1254
1255 2021-01-08  Olivier Hainque  <hainque@adacore.com>
1256
1257         * testsuite/20_util/bind/ref_neg.cc: Tweak the
1258         dg-prune-output regex for out-of-build-tree contexts.
1259
1260 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
1261
1262         * doc/doxygen/user.cfg.in: Add new header.
1263         * include/Makefile.am (std_headers): likewise.
1264         * include/Makefile.in: Regenerate.
1265         * include/precompiled/stdc++.h: Add new header.
1266         * include/std/barrier: New file.
1267         * include/std/version: Add __cpp_lib_barrier feature test macro.
1268         * testsuite/30_threads/barrier/1.cc: New test.
1269         * testsuite/30_threads/barrier/2.cc: Likewise.
1270         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
1271         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
1272         * testsuite/30_threads/barrier/arrive.cc: Likewise.
1273         * testsuite/30_threads/barrier/completion.cc: Likewise.
1274
1275 2021-01-07  Patrick Palka  <ppalka@redhat.com>
1276
1277         PR libstdc++/98384
1278         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
1279         instead of the non-standard nextupl and nextdownl.
1280
1281 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
1282
1283         * configure: Re-generate.
1284
1285 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
1286
1287         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
1288
1289 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
1290
1291         * ChangeLog-2020: Rotate ChangeLog.  New file.
1292
1293 \f
1294 Copyright (C) 2021 Free Software Foundation, Inc.
1295
1296 Copying and distribution of this file, with or without modification,
1297 are permitted in any medium without royalty provided the copyright
1298 notice and this notice are preserved.