libstdc++-v3/ChangeLog

   1 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         * include/std/chrono (year_month_day::_S_from_days): Perform
   4         all calculations with type uint32_t.
   5
   6 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
   7
   8         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
   9         * doc/html/manual/abi.html: Regenerate.
  10
  11 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  12
  13         PR libstdc++/99270
  14         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
  15         FILE instead of FILE.
  16
  17 2021-02-25  Andreas Schwab  <schwab@suse.de>
  18
  19         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
  20         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
  21         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
  22         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
  23
  24 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  25
  26         PR libstdc++/99265
  27         * include/std/chrono (year_month_day::_S_from_days): Cast long
  28         to int explicitly.
  29
  30 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  31
  32         * include/std/utility (to_underlying): Define.
  33         * include/std/version (__cpp_lib_to_underlying): Define.
  34         * testsuite/20_util/to_underlying/1.cc: New test.
  35         * testsuite/20_util/to_underlying/version.cc: New test.
  36
  37 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
  38
  39         PR libstdc++/99261
  40         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
  41         before value to be printed.
  42
  43 2021-02-24  Patrick Palka  <ppalka@redhat.com>
  44
  45         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
  46         Relax the condition that guards the printf code path to accept
  47         F128_type as well as long double.
  48
  49 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  50
  51         * include/std/chrono (year_month_day_last:day): New
  52         implementation.
  53
  54 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  55
  56         * include/std/chrono (year::is_leap): New implementation.
  57         * testsuite/std/time/year/2.cc: New test.
  58
  59 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  60
  61         * include/std/chrono (year_month_day::_M_days_since_epoch):
  62         New implementation.
  63         * testsuite/std/time/year_month_day/4.cc: New test.
  64
  65 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  66
  67         * include/std/chrono (year_month_day::_S_from_days): New
  68         implementation.
  69         * testsuite/std/time/year_month_day/3.cc: New test.
  70
  71 2021-02-24  Patrick Palka  <ppalka@redhat.com>
  72
  73         PR libstdc++/98384
  74         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
  75         (test01): Simplify verifying the nearby values by using a
  76         2-iteration loop and a dedicated output buffer to check that the
  77         nearby values are different.  Factor out the printf-based
  78         verification into a local function, and check that the leading
  79         hex digits agree before comparing to the output of printf.  Also
  80         verify the output by round-tripping it through from_chars.
  81
  82 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
  83
  84         PR libstdc++/98389
  85         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
  86         symbols for long double arguments mangled as 'g'.
  87         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
  88         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
  89         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
  90         Use -mabi=ibmlongdouble for floating_to_chars.cc.
  91         * src/c++17/Makefile.in: Regenerate.
  92         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
  93         New type defining type traits of IEEE binary128 format.
  94         (floating_type_traits<__float128>): Define specialization.
  95         (floating_type_traits<long double>): Define in terms of
  96         floating_type_traits_binary128 when appropriate.
  97         (floating_to_shortest_scientific): Handle __float128.
  98         (sprintf_ld): New function template for printing a long double
  99         or __ieee128 value using sprintf.
 100         (__floating_to_chars_shortest, __floating_to_chars_precision):
 101         Use sprintf_ld.
 102         (to_chars): Define overloads for __float128.
 103
 104 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 105
 106         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
 107
 108 2021-02-23  Martin Sebor  <msebor@redhat.com>
 109
 110         PR c++/99074
 111         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
 112         first argument is null.
 113
 114 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 115
 116         PR libstdc++/99181
 117         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
 118         test.
 119
 120 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 121
 122         PR libstdc++/99181
 123         * include/bits/char_traits.h (char_traits<char>::compare): For
 124         constexpr evaluation don't call
 125         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
 126         directly.
 127
 128 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 129
 130         PR libstdc++/97549
 131         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
 132
 133 2021-02-23  Patrick Palka  <ppalka@redhat.com>
 134
 135         PR libstdc++/98384
 136         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
 137         the high- and low-order parts from an IBM long double value
 138         in an endian-agnostic way.
 139
 140 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
 141
 142         * include/bits/atomic_wait.h (__thread_relax()): Call
 143         __thread_yield() not __gthread_yield().
 144
 145 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 146
 147         * include/bits/atomic_wait.h (__thread_yield()): Check
 148         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
 149         (__thread_relax()): Use __thread_yield() instead of repeating
 150         the preprocessor checks for __gthread_yield.
 151
 152 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 153
 154         * include/std/mutex (once_flag::_M_activate()): Add explicit
 155         return statement for passive case.
 156         (once_flag::_M_finish(bool)): Use reserved name for parameter.
 157
 158 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
 159
 160         PR libstdc++/99096
 161         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
 162
 163 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 164
 165         PR libstdc++/88881
 166         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
 167
 168 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 169
 170         * doc/xml/manual/status_cxx2014.xml: Document implementation
 171         specific properties of std::experimental::filesystem::rename.
 172         * doc/xml/manual/status_cxx2017.xml: Document implementation
 173         specific properties of std::filesystem::rename.
 174         * doc/html/*: Regenerate.
 175         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
 176         for directories on Windows.
 177         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
 178         MoveFileExW on Windows.
 179         * testsuite/27_io/filesystem/operations/rename.cc: New test.
 180         * testsuite/experimental/filesystem/operations/rename.cc: New test.
 181
 182 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 183
 184         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
 185         random number to the path.
 186
 187 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 188
 189         * include/experimental/internet (address_v6::to_string): Include
 190         scope ID in string.
 191         * testsuite/experimental/net/internet/address/v6/members.cc:
 192         Test to_string() results.
 193
 194 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 195
 196         * include/experimental/internet (address_v6::any): Avoid using
 197         memcpy in constexpr function.
 198         (address_v6::loopback): Likewise.
 199         (make_address_v6): Fix missing return statements on error paths.
 200         * include/experimental/io_context: Avoid -Wdangling-else
 201         warning.
 202         * testsuite/experimental/net/internet/address/v4/members.cc:
 203         Remove unused variables.
 204         * testsuite/experimental/net/internet/address/v6/members.cc:
 205         New test.
 206
 207 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 208
 209         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
 210         Add unused attribute to parameter.
 211         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
 212         Likewise.
 213
 214 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 215
 216         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
 217         if -fno-rtti is used.
 218         * testsuite/30_threads/async/forced_unwind.cc: Expect test
 219         to abort if -fno-rtti is used.
 220
 221 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * testsuite/util/testsuite_allocator.h (memory_resource):
 224         Remove requirement for RTTI and exceptions to be enabled.
 225
 226 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 227
 228         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
 229         static_cast when RTTI is disabled.
 230         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
 231         Likewise.
 232         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
 233         Likewise.
 234         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
 235         Likewise.
 236         * testsuite/27_io/basic_stringstream/str/char/2.cc:
 237         Likewise.
 238         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
 239         Likewise.
 240
 241 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 242
 243         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
 244         as unused and only use dynamic_cast when RTTI is enabled.
 245
 246 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 247
 248         PR libstdc++/99077
 249         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
 250         Change int parameter to error_code, to match std::ios_failure.
 251         (__throw_ios_failure(const char*, int)): Construct error_code
 252         from int parameter.
 253
 254 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 255
 256         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
 257         new macro.
 258         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
 259         macro instead of _GLIBCXX_EH_PTR_COMPAT.
 260         (operator==): Likewise.
 261
 262 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 263
 264         PR libstdc++/99058
 265         * doc/xml/manual/status_cxx2011.xml: Document when support
 266         became stable.
 267         * doc/xml/manual/status_cxx2014.xml: Likewise.
 268         * doc/xml/manual/status_cxx2017.xml: Likewise.
 269         * doc/html/manual/status.html: Regenerate.
 270
 271 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 272
 273         PR libstdc++/88881
 274         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
 275
 276 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 277
 278         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
 279         (fs::remove): Use std::system_category() for error codes from
 280         GetLastError().
 281         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
 282         Likewise.
 283
 284 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 285
 286         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
 287         in __MINGW32__ macro name.
 288         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
 289         * testsuite/27_io/filesystem/path/generation/proximate.cc:
 290         Likewise.
 291         * testsuite/27_io/filesystem/path/generation/relative.cc:
 292         Likewise.
 293         * testsuite/util/testsuite_fs.h: Likewise.
 294
 295 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 296
 297         * include/bits/stl_tree.h
 298         (__has_is_transparent, __has_is_transparent_t): Move...
 299         * include/bits/stl_function.h: ...here.
 300         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
 301         (_Hashtable_base<>::_M_equals_tr): New.
 302         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
 303         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
 304         heterogeneous lookup.
 305         (_Hashtable<>::_M_find_before_node_tr): New.
 306         (_Hashtable<>::_M_find_node_tr): New.
 307         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
 308         unordered_map::contains<>, unordered_map::equal_range<>): New member function
 309         templates to perform heterogeneous lookup.
 310         (unordered_multimap::find<>, unordered_multimap::count<>,
 311         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
 312         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
 313         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
 314         (unordered_multiset::find<>, unordered_multiset::count<>,
 315         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
 316         * include/debug/unordered_map
 317         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
 318         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
 319         * include/debug/unordered_set
 320         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
 321         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
 322         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
 323         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
 324         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
 325         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
 326
 327 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 328
 329         * include/bits/stl_deque.h
 330         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
 331         a null pointer test.
 332
 333 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 334
 335         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
 336         test directory after making it writable again.
 337         * testsuite/experimental/filesystem/operations/remove_all.cc:
 338         Likewise.
 339
 340 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 341
 342         PR libstdc++/99021
 343         * include/std/coroutine (coroutine_handle<P>::from_address): Add
 344         noexcept.
 345
 346 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
 347
 348         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
 349         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
 350
 351 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
 352
 353         PR middle-end/98465
 354         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
 355         points to the characters moved by earlier _S_move, compute the source
 356         address using expression based on the __p pointer rather than __s
 357         pointer.
 358
 359 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
 360
 361         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
 362         Add comparison with same category and different values.
 363         * testsuite/19_diagnostics/error_code/operators/less.cc:
 364         Likewise. Fix comparison involving different categories.
 365         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
 366         Likewise.
 367         * testsuite/19_diagnostics/error_condition/operators/less.cc:
 368         Add comment.
 369         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
 370         Likewise.
 371
 372 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
 373
 374         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
 375         calls with a single vaddv for aarch64.
 376
 377 2021-02-03  Matthias Kretz  <kretz@kde.org>
 378
 379         * testsuite/Makefile.am: Warn about the workaround. Add
 380         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
 381         Improve initial user feedback from make check-simd.
 382         * testsuite/Makefile.in: Regenerated.
 383
 384 2021-02-03  Matthias Kretz  <kretz@kde.org>
 385
 386         * include/experimental/bits/simd.h: Add __detail::_Minimum and
 387         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
 388         Add hmin and hmax overloads for simd and const_where_expression.
 389         * include/experimental/bits/simd_scalar.h
 390         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
 391         parameter const-ref to allow calling _S_reduce with an rvalue.
 392         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
 393         hmin and hmax. Since the compiler statically determined that all
 394         tests pass, repeat the test after a call to make_value_unknown.
 395
 396 2021-02-03  Matthias Kretz  <kretz@kde.org>
 397
 398         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
 399         instruction pointer data member. Ensure that the `if (m_failed)`
 400         branch is always inlined into the calling code. The body of the
 401         conditional can still be a function call. Move the get_ip call
 402         into the verify ctor to simplify the ctor calls.
 403         (COMPARE): Don't mention the use of all_of for reduction of a
 404         simd_mask. It only distracts from the real issue.
 405
 406 2021-02-03  Matthias Kretz  <kretz@kde.org>
 407
 408         * testsuite/experimental/simd/driver.sh: Abstract reading test
 409         options into read_src_option function. Read skip, only,
 410         expensive, and xfail via read_src_option. Add timeout and
 411         timeout-factor options and adjust timeout variable accordingly.
 412         * testsuite/experimental/simd/tests/loadstore.cc: Set
 413         timeout-factor 2.
 414
 415 2021-02-03  Matthias Kretz  <kretz@kde.org>
 416
 417         * testsuite/experimental/simd/driver.sh: When handling the pipe
 418         to log (and on verbose to stdout) count the lines. If it exceeds
 419         1000 log the issue and exit 125, which is then handled as a
 420         failure.
 421
 422 2021-02-03  Matthias Kretz  <kretz@kde.org>
 423
 424         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
 425         markup for long double on powerpc64*.
 426
 427 2021-02-03  Matthias Kretz  <kretz@kde.org>
 428
 429         * include/experimental/bits/simd.h: Add __have_power10vec
 430         conditional on _ARCH_PWR10.
 431         * include/experimental/bits/simd_builtin.h: Forward declare
 432         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
 433         defined.
 434         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
 435         _SuperImpl for optimizations and correctness.
 436         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
 437         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
 438         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
 439         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
 440
 441 2021-02-03  Matthias Kretz  <kretz@kde.org>
 442
 443         * testsuite/experimental/simd/driver.sh: Remove executable on
 444         SIGINT. Process compiler and test executable output: In verbose
 445         mode print messages immediately, limited to 1000 lines and
 446         breaking long lines to below $COLUMNS (or 1024 if not set).
 447         Communicating the exit status of the compiler / test with the
 448         necessary pipe is done via a message through stdout/-in.
 449
 450 2021-02-03  Matthias Kretz  <kretz@kde.org>
 451
 452         * testsuite/Makefile.am: Ensure .simd.summary is empty before
 453         collecting a new summary.
 454         * testsuite/Makefile.in: Regenerate.
 455
 456 2021-02-03  Matthias Kretz  <kretz@kde.org>
 457
 458         * testsuite/experimental/simd/generate_makefile.sh: Use
 459         different variables internally than documented for user
 460         overrides. This makes internal append/prepend work as intended.
 461
 462 2021-02-03  Matthias Kretz  <kretz@kde.org>
 463
 464         * testsuite/experimental/simd/driver.sh (verify_test): Print
 465         test output on run xfail. Do not repeat lines from the log that
 466         were already printed on stdout.
 467         (test_selector): Make the compiler flags pattern usable as a
 468         substring selector.
 469         (toplevel): Trap on SIGINT and remove the log and sum files.
 470         Call timout with --foreground to quickly terminate on SIGINT.
 471         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
 472         targets via target patterns. Default DRIVEROPTS to -v for run
 473         targets. Remove log and sum files after completion of the run
 474         target (so that it's always recompiled).
 475         Place help text into text file for reasonable 'make help'
 476         performance.
 477
 478 2021-02-03  Matthias Kretz  <kretz@kde.org>
 479
 480         * include/experimental/bits/simd.h: Remove unnecessary static
 481         assertion. Allow sizeof(8) integer __intrinsic_type to enable
 482         the necessary mask type.
 483
 484 2021-02-03  Matthias Kretz  <kretz@kde.org>
 485
 486         * include/experimental/bits/simd.h: Let __intrinsic_type<long
 487         double, N> be valid if sizeof(long double) == sizeof(double) and
 488         use a __vector double as member type.
 489
 490 2021-02-03  Matthias Kretz  <kretz@kde.org>
 491
 492         * include/experimental/bits/simd.h (__is_intrinsic_type): New
 493         internal type trait. Alias for __is_vector_type on x86.
 494         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
 495         __vector_type.
 496         (__intrin_bitcast): Allow casting to & from vector & intrinsic
 497         types.
 498         (__intrinsic_type): Explicitly specialize for NEON intrinsic
 499         vector types.
 500
 501 2021-02-03  Matthias Kretz  <kretz@kde.org>
 502
 503         * testsuite/experimental/simd/driver.sh: Implement skip, only,
 504         expensive, and xfail markers. They can select on type, ABI tag
 505         subset number, target-triplet, and compiler flags.
 506         * testsuite/experimental/simd/generate_makefile.sh: The summary
 507         now includes lines for unexpected passes and expected failures.
 508         If the skip or only markers are only conditional on the type, do
 509         not generate rules for those types.
 510         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
 511         for ABI tag subsets 1-9.
 512         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
 513         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
 514         * testsuite/experimental/simd/tests/casts.cc: Ditto.
 515         * testsuite/experimental/simd/tests/generator.cc: Ditto.
 516         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
 517         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
 518         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
 519         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
 520         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
 521         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
 522         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
 523         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
 524         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
 525         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
 526         * testsuite/experimental/simd/tests/operators.cc: Ditto.
 527         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
 528         * testsuite/experimental/simd/tests/simd.cc: Ditto.
 529         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
 530         * testsuite/experimental/simd/tests/splits.cc: Ditto.
 531         * testsuite/experimental/simd/tests/where.cc: Ditto.
 532         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
 533         addition replace "test only floattypes" marker by unconditional
 534         "float|double|ldouble" only marker.
 535         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
 536         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
 537         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 538         Ditto.
 539         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
 540         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
 541         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
 542         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
 543         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
 544         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
 545         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
 546         addition, xfail on run because the reference data is missing.
 547
 548 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
 549
 550         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
 551         * doc/xml/manual/status_cxx2014.xml: Likewise.
 552         * doc/xml/manual/status_cxx2017.xml: Likewise.
 553         * doc/html/manual/status.html: Regenerate.
 554
 555 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
 556
 557         PR libstdc++/70303
 558         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
 559         Return 0 if both iterators are value-initialized.
 560         * testsuite/23_containers/deque/70303.cc: New test.
 561         * testsuite/23_containers/vector/70303.cc: New test.
 562
 563 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
 564
 565         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
 566         status.
 567         * doc/xml/manual/status_cxx2014.xml: Likewise.
 568         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
 569         std::from_chars and std::to_chars status. Fix formatting.
 570         * doc/html/manual/status.html: Regenerate.
 571
 572 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
 573
 574         * include/experimental/bits/numeric_traits.h: Update copyright
 575         dates.
 576         * include/experimental/bits/simd.h: Likewise.
 577         * include/experimental/bits/simd_builtin.h: Likewise.
 578         * include/experimental/bits/simd_converter.h: Likewise.
 579         * include/experimental/bits/simd_detail.h: Likewise.
 580         * include/experimental/bits/simd_fixed_size.h: Likewise.
 581         * include/experimental/bits/simd_math.h: Likewise.
 582         * include/experimental/bits/simd_neon.h: Likewise.
 583         * include/experimental/bits/simd_ppc.h: Likewise.
 584         * include/experimental/bits/simd_scalar.h: Likewise.
 585         * include/experimental/bits/simd_x86.h: Likewise.
 586         * include/experimental/bits/simd_x86_conversions.h: Likewise.
 587         * include/experimental/simd: Likewise.
 588         * testsuite/experimental/simd/*: Likewise.
 589
 590 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 591
 592         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
 593         * doc/html/*: Regenerate.
 594
 595 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 596
 597         * testsuite/experimental/simd/generate_makefile.sh: Use printf
 598         instead of echo when printing escape characters.
 599
 600 2021-01-27  Matthias Kretz  <kretz@kde.org>
 601
 602         * scripts/check_simd: New file. This script is called from the
 603         the check-simd target. It determines a set of compiler flags and
 604         simulator setups for calling generate_makefile.sh and passes the
 605         information back to the check-simd target, which recurses to the
 606         generated Makefiles.
 607         * scripts/create_testsuite_files: Remove files below simd/tests/
 608         from testsuite_files and place them in testsuite_files_simd.
 609         * testsuite/Makefile.am: Add testsuite_files_simd. Add
 610         check-simd target.
 611         * testsuite/Makefile.in: Regenerate.
 612         * testsuite/experimental/simd/driver.sh: New file. This script
 613         compiles and runs a given simd test, logging its output and
 614         status. It uses the timeout command to implement compile and
 615         test timeouts.
 616         * testsuite/experimental/simd/generate_makefile.sh: New file.
 617         This script generates a Makefile which uses driver.sh to compile
 618         and run the tests and collect the logs into a single log file.
 619         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
 620         abs(simd).
 621         * testsuite/experimental/simd/tests/algorithms.cc: New file.
 622         Tests min/max(simd, simd).
 623         * testsuite/experimental/simd/tests/bits/conversions.h: New
 624         file. Contains functions to support tests involving conversions.
 625         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
 626         Support functions make_mask and make_vec.
 627         * testsuite/experimental/simd/tests/bits/mathreference.h: New
 628         file. Support functions to supply precomputed math function
 629         reference data.
 630         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
 631         file. Support code for SFINAE testing.
 632         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
 633         * testsuite/experimental/simd/tests/bits/test_values.h: New
 634         file. Test functions to easily drive a test with simd objects
 635         initialized from a given list of values and a range of random
 636         values.
 637         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
 638         Support code to determine the ULP distance of simd objects.
 639         * testsuite/experimental/simd/tests/bits/verify.h: New file.
 640         Test framework for COMPARE'ing simd objects and instantiating
 641         the test templates with value_type and ABI tag.
 642         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
 643         simd broadcasts.
 644         * testsuite/experimental/simd/tests/casts.cc: New file. Test
 645         simd casts.
 646         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
 647         Test floating-point classification functions.
 648         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
 649         frexp(simd).
 650         * testsuite/experimental/simd/tests/generator.cc: New file. Test
 651         simd generator constructor.
 652         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
 653         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
 654         * testsuite/experimental/simd/tests/integer_operators.cc: New
 655         file. Test integer operators.
 656         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 657         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
 658         modf(simd).
 659         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
 660         (converting) simd loads and stores.
 661         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
 662         log*(simd).
 663         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
 664         Test simd_mask broadcasts.
 665         * testsuite/experimental/simd/tests/mask_conversions.cc: New
 666         file. Test simd_mask conversions.
 667         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
 668         file. Test simd_mask implicit conversions.
 669         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
 670         Test simd_mask loads and stores.
 671         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
 672         file. Test simd_mask operators convert as specified.
 673         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
 674         Test simd_mask compares, subscripts, and negation.
 675         * testsuite/experimental/simd/tests/mask_reductions.cc: New
 676         file. Test simd_mask reductions.
 677         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
 678         1-arg math functions on simd.
 679         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
 680         2-arg math functions on simd.
 681         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
 682         Test implicit conversions on simd binary operators behave as
 683         specified.
 684         * testsuite/experimental/simd/tests/operators.cc: New file. Test
 685         simd compares, subscripts, not, unary minus, plus, minus,
 686         multiplies, divides, increment, and decrement.
 687         * testsuite/experimental/simd/tests/reductions.cc: New file.
 688         Test reduce(simd).
 689         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
 690         remqo(simd).
 691         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
 692         sanity checks of simd types.
 693         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
 694         sin(simd) and cos(simd).
 695         * testsuite/experimental/simd/tests/split_concat.cc: New file.
 696         Test split(simd) and concat(simd, simd).
 697         * testsuite/experimental/simd/tests/splits.cc: New file. Test
 698         split(simd_mask).
 699         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
 700         Test remaining trigonometric functions on simd.
 701         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
 702         file. Test trunc(simd), ceil(simd), and floor(simd).
 703         * testsuite/experimental/simd/tests/where.cc: New file. Test
 704         masked operations using where.
 705
 706 2021-01-27  Matthias Kretz  <kretz@kde.org>
 707
 708         * doc/xml/manual/status_cxx2017.xml: Add implementation status
 709         of the Parallelism TS 2. Document implementation-defined types
 710         and behavior.
 711         * include/Makefile.am: Add new headers.
 712         * include/Makefile.in: Regenerate.
 713         * include/experimental/simd: New file. New header for
 714         Parallelism TS 2.
 715         * include/experimental/bits/numeric_traits.h: New file.
 716         Implementation of P1841R1 using internal naming. Addition of
 717         missing IEC559 functionality query.
 718         * include/experimental/bits/simd.h: New file. Definition of the
 719         public simd interfaces and general implementation helpers.
 720         * include/experimental/bits/simd_builtin.h: New file.
 721         Implementation of the _VecBuiltin simd_abi.
 722         * include/experimental/bits/simd_converter.h: New file. Generic
 723         simd conversions.
 724         * include/experimental/bits/simd_detail.h: New file. Internal
 725         macros for the simd implementation.
 726         * include/experimental/bits/simd_fixed_size.h: New file. Simd
 727         fixed_size ABI specific implementations.
 728         * include/experimental/bits/simd_math.h: New file. Math
 729         overloads for simd.
 730         * include/experimental/bits/simd_neon.h: New file. Simd NEON
 731         specific implementations.
 732         * include/experimental/bits/simd_ppc.h: New file. Implement bit
 733         shifts to avoid invalid results for integral types smaller than
 734         int.
 735         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
 736         ABI specific implementations.
 737         * include/experimental/bits/simd_x86.h: New file. Simd x86
 738         specific implementations.
 739         * include/experimental/bits/simd_x86_conversions.h: New file.
 740         x86 specific conversion optimizations. The conversion patterns
 741         work around missing conversion patterns in the compiler and
 742         should be removed as soon as PR85048 is resolved.
 743         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
 744         Test that all (not all fixed_size<N>, though) standard simd and
 745         simd_mask types are usable.
 746         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
 747         file. As above but with -ffast-math.
 748         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
 749         from the standard test loop. Instead use
 750         check_vect_support_and_set_flags to build simd tests with the
 751         relevant machine flags.
 752
 753 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 754
 755         PR libstdc++/66414
 756         * include/bits/string_view.tcc
 757         (basic_string_view::find(const CharT*, size_type, size_type)):
 758         Optimize.
 759
 760 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
 761
 762         * include/bits/basic_string.h (basic_string::contains): New
 763         member functions.
 764         * include/std/string_view (basic_string_view::contains):
 765         Likewise.
 766         * include/std/version (__cpp_lib_string_contains): Define.
 767         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
 768         Remove trailing whitespace.
 769         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
 770         Likewise.
 771         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
 772         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
 773         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
 774         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
 775         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
 776
 777 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
 778
 779         * src/c++17/Makefile.in: Regenerate.
 780
 781 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
 782
 783         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
 784         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
 785         __lc_type.
 786         (const char* ctype<char>:: is): Same.
 787
 788 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 789
 790         PR libstdc++/98725
 791         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
 792         write to a wide character stream if wide character support is
 793         disabled in the library.
 794
 795 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 796
 797         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
 798         stringbuf not wstringbuf.
 799
 800 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
 801
 802         PR debug/98708
 803         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
 804         Compile with -gno-as-loc-support.
 805         * src/c++11/Makefile.in: Regenerated.
 806
 807 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
 808
 809         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
 810         Add -fcf-protection=none to -march=i486.
 811
 812 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 813
 814         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
 815         compliant.
 816
 817 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
 818
 819         * testsuite/30_threads/future/members/poll.cc: Calibrate
 820         iteration count.
 821
 822 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 823
 824         PR libstdc++/98466
 825         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
 826         (_Node_iterator()): Make default.
 827         (_Node_const_iterator()): Make default.
 828         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
 829         iterator checks.
 830         * include/debug/safe_iterator.h
 831         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
 832         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
 833         Likewise.
 834         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
 835         _M_singular checks on input iterators.
 836         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
 837         checks.
 838         * testsuite/23_containers/deque/debug/98466.cc: New test.
 839         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
 840
 841 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 842
 843         PR libstdc++/98471
 844         * include/bits/fs_path.h (__throw_conversion_error): New
 845         function to throw or abort on character conversion errors.
 846         (__wstr_from_utf8): Move definition after filesystem_error has
 847         been defined. Use __throw_conversion_error.
 848         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
 849         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
 850         (path::u8string): Likewise.
 851
 852 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 853
 854         * include/std/barrier: Update copyright years. Fix whitespace.
 855         * include/std/version: Fix whitespace.
 856         * testsuite/30_threads/barrier/1.cc: Update copyright years.
 857         * testsuite/30_threads/barrier/2.cc: Likewise.
 858         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 859         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 860         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 861         * testsuite/30_threads/barrier/completion.cc: Likewise.
 862
 863 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
 864
 865         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
 866
 867 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
 868
 869         PR libstdc++/98613
 870         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
 871         warning.
 872         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
 873
 874 2021-01-08  Olivier Hainque  <hainque@adacore.com>
 875
 876         * testsuite/20_util/bind/ref_neg.cc: Tweak the
 877         dg-prune-output regex for out-of-build-tree contexts.
 878
 879 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
 880
 881         * doc/doxygen/user.cfg.in: Add new header.
 882         * include/Makefile.am (std_headers): likewise.
 883         * include/Makefile.in: Regenerate.
 884         * include/precompiled/stdc++.h: Add new header.
 885         * include/std/barrier: New file.
 886         * include/std/version: Add __cpp_lib_barrier feature test macro.
 887         * testsuite/30_threads/barrier/1.cc: New test.
 888         * testsuite/30_threads/barrier/2.cc: Likewise.
 889         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 890         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 891         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 892         * testsuite/30_threads/barrier/completion.cc: Likewise.
 893
 894 2021-01-07  Patrick Palka  <ppalka@redhat.com>
 895
 896         PR libstdc++/98384
 897         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
 898         instead of the non-standard nextupl and nextdownl.
 899
 900 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 901
 902         * configure: Re-generate.
 903
 904 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
 905
 906         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
 907
 908 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 909
 910         * ChangeLog-2020: Rotate ChangeLog.  New file.
 911
 912 \f
 913 Copyright (C) 2021 Free Software Foundation, Inc.
 914
 915 Copying and distribution of this file, with or without modification,
 916 are permitted in any medium without royalty provided the copyright
 917 notice and this notice are preserved.