libstdc++-v3/ChangeLog

   1 2021-03-04  Jonathan Wakely  <jwakely@redhat.com>
   2
   3         PR libstdc++/99382
   4         * testsuite/20_util/specialized_algorithms/uninitialized_default_n/sizes.cc:
   5         Make storage larger than required. Verify no write to the last
   6         element.
   7         * testsuite/20_util/specialized_algorithms/uninitialized_value_construct_n/sizes.cc:
   8         Likewise.
   9
  10 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
  11
  12         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
  13         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
  14         Likewise.
  15         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
  16         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
  17         Likewise.
  18
  19 2021-03-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
  20
  21         * include/experimental/bits/simd.h: Replace reserved _X, _B by
  22         _Xp, _Bp.
  23         * include/experimental/bits/simd_builtin.h: Likewise.
  24         * include/experimental/bits/simd_x86.h: Likewise.
  25
  26 2021-02-27  Jonathan Wakely  <jwakely@redhat.com>
  27
  28         PR libstdc++/99301
  29         * include/std/chrono (year_month_day::_M_days_since_epoch()):
  30         Convert chrono::month and chrono::day to unsigned before
  31         converting to uint32_t.
  32
  33 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  34
  35         * include/std/chrono (year_month_day::_S_from_days): Perform
  36         all calculations with type uint32_t.
  37
  38 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  39
  40         * doc/xml/manual/abi.xml: Document versioning for GCC 11.
  41         * doc/html/manual/abi.html: Regenerate.
  42
  43 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  44
  45         PR libstdc++/99270
  46         * testsuite/27_io/headers/cstdio/types_std.cc: Use pointer to
  47         FILE instead of FILE.
  48
  49 2021-02-25  Andreas Schwab  <schwab@suse.de>
  50
  51         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
  52         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
  53         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
  54         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
  55
  56 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  57
  58         PR libstdc++/99265
  59         * include/std/chrono (year_month_day::_S_from_days): Cast long
  60         to int explicitly.
  61
  62 2021-02-25  Jonathan Wakely  <jwakely@redhat.com>
  63
  64         * include/std/utility (to_underlying): Define.
  65         * include/std/version (__cpp_lib_to_underlying): Define.
  66         * testsuite/20_util/to_underlying/1.cc: New test.
  67         * testsuite/20_util/to_underlying/version.cc: New test.
  68
  69 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
  70
  71         PR libstdc++/99261
  72         * src/c++17/floating_to_chars.cc (sprintf_ld): Add extra args
  73         before value to be printed.
  74
  75 2021-02-24  Patrick Palka  <ppalka@redhat.com>
  76
  77         * src/c++17/floating_to_chars.cc (__floating_to_chars_precision):
  78         Relax the condition that guards the printf code path to accept
  79         F128_type as well as long double.
  80
  81 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  82
  83         * include/std/chrono (year_month_day_last:day): New
  84         implementation.
  85
  86 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  87
  88         * include/std/chrono (year::is_leap): New implementation.
  89         * testsuite/std/time/year/2.cc: New test.
  90
  91 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  92
  93         * include/std/chrono (year_month_day::_M_days_since_epoch):
  94         New implementation.
  95         * testsuite/std/time/year_month_day/4.cc: New test.
  96
  97 2021-02-24  Cassio Neri  <cassio.neri@gmail.com>
  98
  99         * include/std/chrono (year_month_day::_S_from_days): New
 100         implementation.
 101         * testsuite/std/time/year_month_day/3.cc: New test.
 102
 103 2021-02-24  Patrick Palka  <ppalka@redhat.com>
 104
 105         PR libstdc++/98384
 106         * testsuite/20_util/to_chars/long_double.cc: Include <optional>.
 107         (test01): Simplify verifying the nearby values by using a
 108         2-iteration loop and a dedicated output buffer to check that the
 109         nearby values are different.  Factor out the printf-based
 110         verification into a local function, and check that the leading
 111         hex digits agree before comparing to the output of printf.  Also
 112         verify the output by round-tripping it through from_chars.
 113
 114 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 115
 116         PR libstdc++/98389
 117         * config/abi/pre/gnu.ver (GLIBCXX_3.4.29): Do not match to_chars
 118         symbols for long double arguments mangled as 'g'.
 119         * config/os/gnu-linux/ldbl-extra.ver: Likewise.
 120         * config/os/gnu-linux/ldbl-ieee128-extra.ver: Likewise.
 121         * src/c++17/Makefile.am [GLIBCXX_LDBL_ALT128_COMPAT_TRUE]:
 122         Use -mabi=ibmlongdouble for floating_to_chars.cc.
 123         * src/c++17/Makefile.in: Regenerate.
 124         * src/c++17/floating_to_chars.cc (floating_type_traits_binary128):
 125         New type defining type traits of IEEE binary128 format.
 126         (floating_type_traits<__float128>): Define specialization.
 127         (floating_type_traits<long double>): Define in terms of
 128         floating_type_traits_binary128 when appropriate.
 129         (floating_to_shortest_scientific): Handle __float128.
 130         (sprintf_ld): New function template for printing a long double
 131         or __ieee128 value using sprintf.
 132         (__floating_to_chars_shortest, __floating_to_chars_precision):
 133         Use sprintf_ld.
 134         (to_chars): Define overloads for __float128.
 135
 136 2021-02-24  Jonathan Wakely  <jwakely@redhat.com>
 137
 138         * testsuite/17_intro/names.cc: Undefine 'u' on powerpc*-linux*.
 139
 140 2021-02-23  Martin Sebor  <msebor@redhat.com>
 141
 142         PR c++/99074
 143         * libsupc++/dyncast.cc (__dynamic_cast): Return null when
 144         first argument is null.
 145
 146 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 147
 148         PR libstdc++/99181
 149         * testsuite/21_strings/char_traits/requirements/char/99181.cc: New
 150         test.
 151
 152 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 153
 154         PR libstdc++/99181
 155         * include/bits/char_traits.h (char_traits<char>::compare): For
 156         constexpr evaluation don't call
 157         __gnu_cxx::char_traits<char_type>::compare but do the comparison loop
 158         directly.
 159
 160 2021-02-23  Jakub Jelinek  <jakub@redhat.com>
 161
 162         PR libstdc++/97549
 163         * include/pstl/parallel_backend_serial.h: Remove __pstl::__par_backend.
 164
 165 2021-02-23  Patrick Palka  <ppalka@redhat.com>
 166
 167         PR libstdc++/98384
 168         * src/c++17/floating_to_chars.cc (get_ieee_repr): Extract
 169         the high- and low-order parts from an IBM long double value
 170         in an endian-agnostic way.
 171
 172 2021-02-19  Jonathan Wakely  <jwakely@redhat.com>
 173
 174         * include/bits/atomic_wait.h (__thread_relax()): Call
 175         __thread_yield() not __gthread_yield().
 176
 177 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 178
 179         * include/bits/atomic_wait.h (__thread_yield()): Check
 180         _GLIBCXX_HAS_GTHREADS before using __gthread_yield.
 181         (__thread_relax()): Use __thread_yield() instead of repeating
 182         the preprocessor checks for __gthread_yield.
 183
 184 2021-02-15  Jonathan Wakely  <jwakely@redhat.com>
 185
 186         * include/std/mutex (once_flag::_M_activate()): Add explicit
 187         return statement for passive case.
 188         (once_flag::_M_finish(bool)): Use reserved name for parameter.
 189
 190 2021-02-14  Jonathan Wakely  <jwakely@redhat.com>
 191
 192         PR libstdc++/99096
 193         * testsuite/util/testsuite_fs.h: Always include <unistd.h>.
 194
 195 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 196
 197         PR libstdc++/88881
 198         * src/c++17/fs_ops.cc (fs::symlink_status): Re-enable workaround.
 199
 200 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 201
 202         * doc/xml/manual/status_cxx2014.xml: Document implementation
 203         specific properties of std::experimental::filesystem::rename.
 204         * doc/xml/manual/status_cxx2017.xml: Document implementation
 205         specific properties of std::filesystem::rename.
 206         * doc/html/*: Regenerate.
 207         * src/c++17/fs_ops.cc (fs::rename): Implement correct behaviour
 208         for directories on Windows.
 209         * src/filesystem/ops-common.h (__gnu_posix::rename): Use
 210         MoveFileExW on Windows.
 211         * testsuite/27_io/filesystem/operations/rename.cc: New test.
 212         * testsuite/experimental/filesystem/operations/rename.cc: New test.
 213
 214 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 215
 216         * testsuite/util/testsuite_fs.h (nonexistent_path): Add
 217         random number to the path.
 218
 219 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 220
 221         * include/experimental/internet (address_v6::to_string): Include
 222         scope ID in string.
 223         * testsuite/experimental/net/internet/address/v6/members.cc:
 224         Test to_string() results.
 225
 226 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 227
 228         * include/experimental/internet (address_v6::any): Avoid using
 229         memcpy in constexpr function.
 230         (address_v6::loopback): Likewise.
 231         (make_address_v6): Fix missing return statements on error paths.
 232         * include/experimental/io_context: Avoid -Wdangling-else
 233         warning.
 234         * testsuite/experimental/net/internet/address/v4/members.cc:
 235         Remove unused variables.
 236         * testsuite/experimental/net/internet/address/v6/members.cc:
 237         New test.
 238
 239 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 240
 241         * include/bits/shared_ptr_base.h (__shared_ptr::_M_get_deleter):
 242         Add unused attribute to parameter.
 243         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq):
 244         Likewise.
 245
 246 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 247
 248         * testsuite/27_io/basic_ostream/emit/1.cc: Expect test to fail
 249         if -fno-rtti is used.
 250         * testsuite/30_threads/async/forced_unwind.cc: Expect test
 251         to abort if -fno-rtti is used.
 252
 253 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 254
 255         * testsuite/util/testsuite_allocator.h (memory_resource):
 256         Remove requirement for RTTI and exceptions to be enabled.
 257
 258 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 259
 260         * testsuite/27_io/basic_istringstream/rdbuf/char/2832.cc: Use
 261         static_cast when RTTI is disabled.
 262         * testsuite/27_io/basic_istringstream/rdbuf/wchar_t/2832.cc:
 263         Likewise.
 264         * testsuite/27_io/basic_ostringstream/rdbuf/char/2832.cc:
 265         Likewise.
 266         * testsuite/27_io/basic_ostringstream/rdbuf/wchar_t/2832.cc:
 267         Likewise.
 268         * testsuite/27_io/basic_stringstream/str/char/2.cc:
 269         Likewise.
 270         * testsuite/27_io/basic_stringstream/str/wchar_t/2.cc:
 271         Likewise.
 272
 273 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 274
 275         * include/std/ostream (__syncbuf_base::_S_get): Mark parameter
 276         as unused and only use dynamic_cast when RTTI is enabled.
 277
 278 2021-02-12  Jonathan Wakely  <jwakely@redhat.com>
 279
 280         PR libstdc++/99077
 281         * src/c++11/cxx11-ios_failure.cc (__ios_failure(const char*, int)):
 282         Change int parameter to error_code, to match std::ios_failure.
 283         (__throw_ios_failure(const char*, int)): Construct error_code
 284         from int parameter.
 285
 286 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 287
 288         * libsupc++/eh_ptr.cc (_GLIBCXX_EH_PTR_RELOPS_COMPAT): Define
 289         new macro.
 290         * libsupc++/exception_ptr.h (_GLIBCXX_EH_PTR_USED): Check new
 291         macro instead of _GLIBCXX_EH_PTR_COMPAT.
 292         (operator==): Likewise.
 293
 294 2021-02-11  Jonathan Wakely  <jwakely@redhat.com>
 295
 296         PR libstdc++/99058
 297         * doc/xml/manual/status_cxx2011.xml: Document when support
 298         became stable.
 299         * doc/xml/manual/status_cxx2014.xml: Likewise.
 300         * doc/xml/manual/status_cxx2017.xml: Likewise.
 301         * doc/html/manual/status.html: Regenerate.
 302
 303 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 304
 305         PR libstdc++/88881
 306         * src/c++17/fs_ops.cc (fs::status): Re-enable workaround.
 307
 308 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 309
 310         * src/c++17/fs_ops.cc (fs::create_hard_link, fs::equivalent)
 311         (fs::remove): Use std::system_category() for error codes from
 312         GetLastError().
 313         * src/filesystem/ops.cc (fs::create_hard_link, fs::remove):
 314         Likewise.
 315
 316 2021-02-10  Jonathan Wakely  <jwakely@redhat.com>
 317
 318         * testsuite/27_io/filesystem/operations/proximate.cc: Fix typo
 319         in __MINGW32__ macro name.
 320         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
 321         * testsuite/27_io/filesystem/path/generation/proximate.cc:
 322         Likewise.
 323         * testsuite/27_io/filesystem/path/generation/relative.cc:
 324         Likewise.
 325         * testsuite/util/testsuite_fs.h: Likewise.
 326
 327 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 328
 329         * include/bits/stl_tree.h
 330         (__has_is_transparent, __has_is_transparent_t): Move...
 331         * include/bits/stl_function.h: ...here.
 332         * include/bits/hashtable_policy.h (_Hash_code_base<>::_M_hash_code_tr): New..
 333         (_Hashtable_base<>::_M_equals_tr): New.
 334         * include/bits/hashtable.h (_Hashtable<>::_M_find_tr, _Hashtable<>::_M_count_tr,
 335         _Hashtable<>::_M_equal_range_tr): New member function templates to perform
 336         heterogeneous lookup.
 337         (_Hashtable<>::_M_find_before_node_tr): New.
 338         (_Hashtable<>::_M_find_node_tr): New.
 339         * include/bits/unordered_map.h (unordered_map::find<>, unordered_map::count<>,
 340         unordered_map::contains<>, unordered_map::equal_range<>): New member function
 341         templates to perform heterogeneous lookup.
 342         (unordered_multimap::find<>, unordered_multimap::count<>,
 343         unordered_multimap::contains<>, unordered_multimap::equal_range<>): Likewise.
 344         * include/bits/unordered_set.h  (unordered_set::find<>, unordered_set::count<>,
 345         unordered_set::contains<>, unordered_set::equal_range<>): Likewise.
 346         (unordered_multiset::find<>, unordered_multiset::count<>,
 347         unordered_multiset::contains<>, unordered_multiset::equal_range<>): Likewise.
 348         * include/debug/unordered_map
 349         (unordered_map::find<>, unordered_map::equal_range<>): Likewise.
 350         (unordered_multimap::find<>, unordered_multimap::equal_range<>): Likewise.
 351         * include/debug/unordered_set
 352         (unordered_set::find<>, unordered_set::equal_range<>): Likewise.
 353         (unordered_multiset::find<>, unordered_multiset::equal_range<>): Likewise.
 354         * testsuite/23_containers/unordered_map/operations/1.cc: New test.
 355         * testsuite/23_containers/unordered_multimap/operations/1.cc: New test.
 356         * testsuite/23_containers/unordered_multiset/operations/1.cc: New test.
 357         * testsuite/23_containers/unordered_set/operations/1.cc: New test.
 358
 359 2021-02-09  François Dumont  <fdumont@gcc.gnu.org>
 360
 361         * include/bits/stl_deque.h
 362         (std::operator-(deque::iterator, deque::iterator)): Replace if/then with
 363         a null pointer test.
 364
 365 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 366
 367         * testsuite/27_io/filesystem/operations/remove_all.cc: Remove
 368         test directory after making it writable again.
 369         * testsuite/experimental/filesystem/operations/remove_all.cc:
 370         Likewise.
 371
 372 2021-02-09  Jonathan Wakely  <jwakely@redhat.com>
 373
 374         PR libstdc++/99021
 375         * include/std/coroutine (coroutine_handle<P>::from_address): Add
 376         noexcept.
 377
 378 2021-02-09  Vladimir Vishnevsky  <vv.os.swe@gmail.com>
 379
 380         * include/ext/stdio_sync_filebuf.h: Remove unused <unistd.h>.
 381         * src/c++17/fs_ops.cc (fs::permissions): Qualify mode_t.
 382
 383 2021-02-09  Jakub Jelinek  <jakub@redhat.com>
 384
 385         PR middle-end/98465
 386         * include/bits/basic_string.tcc (basic_string::_M_replace): When __s
 387         points to the characters moved by earlier _S_move, compute the source
 388         address using expression based on the __p pointer rather than __s
 389         pointer.
 390
 391 2021-02-03  Jonathan Wakely  <jwakely@redhat.com>
 392
 393         * testsuite/19_diagnostics/error_code/operators/not_equal.cc:
 394         Add comparison with same category and different values.
 395         * testsuite/19_diagnostics/error_code/operators/less.cc:
 396         Likewise. Fix comparison involving different categories.
 397         * testsuite/19_diagnostics/error_code/operators/three_way.cc:
 398         Likewise.
 399         * testsuite/19_diagnostics/error_condition/operators/less.cc:
 400         Add comment.
 401         * testsuite/19_diagnostics/error_condition/operators/three_way.cc:
 402         Likewise.
 403
 404 2021-02-03  yaozhongxiao  <yaozhongxiao@linux.alibaba.com>
 405
 406         * include/experimental/bits/simd_neon.h: Replace repeated vpadd
 407         calls with a single vaddv for aarch64.
 408
 409 2021-02-03  Matthias Kretz  <kretz@kde.org>
 410
 411         * testsuite/Makefile.am: Warn about the workaround. Add
 412         -fno-tree-vrp to CXXFLAGS passed to the check_simd script.
 413         Improve initial user feedback from make check-simd.
 414         * testsuite/Makefile.in: Regenerated.
 415
 416 2021-02-03  Matthias Kretz  <kretz@kde.org>
 417
 418         * include/experimental/bits/simd.h: Add __detail::_Minimum and
 419         __detail::_Maximum to use them as _BinaryOperation to _S_reduce.
 420         Add hmin and hmax overloads for simd and const_where_expression.
 421         * include/experimental/bits/simd_scalar.h
 422         (_SimdImplScalar::_S_reduce): Make unused _BinaryOperation
 423         parameter const-ref to allow calling _S_reduce with an rvalue.
 424         * testsuite/experimental/simd/tests/reductions.cc: Add tests for
 425         hmin and hmax. Since the compiler statically determined that all
 426         tests pass, repeat the test after a call to make_value_unknown.
 427
 428 2021-02-03  Matthias Kretz  <kretz@kde.org>
 429
 430         * testsuite/experimental/simd/tests/bits/verify.h (verify): Add
 431         instruction pointer data member. Ensure that the `if (m_failed)`
 432         branch is always inlined into the calling code. The body of the
 433         conditional can still be a function call. Move the get_ip call
 434         into the verify ctor to simplify the ctor calls.
 435         (COMPARE): Don't mention the use of all_of for reduction of a
 436         simd_mask. It only distracts from the real issue.
 437
 438 2021-02-03  Matthias Kretz  <kretz@kde.org>
 439
 440         * testsuite/experimental/simd/driver.sh: Abstract reading test
 441         options into read_src_option function. Read skip, only,
 442         expensive, and xfail via read_src_option. Add timeout and
 443         timeout-factor options and adjust timeout variable accordingly.
 444         * testsuite/experimental/simd/tests/loadstore.cc: Set
 445         timeout-factor 2.
 446
 447 2021-02-03  Matthias Kretz  <kretz@kde.org>
 448
 449         * testsuite/experimental/simd/driver.sh: When handling the pipe
 450         to log (and on verbose to stdout) count the lines. If it exceeds
 451         1000 log the issue and exit 125, which is then handled as a
 452         failure.
 453
 454 2021-02-03  Matthias Kretz  <kretz@kde.org>
 455
 456         * testsuite/experimental/simd/tests/hypot3_fma.cc: Add skip:
 457         markup for long double on powerpc64*.
 458
 459 2021-02-03  Matthias Kretz  <kretz@kde.org>
 460
 461         * include/experimental/bits/simd.h: Add __have_power10vec
 462         conditional on _ARCH_PWR10.
 463         * include/experimental/bits/simd_builtin.h: Forward declare
 464         _MaskImplPpc and use it as _MaskImpl when __ALTIVEC__ is
 465         defined.
 466         (_MaskImplBuiltin::_S_some_of): Call _S_popcount from the
 467         _SuperImpl for optimizations and correctness.
 468         * include/experimental/bits/simd_ppc.h: Add _MaskImplPpc.
 469         (_MaskImplPpc::_S_popcount): Implement via vec_cntm for POWER10.
 470         Otherwise, for >=int use -vec_sums divided by a sizeof factor.
 471         For <int use -vec_sums(vec_sum4s(...)) to sum all mask entries.
 472
 473 2021-02-03  Matthias Kretz  <kretz@kde.org>
 474
 475         * testsuite/experimental/simd/driver.sh: Remove executable on
 476         SIGINT. Process compiler and test executable output: In verbose
 477         mode print messages immediately, limited to 1000 lines and
 478         breaking long lines to below $COLUMNS (or 1024 if not set).
 479         Communicating the exit status of the compiler / test with the
 480         necessary pipe is done via a message through stdout/-in.
 481
 482 2021-02-03  Matthias Kretz  <kretz@kde.org>
 483
 484         * testsuite/Makefile.am: Ensure .simd.summary is empty before
 485         collecting a new summary.
 486         * testsuite/Makefile.in: Regenerate.
 487
 488 2021-02-03  Matthias Kretz  <kretz@kde.org>
 489
 490         * testsuite/experimental/simd/generate_makefile.sh: Use
 491         different variables internally than documented for user
 492         overrides. This makes internal append/prepend work as intended.
 493
 494 2021-02-03  Matthias Kretz  <kretz@kde.org>
 495
 496         * testsuite/experimental/simd/driver.sh (verify_test): Print
 497         test output on run xfail. Do not repeat lines from the log that
 498         were already printed on stdout.
 499         (test_selector): Make the compiler flags pattern usable as a
 500         substring selector.
 501         (toplevel): Trap on SIGINT and remove the log and sum files.
 502         Call timout with --foreground to quickly terminate on SIGINT.
 503         * testsuite/experimental/simd/generate_makefile.sh: Simplify run
 504         targets via target patterns. Default DRIVEROPTS to -v for run
 505         targets. Remove log and sum files after completion of the run
 506         target (so that it's always recompiled).
 507         Place help text into text file for reasonable 'make help'
 508         performance.
 509
 510 2021-02-03  Matthias Kretz  <kretz@kde.org>
 511
 512         * include/experimental/bits/simd.h: Remove unnecessary static
 513         assertion. Allow sizeof(8) integer __intrinsic_type to enable
 514         the necessary mask type.
 515
 516 2021-02-03  Matthias Kretz  <kretz@kde.org>
 517
 518         * include/experimental/bits/simd.h: Let __intrinsic_type<long
 519         double, N> be valid if sizeof(long double) == sizeof(double) and
 520         use a __vector double as member type.
 521
 522 2021-02-03  Matthias Kretz  <kretz@kde.org>
 523
 524         * include/experimental/bits/simd.h (__is_intrinsic_type): New
 525         internal type trait. Alias for __is_vector_type on x86.
 526         (_VectorTraitsImpl): Enable for __intrinsic_type in addition for
 527         __vector_type.
 528         (__intrin_bitcast): Allow casting to & from vector & intrinsic
 529         types.
 530         (__intrinsic_type): Explicitly specialize for NEON intrinsic
 531         vector types.
 532
 533 2021-02-03  Matthias Kretz  <kretz@kde.org>
 534
 535         * testsuite/experimental/simd/driver.sh: Implement skip, only,
 536         expensive, and xfail markers. They can select on type, ABI tag
 537         subset number, target-triplet, and compiler flags.
 538         * testsuite/experimental/simd/generate_makefile.sh: The summary
 539         now includes lines for unexpected passes and expected failures.
 540         If the skip or only markers are only conditional on the type, do
 541         not generate rules for those types.
 542         * testsuite/experimental/simd/tests/abs.cc: Mark test expensive
 543         for ABI tag subsets 1-9.
 544         * testsuite/experimental/simd/tests/algorithms.cc: Ditto.
 545         * testsuite/experimental/simd/tests/broadcast.cc: Ditto.
 546         * testsuite/experimental/simd/tests/casts.cc: Ditto.
 547         * testsuite/experimental/simd/tests/generator.cc: Ditto.
 548         * testsuite/experimental/simd/tests/integer_operators.cc: Ditto.
 549         * testsuite/experimental/simd/tests/loadstore.cc: Ditto.
 550         * testsuite/experimental/simd/tests/mask_broadcast.cc: Ditto.
 551         * testsuite/experimental/simd/tests/mask_conversions.cc: Ditto.
 552         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: Ditto.
 553         * testsuite/experimental/simd/tests/mask_loadstore.cc: Ditto.
 554         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: Ditto.
 555         * testsuite/experimental/simd/tests/mask_operators.cc: Ditto.
 556         * testsuite/experimental/simd/tests/mask_reductions.cc: Ditto.
 557         * testsuite/experimental/simd/tests/operator_cvt.cc: Ditto.
 558         * testsuite/experimental/simd/tests/operators.cc: Ditto.
 559         * testsuite/experimental/simd/tests/reductions.cc: Ditto.
 560         * testsuite/experimental/simd/tests/simd.cc: Ditto.
 561         * testsuite/experimental/simd/tests/split_concat.cc: Ditto.
 562         * testsuite/experimental/simd/tests/splits.cc: Ditto.
 563         * testsuite/experimental/simd/tests/where.cc: Ditto.
 564         * testsuite/experimental/simd/tests/fpclassify.cc: Ditto. In
 565         addition replace "test only floattypes" marker by unconditional
 566         "float|double|ldouble" only marker.
 567         * testsuite/experimental/simd/tests/frexp.cc: Ditto.
 568         * testsuite/experimental/simd/tests/hypot3_fma.cc: Ditto.
 569         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 570         Ditto.
 571         * testsuite/experimental/simd/tests/logarithm.cc: Ditto.
 572         * testsuite/experimental/simd/tests/math_1arg.cc: Ditto.
 573         * testsuite/experimental/simd/tests/math_2arg.cc: Ditto.
 574         * testsuite/experimental/simd/tests/remqo.cc: Ditto.
 575         * testsuite/experimental/simd/tests/trigonometric.cc: Ditto.
 576         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: Ditto.
 577         * testsuite/experimental/simd/tests/sincos.cc: Ditto. In
 578         addition, xfail on run because the reference data is missing.
 579
 580 2021-02-02  Jonathan Wakely  <jwakely@redhat.com>
 581
 582         * doc/xml/manual/status_cxx2011.xml: Remove stray table cell.
 583         * doc/xml/manual/status_cxx2014.xml: Likewise.
 584         * doc/xml/manual/status_cxx2017.xml: Likewise.
 585         * doc/html/manual/status.html: Regenerate.
 586
 587 2021-02-01  François Dumont  <fdumont@gcc.gnu.org>
 588
 589         PR libstdc++/70303
 590         * include/bits/stl_deque.h (std::deque<>::operator-(iterator, iterator)):
 591         Return 0 if both iterators are value-initialized.
 592         * testsuite/23_containers/deque/70303.cc: New test.
 593         * testsuite/23_containers/vector/70303.cc: New test.
 594
 595 2021-02-01  Jonathan Wakely  <jwakely@redhat.com>
 596
 597         * doc/xml/manual/status_cxx2011.xml: Update std::call_once
 598         status.
 599         * doc/xml/manual/status_cxx2014.xml: Likewise.
 600         * doc/xml/manual/status_cxx2017.xml: Likewise. Update
 601         std::from_chars and std::to_chars status. Fix formatting.
 602         * doc/html/manual/status.html: Regenerate.
 603
 604 2021-01-28  Jonathan Wakely  <jwakely@redhat.com>
 605
 606         * include/experimental/bits/numeric_traits.h: Update copyright
 607         dates.
 608         * include/experimental/bits/simd.h: Likewise.
 609         * include/experimental/bits/simd_builtin.h: Likewise.
 610         * include/experimental/bits/simd_converter.h: Likewise.
 611         * include/experimental/bits/simd_detail.h: Likewise.
 612         * include/experimental/bits/simd_fixed_size.h: Likewise.
 613         * include/experimental/bits/simd_math.h: Likewise.
 614         * include/experimental/bits/simd_neon.h: Likewise.
 615         * include/experimental/bits/simd_ppc.h: Likewise.
 616         * include/experimental/bits/simd_scalar.h: Likewise.
 617         * include/experimental/bits/simd_x86.h: Likewise.
 618         * include/experimental/bits/simd_x86_conversions.h: Likewise.
 619         * include/experimental/simd: Likewise.
 620         * testsuite/experimental/simd/*: Likewise.
 621
 622 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 623
 624         * doc/xml/manual/status_cxx2017.xml: Replace invalid entity.
 625         * doc/html/*: Regenerate.
 626
 627 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 628
 629         * testsuite/experimental/simd/generate_makefile.sh: Use printf
 630         instead of echo when printing escape characters.
 631
 632 2021-01-27  Matthias Kretz  <kretz@kde.org>
 633
 634         * scripts/check_simd: New file. This script is called from the
 635         the check-simd target. It determines a set of compiler flags and
 636         simulator setups for calling generate_makefile.sh and passes the
 637         information back to the check-simd target, which recurses to the
 638         generated Makefiles.
 639         * scripts/create_testsuite_files: Remove files below simd/tests/
 640         from testsuite_files and place them in testsuite_files_simd.
 641         * testsuite/Makefile.am: Add testsuite_files_simd. Add
 642         check-simd target.
 643         * testsuite/Makefile.in: Regenerate.
 644         * testsuite/experimental/simd/driver.sh: New file. This script
 645         compiles and runs a given simd test, logging its output and
 646         status. It uses the timeout command to implement compile and
 647         test timeouts.
 648         * testsuite/experimental/simd/generate_makefile.sh: New file.
 649         This script generates a Makefile which uses driver.sh to compile
 650         and run the tests and collect the logs into a single log file.
 651         * testsuite/experimental/simd/tests/abs.cc: New file. Tests
 652         abs(simd).
 653         * testsuite/experimental/simd/tests/algorithms.cc: New file.
 654         Tests min/max(simd, simd).
 655         * testsuite/experimental/simd/tests/bits/conversions.h: New
 656         file. Contains functions to support tests involving conversions.
 657         * testsuite/experimental/simd/tests/bits/make_vec.h: New file.
 658         Support functions make_mask and make_vec.
 659         * testsuite/experimental/simd/tests/bits/mathreference.h: New
 660         file. Support functions to supply precomputed math function
 661         reference data.
 662         * testsuite/experimental/simd/tests/bits/metahelpers.h: New
 663         file. Support code for SFINAE testing.
 664         * testsuite/experimental/simd/tests/bits/simd_view.h: New file.
 665         * testsuite/experimental/simd/tests/bits/test_values.h: New
 666         file. Test functions to easily drive a test with simd objects
 667         initialized from a given list of values and a range of random
 668         values.
 669         * testsuite/experimental/simd/tests/bits/ulp.h: New file.
 670         Support code to determine the ULP distance of simd objects.
 671         * testsuite/experimental/simd/tests/bits/verify.h: New file.
 672         Test framework for COMPARE'ing simd objects and instantiating
 673         the test templates with value_type and ABI tag.
 674         * testsuite/experimental/simd/tests/broadcast.cc: New file. Test
 675         simd broadcasts.
 676         * testsuite/experimental/simd/tests/casts.cc: New file. Test
 677         simd casts.
 678         * testsuite/experimental/simd/tests/fpclassify.cc: New file.
 679         Test floating-point classification functions.
 680         * testsuite/experimental/simd/tests/frexp.cc: New file. Test
 681         frexp(simd).
 682         * testsuite/experimental/simd/tests/generator.cc: New file. Test
 683         simd generator constructor.
 684         * testsuite/experimental/simd/tests/hypot3_fma.cc: New file.
 685         Test 3-arg hypot(simd,simd,simd) and fma(simd,simd,sim).
 686         * testsuite/experimental/simd/tests/integer_operators.cc: New
 687         file. Test integer operators.
 688         * testsuite/experimental/simd/tests/ldexp_scalbn_scalbln_modf.cc:
 689         New file. Test ldexp(simd), scalbn(simd), scalbln(simd), and
 690         modf(simd).
 691         * testsuite/experimental/simd/tests/loadstore.cc: New file. Test
 692         (converting) simd loads and stores.
 693         * testsuite/experimental/simd/tests/logarithm.cc: New file. Test
 694         log*(simd).
 695         * testsuite/experimental/simd/tests/mask_broadcast.cc: New file.
 696         Test simd_mask broadcasts.
 697         * testsuite/experimental/simd/tests/mask_conversions.cc: New
 698         file. Test simd_mask conversions.
 699         * testsuite/experimental/simd/tests/mask_implicit_cvt.cc: New
 700         file. Test simd_mask implicit conversions.
 701         * testsuite/experimental/simd/tests/mask_loadstore.cc: New file.
 702         Test simd_mask loads and stores.
 703         * testsuite/experimental/simd/tests/mask_operator_cvt.cc: New
 704         file. Test simd_mask operators convert as specified.
 705         * testsuite/experimental/simd/tests/mask_operators.cc: New file.
 706         Test simd_mask compares, subscripts, and negation.
 707         * testsuite/experimental/simd/tests/mask_reductions.cc: New
 708         file. Test simd_mask reductions.
 709         * testsuite/experimental/simd/tests/math_1arg.cc: New file. Test
 710         1-arg math functions on simd.
 711         * testsuite/experimental/simd/tests/math_2arg.cc: New file. Test
 712         2-arg math functions on simd.
 713         * testsuite/experimental/simd/tests/operator_cvt.cc: New file.
 714         Test implicit conversions on simd binary operators behave as
 715         specified.
 716         * testsuite/experimental/simd/tests/operators.cc: New file. Test
 717         simd compares, subscripts, not, unary minus, plus, minus,
 718         multiplies, divides, increment, and decrement.
 719         * testsuite/experimental/simd/tests/reductions.cc: New file.
 720         Test reduce(simd).
 721         * testsuite/experimental/simd/tests/remqo.cc: New file. Test
 722         remqo(simd).
 723         * testsuite/experimental/simd/tests/simd.cc: New file. Basic
 724         sanity checks of simd types.
 725         * testsuite/experimental/simd/tests/sincos.cc: New file. Test
 726         sin(simd) and cos(simd).
 727         * testsuite/experimental/simd/tests/split_concat.cc: New file.
 728         Test split(simd) and concat(simd, simd).
 729         * testsuite/experimental/simd/tests/splits.cc: New file. Test
 730         split(simd_mask).
 731         * testsuite/experimental/simd/tests/trigonometric.cc: New file.
 732         Test remaining trigonometric functions on simd.
 733         * testsuite/experimental/simd/tests/trunc_ceil_floor.cc: New
 734         file. Test trunc(simd), ceil(simd), and floor(simd).
 735         * testsuite/experimental/simd/tests/where.cc: New file. Test
 736         masked operations using where.
 737
 738 2021-01-27  Matthias Kretz  <kretz@kde.org>
 739
 740         * doc/xml/manual/status_cxx2017.xml: Add implementation status
 741         of the Parallelism TS 2. Document implementation-defined types
 742         and behavior.
 743         * include/Makefile.am: Add new headers.
 744         * include/Makefile.in: Regenerate.
 745         * include/experimental/simd: New file. New header for
 746         Parallelism TS 2.
 747         * include/experimental/bits/numeric_traits.h: New file.
 748         Implementation of P1841R1 using internal naming. Addition of
 749         missing IEC559 functionality query.
 750         * include/experimental/bits/simd.h: New file. Definition of the
 751         public simd interfaces and general implementation helpers.
 752         * include/experimental/bits/simd_builtin.h: New file.
 753         Implementation of the _VecBuiltin simd_abi.
 754         * include/experimental/bits/simd_converter.h: New file. Generic
 755         simd conversions.
 756         * include/experimental/bits/simd_detail.h: New file. Internal
 757         macros for the simd implementation.
 758         * include/experimental/bits/simd_fixed_size.h: New file. Simd
 759         fixed_size ABI specific implementations.
 760         * include/experimental/bits/simd_math.h: New file. Math
 761         overloads for simd.
 762         * include/experimental/bits/simd_neon.h: New file. Simd NEON
 763         specific implementations.
 764         * include/experimental/bits/simd_ppc.h: New file. Implement bit
 765         shifts to avoid invalid results for integral types smaller than
 766         int.
 767         * include/experimental/bits/simd_scalar.h: New file. Simd scalar
 768         ABI specific implementations.
 769         * include/experimental/bits/simd_x86.h: New file. Simd x86
 770         specific implementations.
 771         * include/experimental/bits/simd_x86_conversions.h: New file.
 772         x86 specific conversion optimizations. The conversion patterns
 773         work around missing conversion patterns in the compiler and
 774         should be removed as soon as PR85048 is resolved.
 775         * testsuite/experimental/simd/standard_abi_usable.cc: New file.
 776         Test that all (not all fixed_size<N>, though) standard simd and
 777         simd_mask types are usable.
 778         * testsuite/experimental/simd/standard_abi_usable_2.cc: New
 779         file. As above but with -ffast-math.
 780         * testsuite/libstdc++-dg/conformance.exp: Don't build simd tests
 781         from the standard test loop. Instead use
 782         check_vect_support_and_set_flags to build simd tests with the
 783         relevant machine flags.
 784
 785 2021-01-27  Jonathan Wakely  <jwakely@redhat.com>
 786
 787         PR libstdc++/66414
 788         * include/bits/string_view.tcc
 789         (basic_string_view::find(const CharT*, size_type, size_type)):
 790         Optimize.
 791
 792 2021-01-27  Paul Fee  <paul.f.fee@gmail.com>
 793
 794         * include/bits/basic_string.h (basic_string::contains): New
 795         member functions.
 796         * include/std/string_view (basic_string_view::contains):
 797         Likewise.
 798         * include/std/version (__cpp_lib_string_contains): Define.
 799         * testsuite/21_strings/basic_string/operations/starts_with/char/1.cc:
 800         Remove trailing whitespace.
 801         * testsuite/21_strings/basic_string/operations/starts_with/wchar_t/1.cc:
 802         Likewise.
 803         * testsuite/21_strings/basic_string/operations/contains/char/1.cc: New test.
 804         * testsuite/21_strings/basic_string/operations/contains/wchar_t/1.cc: New test.
 805         * testsuite/21_strings/basic_string_view/operations/contains/char/1.cc: New test.
 806         * testsuite/21_strings/basic_string_view/operations/contains/char/2.cc: New test.
 807         * testsuite/21_strings/basic_string_view/operations/contains/wchar_t/1.cc: New test.
 808
 809 2021-01-21  Jonathan Wakely  <jwakely@redhat.com>
 810
 811         * src/c++17/Makefile.in: Regenerate.
 812
 813 2021-01-20  David Edelsohn  <dje.gcc@gmail.com>
 814
 815         * config/os/aix/ctype_inline.h (bool ctype<char>:: is): Cast
 816         _OBJ_DATA subscript to unsigned char. Add _THREAD_SAFE access to
 817         __lc_type.
 818         (const char* ctype<char>:: is): Same.
 819
 820 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 821
 822         PR libstdc++/98725
 823         * testsuite/20_util/unique_ptr/io/lwg2948.cc:  Do not try to
 824         write to a wide character stream if wide character support is
 825         disabled in the library.
 826
 827 2021-01-18  Jonathan Wakely  <jwakely@redhat.com>
 828
 829         * testsuite/27_io/basic_stringstream/cons/char/1.cc: Use
 830         stringbuf not wstringbuf.
 831
 832 2021-01-18  Jakub Jelinek  <jakub@redhat.com>
 833
 834         PR debug/98708
 835         * src/c++11/Makefile.am (cxx11-ios_failure-lt.s, cxx11-ios_failure.s):
 836         Compile with -gno-as-loc-support.
 837         * src/c++11/Makefile.in: Regenerated.
 838
 839 2021-01-16  H.J. Lu  <hjl.tools@gmail.com>
 840
 841         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc:
 842         Add -fcf-protection=none to -march=i486.
 843
 844 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 845
 846         * testsuite/23_containers/deque/debug/98466.cc: Make it pre-C++11
 847         compliant.
 848
 849 2021-01-14  Alexandre Oliva  <oliva@adacore.com>
 850
 851         * testsuite/30_threads/future/members/poll.cc: Calibrate
 852         iteration count.
 853
 854 2021-01-14  François Dumont  <fdumont@gcc.gnu.org>
 855
 856         PR libstdc++/98466
 857         * include/bits/hashtable_policy.h (_Node_iterator_base()): Set _M_cur to nullptr.
 858         (_Node_iterator()): Make default.
 859         (_Node_const_iterator()): Make default.
 860         * include/debug/macros.h (__glibcxx_check_erae_range_after): Add _M_singular
 861         iterator checks.
 862         * include/debug/safe_iterator.h
 863         (_GLIBCXX_DEBUG_VERIFY_OPERANDS): Accept if both iterator are value initialized.
 864         * include/debug/safe_local_iterator.h (_GLIBCXX_DEBUG_VERIFY_OPERANDS):
 865         Likewise.
 866         * include/debug/safe_iterator.tcc (_Safe_iterator<>::_M_valid_range): Add
 867         _M_singular checks on input iterators.
 868         * src/c++11/debug.cc (_Safe_iterator_base::_M_can_compare): Remove _M_singular
 869         checks.
 870         * testsuite/23_containers/deque/debug/98466.cc: New test.
 871         * testsuite/23_containers/unordered_map/debug/98466.cc: New test.
 872
 873 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 874
 875         PR libstdc++/98471
 876         * include/bits/fs_path.h (__throw_conversion_error): New
 877         function to throw or abort on character conversion errors.
 878         (__wstr_from_utf8): Move definition after filesystem_error has
 879         been defined. Use __throw_conversion_error.
 880         (path::_S_convert<_EcharT>): Use __throw_conversion_error.
 881         (path::_S_str_convert<_CharT, _Traits, _Allocator>): Likewise.
 882         (path::u8string): Likewise.
 883
 884 2021-01-14  Jonathan Wakely  <jwakely@redhat.com>
 885
 886         * include/std/barrier: Update copyright years. Fix whitespace.
 887         * include/std/version: Fix whitespace.
 888         * testsuite/30_threads/barrier/1.cc: Update copyright years.
 889         * testsuite/30_threads/barrier/2.cc: Likewise.
 890         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 891         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 892         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 893         * testsuite/30_threads/barrier/completion.cc: Likewise.
 894
 895 2021-01-13  Jonathan Wakely  <jwakely@redhat.com>
 896
 897         * doc/doxygen/user.cfg.in (INPUT): Remove include/debug/array.
 898
 899 2021-01-10  David Edelsohn  <dje.gcc@gmail.com>
 900
 901         PR libstdc++/98613
 902         * testsuite/ext/vstring/cons/moveable.cc: Suppress false positive
 903         warning.
 904         * testsuite/ext/vstring/modifiers/assign/move_assign.cc: Same.
 905
 906 2021-01-08  Olivier Hainque  <hainque@adacore.com>
 907
 908         * testsuite/20_util/bind/ref_neg.cc: Tweak the
 909         dg-prune-output regex for out-of-build-tree contexts.
 910
 911 2021-01-07  Thomas Rodgers  <trodgers@redhat.com>
 912
 913         * doc/doxygen/user.cfg.in: Add new header.
 914         * include/Makefile.am (std_headers): likewise.
 915         * include/Makefile.in: Regenerate.
 916         * include/precompiled/stdc++.h: Add new header.
 917         * include/std/barrier: New file.
 918         * include/std/version: Add __cpp_lib_barrier feature test macro.
 919         * testsuite/30_threads/barrier/1.cc: New test.
 920         * testsuite/30_threads/barrier/2.cc: Likewise.
 921         * testsuite/30_threads/barrier/arrive_and_drop.cc: Likewise.
 922         * testsuite/30_threads/barrier/arrive_and_wait.cc: Likewise.
 923         * testsuite/30_threads/barrier/arrive.cc: Likewise.
 924         * testsuite/30_threads/barrier/completion.cc: Likewise.
 925
 926 2021-01-07  Patrick Palka  <ppalka@redhat.com>
 927
 928         PR libstdc++/98384
 929         * testsuite/20_util/to_chars/long_double.cc: Use nexttowardl
 930         instead of the non-standard nextupl and nextdownl.
 931
 932 2021-01-05  Samuel Thibault  <samuel.thibault@ens-lyon.org>
 933
 934         * configure: Re-generate.
 935
 936 2021-01-05  Ed Smith-Rowland  <3dw4rd@verizon.net>
 937
 938         * include/precompiled/stdc++.h: Add <source_location> to C++20 section.
 939
 940 2021-01-01  Jakub Jelinek  <jakub@redhat.com>
 941
 942         * ChangeLog-2020: Rotate ChangeLog.  New file.
 943
 944 \f
 945 Copyright (C) 2021 Free Software Foundation, Inc.
 946
 947 Copying and distribution of this file, with or without modification,
 948 are permitted in any medium without royalty provided the copyright
 949 notice and this notice are preserved.