libstdc++-v3/ChangeLog-2019

   1 2019-12-30  Corentin Gay  <gay@adacore.com>
   2
   3         * acinclude.m4 (vxworks*): New entry. Set ac_has_nanosleep=yes.
   4         * configure: Regenerate.
   5
   6 2019-12-30  Jerome Lambourg  <lambourg@adacore.com>
   7             Olivier Hainque  <hainque@adacore.com>
   8
   9         * config/os/vxworks/os_defines.h
  10         (NOMINMAX): Always redefine to 1.
  11         (_NO_CPP_INLINES): Likewise.
  12         (_GLIBCXX_USE_WEAK_REF): Define to 1 for RTP on
  13         VxWorks >= 7, to 0 otherwise.
  14         (_GLIBCXX_HAVE_TLS): Define to 1.
  15         For VxWorks >= 7:
  16         (_GLIBCXX_USE_C99_MATH): Define to 1.
  17         (_GLIBCXX_USE_C99_MATH_FP_MACROS_DYNAMIC): Define to 0.
  18         (_HAS_TR1_DECLARATIONS): Redefine to 0.
  19         For VxWorks < 7, RTP:
  20         (_GLIBCXX_INCLUDE_NEXT_C_HEADERS): Define to 1.
  21         (_GLIBCXX_USE_C99_FP_MACROS_DYNAMIC): Redefine to 1.
  22         (__CORRECT_ISO_CPP11_MATH_H_PROTO_FP): Define.
  23         For VxWorks < 7, kernel: #include <vxWorks.h>
  24
  25 2019-12-25  Alexandre Oliva <oliva@adacore.com>
  26
  27         * crossconfig.m4 (GLIBCXX_CROSSCONFIG) [*-vxworks*]: Define
  28         long double functions as available if declared by math.h.
  29         (GLIBCXX_CHECK_MATH_DECL, GLIBCXX_CHECK_MATH_DECLS): New.
  30         * configure: Rebuild.
  31
  32 2019-12-20  Jonathan Wakely  <jwakely@redhat.com>
  33
  34         PR libstdc++/92927
  35         * include/bits/alloc_traits.h (__alloc_on_copy, __alloc_on_move)
  36         (__alloc_on_swap): Add inline specifier.
  37
  38 2019-12-20  Jerome Lambourg  <lambourg@adacore.com>
  39
  40         * acinclude.m4 (GLIBCXX_CHECK_SETRLIMIT): Test with AC_LANG_CPLUSPLUS.
  41         * configure: Regenerate.
  42
  43 2019-12-20  François Dumont  <fdumont@gcc.gnu.org>
  44
  45         * testsuite/23_containers/map/48101_neg.cc: Add versioned namespace
  46         pattern to tested error message.
  47         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
  48         * testsuite/30_threads/headers/stop_token/synopsis.cc: Add
  49         dg-require-normal-namepace.
  50
  51         * python/libstdcxx/v6/printers.py (lookup_node_type): Remove redundant
  52         call to lookup_node_type.
  53         * testsuite/libstdc++-prettyprinters/80276.cc: Define
  54         _GLIBCXX_USE_CXX11_ABI to 0.
  55         * testsuite/libstdc++-prettyprinters/91997.cc: Use regexp-test to check
  56         'a' content.
  57
  58 2019-12-20  Jerome Lambourg  <lambourg@adacore.com>
  59
  60         * acinclude.m4 (_GLIBCXX_USE_PTHREAD_RWLOCK_T): Checks that _PTHREADS
  61         is defined after including gthr.h.
  62         * configure: Regenerate.
  63
  64 2019-12-12  Jonathan Wakely  <jwakely@redhat.com>
  65
  66         * libsupc++/compare (common_comparison_category): Define without using
  67         concepts and optimise for compilation time.
  68         (__detail::__cmp_cat_ids): Remove.
  69         (__detail::__common_cmp_cat): Replace class template and
  70         specializations with constexpr function.
  71
  72 2019-12-12  François Dumont  <fdumont@gcc.gnu.org>
  73
  74         * include/tr1/cctype: Add _GLIBCXX_BEGIN_VERSION_NAMESPACE and
  75         _GLIBCXX_END_VERSION_NAMESPACE.
  76         * include/tr1/cfenv: Likewise.
  77         * include/tr1/cinttypes: Likewise.
  78         * include/tr1/cstdint: Likewise.
  79         * include/tr1/cstdio: Likewise.
  80         * include/tr1/cstdlib: Likewise.
  81         * include/tr1/cwchar: Likewise.
  82         * include/tr1/cwctype: Likewise.
  83
  84         * src/c++11/random.cc: Include <cctype>.
  85         (random_devise::_M_init_pretr1): Qualify isdigit call.
  86
  87 2019-12-10  Thomas Rodgers  <trodgers@redhat.com>
  88
  89         * include/pstl/glue_numeric_defs.h: Restore enable_if lost during
  90         original import of pstl.
  91         * include/pstl/glue_numeric_impl.h: Likewise.
  92
  93 2019-12-10  Jonathan Wakely  <jwakely@redhat.com>
  94
  95         (span(ContiguousIterator, Sentinel)): Add conditional noexcept.
  96         * include/std/span (span(ContiguousIterator, size_type)): Change
  97         noexcept to be unconditionally true.
  98         * testsuite/23_containers/span/nothrow_cons.cc: New test.
  99
 100 2019-12-10  François Dumont  <fdumont@gcc.gnu.org>
 101
 102         * include/bits/stl_algobase.h
 103         (__copy_move_a1<>(_II, _II, _OI)): New.
 104         (__copy_move_a1<>(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
 105         (__copy_move_a1<>(_Deque_iterator<>, _Deque_iterator<>,
 106         _Deque_iterator<>)): New.
 107         (__copy_move_a1<>(_II, _II, _Deque_iterator<>)): New.
 108         (__copy_move_a<>(_II, _II, _OI)): Adapt, call __copy_move_a1<>.
 109         (__copy_move_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
 110         _OI)): New.
 111         (__copy_move_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
 112          const _Safe_iterator<>&)): New.
 113         (__copy_move_a<>(_II, _II, const _Safe_iterator<>&)): New.
 114         (copy, move): Adapt, call __copy_move_a.
 115         (__copy_move_backward_a1<>(_II, _II, _OI)): New,
 116         call __copy_move_backward_a2.
 117         (__copy_move_backward_a1<>(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
 118         (__copy_move_backward_a1<>(_Deque_iterator<>, _Deque_iterator<>,
 119         _Deque_iterator<>)): New.
 120         (__copy_move_backward_a1<>(_II, _II, _Deque_iterator<>)): New.
 121         (__copy_move_backward_a<>(_II, _II, _OI)): Adapt, call
 122         __copy_move_backward_a1<>.
 123         (__copy_move_backward_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
 124         _OI)): New.
 125         (__copy_move_backward_a<>(const _Safe_iterator<>&, const _Safe_iterator<>&,
 126          const _Safe_iterator<>&)): New.
 127         (__copy_move_backward_a<>(_II, _II, const _Safe_iterator<>&)): New.
 128         (copy_backward, move_backward): Adapt, call __copy_move_backward_a<>.
 129         (__fill_a): Rename into...
 130         (__fill_a1): ... this.
 131         (__fill_a1(__normal_iterator<>, __normal_iterator<>, const _Tp&)): New.
 132         (__fill_a1(const _Deque_iterator<>&, const _Deque_iterator<>&, _VTp)):
 133         New.
 134         (__fill_a(_FIte, _FIte, const _Tp&)): New, call __fill_a1.
 135         (__fill_a(const _Safe_iterator<>&, const _Safe_iterator<>&,
 136         const _Tp&)): New.
 137         (fill): Adapt, remove __niter_base usage.
 138         (__fill_n_a): Rename into...
 139         (__fill_n_a1): ...this.
 140         (__fill_n_a(const _Safe_iterator<>&, _Size, const _Tp&,
 141         input_iterator_tag)): New.
 142         (__fill_n_a(_OI, _Size, const _Tp&, output_iterator_tag)): New, call
 143         __fill_n_a1.
 144         (__fill_n_a(_OI, _Size, const _Tp&, random_access_iterator_tag)): New,
 145         call __fill_a.
 146         (__equal_aux): Rename into...
 147         (__equal_aux1): ...this.
 148         (__equal_aux1(_Deque_iterator<>, _Deque_iterator<>, _OI)): New.
 149         (__equal_aux1(_Deque_iterator<>, _Deque_iterator<>,
 150         _Deque_iterator<>)): New.
 151         (__equal_aux1(_II, _II, _Deque_iterator<>)): New.
 152         (__equal_aux(_II1, _II1, _II2)): New, call __equal_aux1.
 153         (__equal_aux(const _Safe_iterator<>&, const _Safe_iterator<>&,
 154         _OI)): New.
 155         (__equal_aux(const _Safe_iterator<>&, const _Safe_iterator<>&,
 156          const _Safe_iterator<>&)): New.
 157         (__equal_aux(_II, _II, const _Safe_iterator<>&)): New.
 158         (equal(_II1, _II1, _II2)): Adapt.
 159         * include/bits/stl_deque.h
 160         (fill, copy, copy_backward, move, move_backward): Remove.
 161         * include/bits/deque.tcc: Include <bits/stl_algobase.h>.
 162         (__fill_a1): New.
 163         (__copy_move_dit): New.
 164         (__copy_move_a1): New, use latter.
 165         (__copy_move_a1(_II, _II, _Deque_iterator<>)): New.
 166         (__copy_move_backward_dit): New.
 167         (__copy_move_backward_a1): New, use latter.
 168         (__copy_move_backward_a1(_II, _II, _Deque_iterator<>)): New.
 169         (__equal_dit): New.
 170         (__equal_aux1): New, use latter.
 171         (__equal_aux1(_II, _II, _Deque_iterator<>)): New.
 172         * include/std/numeric (__is_random_access_iter): Move...
 173         * include/bits/stl_iterator_base_types.h (__is_random_access_iter): ...
 174         here. Provide pre-C++11 definition.
 175         * include/debug/debug.h (_Safe_iterator<>): New declaration.
 176         * include/debug/safe_iterator.h (_Safe_iterator<>::_M_can_advance): Add
 177         __strict parameter.
 178         * include/debug/safe_iterator.tcc: Include <bits/stl_algobase.h>.
 179         (_Safe_iterator<>::_M_can_advance): Adapt.
 180         (std::__copy_move_a, std::__copy_move_backward_a, __fill_a): New.
 181         (__fill_n_a, __equal_aux): New.
 182         * include/debug/stl_iterator.h (__niter_base): Remove.
 183         * include/debug/vector (__niter_base): Remove.
 184         * testsuite/performance/25_algorithms/copy_backward_deque_iterators.cc:
 185         Include <vector> and <list>. Add benches.
 186         * testsuite/performance/25_algorithms/copy_deque_iterators.cc: Likewise.
 187         * testsuite/performance/25_algorithms/equal_deque_iterators.cc: Likewise.
 188         * testsuite/25_algorithms/copy/debug/1_neg.cc: New.
 189         * testsuite/25_algorithms/copy/deque_iterators/2.cc: New.
 190         * testsuite/25_algorithms/copy/deque_iterators/31.cc: New.
 191         * testsuite/25_algorithms/copy/deque_iterators/32.cc: New.
 192         * testsuite/25_algorithms/copy/deque_iterators/33.cc: New.
 193         * testsuite/25_algorithms/copy/deque_iterators/41.cc: New.
 194         * testsuite/25_algorithms/copy/deque_iterators/42.cc: New.
 195         * testsuite/25_algorithms/copy/deque_iterators/43.cc: New.
 196         * testsuite/25_algorithms/copy/streambuf_iterators/char/4.cc (test02):
 197         New.
 198         * testsuite/25_algorithms/copy_backward/deque_iterators/2.cc: New.
 199         * testsuite/25_algorithms/equal/deque_iterators/1.cc: New.
 200         * testsuite/25_algorithms/fill/deque_iterators/1.cc: New.
 201         * testsuite/25_algorithms/move/deque_iterators/2.cc: New.
 202         * testsuite/25_algorithms/move_backward/deque_iterators/2.cc: New.
 203
 204 2019-12-10  Jonathan Wakely  <jwakely@redhat.com>
 205
 206         PR libstdc++/92886
 207         * include/bits/ios_base.h (std::ios_base::trunc): Fix comment.
 208
 209         * include/std/complex (__cpp_lib_constexpr_complex): Define.
 210         * include/std/version (__cpp_lib_constexpr_complex): Likewise.
 211         * testsuite/26_numerics/complex/1.cc: New test.
 212         * testsuite/26_numerics/complex/2.cc: New test.
 213
 214         * include/std/span: Do not include <tuple> and <utility>.
 215         (tuple_size, tuple_element): Declare.
 216
 217         * include/bits/iterator_concepts.h (indirect_result_t): Do not apply
 218         iter_reference_t to parameter pack.
 219         * testsuite/24_iterators/indirect_callable/projected.cc: New test.
 220
 221 2019-12-09  Jonathan Wakely  <jwakely@redhat.com>
 222
 223         * include/bits/range_access.h (ranges::enable_safe_range): Define.
 224         (ranges::begin, ranges::end, ranges::rbegin, ranges::rend): Constrain
 225         to only accept types satisfying safe_range and treat argument as an
 226         lvalue when calling a member of performing ADL.
 227         (ranges::__detail::__range_impl, ranges::__detail::__forwarding_range):
 228         Remove.
 229         (ranges::range): Adjust definition.
 230         (ranges::safe_range): Define.
 231         (ranges::iterator_t, ranges::range_difference_t): Reorder definitions
 232         to match the synopsis in the working draft.
 233         (ranges::disable_sized_range): Remove duplicate definition.
 234         * include/experimental/string_view (ranges::enable_safe_range): Add
 235         partial specialization for std::experimental::basic_string_view.
 236         * include/std/ranges (ranges::viewable_range, ranges::subrange)
 237         (ranges::empty_view, ranges::iota_view): Use safe_range. Specialize
 238         enable_safe_range.
 239         (ranges::safe_iterator_t, ranges::safe_subrange_t): Define.
 240         * include/std/span (ranges::enable_safe_range): Add partial
 241         specialization for std::span.
 242         * include/std/string_view (ranges::enable_safe_range): Likewise for
 243         std::basic_string_view.
 244         * testsuite/std/ranges/access/begin.cc: Adjust expected results.
 245         * testsuite/std/ranges/access/cbegin.cc: Likewise.
 246         * testsuite/std/ranges/access/cdata.cc: Likewise.
 247         * testsuite/std/ranges/access/cend.cc: Likewise.
 248         * testsuite/std/ranges/access/crbegin.cc: Likewise.
 249         * testsuite/std/ranges/access/crend.cc: Likewise.
 250         * testsuite/std/ranges/access/data.cc: Likewise.
 251         * testsuite/std/ranges/access/end.cc: Likewise.
 252         * testsuite/std/ranges/access/rbegin.cc: Likewise.
 253         * testsuite/std/ranges/access/rend.cc: Likewise.
 254         * testsuite/std/ranges/empty_view.cc: Test ranges::begin and
 255         ranges::end instead of unqualified calls to begin and end.
 256         * testsuite/std/ranges/safe_range.cc: New test.
 257         * testsuite/std/ranges/safe_range_types.cc: New test.
 258         * testsuite/util/testsuite_iterators.h: Add comment about safe_range.
 259
 260         * testsuite/27_io/filesystem/path/concat/strings.cc: Test more cases.
 261
 262         PR libstdc++/92853
 263         * src/c++17/fs_path.cc (filesystem::path::operator+=(const path&)):
 264         Do not process a trailing directory separator twice.
 265         * testsuite/27_io/filesystem/path/concat/92853.cc: New test.
 266         * testsuite/27_io/filesystem/path/concat/path.cc: Test more cases.
 267
 268 2019-12-09  François Dumont  <fdumont@gcc.gnu.org>
 269
 270         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
 271         Fix static_assert line number.
 272         * testsuite/23_containers/array/tuple_interface/
 273         tuple_element_debug_neg.cc: Likewise.
 274
 275 2019-12-07  Andrew Pinski  <apinski@marvell.com>
 276
 277         * config/cpu/aarch64/opt/ext/opt_random.h: Wrap around with check
 278         for little-endian like ext/random is done.
 279
 280 2019-12-05  Jonathan Wakely  <jwakely@redhat.com>
 281
 282         * testsuite/23_containers/span/lwg3255.cc: Fix test. Constructing a
 283         span of non-const elements should not be possible from a const array
 284         or an array of const elements.
 285
 286 2019-12-05  JeanHeyd "ThePhD" Meneide  <phdofthehouse@gmail.com>
 287
 288         Implement P1872R0 and P1394R0 for std::span
 289         * include/bits/range_access.h (__adl_begin, __adl_end): Remove.
 290         (sentinel_t, range_value_t, range_reference_t)
 291         (range_rvalue_reference_t, __forwarding_range, disable_sized_range)
 292         (output_range, input_range, forward_range, bidirectional_range)
 293         (random_access_range, contiguous_range, common_range): Move here from
 294         <ranges>, to make this the "ranges lite" internal header.
 295         * include/std/ranges: Move basic aliases and concepts to
 296         <bits/range_access.h>.
 297         * include/std/span: Use concepts and ranges:: calls instead of
 298         enable_if and friends.
 299         * include/std/type_traits: Add __is_array_convertible trait.
 300
 301 2019-12-05  Jonathan Wakely  <jwakely@redhat.com>
 302
 303         * include/bits/stl_algobase.h (lexicographical_compare_three_way):
 304         Define for C++20.
 305         * testsuite/25_algorithms/lexicographical_compare_three_way/1.cc: New
 306         test.
 307         * testsuite/25_algorithms/lexicographical_compare_three_way/
 308         constexpr.cc: New test.
 309
 310         * python/libstdcxx/v6/printers.py (StdCmpCatPrinter): New printer.
 311         * testsuite/libstdc++-prettyprinters/cxx20.cc: New test.
 312
 313         * include/bits/cpp_type_traits.h (__is_byte<char8_t>): Add
 314         specialization.
 315         * include/std/array (operator<=>): Likewise.
 316         * testsuite/23_containers/array/comparison_operators/constexpr.cc:
 317         Test three-way comparisons and arrays of unsigned char.
 318         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust
 319         dg-error line numbers.
 320
 321 2019-12-03  Jonathan Wakely  <jwakely@redhat.com>
 322
 323         * include/bits/stl_pair.h [__cpp_lib_three_way_comparison]
 324         (operator<=>): Define for C++20.
 325         * libsupc++/compare (__cmp2way_res_t): Rename to __cmp3way_res_t,
 326         move into __detail namespace. Do not turn argument types into lvalues.
 327         (__cmp3way_helper): Rename to __cmp3way_res_impl, move into __detail
 328         namespace. Constrain with concepts instead of using void_t.
 329         (compare_three_way_result): Adjust name of base class.
 330         (compare_three_way_result_t): Use __cmp3way_res_impl directly.
 331         (__detail::__3way_cmp_with): Add workaround for PR 91073.
 332         (compare_three_way): Use workaround.
 333         (__detail::__synth3way, __detail::__synth3way_t): Define new helpers
 334         implementing synth-three-way and synth-three-way-result semantics.
 335         * testsuite/20_util/pair/comparison_operators/constexpr_c++20.cc: New
 336         test.
 337
 338         * include/bits/stl_pair.h (pair): Remove stray Doxygen closing marker.
 339
 340         * testsuite/util/slow_clock.h: Fix copyright date.
 341
 342 2019-12-02  Mike Crowe  <mac@mcrowe.com>
 343
 344         Fix try_lock_until and try_lock_shared_until on arbitrary clock
 345         * include/std/shared_mutex (shared_timed_mutex::try_lock_until)
 346         (shared_timed_mutex::try_lock_shared_until): Loop until the absolute
 347         timeout time is reached as measured against the appropriate clock.
 348         * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
 349         file. Test try_lock_until and try_lock_shared_until timeouts against
 350         various clocks.
 351         * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
 352         file. Test try_lock_until and try_lock_shared_until timeouts against
 353         various clocks.
 354
 355         Add full steady_clock support to shared_timed_mutex
 356         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_RWLOCK_CLOCKLOCK): Define
 357         to check for the presence of both pthread_rwlock_clockrdlock and
 358         pthread_rwlock_clockwrlock.
 359         * config.h.in: Regenerate.
 360         * configure.ac: Call GLIBCXX_USE_PTHREAD_RWLOCK_CLOCKLOCK.
 361         * configure: Regenerate.
 362         * include/std/shared_mutex (shared_timed_mutex): Define __clock_t as
 363         the best clock to use for relative waits.
 364         (shared_timed_mutex::try_lock_for) Round up wait duration if necessary.
 365         (shared_timed_mutex::try_lock_shared_for): Likewise.
 366         (shared_timed_mutex::try_lock_until): Use existing try_lock_until
 367         implementation for system_clock (which matches __clock_t when
 368         _GLIBCCXX_USE_PTHREAD_RWLOCK_CLOCKLOCK is not defined). Add new
 369         overload for steady_clock that uses pthread_rwlock_clockwrlock if it
 370         is available. Simplify overload for non-standard clock to just call
 371         try_lock_for with a relative timeout.
 372         (shared_timed_mutex::try_lock_shared_until): Likewise.
 373
 374         PR libstdc++/91906 Fix timed_mutex::try_lock_until on arbitrary clock
 375         * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Loop
 376         until the absolute timeout time is reached as measured against the
 377         appropriate clock.
 378         * testsuite/util/slow_clock.h: New file. Move implementation of
 379         slow_clock test class.
 380         * testsuite/30_threads/condition_variable/members/2.cc: Include
 381         slow_clock from header.
 382         * testsuite/30_threads/shared_timed_mutex/try_lock/3.cc: Convert
 383         existing test to templated function so that it can be called with
 384         both system_clock and steady_clock.
 385         * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Also run test
 386         using slow_clock to test above fix.
 387         * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
 388         Likewise.
 389         * testsuite/30_threads/recursive_timed_mutex/try_lock_until/4.cc: Add
 390         new test that try_lock_until behaves as try_lock if the timeout has
 391         already expired or exactly matches the current time.
 392
 393         PR libstdc++/78237 Add full steady_clock support to timed_mutex
 394         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK): Define to
 395         detect presence of pthread_mutex_clocklock function.
 396         * config.h.in: Regenerate.
 397         * configure: Regenerate.
 398         * configure.ac: Call GLIBCXX_CHECK_PTHREAD_MUTEX_CLOCKLOCK.
 399         * include/std/mutex (__timed_mutex_impl): Remove unnecessary __clock_t.
 400         (__timed_mutex_impl::_M_try_lock_for): Use best clock to turn relative
 401         timeout into absolute timeout.
 402         (__timed_mutex_impl::_M_try_lock_until): Keep existing implementation
 403         for system_clock. Add new implementation for steady_clock that calls
 404         _M_clocklock. Modify overload for user-defined clock to use a relative
 405         wait so that it automatically uses the best clock.
 406         [_GLIBCXX_USE_PTHREAD_MUTEX_CLOCKLOCK] (timed_mutex::_M_clocklock):
 407         New member function.
 408         (recursive_timed_mutex::_M_clocklock): Likewise.
 409
 410         * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
 411         New test. Ensure that timed_mutex::try_lock_until actually times out
 412         after the specified time when using both system_clock and
 413         steady_clock.
 414         * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: New test.
 415         Likewise but for recursive_timed_mutex.
 416         * testsuite/30_threads/timed_mutex/try_lock_until/57641.cc: Template
 417         test functions and use them to test both steady_clock and system_clock.
 418         * testsuite/30_threads/unique_lock/locking/4.cc: Likewise. Wrap call
 419         to timed_mutex::try_lock_until in VERIFY macro to check its return
 420         value.
 421
 422 2019-11-30  Jonathan Wakely  <jwakely@redhat.com>
 423
 424         * acinclude.m4 (GLIBCXX_ENABLE_FILESYSTEM_TS): Enable by default for
 425         mingw targets.
 426         * configure: Regenerate.
 427
 428         * include/bits/fs_path.h (u8path(InputIterator, InputIterator))
 429         (u8path(const Source&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Simplify
 430         conditions.
 431         * include/experimental/bits/fs_path.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 432         (__u8path(const Source&, char)): Add overloads for std::string and
 433         types convertible to std::string.
 434         (_Cvt::_S_wconvert): Add a new overload for char8_t strings and use
 435         codecvt_utf8_utf16 to do the correct conversion.
 436
 437 2019-11-29  Jonathan Wakely  <jwakely@redhat.com>
 438
 439         * include/bits/fs_path.h (path::operator/=): Change template-head to
 440         use typename instead of class.
 441         * include/experimental/bits/fs_path.h (path::operator/=): Likewise.
 442         * include/std/ostream (operator<<): Likewise.
 443
 444 2019-11-29  Tom Honermann  <tom@honermann.net>
 445
 446         New tests
 447         * testsuite/27_io/basic_ostream/inserters_character/char/deleted.cc:
 448         New test to validate deleted overloads of character and string
 449         inserters for narrow ostreams.
 450         * testsuite/27_io/basic_ostream/inserters_character/wchar_t/deleted.cc:
 451         New test to validate deleted overloads of character and string
 452         inserters for wide ostreams.
 453         * testsuite/27_io/filesystem/path/factory/u8path-char8_t.cc: New test
 454         to validate u8path invocations with sequences of char8_t.
 455         * testsuite/experimental/filesystem/path/factory/u8path-char8_t.cc:
 456         New test to validate u8path invocations with sequences of char8_t.
 457
 458         Updates to existing tests
 459         * testsuite/experimental/feat-char8_t.cc: Updated the expected
 460         __cpp_lib_char8_t feature test macro value.
 461         * testsuite/27_io/filesystem/path/factory/u8path.cc: Added testing of
 462         u8path invocation with std::string, std::string_view, and iterators
 463         thereof.
 464         * testsuite/experimental/filesystem/path/factory/u8path.cc: Added
 465         testing of u8path invocation with std::string, std::string_view, and
 466         iterators thereof.
 467
 468         Update feature test macro, add deleted operators, update u8path
 469         * include/bits/c++config: Bumped the value of the __cpp_lib_char8_t
 470         feature test macro.
 471         * include/bits/fs_path.h (u8path): Modified u8path to accept sequences
 472         of char8_t.
 473         * include/experimental/bits/fs_path.h (u8path): Modified u8path to
 474         accept sequences of char8_t.
 475         * include/std/ostream: Added deleted overloads of wchar_t, char8_t,
 476         char16_t, and char32_t for ordinary and wide formatted character and
 477         string inserters.
 478
 479         Decouple constraints for u8path from path constructors
 480         * include/bits/fs_path.h: Moved helper utilities out of
 481         std::filesystem::path into a detail namespace to make them
 482         available for use by u8path.
 483         * include/experimental/bits/fs_path.h: Moved helper utilities out
 484         of std::experimental::filesystem::v1::path into a detail
 485         namespace to make them available for use by u8path.
 486
 487 2019-11-29  Jonathan Wakely  <jwakely@redhat.com>
 488
 489         PR libstdc++/91997
 490         * python/libstdcxx/v6/printers.py (find_type): Fail more gracefully
 491         if we run out of base classes to look at.
 492         (lookup_templ_spec, lookup_node_type): New utilities to find node
 493         types for node-based containers.
 494         (StdListPrinter.children, NodeIteratorPrinter.__init__)
 495         (NodeIteratorPrinter.to_string, StdSlistPrinter.children)
 496         (StdSlistIteratorPrinter.to_string, StdRbtreeIteratorPrinter.__init__)
 497         (StdMapPrinter.children, StdSetPrinter.children)
 498         (StdForwardListPrinter.children): Use lookup_node_type instead of
 499         find_type.
 500         (StdListIteratorPrinter.__init__, StdFwdListIteratorPrinter.__init__):
 501         Pass name of node type to NodeIteratorPrinter constructor.
 502         (Tr1HashtableIterator.__init__): Rename argument.
 503         (StdHashtableIterator.__init__): Likewise. Use lookup_templ_spec
 504         instead of find_type.
 505         * testsuite/libstdc++-prettyprinters/59161.cc: Remove workaround for
 506         _Node typedef not being present in debuginfo.
 507         * testsuite/libstdc++-prettyprinters/91997.cc: New test.
 508
 509 2019-11-26  François Dumont  <fdumont@gcc.gnu.org>
 510
 511         * include/debug/helper_functions.h (__valid_range_aux): Use C++98
 512         std::input_iterator_tag default constructor invocation.
 513
 514         * include/debug/array (array<>::fill): Add C++20 constexpr.
 515         (array<>::swap): Likewise.
 516
 517         * include/debug/safe_iterator.h
 518         [__cpp_lib_concepts](_Safe_iterator<>::iterator_concept): Define for
 519         C++20.
 520
 521 2019-11-25  Jonathan Wakely  <jwakely@redhat.com>
 522
 523         * include/bits/iterator_concepts.h (ranges::iter_swap): Fix parameter
 524         types of poison pill overload. Use remove_reference_t when checking
 525         constraints.
 526         * include/bits/stl_iterator.h (move_sentinel): Define for C++20.
 527         (move_iterator): Adjust definitions of nested types for C++20. Add
 528         hidden friends for move_sentinel operations, iter_move and iter_swap.
 529         (common_iterator, counted_iterator): Define for C++20.
 530         * testsuite/24_iterators/move_iterator/cust.cc: New test.
 531         * testsuite/24_iterators/move_iterator/sentinel.cc: New test.
 532         * testsuite/24_iterators/common_iterator/1.cc: New test.
 533         * testsuite/24_iterators/counted_iterator/1.cc: New test.
 534
 535         PR libstdc++/91786
 536         * include/bits/fs_path.h (filesystem_error): Move definition before
 537         the use in u8path.
 538
 539 2019-11-24  François Dumont  <fdumont@gcc.gnu.org>
 540
 541         * include/debug/functions.h: Remove <bits/move.h> include.
 542         (__check_singular_aux, __check_singular): Move...
 543         * include/debug/helper_functions.h:
 544         (__check_singular_aux, __check_singular): ...here.
 545         (__valid_range_aux): Adapt to use latter.
 546         * testsuite/25_algorithms/copy/debug/2_neg.cc: New.
 547
 548 2019-11-20  Janne Blomqvist  <jb@gcc.gnu.org>
 549
 550         * doc/html/api.html: Use https for gcc.gnu.org.
 551         * doc/xml/api.xml: Likewise.
 552
 553 2019-11-19  Jonathan Wakely  <jwakely@redhat.com>
 554
 555         * include/bits/regex.h (ranges::__detail::__enable_view_impl): Fix
 556         declaration.
 557         * include/bits/stl_multiset.h (ranges::__detail::__enable_view_impl):
 558         Likewise.
 559         * include/bits/stl_set.h (ranges::__detail::__enable_view_impl):
 560         Likewise.
 561         * include/bits/unordered_set.h (ranges::__detail::__enable_view_impl):
 562         Likewise.
 563         * include/debug/multiset.h (ranges::__detail::__enable_view_impl):
 564         Likewise.
 565         * include/debug/set.h (ranges::__detail::__enable_view_impl): Likewise.
 566         * include/debug/unordered_set (ranges::__detail::__enable_view_impl):
 567         Likewise.
 568
 569 2019-11-18  Jonathan Wakely  <jwakely@redhat.com>
 570
 571         * include/std/thread: Reduce header dependencies.
 572         (jthread::get_id()): Add missing return.
 573         (jthread::get_stop_token()): Avoid unnecessary stop_source temporary.
 574         (jthread::_S_create): Check is_invocable using decayed types. Add
 575         static assertion.
 576         * testsuite/30_threads/jthread/1.cc: Add dg-require-gthreads.
 577         * testsuite/30_threads/jthread/2.cc: Likewise.
 578         * testsuite/30_threads/jthread/3.cc: New test.
 579         * testsuite/30_threads/jthread/jthread.cc: Add missing directives for
 580         pthread and gthread support. Use VERIFY instead of assert.
 581
 582         * include/bits/alloc_traits.h (allocator_traits::construct)
 583         (allocator_traits::destroy, allocator_traits::max_size): Add unused
 584         attributes to parameters that are not used in C++20.
 585         * include/std/bit (__ceil2): Add braces around assertion to avoid
 586         -Wmissing-braces warning.
 587
 588 2019-11-16  Edward Smith-Rowland  <3dw4rd@verizon.net>
 589
 590         Repair the <tuple> part of C++20 p1032 Misc constexpr bits.
 591         * include/bits/uses_allocator.h (__uses_alloc0::_Sink::operaror=)
 592         (__use_alloc(const _Alloc&)) : Constexpr.
 593
 594 2019-11-17  Jonathan Wakely  <jwakely@redhat.com>
 595
 596         * include/std/string_view (basic_string_view(It, End)): Add range
 597         constructor and deduction guide from P1391R4.
 598         * testsuite/21_strings/basic_string_view/cons/char/range.cc: New test.
 599
 600         * include/bits/regex.h (match_results): Specialize __enable_view_impl.
 601         * include/bits/stl_set.h (set): Likewise.
 602         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
 603         Likewise.
 604         * include/debug/multiset.h (__debug::multiset): Likewise.
 605         * include/debug/set.h (__debug::set): Likewise.
 606         * include/debug/unordered_set (__debug::unordered_set)
 607         (__debug::unordered_multiset): Likewise.
 608         * include/std/ranges (ranges::view, ranges::enable_view)
 609         (ranges::view_interface, ranges::subrange, ranges::empty_view)
 610         (ranges::single_view, ranges::views::single, ranges::iota_view)
 611         (ranges::views::iota): Define for C++20.
 612         * testsuite/std/ranges/empty_view.cc: New test.
 613         * testsuite/std/ranges/iota_view.cc: New test.
 614         * testsuite/std/ranges/single_view.cc: New test.
 615         * testsuite/std/ranges/view.cc: New test.
 616
 617 2019-11-16  Jonathan Wakely  <jwakely@redhat.com>
 618
 619         * include/std/ranges: Revert accidentally committed changes.
 620
 621         * include/std/thread (jthread::jthread()): Use nostopstate constant.
 622         (jthread::jthread(Callable&&, Args&&...)): Use helper function to
 623         create std::thread instead of indirection through a lambda. Use
 624         remove_cvref_t instead of decay_t.
 625         (jthread::joinable(), jthread::get_id(), jthread::native_handle())
 626         (jthread::hardware_concurrency()): Add nodiscard attribute.
 627         (swap(jthread&. jthread&)): Define hidden friend.
 628         (jthread::_S_create): New helper function for constructor.
 629
 630 2019-11-15  Edward Smith-Rowland  <3dw4rd@verizon.net>
 631
 632         Implement the <tuple> part of C++20 p1032 Misc constexpr bits.
 633         * include/std/tuple (_Head_base, _Tuple_impl(allocator_arg_t,...)
 634         (_M_assign, tuple(allocator_arg_t,...), _Inherited, operator=, _M_swap)
 635         (swap, pair(piecewise_construct_t,): Constexpr.
 636         * (__uses_alloc0::_Sink::operator=, __uses_alloc_t): Constexpr.
 637         * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: New test.
 638         * testsuite/20_util/tuple/constexpr_swap.cc : New test.
 639         * testsuite/20_util/uses_allocator/69293_neg.cc: Extra error for C++20.
 640         * testsuite/20_util/uses_allocator/cons_neg.cc: : Extra error for C++20.
 641
 642 2019-11-15  Jonathan Wakely  <jwakely@redhat.com>
 643
 644         * include/std/stop_token: Reduce header dependencies by including
 645         internal headers.
 646         (stop_token::swap(stop_token&), swap(stop_token&, stop_token&)):
 647         Define.
 648         (operator!=(const stop_token&, const stop_token&)): Fix return value.
 649         (stop_token::_Stop_cb::_Stop_cb(Cb&&)): Use std::forward instead of
 650         (stop_token::_Stop_state_t) [_GLIBCXX_HAS_GTHREADS]: Use lock_guard
 651         instead of unique_lock.
 652         [!_GLIBCXX_HAS_GTHREADS]: Do not use mutex.
 653         (stop_token::stop_token(_Stop_state)): Change parameter to lvalue
 654         reference.
 655         (stop_source): Remove unnecessary using-declarations for names only
 656         used once.
 657         (swap(stop_source&, stop_source&)): Define.
 658         (stop_callback(const stop_token&, _Cb&&))
 659         (stop_callback(stop_token&&, _Cb&&)): Replace lambdas with a named
 660         function. Use std::forward instead of std::move. Run callbacks if a
 661         stop request has already been made.
 662         (stop_source::_M_execute()): Remove.
 663         (stop_source::_S_execute(_Stop_cb*)): Define.
 664         * include/std/version (__cpp_lib_jthread): Define conditionally.
 665         * testsuite/30_threads/stop_token/stop_callback.cc: New test.
 666         * testsuite/30_threads/stop_token/stop_source.cc: New test.
 667         * testsuite/30_threads/stop_token/stop_token.cc: Enable test for
 668         immediate execution of callback.
 669
 670 2019-11-15  Edward Smith-Rowland  <3dw4rd@verizon.net>
 671
 672         Implement the default_searcher part of C++20 p1032 Misc constexpr bits.
 673         * include/std/functional
 674         (default_searcher, default_searcher::operator()): Constexpr.
 675         * testsuite/20_util/function_objects/constexpr_searcher.cc: New.
 676
 677 2019-11-15  Jonathan Wakely  <jwakely@redhat.com>
 678
 679         * include/bits/iterator_concepts.h (weakly_incrementable): Adjust.
 680         * include/std/concepts (default_constructible): Rename to
 681         default_initializable and require default-list-initialization and
 682         default-initialization to be valid (LWG 3149).
 683         (semiregular): Adjust to new name.
 684         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
 685         1.cc: Rename directory to concept.defaultinitializable and adjust to
 686         new name.
 687         * testsuite/std/concepts/concepts.lang/concept.defaultinitializable/
 688         lwg3149.cc: New test.
 689         * testsuite/util/testsuite_iterators.h (test_range): Adjust.
 690
 691         * src/c++17/fs_path.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
 692         (is_disk_designator): New helper function.
 693         (path::_Parser::root_path()): Use is_disk_designator.
 694         (path::lexically_relative(const path&)): Implement resolution of
 695         LWG 3070.
 696         * testsuite/27_io/filesystem/path/generation/relative.cc: Check with
 697         path components that look like a root-name.
 698
 699         * doc/doxygen/user.cfg.in: Add <stop_token>.
 700         * include/precompiled/stdc++.h: Likewise.
 701         * include/std/stop_token: Fix definition of std::nostopstate.
 702         * testsuite/30_threads/headers/stop_token/synopsis.cc: New test.
 703         * testsuite/30_threads/headers/thread/types_std_c++20.cc: New test.
 704         * testsuite/30_threads/stop_token/stop_source.cc: New test.
 705         * testsuite/30_threads/stop_token/stop_token.cc: Remove unnecessary
 706         dg-require directives. Remove I/O and inclusion of <iostream>.
 707
 708 2019-11-14  Thomas Rodgers  <trodgers@redhat.com>
 709
 710         * include/Makefile.am: Add <stop_token> header.
 711         * include/Makefile.in: Regenerate.
 712         * include/std/condition_variable: Add overloads for stop_token support
 713         to condition_variable_any.
 714         * include/std/stop_token: New file.
 715         * include/std/thread: Add jthread type.
 716         * include/std/version (__cpp_lib_jthread): New value.
 717         * testsuite/30_threads/condition_variable_any/stop_token/1.cc: New test.
 718         * testsuite/30_threads/condition_variable_any/stop_token/2.cc: New test.
 719         * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
 720         New test.
 721         * testsuite/30_threads/jthread/1.cc: New test.
 722         * testsuite/30_threads/jthread/2.cc: New test.
 723         * testsuite/30_threads/jthread/jthread.cc: New test.
 724         * testsuite/30_threads/stop_token/1.cc: New test.
 725         * testsuite/30_threads/stop_token/2.cc: New test.
 726         * testsuite/30_threads/stop_token/stop_token.cc: New test.
 727
 728 2019-11-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
 729
 730         Implement the <array> part of C++20 p1032 Misc constexpr bits.
 731         * include/std/array (fill, swap): Make constexpr.
 732         * testsuite/23_containers/array/requirements/constexpr_fill.cc: New.
 733         * testsuite/23_containers/array/requirements/constexpr_swap.cc: New.
 734
 735 2019-11-14  Jonathan Wakely  <jwakely@redhat.com>
 736
 737         * include/bits/iterator_concepts.h (__iter_concept_impl): Add
 738         comments.
 739         (indirect_relation): Rename to indirect_binary_predicate and adjust
 740         definition as per P1716R3.
 741         (indirect_equivalence_relation): Define.
 742         (indirectly_comparable): Adjust definition.
 743         * include/std/concepts (equivalence_relation): Define.
 744         * testsuite/std/concepts/concepts.callable/relation.cc: Add tests for
 745         equivalence_relation.
 746
 747         * include/bits/iterator_concepts.h (disable_sized_sentinel): Rename to
 748         disable_sized_sentinel_for.
 749         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust.
 750
 751 2019-11-13  Jonathan Wakely  <jwakely@redhat.com>
 752
 753         * libsupc++/compare (strong_order, weak_order, partial_order)
 754         (compare_strong_order_fallback, compare_weak_order_fallback)
 755         (compare_partial_order_fallback): Define customization point objects
 756         for C++20.
 757         * testsuite/18_support/comparisons/algorithms/partial_order.cc: New
 758         test.
 759         * testsuite/18_support/comparisons/algorithms/strong_order.cc: New
 760         test.
 761         * testsuite/18_support/comparisons/algorithms/weak_order.cc: New test.
 762
 763 2019-11-11  Gerald Pfeifer  <gerald@pfeifer.com>
 764
 765         * doc/xml/gnu/gpl-3.0.xml: Adjust link to "Why not LGPL".
 766
 767 2019-11-10  Gerald Pfeifer  <gerald@pfeifer.com>
 768
 769         * doc/xml/manual/using.xml: Switch www.hboehm.info to https.
 770
 771 2019-11-07  Jonathan Wakely  <jwakely@redhat.com>
 772
 773         * doc/doxygen/user.cfg.in (INPUT): Add <compare> header.
 774         * include/precompiled/stdc++.h: Include <compare> header.
 775
 776         * libsupc++/compare (common_comparison_category)
 777         (common_comparison_category_t): Define for C++20.
 778         * testsuite/18_support/comparisons/common/1.cc: New test.
 779
 780         * include/bits/stl_algo.h (for_each_n): Handle negative count.
 781         * testsuite/25_algorithms/for_each/for_each_n_debug.cc: New test.
 782
 783 2019-11-07  Jason Merrill  <jason@redhat.com>
 784
 785         * libsupc++/compare: Remove strong_equality and weak_equality.
 786
 787 2019-11-06  Jonathan Wakely  <jwakely@redhat.com>
 788
 789         * include/Makefile.in: Regenerate.
 790         * libsupc++/Makefile.in: Regenerate.
 791         * libsupc++/compare (__3way_builtin_ptr_cmp): Define helper.
 792         (compare_three_way): Add missing implementation.
 793
 794         * include/bits/iterator_concepts.h (unreachable_sentinel_t): Remove
 795         redundant equality operators.
 796         * testsuite/util/testsuite_iterators.h (test_range::sentinel):
 797         Likewise.
 798
 799 2019-11-05  Jonathan Wakely  <jwakely@redhat.com>
 800
 801         * libsupc++/compare: New header.
 802         * libsupc++/Makefile.am (std_HEADERS): Add compare.
 803         * include/std/version: Define __cpp_lib_three_way_comparison.
 804         * include/std/functional: #include <compare>.
 805
 806         * include/std/version [!_GLIBCXX_HOSTED]: Do not define feature test
 807         macros for features that are only present in hosted builds.
 808
 809         * include/bits/iterator_concepts.h (__iter_without_nested_types):
 810         Remove incorrect comment.
 811
 812 2019-10-31  Jonathan Wakely  <jwakely@redhat.com>
 813
 814         * doc/html/*: Regenerate.
 815
 816         * include/bits/refwrap.h (reference_wrapper, ref, cref): Add constexpr
 817         specifiers for C++20.
 818         * include/std/functional (_Mem_fn, mem_fn, _Bind, _Bind_result, bind)
 819         (bind_front, _Not_fn, not_fn): Likewise.
 820         * testsuite/20_util/bind/constexpr.cc: New test.
 821         * testsuite/20_util/function_objects/bind_front/constexpr.cc: New test.
 822         * testsuite/20_util/function_objects/mem_fn/constexpr.cc: New test.
 823         * testsuite/20_util/function_objects/not_fn/constexpr.cc: New test.
 824         * testsuite/20_util/reference_wrapper/constexpr.cc: New test.
 825
 826         * doc/doxygen/user.cfg.in: Add new header.
 827         * include/Makefile.am: Add new header.
 828         * include/Makefile.in: Regenerate.
 829         * include/precompiled/stdc++.h: Include new header.
 830         * include/std/ranges: New header.
 831         (ranges::sentinel_t, ranges::range_value_t, ranges::range_reference_t)
 832         (ranges::range_rvalue_reference_t, ranges::sized_range)
 833         (ranges::output_range, ranges::input_ranges, ranges::forward_range)
 834         (ranges::bidirectional_range, ranges::random_access_range)
 835         (ranges::contiguous_range, ranges::common::range): Define.
 836         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Check
 837         that disabled_sized_sentinel can be specialized.
 838         * testsuite/std/ranges/access/begin.cc: Include <ranges> instead of
 839         <iterator>.
 840         * testsuite/std/ranges/access/cbegin.cc: Likewise.
 841         * testsuite/std/ranges/access/cdata.cc: Likewise.
 842         * testsuite/std/ranges/access/cend.cc: Likewise.
 843         * testsuite/std/ranges/access/crbegin.cc: Likewise.
 844         * testsuite/std/ranges/access/crend.cc: Likewise.
 845         * testsuite/std/ranges/access/data.cc: Likewise.
 846         * testsuite/std/ranges/access/empty.cc: Likewise.
 847         * testsuite/std/ranges/access/end.cc: Likewise.
 848         * testsuite/std/ranges/access/end_neg.cc: Likewise.
 849         * testsuite/std/ranges/access/rbegin.cc: Likewise.
 850         * testsuite/std/ranges/access/rend.cc: Likewise.
 851         * testsuite/std/ranges/access/size.cc: Likewise.
 852         * testsuite/std/ranges/access/size_neg.cc: Likewise.
 853         * testsuite/std/ranges/headers/ranges/synopsis.cc: New test.
 854         * testsuite/std/ranges/range.cc: New test.
 855         * testsuite/std/ranges/refinements.cc: New test.
 856         * testsuite/std/ranges/sized.cc: New test.
 857         * testsuite/util/testsuite_iterators.h: Add aliases for range types.
 858         (output_iterator_wrapper::WritableObject::operator=): Add const
 859         qualifier so that output_iterator_wrapper satisfies writable.
 860
 861         * testsuite/20_util/add_pointer/value.cc: Check void types.
 862
 863         * include/bits/range_access.h (__sizable): Rename to __sentinel_size.
 864         Remove workaround for PR c++/92268 and remove redundant requirements
 865         that are already checked by sized_sentinel_for.
 866         * testsuite/std/ranges/access/cend.cc: Fix failures.
 867         * testsuite/std/ranges/access/end.cc: Likewise.
 868
 869         * include/bits/range_access.h (ranges::begin): Combine array and
 870         non-array overloads into one function template. Only use ADL for
 871         classes and enums.
 872         (ranges::end, ranges::size): Likewise. Make unbounded arrays
 873         ill-formed.
 874         (ranges::rbegin, ranges::rend): Only use ADL for classes and enums.
 875         Reformat _S_noexcept() functions to mirror operator() structure.
 876         * testsuite/std/ranges/access/begin.cc: Check incomplete array.
 877         * testsuite/std/ranges/access/end_neg.cc: New test.
 878         * testsuite/std/ranges/access/size.cc: Check array of incomplete type.
 879         * testsuite/std/ranges/access/size_neg.cc: New test.
 880
 881         * testsuite/24_iterators/range_access*.cc: Move to ...
 882         * testsuite/24_iterators/range_access/range_access*.cc: ... here.
 883         * testsuite/24_iterators/range_access/range_access_cpp20_neg.cc: New
 884         test.
 885
 886 2019-10-30  Jonathan Wakely  <jwakely@redhat.com>
 887
 888         * include/std/concepts (std::ranges::swap): Use a single overload for
 889         the non-array cases, and switch using if-constexpr.
 890
 891         * include/bits/stl_iterator.h (__normal_iterator::iterator_concept):
 892         Guard with __cpp_lib_concepts macro.
 893
 894         * include/std/bit (__cpp_lib_bitops): Define.
 895         * include/std/version (__cpp_lib_constexpr): Remove.
 896         (__cpp_lib_bitops, __cpp_lib_constexpr_dynamic_alloc): Define.
 897         * testsuite/26_numerics/bit/header.cc: New test.
 898         * testsuite/26_numerics/bit/header-2.cc: New test.
 899         * testsuite/20_util/allocator_traits/header.cc: New test.
 900         * testsuite/20_util/allocator_traits/header-2.cc: New test.
 901
 902         * include/bits/stl_iterator.h (namespace __gnu_cxx): Remove
 903         using-declarations for std::iterator and std::iterator_traits.
 904         (__gnu_cxx::__normal_iterator): Qualify iterator_traits.
 905         * include/ext/algorithm (namespace __gnu_cxx): Remove
 906         using-declarations for std names and qualify those names when used.
 907         Also refer to std::min in parentheses to protect against function-like
 908         macros.
 909         * include/ext/rc_string_base.h: Qualify iterator_traits.
 910         * include/ext/sso_string_base.h: Qualify iterator_traits.
 911
 912         PR libstdc++/92272
 913         * include/bits/stl_bvector.h (_Bit_iterator::pointer)
 914         (_Bit_const_iterator::pointer): Define as void for C++20.
 915         * include/bits/stl_iterator.h (reverse_iterator::operator->()): Add
 916         constraints for C++20.
 917         (__normal_iterator::iterator_concept): Define for C++20.
 918         * include/bits/streambuf_iterator.h (istreambuf_iterator::pointer):
 919         Define as void for C++20.
 920         (ostreambuf_iterator::difference_type): Define as ptrdiff_t for C++20.
 921         (ostreambuf_iterator::ostreambuf_iterator()): Add default constructor
 922         for C++20.
 923         * testsuite/23_containers/vector/bool/iterator_c++20.cc: New test.
 924         * testsuite/24_iterators/bidirectional/concept.cc: New test.
 925         * testsuite/24_iterators/bidirectional/tag.cc: New test.
 926         * testsuite/24_iterators/contiguous/concept.cc: New test.
 927         * testsuite/24_iterators/contiguous/tag.cc: New test.
 928         * testsuite/24_iterators/forward/concept.cc: New test.
 929         * testsuite/24_iterators/forward/tag.cc: New test.
 930         * testsuite/24_iterators/input/concept.cc: New test.
 931         * testsuite/24_iterators/input/tag.cc: New test.
 932         * testsuite/24_iterators/istreambuf_iterator/requirements/typedefs.cc:
 933         New test.
 934         * testsuite/24_iterators/ostreambuf_iterator/requirements/typedefs.cc:
 935         New test.
 936         * testsuite/24_iterators/output/concept.cc: New test.
 937         * testsuite/24_iterators/output/tag.cc: New test.
 938         * testsuite/24_iterators/random_access/concept.cc: New test.
 939         * testsuite/24_iterators/random_access/tag.cc: New test.
 940         * testsuite/24_iterators/range_operations/advance_debug_neg.cc: New
 941         test.
 942         * testsuite/24_iterators/random_access_iterator/26020.cc: Move to ...
 943         * testsuite/24_iterators/operations/26020.cc: ... here.
 944         * testsuite/24_iterators/random_access_iterator/
 945         string_vector_iterators.cc: Move to ...
 946         * testsuite/24_iterators/random_access/string_vector_iterators.cc: ...
 947         here.
 948
 949         * testsuite/util/testsuite_iterators.h: Fix typo in __cplusplus check.
 950
 951 2019-10-29  Jonathan Wakely  <jwakely@redhat.com>
 952
 953         * include/bits/range_access.h (ranges::disable_sized_range)
 954         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
 955         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
 956         (ranges::size, ranges::empty, ranges::data, ranges::cdata)
 957         (ranges::range, ranges::sized_range, ranges::advance, ranges::distance)
 958         (ranges::next, ranges::prev): Guard with __cpp_lib_concepts.
 959         * include/bits/stl_iterator.h (disable_sized_sentinel): Likewise.
 960
 961         * include/bits/alloc_traits.h (__cpp_lib_constexpr_dynamic_alloc):
 962         Define.
 963         (allocator_traits::_S_construct, allocator_traits::_S_destroy)
 964         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use
 965         _GLIBCXX14_CONSTEXPR instead of constexpr.
 966         * include/bits/stl_construct.h (_Destroy): Likewise.
 967
 968         * include/Makefile.am: Add new header.
 969         * include/Makefile.in: Regenerate.
 970         * include/bits/iterator_concepts.h: New header.
 971         (contiguous_iterator_tag, iter_reference_t, ranges::iter_move)
 972         (iter_rvalue_reference_t, incrementable_traits, iter_difference_t)
 973         (readable_traits, iter_value_t, readable, iter_common_reference_t)
 974         (writable, waekly_incrementable, incrementable)
 975         (input_or_output_iterator, sentinel_for, disable_sized_sentinel)
 976         (sized_sentinel_for, input_iterator, output_iterator)
 977         (forward_iterator, bidirectional_iterator, random_access_iterator)
 978         (contiguous_iterator, indirectly_unary_invocable)
 979         (indirectly_regular_unary_invocable, indirect_unary_predicate)
 980         (indirect_relation, indirect_strict_weak_order, indirect_result_t)
 981         (projected, indirectly_movable, indirectly_movable_storable)
 982         (indirectly_copyable, indirectly_copyable_storable, ranges::iter_swap)
 983         (indirectly_swappable, indirectly_comparable, permutable, mergeable)
 984         (sortable, unreachable_sentinel_t, unreachable_sentinel)
 985         (default_sentinel_t, default_sentinel): Define.
 986         (__detail::__cpp17_iterator, __detail::__cpp17_input_iterator)
 987         (__detail::__cpp17_fwd_iterator, __detail::__cpp17_bidi_iterator)
 988         (__detail::__cpp17_randacc_iterator): Define.
 989         (__iterator_traits): Define constrained specializations.
 990         * include/bits/move.h (move): Only use old concept check for C++98.
 991         * include/bits/range_access.h (ranges::disable_sized_range)
 992         (ranges::begin, ranges::end, ranges::cbegin, ranges::cend)
 993         (ranges::rbegin, ranges::rend, ranges::crbegin, ranges::crend)
 994         (ranges::size, ranges::empty, ranges::data, ranges::cdata): Define
 995         new customization points for C++20.
 996         (ranges::range, ranges::sized_range): Define new concepts for C++20.
 997         (ranges::advance, ranges::distance, ranges::next, ranges::prev):
 998         Define new functions for C++20.
 999         (__adl_end, __adl_cdata, __adl_cbegin, __adl_cend, __adl_rbegin)
1000         (__adl_rend, __adl_crbegin, __adl_crend, __adl_cdata, __adl_size)
1001         (__adl_empty): Remove.
1002         * include/bits/stl_iterator.h (disable_sized_sentinel): Specialize
1003         for reverse_iterator.
1004         * include/bits/stl_iterator_base_types.h (contiguous_iterator_tag):
1005         Define new struct for C++20.
1006         (iterator_traits<_Tp*>): Constrain partial specialization in C++20.
1007         * include/std/concepts (__is_class_or_enum): Move to __detail
1008         namespace.
1009         * testsuite/20_util/forward/c_neg.cc: Adjust dg-error line number.
1010         * testsuite/20_util/forward/f_neg.cc: Likewise.
1011         * testsuite/24_iterators/associated_types/incrementable.traits.cc: New
1012         test.
1013         * testsuite/24_iterators/associated_types/readable.traits.cc: New test.
1014         * testsuite/24_iterators/contiguous/concept.cc: New test.
1015         * testsuite/24_iterators/contiguous/tag.cc: New test.
1016         * testsuite/24_iterators/customization_points/iter_move.cc: New test.
1017         * testsuite/24_iterators/customization_points/iter_swap.cc: New test.
1018         * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: New test.
1019         * testsuite/24_iterators/range_operations/advance.cc: New test.
1020         * testsuite/24_iterators/range_operations/distance.cc: New test.
1021         * testsuite/24_iterators/range_operations/next.cc: New test.
1022         * testsuite/24_iterators/range_operations/prev.cc: New test.
1023         * testsuite/26_numerics/adjacent_difference/requirements/
1024         explicit_instantiation/2.cc: Rename types that conflict with C++20
1025         concepts.
1026         * testsuite/26_numerics/adjacent_difference/requirements/
1027         explicit_instantiation/pod.cc: Likewise.
1028         * testsuite/26_numerics/partial_sum/requirements/
1029         explicit_instantiation/2.cc: Likewise.
1030         * testsuite/26_numerics/partial_sum/requirements/
1031         explicit_instantiation/pod.cc: Likewise.
1032         * testsuite/experimental/iterator/requirements.cc: Likewise.
1033         * testsuite/std/ranges/access/begin.cc: New test.
1034         * testsuite/std/ranges/access/cbegin.cc: New test.
1035         * testsuite/std/ranges/access/cdata.cc: New test.
1036         * testsuite/std/ranges/access/cend.cc: New test.
1037         * testsuite/std/ranges/access/crbegin.cc: New test.
1038         * testsuite/std/ranges/access/crend.cc: New test.
1039         * testsuite/std/ranges/access/data.cc: New test.
1040         * testsuite/std/ranges/access/empty.cc: New test.
1041         * testsuite/std/ranges/access/end.cc: New test.
1042         * testsuite/std/ranges/access/rbegin.cc: New test.
1043         * testsuite/std/ranges/access/rend.cc: New test.
1044         * testsuite/std/ranges/access/size.cc: New test.
1045         * testsuite/util/testsuite_iterators.h (contiguous_iterator_wrapper)
1046         (test_range, test_sized_range): New test utilities.
1047
1048         * testsuite/util/testsuite_iterators.h (BoundsContainer::size()): Add
1049         new member function.
1050         (WritableObject::operator=): Constrain with enable_if when available.
1051         (remove_cv): Use std::remove_if when available.
1052         (test_container::it(int)): Use size().
1053         (test_container::size()): Use BoundsContainer::size().
1054
1055         PR libstdc++/92267
1056         * include/bits/stl_deque.h (_Deque_iterator(const _Deque_iterator&)):
1057         Do not define as defaulted.
1058         * testsuite/23_containers/deque/types/92267.cc: New test.
1059
1060 2019-10-26  Gerald Pfeifer  <gerald@pfeifer.com>
1061
1062         * doc/xml/manual/codecvt.xml: Switch pubs.opengroup.org to https.
1063         * doc/xml/manual/locale.xml (LC_ALL): Ditto.
1064         * doc/xml/manual/messages.xml: Ditto.
1065
1066 2019-10-26  John David Anglin  <danglin@gcc.gnu.org>
1067
1068         * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
1069
1070 2019-10-25  Jonathan Wakely  <jwakely@redhat.com>
1071
1072         * testsuite/util/testsuite_iterators.h (output_iterator_wrapper)
1073         (input_iterator_wrapper, forward_iterator_wrapper)
1074         bidirectional_iterator_wrapper, random_access_iterator_wrapper): Remove
1075         user-provided copy constructors and copy assignment operators so they
1076         are defined implicitly.
1077         (input_iterator_wrapper): Initialize members in default constructor.
1078         (forward_iterator_wrapper): Remove assignments to members of base.
1079
1080         * include/bits/allocator.h: Check __cpp_constexpr_dynamic_alloc
1081         before making the std::allocator destructor constexpr.
1082         * testsuite/20_util/allocator/requirements/constexpr.cc: New test.
1083
1084         * include/bits/range_cmp.h: Check __cpp_lib_concepts before defining
1085         concepts. Fix comment.
1086         * include/bits/allocator.h
1087
1088 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
1089
1090         * doc/xml/manual/policy_data_structures_biblio.xml: Switch
1091         pubs.opengroup.org to https.
1092
1093 2019-10-25  Gerald Pfeifer  <gerald@pfeifer.com>
1094
1095         * doc/xml/gnu/gpl-3.0.xml: Switch www.gnu.org to https.
1096
1097 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1098
1099         * doc/xml/manual/status_cxx2020.xml: Add rows and update status.
1100
1101 2019-10-24  Jonathan Wakely  <jwakely@redhat.com>
1102
1103         * include/bits/allocator.h (allocator<void>): Restore the explicit
1104         specialization for C++20, but make its API consistent with the primary
1105         template.
1106         (allocator::~allocator()): Restore the destructor for C++20, but make
1107         it constexpr.
1108         * testsuite/20_util/allocator/rebind_c++20.cc: Check allocator<void>.
1109         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: Likewise.
1110         * testsuite/20_util/allocator/void.cc: Check that constructors and
1111         destructors are trivial. Check for converting constructor in C++20.
1112         * testsuite/ext/malloc_allocator/variadic_construct.cc: Simplify
1113         dejagnu target selector.
1114         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
1115
1116         * include/experimental/executor (__use_future_ct, use_future_t):
1117         Define partial specializations for std::allocator.
1118         (__use_future_ch): Overload constructor for completion tokens using
1119         std::allocator.
1120
1121         PR libstdc++/88338 Implement P0898R3, C++20 concepts library
1122         * doc/xml/manual/status_cxx2020.xml: Update status.
1123         * doc/html/*: Regenerate.
1124         * testsuite/std/concepts/1.cc: New test.
1125         * testsuite/std/concepts/2.cc: New test.
1126
1127         * include/bits/random.h (uniform_random_bit_generator): Define for
1128         C++20.
1129         * testsuite/26_numerics/random/concept.cc: New test.
1130         * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
1131
1132 2019-10-23  Jonathan Wakely  <jwakely@redhat.com>
1133
1134         * include/std/functional (invoke): Add constexpr for C++20.
1135         * include/std/version (__cpp_lib_constexpr_invoke): Define.
1136         * testsuite/20_util/function_objects/invoke/constexpr.cc: New test.
1137
1138         PR c++/91369 Implement P0784R7 changes to allocation and construction
1139         * include/bits/alloc_traits.h: Include <bits/stl_construct.h>.
1140         (allocator_traits::_S_allocate, allocator_traits::_S_construct)
1141         (allocator_traits::_S_destroy, allocator_traits::_S_max_size)
1142         (allocator_traits::_S_select, allocator_traits::allocate)
1143         (allocator_traits::deallocate, allocator_traits::construct)
1144         (allocator_traits::destroy, allocator_traits::max_size)
1145         (allocator_traits::select_on_container_copy_construction)
1146         (allocator_traits<allocator<T>>): Add constexpr specifier for C++20.
1147         (allocator_traits<allocator<T>>::construct): Use construct_at.
1148         (allocator_traits<allocator<T>>::destroy): Use destroy_at.
1149         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Add constexpr
1150         specifier.
1151         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
1152         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move here
1153         from <bits/stl_construct.h>.
1154         * include/bits/allocator.h (allocator::~allocator): Remove for C++20.
1155         (allocator::allocate, allocate::deallocate): Define for C++20 and up.
1156         (operator==, operator!=): Add constexpr specifier for C++20.
1157         * include/bits/stl_construct.h: Don't include <ext/alloc_traits.h>.
1158         (destroy_at): For C++20 add constexpr specifier and support for
1159         destroying arrays.
1160         (construct_at): Define new function for C++20.
1161         (_Construct): Return result of placement new-expression. For C++11 and
1162         up add constexpr. For C++20 dispatch to std::construct_at during
1163         constant evaluation.
1164         (_Destroy(pointer)): Add constexpr specifier. For C++20 dispatch to
1165         std::destroy_at during constant evaluation.
1166         (_Destroy_aux::__destroy, _Destroy_n_aux::__destroy_n): Add constexpr
1167         specifier for C++20.
1168         (_Destroy(ForwardIterator, ForwardIterator))
1169         (_Destroy(ForwardIterator, Size)): Likewise. Do not elide trivial
1170         destructors during constant evaluation.
1171         (destroy, destroy_n): Add constexpr specifier for C++20.
1172         (_Destroy(ForwardIterator, ForwardIterator, Alloc&))
1173         (_Destroy(ForwardIterator, ForwardIterator, allocator<T>&)): Move to
1174         <bits/alloc_traits.h>, to remove dependency on allocators.
1175         * include/bits/stl_uninitialized.h: Include <ext/alloc_traits.h>.
1176         Include <bits/stl_pair.h> instead of <utility>.
1177         * include/ext/alloc_traits.h: Always include <bits/alloc_traits.h>.
1178         (__alloc_traits::construct, __alloc_traits::destroy)
1179         (__alloc_traits::_S_select_on_copy, __alloc_traits::_S_on_swap): Add
1180         constexpr specifier.
1181         * include/ext/malloc_allocator.h  (operator==, operator!=): Add
1182         constexpr specifier for C++20.
1183         * include/ext/new_allocator.h (operator==, operator!=): Likewise.
1184         * testsuite/20_util/headers/memory/synopsis.cc: Add constexpr.
1185         * testsuite/20_util/scoped_allocator/69293_neg.cc: Ignore additional
1186         errors due to constexpr function called after failed static_assert.
1187         * testsuite/20_util/specialized_algorithms/construct_at/1.cc: New test.
1188         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
1189         Ignore additional errors due to constexpr function called after failed
1190         static_assert.
1191         * testsuite/23_containers/vector/cons/destructible_neg.cc: Likewise.
1192
1193         * testsuite/20_util/bind/91371.cc: Fix test to compile as C++11.
1194
1195         * include/debug/helper_functions.h (__valid_range): Change
1196         _GLIBCXX_CONSTEXPR to _GLIBCXX14_CONSTEXPR.
1197
1198         * include/ext/throw_allocator.h (throw_allocator_base): Qualify
1199         size_t and ptrdiff_t.
1200
1201         * include/ext/pb_ds/detail/bin_search_tree_/bin_search_tree_.hpp:
1202         Use detail::rebind_traits.
1203         * include/ext/pb_ds/detail/bin_search_tree_/node_iterators.hpp:
1204         Likewise.
1205         * include/ext/pb_ds/detail/bin_search_tree_/traits.hpp: Likewise.
1206         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp: Likewise.
1207         * include/ext/pb_ds/detail/binary_heap_/entry_cmp.hpp: Likewise.
1208         * include/ext/pb_ds/detail/binary_heap_/entry_pred.hpp: Likewise.
1209         * include/ext/pb_ds/detail/binary_heap_/point_const_iterator.hpp:
1210         Likewise.
1211         * include/ext/pb_ds/detail/binomial_heap_base_/binomial_heap_base_.hpp:
1212         Likewise.
1213         * include/ext/pb_ds/detail/branch_policy/branch_policy.hpp: Likewise.
1214         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp: Likewise.
1215         * include/ext/pb_ds/detail/cond_dealtor.hpp: Likewise.
1216         * include/ext/pb_ds/detail/eq_fn/hash_eq_fn.hpp (has_eq_fn): Likewise.
1217         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp: Likewise.
1218         * include/ext/pb_ds/detail/hash_fn/ranged_hash_fn.hpp: Likewise.
1219         * include/ext/pb_ds/detail/hash_fn/ranged_probe_fn.hpp: Likewise.
1220         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
1221         left_child_next_sibling_heap_.hpp: Likewise.
1222         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/node.hpp:
1223         Likewise.
1224         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
1225         point_const_iterator.hpp: Likewise.
1226         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp: Likewise.
1227         * include/ext/pb_ds/detail/ov_tree_map_/
1228         constructors_destructor_fn_imps.hpp: Likewise.
1229         * include/ext/pb_ds/detail/ov_tree_map_/node_iterators.hpp: Likewise.
1230         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hpp: Likewise.
1231         * include/ext/pb_ds/detail/pairing_heap_/pairing_heap_.hpp: Likewise.
1232         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp: Likewise.
1233         * include/ext/pb_ds/detail/pat_trie_/pat_trie_base.hpp: Likewise.
1234         * include/ext/pb_ds/detail/rb_tree_map_/node.hpp: Likewise.
1235         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp: Likewise.
1236         * include/ext/pb_ds/detail/splay_tree_/node.hpp: Likewise.
1237         * include/ext/pb_ds/detail/thin_heap_/thin_heap_.hpp: Likewise.
1238         * include/ext/pb_ds/detail/trie_policy/sample_trie_access_traits.hpp:
1239         Likewise.
1240         * include/ext/pb_ds/detail/type_utils.hpp: Fix typo in comment.
1241         * include/ext/pb_ds/detail/types_traits.hpp (stored_value): Add
1242         bool parameter to control whether the hash value is stored.
1243         (select_base_type): New class template and partial specialization.
1244         (maybe_null_type): Likewise.
1245         (rebind_traits): New class template.
1246         (type_base): Remove four nearly identical specializations.
1247         (type_dispatch): Remove.
1248         (type_traits): Use select_base_type and maybe_null_type instead of
1249         type_base to control differences between specializations.
1250         * include/ext/pb_ds/list_update_policy.hpp: Use detail::rebind_traits.
1251         * include/ext/pb_ds/priority_queue.hpp: Likewise.
1252         * include/ext/pb_ds/tree_policy.hpp: Likewise.
1253         * include/ext/pb_ds/trie_policy.hpp: Likewise.
1254
1255         * include/backward/hash_set (hash_set): Use __alloc_traits.
1256         * include/backward/hashtable.h (_Hashtable): Likewise.
1257         * include/ext/alloc_traits.h (__alloc_traits::allocate): Add overload
1258         taking a hint.
1259         * include/ext/extptr_allocator.h (_ExtPtr_allocator::allocate): Ignore
1260         hint.
1261         * include/ext/slist (_Slist_base): Use __alloc_traits.
1262         * include/tr1/hashtable.h (_Hashtable): Likewise.
1263         * include/tr1/regex (match_results): Use vector::const_reference
1264         instead of assuming the allocator defines it.
1265         * testsuite/backward/hash_map/23528.cc: Use allocator_traits in C++11.
1266         * testsuite/tr1/6_containers/unordered_map/capacity/29134-map.cc: Use
1267         __gnu_test::max_size.
1268         * testsuite/tr1/6_containers/unordered_multimap/capacity/
1269         29134-multimap.cc: Likewise.
1270         * testsuite/tr1/6_containers/unordered_multiset/capacity/
1271         29134-multiset.cc: Likewise.
1272         * testsuite/tr1/6_containers/unordered_set/capacity/29134-set.cc:
1273         Likewise.
1274
1275 2019-10-22  Jonathan Wakely  <jwakely@redhat.com>
1276
1277         * testsuite/util/testsuite_abi.h: Restore use of tr1/unordered_map
1278         when compiled as C++98.
1279
1280         * include/bits/memoryfwd.h (uses_allocator): Do not declare for C++98.
1281         * testsuite/17_intro/names.cc: Check uses_allocator in C++98.
1282
1283         * include/bits/alloc_traits.h
1284         (allocator_traits<allocator<T>>::allocate): Ignore hint for C++20.
1285         (allocator_traits<allocator<T>>::construct): Perform placement new
1286         directly for C++20, instead of calling allocator<T>::construct.
1287         (allocator_traits<allocator<T>>::destroy): Call destructor directly
1288         for C++20, instead of calling allocator<T>::destroy.
1289         (allocator_traits<allocator<T>>::max_size): Return value directly
1290         for C++20, instead of calling std::allocator<T>::max_size().
1291         (__do_alloc_on_copy, __do_alloc_on_move, __do_alloc_on_swap): Do not
1292         define for C++17 and up.
1293         (__alloc_on_copy, __alloc_on_move, __alloc_on_swap): Use if-constexpr
1294         for C++17 and up, instead of tag dispatching.
1295         * include/bits/allocator.h (allocator<void>): Remove for C++20.
1296         (allocator::pointer, allocator::const_pointer, allocator::reference)
1297         (allocator::const_reference, allocator::rebind): Remove for C++20.
1298         * include/bits/basic_string.h (basic_string): Use __alloc_traits to
1299         rebind allocator.
1300         * include/bits/memoryfwd.h (allocator<void>): Remove for C++20.
1301         * include/ext/debug_allocator.h: Use __alloc_traits for rebinding.
1302         * include/ext/malloc_allocator.h (malloc_allocator::~malloc_allocator)
1303         (malloc_allocator::pointer, malloc_allocator::const_pointer)
1304         (malloc_allocator::reference, malloc_allocator::const_reference)
1305         (malloc_allocator::rebind, malloc_allocator::max_size)
1306         (malloc_allocator::construct, malloc_allocator::destroy): Do not
1307         define for C++20.
1308         (malloc_allocator::_M_max_size): Define new function.
1309         * include/ext/new_allocator.h (new_allocator::~new_allocator)
1310         (new_allocator::pointer, new_allocator::const_pointer)
1311         (new_allocator::reference, new_allocator::const_reference)
1312         (new_allocator::rebind, new_allocator::max_size)
1313         (new_allocator::construct, new_allocator::destroy): Do not
1314         define for C++20.
1315         (new_allocator::_M_max_size): Define new function.
1316         * include/ext/rc_string_base.h (__rc_string_base::_Rep): Use
1317         __alloc_traits to rebind allocator.
1318         * include/ext/rope (_Rope_rep_base, _Rope_base): Likewise.
1319         (rope::rope(CharT, const allocator_type&)): Use __alloc_traits
1320         to construct character.
1321         * include/ext/slist (_Slist_base): Use __alloc_traits to rebind
1322         allocator.
1323         * include/ext/sso_string_base.h (__sso_string_base::_M_max_size):
1324         Use __alloc_traits.
1325         * include/ext/throw_allocator.h (throw_allocator): Do not use optional
1326         members of std::allocator, use __alloc_traits members instead.
1327         * include/ext/vstring.h (__versa_string): Use __alloc_traits.
1328         * include/ext/vstring_util.h (__vstring_utility): Likewise.
1329         * include/std/memory: Include <bits/alloc_traits.h>.
1330         * testsuite/20_util/allocator/8230.cc: Use __gnu_test::max_size.
1331         * testsuite/20_util/allocator/rebind_c++20.cc: New test.
1332         * testsuite/20_util/allocator/requirements/typedefs.cc: Do not check
1333         for pointer, const_pointer, reference, const_reference or rebind in
1334         C++20.
1335         * testsuite/20_util/allocator/requirements/typedefs_c++20.cc: New test.
1336         * testsuite/23_containers/deque/capacity/29134.cc: Use
1337         __gnu_test::max_size.
1338         * testsuite/23_containers/forward_list/capacity/1.cc: Likewise.
1339         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
1340         * testsuite/23_containers/map/capacity/29134.cc: Likewise.
1341         * testsuite/23_containers/multimap/capacity/29134.cc: Likewise.
1342         * testsuite/23_containers/multiset/capacity/29134.cc: Likewise.
1343         * testsuite/23_containers/set/capacity/29134.cc: Likewise.
1344         * testsuite/23_containers/vector/capacity/29134.cc: Likewise.
1345         * testsuite/ext/malloc_allocator/variadic_construct.cc: Do not run
1346         test for C++20.
1347         * testsuite/ext/new_allocator/variadic_construct.cc: Likewise.
1348         * testsuite/ext/vstring/capacity/29134.cc: Use __gnu_test::max_size.
1349         * testsuite/util/replacement_memory_operators.h: Do not assume
1350         Alloc::pointer exists.
1351         * testsuite/util/testsuite_allocator.h (__gnu_test::max_size): Define
1352         helper to call max_size for any allocator.
1353
1354 2019-10-22  Andreas Schwab  <schwab@suse.de>
1355
1356         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
1357
1358 2019-10-18  Jonathan Wakely  <jwakely@redhat.com>
1359
1360         PR libstdc++/92143
1361         * libsupc++/new_opa.cc (operator new) [__APPLE__]: Increase alignment
1362         to at least sizeof(void*).
1363
1364         * include/bits/range_cmp.h (ranges::less::operator()): Inline the
1365         logic from std::less::operator() to remove the dependency on it.
1366
1367 2019-10-17  Jonathan Wakely  <jwakely@redhat.com>
1368
1369         * doc/doxygen/user.cfg.in (INPUT): Add new C++17 and C++20 headers.
1370
1371         * include/Makefile.am: Add new header.
1372         * include/Makefile.in: Regenerate.
1373         * include/bits/range_cmp.h: New header for C++20 function objects.
1374         * include/std/functional: Include new header.
1375         * testsuite/20_util/function_objects/identity/1.cc: New test.
1376         * testsuite/20_util/function_objects/range.cmp/equal_to.cc: New test.
1377         * testsuite/20_util/function_objects/range.cmp/greater.cc: New test.
1378         * testsuite/20_util/function_objects/range.cmp/greater_equal.cc: New
1379         test.
1380         * testsuite/20_util/function_objects/range.cmp/less.cc: New test.
1381         * testsuite/20_util/function_objects/range.cmp/less_equal.cc: New test.
1382         * testsuite/20_util/function_objects/range.cmp/not_equal_to.cc: New
1383         test.
1384
1385         PR libstdc++/92124
1386         * include/bits/forward_list.h
1387         (_M_move_assign(forward_list&&, false_type)): Do not use
1388         __make_move_if_noexcept, instead move unconditionally.
1389         * include/bits/stl_deque.h (_M_move_assign2(deque&&, false_type)):
1390         Likewise.
1391         * include/bits/stl_list.h (_M_move_assign(list&&, false_type)):
1392         Likewise.
1393         * include/bits/stl_vector.h (_M_move_assign(vector&&, false_type)):
1394         Likewise.
1395         * testsuite/23_containers/vector/92124.cc: New test.
1396
1397 2019-10-16  Jonathan Wakely  <jwakely@redhat.com>
1398
1399         * include/bits/c++config (_GLIBCXX_BUILTIN_IS_SAME_AS): Define to
1400         one of __is_same_as or __is_same when available.
1401         * include/std/concepts (__detail::__same_as): Use std::is_same_v.
1402         * include/std/type_traits (is_same) [_GLIBCXX_BUILTIN_IS_SAME_AS]:
1403         Use new macro instead of __is_same_as.
1404         (is_same) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Restore partial
1405         specialization.
1406         (is_same_v) [_GLIBCXX_BUILTIN_IS_SAME_AS]: Use new macro.
1407         (is_same_v) [!_GLIBCXX_BUILTIN_IS_SAME_AS]: Use std::is_same.
1408
1409 2019-10-16  François Dumont  <fdumont@gcc.gnu.org>
1410
1411         * src/c++11/debug.cc (print_field): Replace constness_names <unknown>
1412         entry with <unknown constness>. Replace state_names <unknown> entry with
1413         <unknown state>.
1414
1415 2019-10-11  Jonathan Wakely  <jwakely@redhat.com>
1416
1417         * include/Makefile.am: Add new header.
1418         * include/Makefile.in: Regenerate.
1419         * include/precompiled/stdc++.h: Include <concepts>.
1420         * include/std/concepts: New header for C++20.
1421         * include/std/version (__cpp_lib_concepts): Define.
1422         * scripts/create_testsuite_files: Look for test files in new std
1423         directory.
1424         * testsuite/libstdc++-dg/conformance.exp: Likewise.
1425         * testsuite/std/concepts/concepts.callable/invocable.cc: New test.
1426         * testsuite/std/concepts/concepts.callable/regular_invocable.cc: New
1427         test.
1428         * testsuite/std/concepts/concepts.callable/relation.cc: New test.
1429         * testsuite/std/concepts/concepts.callable/strictweakorder.cc: New
1430         test.
1431         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
1432         floating_point.cc: New test.
1433         * testsuite/std/concepts/concepts.lang/concept.arithmetic/integral.cc:
1434         New test.
1435         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
1436         signed_integral.cc: New test.
1437         * testsuite/std/concepts/concepts.lang/concept.arithmetic/
1438         unsigned_integral.cc: New test.
1439         * testsuite/std/concepts/concepts.lang/concept.assignable/1.cc: New
1440         test.
1441         * testsuite/std/concepts/concepts.lang/concept.common/1.cc: New test.
1442         * testsuite/std/concepts/concepts.lang/concept.commonref/1.cc: New
1443         test.
1444         * testsuite/std/concepts/concepts.lang/concept.constructible/1.cc:
1445         New test.
1446         * testsuite/std/concepts/concepts.lang/concept.convertible/1.cc:
1447         New test.
1448         * testsuite/std/concepts/concepts.lang/concept.copyconstructible/1.cc:
1449         New test.
1450         * testsuite/std/concepts/concepts.lang/concept.defaultconstructible/
1451         1.cc: New test.
1452         * testsuite/std/concepts/concepts.lang/concept.derived/1.cc:
1453         New test.
1454         * testsuite/std/concepts/concepts.lang/concept.destructible/1.cc:
1455         New test.
1456         * testsuite/std/concepts/concepts.lang/concept.moveconstructible/1.cc:
1457         New test.
1458         * testsuite/std/concepts/concepts.lang/concept.same/1.cc:
1459         New test.
1460         * testsuite/std/concepts/concepts.lang/concept.swappable/swap.cc:
1461         New test.
1462         * testsuite/std/concepts/concepts.lang/concept.swappable/swappable.cc:
1463         New test.
1464         * testsuite/std/concepts/concepts.lang/concept.swappable/
1465         swappable_with.cc: New test.
1466         * testsuite/std/concepts/concepts.object/copyable.cc: New test.
1467         * testsuite/std/concepts/concepts.object/movable.cc: New test.
1468         * testsuite/std/concepts/concepts.object/regular.cc: New test.
1469         * testsuite/std/concepts/concepts.object/semiregular.cc: New test.
1470
1471         * include/std/type_traits (is_same): Replace partial specialization
1472         by using __is_same_as built-in in primary template.
1473         (is_same_v): Use __is_same_as built-in instead of instantiating the
1474         is_same trait.
1475
1476         PR libstdc++/92059
1477         * include/tr2/dynamic_bitset (__dynamic_bitset_base): Define all
1478         special member functions as defaulted. Add noexcept to most members.
1479         (__dynamic_bitset_base(size_t, unsigned long long, const _Alloc&)):
1480         Mask off unwanted bits in the __val parameter. Avoid undefined left
1481         shifts.
1482         (__dynamic_bitset_base::_M_assign): Remove.
1483         (__dynamic_bitset_base::_M_do_reset): Use std::fill.
1484         (__dynamic_bitset_base::_M_are_all_aux): Avoid integer promotion when
1485         block_type has lower rank than int.
1486         (dynamic_bitset): Add noexcept to most members. Use injected-class-name
1487         in return types and parameter types.
1488         (dynamic_bitset::_M_Nb): Add default member initializer.
1489         (dynamic_bitset(), dynamic_bitset(const dynamic_bitset&)): Define as
1490         defaulted.
1491         (dynamic_bitset(dynamic_bitset&&)): Clear source object after move.
1492         (dynamic_bitset::operator=(const dynamic_bitset&)): Define as
1493         defaulted.
1494         (dynamic_bitset::operator=(dynamic_bitset&&)): Add noexcept-specifier.
1495         Define without using swap, to propagate allocator correctly.
1496         (dynamic_bitset(const char*, const _Alloc&)): Use strlen.
1497         (dynamic_bitset::_M_do_sanitize, dynamic_bitset::_M_do_fill): Use
1498         casts to avoid unwanted integer promotions.
1499         (dynamic_bitset::_M_copy_from_ptr): Rearrange template parameters and
1500         add default template arguments and default argument to simplify usage.
1501         (dynamic_bitset::_M_copy_from_string): Adjust call to _M_copy_from_ptr.
1502         (operator==(const dynamic_bitset&, const dynamic_bitset&))
1503         (operator<(const dynamic_bitset&, const dynamic_bitset&)): Use _M_Nb.
1504         * include/tr2/dynamic_bitset.tcc (dynamic_bitset::_M_copy_from_ptr):
1505         Adjust template parameters to match declaration.
1506         * testsuite/tr2/dynamic_bitset/cmp.cc: New test.
1507         * testsuite/tr2/dynamic_bitset/cons.cc: New test.
1508         * testsuite/tr2/dynamic_bitset/copy.cc: New test.
1509         * testsuite/tr2/dynamic_bitset/move.cc: New test.
1510         * testsuite/tr2/dynamic_bitset/pr92059.cc: New test.
1511
1512         * include/bits/charconv.h (__to_chars_len): Avoid -Wsign-compare
1513         warnings.
1514
1515 2019-10-10  Jonathan Wakely  <jwakely@redhat.com>
1516
1517         PR libstdc++/91057
1518         * src/c++98/locale.cc [_GLIBCXX_LONG_DOUBLE_COMPAT]
1519         (find_ldbl_sync_facet): Fix parameter type and missing return.
1520
1521 2019-10-09  Marek Polacek  <polacek@redhat.com>
1522
1523         PR c++/91364 - P0388R4: Permit conversions to arrays of unknown bound.
1524         PR c++/69531 - DR 1307: Differently bounded array parameters.
1525         PR c++/88128 - DR 330: Qual convs and pointers to arrays of pointers.
1526         * testsuite/23_containers/span/lwg3255.cc: Adjust test to match the
1527         post-P0388R4 behavior.
1528
1529 2019-10-09  Jonathan Wakely  <jwakely@redhat.com>
1530
1531         PR libstdc++/91057
1532         * src/c++98/locale.cc (locale::id::_M_id()) [__GTHREADS]: Use atomic
1533         compare-exchange or double-checked lock to ensure only one thread sets
1534         the _M_index variable.
1535         [_GLIBCXX_LONG_DOUBLE_COMPAT]: Call find_ldbl_sync_facet to detect
1536         facets that share another facet's ID.
1537         [_GLIBCXX_LONG_DOUBLE_COMPAT] (find_ldbl_sync_facet): New function.
1538
1539         PR libstdc++/78552
1540         * src/c++98/locale_init.cc (locale::classic()): Do not construct a new
1541         locale object for every call.
1542         (locale::_S_initialize_once()): Construct C locale here.
1543
1544 2019-10-08  Jonathan Wakely  <jwakely@redhat.com>
1545
1546         * doc/Makefile.am (doc-html-docbook-regenerate): New target.
1547         (${docbook_outdir}/html): Do not create unused 'html/ext' directory.
1548         * doc/Makefile.in: Regenerate.
1549         * doc/xml/manual/documentation_hacking.xml: Document new target.
1550         * doc/html/*: Regenerate.
1551
1552         * doc/xml/manual/allocator.xml: Use archived copy of CUJ article.
1553         * doc/html/*: Regenerate.
1554
1555 2019-10-06  François Dumont  <fdumont@gcc.gnu.org>
1556
1557         * include/bits/stl_algo.h
1558         (__copy_n_a(_IIte, _Size, _OIte)): New.
1559         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New declaration.
1560         (__copy_n(_IIte, _Size, _OIte, input_iterator_tag)): Adapt to use
1561         latter.
1562         * include/bits/streambuf_iterator.h (istreambuf_iterator<>): Declare
1563         std::__copy_n_a friend.
1564         (__copy_n_a(istreambuf_iterator<>, _Size, _CharT*)): New.
1565         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1.cc: New.
1566         * testsuite/25_algorithms/copy_n/istreambuf_iterator/1_neg.cc: New.
1567         * testsuite/25_algorithms/copy_n/istreambuf_iterator/2_neg.cc: New.
1568
1569         * include/bits/stl_iterator_base_types.h (__iterator_category_t): Define
1570         for C++11.
1571         (_RequireInputIte): Likewise and use __enable_if_t.
1572         * include/std/numeric
1573         (__is_random_access_iter): Use __iterator_category_t.
1574
1575         * include/bits/stl_algo.h (copy_n): Add __glibcxx_requires_can_increment
1576         debug checks.
1577         * testsuite/25_algorithms/copy_n/debug/1_neg.cc: New.
1578         * testsuite/25_algorithms/copy_n/debug/2_neg.cc: New.
1579
1580 2019-10-04  François Dumont  <fdumont@gcc.gnu.org>
1581
1582         * include/debug/forward_list
1583         (_Sequence_traits<__debug::forward_list<>>::_S_size): Returns __dp_sign
1584         distance when not empty.
1585         * include/debug/list (_Sequence_traits<__debug::list<>>::_S_size):
1586         Likewise.
1587         * include/debug/helper_functions.h (__dp_sign_max_size): New
1588         _Distance_precision enum entry.
1589         (__valid_range_aux(_IIte, _IIte, _Distance_traits<>::__type,
1590         __false_type)): Adapt.
1591         * include/debug/safe_iterator.tcc
1592         (_Safe_iterator<>::_M_get_distance_to(const _Safe_iterator&)): Review
1593         distance computation.
1594
1595 2019-10-04  Jonathan Wakely  <jwakely@redhat.com>
1596
1597         PR libstdc++/81091
1598         PR libstdc++/91947
1599         * configure.ac: Use AC_SYS_LARGEFILE to enable 64-bit file APIs.
1600         * config.h.in: Regenerate:
1601         * configure: Regenerate:
1602         * include/Makefile.am (${host_builddir}/largefile-config.h): New
1603         target to generate config header for filesystem library.
1604         (${host_builddir}/c++config.h): Rename macros for large file support.
1605         * include/Makefile.in: Regenerate.
1606         * src/c++17/fs_dir.cc: Include new config header.
1607         * src/c++17/fs_ops.cc: Likewise.
1608         (filesystem::file_size): Use uintmax_t for size.
1609         * src/filesystem/dir.cc: Include new config header.
1610         * src/filesystem/ops.cc: Likewise.
1611         (experimental::filesystem::file_size): Use uintmax_t for size.
1612
1613         * testsuite/util/testsuite_abi.h: Use std::unordered_map instead of
1614         std::tr1::unordered_map.
1615         * testsuite/util/testsuite_allocator.h: Likewise.
1616
1617         * include/tr1/hashtable.h: Add header for __gnu_cxx::__alloc_traits.
1618
1619         * include/tr1/hashtable.h (tr1::_Hashtable::_M_allocate_node): Use
1620         __gnu_cxx::__alloc_traits for allocator construct function.
1621         (tr1::_Hashtable::_M_deallocate_node): Likewise for destroy function.
1622
1623         * include/precompiled/stdc++.h: Include <span> for C++20.
1624         * testsuite/17_intro/names.cc: Do not define 'e' for C++20.
1625
1626 2019-10-03  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
1627
1628         * include/parallel/multiway_merge.h (_RAIter3): Replace _C by _Cp.
1629
1630 2019-10-02  Jonathan Wakely  <jwakely@redhat.com>
1631
1632         * config/abi/pre/gnu.ver: Tighten up greedy wildcards.
1633
1634         * doc/xml/manual/parallel_mode.xml: Add caveat about support for
1635         recent standards.
1636         * doc/html/*: Regenerate.
1637
1638 2019-10-01  Jonathan Wakely  <jwakely@redhat.com>
1639
1640         * include/experimental/algorithm (experimental::sample): Qualify call
1641         to __sample correctly.
1642         * include/parallel/algo.h (sample, for_each_n): Add using-declarations
1643         for algorithms that don't have parallel implementations.
1644
1645         * include/parallel/algobase.h (equal, lexicographical_compare): Add
1646         _GLIBCXX20_CONSTEXPR and dispatch to sequential algorithm when being
1647         constant evaluated.
1648         * include/parallel/algorithmfwd.h (equal, lexicographical_compare):
1649         Add _GLIBCXX20_CONSTEXPR.
1650
1651         * testsuite/17_intro/using_namespace_std_tr1_neg.cc: Skip test for
1652         parallel mode.
1653         * testsuite/20_util/hash/84998.cc: Likewise.
1654         * testsuite/23_containers/deque/types/pmr_typedefs_debug.cc: Likewise.
1655         * testsuite/23_containers/forward_list/pmr_typedefs_debug.cc: Likewise.
1656         * testsuite/23_containers/list/pmr_typedefs_debug.cc: Likewise.
1657         * testsuite/23_containers/map/pmr_typedefs_debug.cc: Likewise.
1658         * testsuite/23_containers/multimap/pmr_typedefs_debug.cc: Likewise.
1659         * testsuite/23_containers/multiset/pmr_typedefs_debug.cc: Likewise.
1660         * testsuite/23_containers/set/pmr_typedefs_debug.cc: Likewise.
1661         * testsuite/23_containers/unordered_map/pmr_typedefs_debug.cc:
1662         Likewise.
1663         * testsuite/23_containers/unordered_multimap/pmr_typedefs_debug.cc:
1664         Likewise.
1665         * testsuite/23_containers/unordered_multiset/pmr_typedefs_debug.cc:
1666         Likewise.
1667         * testsuite/23_containers/unordered_set/pmr_typedefs_debug.cc:
1668         Likewise.
1669         * testsuite/23_containers/vector/cons/destructible_debug_neg.cc:
1670         Likewise.
1671         * testsuite/23_containers/vector/types/pmr_typedefs_debug.cc: Likewise.
1672         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
1673         * testsuite/25_algorithms/copy/86658.cc: Likewise.
1674         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
1675         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
1676         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
1677         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
1678
1679         * include/parallel/algo.h: Replace non-reserved names.
1680         * include/parallel/multiway_merge.h: Likewise.
1681         * include/parallel/multiway_mergesort.h: Likewise.
1682         * include/parallel/numericfwd.h: Likewise.
1683         * testsuite/17_intro/names.cc: Add RAI to test macros.
1684
1685 2019-09-30  François Dumont  <fdumont@gcc.gnu.org>
1686
1687         * include/debug/array: Add C++20 constexpr to comparison operators.
1688         * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc: Adapt
1689         dg-error line numbers.
1690         * testsuite/23_containers/array/tuple_interface/
1691         tuple_element_debug_neg.cc: Likewise.
1692
1693 2019-09-30  Andreas Tobler  <andreast@gcc.gnu.org>
1694
1695         * include/experimental/internet: Include netinet/in.h if we have
1696         _GLIBCXX_HAVE_NETINET_IN_H defined.
1697
1698         * testsuite/ext/special_functions/airy_ai/check_nan.cc: Ignore the
1699         FreeBSD warning about lower advertised precision of tgammal.
1700         * testsuite/ext/special_functions/airy_bi/check_nan.cc: Likewise.
1701         * testsuite/special_functions/07_cyl_bessel_i/check_nan.cc: Likewise.
1702         * testsuite/special_functions/08_cyl_bessel_j/check_nan.cc: Likewise.
1703         * testsuite/special_functions/09_cyl_bessel_k/check_nan.cc: Likewise.
1704         * testsuite/special_functions/10_cyl_neumann/check_nan.cc: Likewise.
1705         * testsuite/special_functions/19_sph_bessel/check_nan.cc: Likewise.
1706         * testsuite/special_functions/21_sph_neumann/check_nan.cc: Likewise.
1707         * testsuite/tr1/5_numerical_facilities/special_functions/
1708         08_cyl_bessel_i/check_nan.cc: Likewise.
1709         * testsuite/tr1/5_numerical_facilities/special_functions/
1710         09_cyl_bessel_j/check_nan.cc: Likewise.
1711         * testuite/tr1/5_numerical_facilities/special_functions/
1712         10_cyl_bessel_k/check_nan.cc: Likewise.
1713         * testsuite/tr1/5_numerical_facilities/special_functions/
1714         11_cyl_neumann/check_nan.cc: Likewise.
1715         * testsuite/tr1/5_numerical_facilities/special_functions/
1716         21_sph_bessel/check_nan.cc: Likewise.
1717         * testsuite/tr1/5_numerical_facilities/special_functions/
1718         23_sph_neumann/check_nan.cc: Likewise.
1719
1720 2019-09-30  Jonathan Wakely  <jwakely@redhat.com>
1721
1722         * include/std/span (span(element_type(&)[N]))
1723         (span(array<value_type, N>&), span(const array<value_type, N>&)):
1724         Deduce array element type to allow safe const conversions (LWG 3255).
1725         [!_GLIBCXX_P1394] (span(Container&), span(const Container&)): Use
1726         remove_cv_t on arguments to __is_std_span and __is_std_array.
1727         * testsuite/23_containers/span/lwg3255.cc: New test.
1728
1729         PR libstdc++/77936
1730         * include/parallel/checkers.h (__is_sorted): Remove unused variable.
1731
1732 2019-09-28  François Dumont  <fdumont@gcc.gnu.org>
1733
1734         * include/bits/stl_algo.h (merge): Fix documentation.
1735         * include/debug/functions.h (__check_sorted_aux): Add C++20 constexpr.
1736         (__check_sorted): Likewise and remove nested irreflexive check.
1737         (__check_sorted_set_aux, __check_sorted_set): Add C++20 constexpr.
1738         (__check_partitioned_lower, __check_partitioned_upper): Likewise.
1739         (_Irreflexive_checker::_S_is_valid): Likewise.
1740         (__is_irreflexive, __is_irreflexive_pred): Likewise.
1741         * include/debug/helper_functions.h (__get_distance): Add constexpr.
1742         (__valid_range_aux): Add C++20 constexpr.
1743         (__valid_range(_Iter, _Iter, _Distance_traits<_Iter>::__type&)):
1744         Likewise and add std::is_constant_evaluated check.
1745         (__valid_range_aux(_Iter, _Iter, std::input_iterator_tag)): New.
1746         (__valid_range_aux(_Iter, _Iter, std::random_accss_iterator_tag)): New.
1747         (__valid_range_aux(_Integral, _Integral, std::__true_type)): New,
1748         use latter.
1749         (__valid_range(_Iter, _Iter)): Adapt to use latter, add constexpr and
1750         __builtin_is_contant_evaludated check..
1751         (__can_advance, __base): Add constexpr.
1752         * include/debug/macros.h [_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED]
1753         (_GLIBCXX_DEBUG_VERIFY_COND_AT): New.
1754         (__glibcxx_check_sorted): Use __glibcxx_check_irreflexive.
1755         (__glibcxx_check_sorted_pred): Use __glibcxx_check_irreflexive_pred.
1756         * testsuite/25_algorithms/binary_search/constexpr.cc: Use irreflexive
1757         std::less.
1758         * testsuite/25_algorithms/is_sorted/constexpr.cc: Likewise.
1759         * testsuite/25_algorithms/merge/constexpr.cc: Fix order in camm. Fix
1760         lambda to be irreflexive.
1761
1762 2019-09-27  Maciej W. Rozycki  <macro@wdc.com>
1763
1764         * configure: Regenerate.
1765
1766 2019-09-27  Jonathan Wakely  <jwakely@redhat.com>
1767
1768         PR libstdc++/91910
1769         * src/c++11/debug.cc (_Safe_iterator_base::_M_detach()): Load pointer
1770         atomically and lock the mutex before accessing the sequence.
1771         (_Safe_local_iterator_base::_M_detach()): Likewise.
1772         (_Safe_iterator_base::_M_reset()): Clear _M_sequence atomically.
1773
1774 2019-09-26  Jonathan Wakely  <jwakely@redhat.com>
1775
1776         * include/debug/array (to_array): Define for debug mode.
1777
1778         * include/bits/stl_pair.h (pair): Add _GLIBCXX20_CONSTEXPR to
1779         piecewise construction constructor, assignment operators, and swap.
1780         * include/std/tuple (pair::pair(piecewise_construct_t, tuple, tuple)):
1781         Add _GLIBCXX20_CONSTEXPR.
1782         (pair::pair(tuple, tuple, _Index_tuple, _Index_tuple)): Likewise.
1783         * testsuite/20_util/pair/constexpr_assign.cc: New test.
1784         * testsuite/20_util/pair/constexpr_swap.cc: New test.
1785
1786         * include/experimental/internet (operator==, operator<): Fix loop
1787         condition to avoid reading past the end of the array.
1788
1789         * include/std/array: Remove references to profile mode.
1790         * include/std/bitset: Likewise.
1791         * include/std/deque: Likewise.
1792         * include/std/forward_list: Likewise.
1793         * include/std/list: Likewise.
1794         * include/std/map: Likewise.
1795         * include/std/set: Likewise.
1796         * include/std/unordered_map: Likewise.
1797         * include/std/unordered_set: Likewise.
1798         * include/std/vector: Likewise.
1799         * testsuite/17_intro/headers/c++1998/profile_mode.cc: New test.
1800         * testsuite/17_intro/headers/c++2011/profile_mode.cc: New test.
1801
1802 2019-09-25  Jonathan Wakely  <jwakely@redhat.com>
1803
1804         * include/bits/regex.h
1805         (basic_regex::assign(const C*, size_t, flag_type)): Add default
1806         argument (LWG 3296).
1807         * testsuite/28_regex/basic_regex/assign/char/lwg3296.cc: New test.
1808         * testsuite/28_regex/basic_regex/assign/wchar_t/lwg3296.cc: New test.
1809
1810 2019-09-24  Jonathan Wakely  <jwakely@redhat.com>
1811
1812         * include/std/variant (variant::index()): Remove impossible case.
1813
1814         PR libstdc++/91871
1815         * testsuite/util/testsuite_hooks.h
1816         (conversion::iterator_to_const_iterator()): Do not return an invalid
1817         iterator. Test direct-initialization and direct-list-initialization
1818         as well as implicit conversion.
1819
1820 2019-09-23  Jonathan Wakely  <jwakely@redhat.com>
1821
1822         PR libstdc++/91788 (partial)
1823         * include/std/variant (variant::index()): Improve codegen for cases
1824         where conversion to size_t already works correctly.
1825
1826 2019-09-23  Andreas Schwab  <schwab@suse.de>
1827
1828         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
1829
1830 2019-09-12  Jonathan Wakely  <jwakely@redhat.com>
1831
1832         PR libstdc++/91748
1833         * include/bits/stl_algo.h (for_each_n): Fix random access iterator
1834         case.
1835         * testsuite/25_algorithms/for_each/for_each_n.cc: Test with random
1836         access iterators.
1837
1838 2019-09-11  Jonathan Wakely  <jwakely@redhat.com>
1839
1840         * python/libstdcxx/v6/xmethods.py (SharedPtrUseCountWorker.__call__):
1841         Fix syntax error.
1842
1843         * testsuite/20_util/result_of/sfinae_friendly_1.cc: Add -Wno-volatile
1844         for C++2a and up. Define HAS_52748_FIXED and fix incorrect tests.
1845         * testsuite/tr1/3_function_objects/result_of.cc: Add -Wno-volatile
1846         for C++2a and up.
1847
1848 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
1849
1850         * include/std/type_traits (__do_common_type_impl): Implement
1851         additional COND-RES(CREF(D1), CRED(D2)) condition for C++20.
1852         (basic_common_reference, common_reference, common_reference_t): Define
1853         for C++20.
1854         * testsuite/20_util/common_reference/requirements/alias_decl.cc: New
1855         test.
1856         * testsuite/20_util/common_reference/requirements/
1857         explicit_instantiation.cc: New test.
1858         * testsuite/20_util/common_reference/requirements/typedefs.cc: New
1859         test.
1860
1861         * include/std/charconv (to_chars): Rename to __to_chars_i. Define
1862         non-template overloads for each signed and unsigned integer type and
1863         char. Define deleted overload for bool (LWG 3266).
1864         * testsuite/20_util/to_chars/1_neg.cc: Remove.
1865         * testsuite/20_util/to_chars/3.cc: New test.
1866         * testsuite/20_util/to_chars/lwg3266.cc: New test.
1867
1868 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
1869
1870         * acinclude.m4: Handle uclinux*.
1871         * configure: Regenerate.
1872         * configure.host: Handle uclinux*
1873
1874 2019-09-10  Christophe Lyon  <christophe.lyon@st.com>
1875         Mickaël Guêné <mickael.guene@st.com>
1876
1877         * libsupc++/eh_personality.cc (get_ttype_entry): Add FDPIC
1878         support.
1879
1880 2019-09-10  Jonathan Wakely  <jwakely@redhat.com>
1881
1882         PR libstdc++/91711
1883         * testsuite/23_containers/span/get_neg.cc: Avoid ambiguity due to
1884         0ul being a valid null pointer constant.
1885
1886         * include/std/type_traits (__remove_cv_t): New alias template.
1887         (is_void, is_integral, is_floating_point, is_pointer)
1888         (is_member_object_pointer, is_member_function_pointer, is_null_pointer)
1889         (is_member_point), __is_signed_integer, __is_unsigned_integer)
1890         (__make_unsigned_selector, __make_signed_selector, remove_pointer)
1891         (__decay_selector): Use __remove_cv_t.
1892         (remove_cv): Add partial specializations for cv-qualified types.
1893         (__decay_t): New alias template.
1894         (__decay_and_strip, __common_type_impl, __result_of_impl): Use
1895         __decay_t.
1896         (__enable_if_t): Move earlier in the file.
1897         (_Require): Use __enable_if_t.
1898         (swap(T&, T&)): Use _Require.
1899         (swap(T(&)[N])): Use __enable_if_t.
1900
1901 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1902
1903         Implement C++20 p1424 - 'constexpr' feature macro concerns,
1904         Issue 3256 - Feature testing macro for constexpr algorithms,
1905         and Issue 3257 - Missing feature testing macro update from P0858.
1906         * include/std/version (__cpp_lib_constexpr_algorithms): Bump value.
1907         * include/bits/algorithmfwd.h: Ditto.
1908         * include/std/utility: Ditto.
1909         * testsuite/25_algorithms/constexpr_macro.cc: Ditto.
1910         * testsuite/25_algorithms/cpp_lib_constexpr.cc: New check for
1911         __cpp_lib_constexpr macro in <algorith>.
1912         * testsuite/20_util/exchange/constexpr.cc: Add check for
1913         __cpp_lib_constexpr macro in <utility>.
1914         * testsuite/25_algorithms/adjacent_find/constexpr.cc: Remove check for
1915         __cpp_lib_constexpr_algorithms.
1916         * testsuite/25_algorithms/all_of/constexpr.cc: Ditto.
1917         * testsuite/25_algorithms/any_of/constexpr.cc: Ditto.
1918         * testsuite/25_algorithms/binary_search/constexpr.cc: Ditto.
1919         * testsuite/25_algorithms/copy/constexpr.cc: Ditto.
1920         * testsuite/25_algorithms/copy_backward/constexpr.cc: Ditto.
1921         * testsuite/25_algorithms/copy_if/constexpr.cc: Ditto.
1922         * testsuite/25_algorithms/copy_n/constexpr.cc: Ditto.
1923         * testsuite/25_algorithms/count/constexpr.cc: Ditto.
1924         * testsuite/25_algorithms/count_if/constexpr.cc: Ditto.
1925         * testsuite/25_algorithms/equal/constexpr.cc: Ditto.
1926         * testsuite/25_algorithms/equal_range/constexpr.cc: Ditto.
1927         * testsuite/25_algorithms/fill/constexpr.cc: Ditto.
1928         * testsuite/25_algorithms/fill_n/constexpr.cc: Ditto.
1929         * testsuite/25_algorithms/find/constexpr.cc: Ditto.
1930         * testsuite/25_algorithms/find_end/constexpr.cc: Ditto.
1931         * testsuite/25_algorithms/find_first_of/constexpr.cc: Ditto.
1932         * testsuite/25_algorithms/find_if/constexpr.cc: Ditto.
1933         * testsuite/25_algorithms/find_if_not/constexpr.cc: Ditto.
1934         * testsuite/25_algorithms/for_each/constexpr.cc: Ditto.
1935         * testsuite/25_algorithms/generate/constexpr.cc: Ditto.
1936         * testsuite/25_algorithms/generate_n/constexpr.cc: Ditto.
1937         * testsuite/25_algorithms/is_heap/constexpr.cc: Ditto.
1938         * testsuite/25_algorithms/is_heap_until/constexpr.cc: Ditto.
1939         * testsuite/25_algorithms/is_partitioned/constexpr.cc: Ditto.
1940         * testsuite/25_algorithms/is_permutation/constexpr.cc: Ditto.
1941         * testsuite/25_algorithms/is_sorted/constexpr.cc: Ditto.
1942         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: Ditto.
1943         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: Ditto.
1944         * testsuite/25_algorithms/lower_bound/constexpr.cc: Ditto.
1945         * testsuite/25_algorithms/merge/constexpr.cc: Ditto.
1946         * testsuite/25_algorithms/mismatch/constexpr.cc: Ditto.
1947         * testsuite/25_algorithms/none_of/constexpr.cc: Ditto.
1948         * testsuite/25_algorithms/partition_copy/constexpr.cc: Ditto.
1949         * testsuite/25_algorithms/partition_point/constexpr.cc: Ditto.
1950         * testsuite/25_algorithms/remove/constexpr.cc: Ditto.
1951         * testsuite/25_algorithms/remove_copy/constexpr.cc: Ditto.
1952         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: Ditto.
1953         * testsuite/25_algorithms/remove_if/constexpr.cc: Ditto.
1954         * testsuite/25_algorithms/replace_copy/constexpr.cc: Ditto.
1955         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: Ditto.
1956         * testsuite/25_algorithms/replace_if/constexpr.cc: Ditto.
1957         * testsuite/25_algorithms/reverse_copy/constexpr.cc: Ditto.
1958         * testsuite/25_algorithms/rotate_copy/constexpr.cc: Ditto.
1959         * testsuite/25_algorithms/search/constexpr.cc: Ditto.
1960         * testsuite/25_algorithms/search_n/constexpr.cc: Ditto.
1961         * testsuite/25_algorithms/set_difference/constexpr.cc: Ditto.
1962         * testsuite/25_algorithms/set_intersection/constexpr.cc: Ditto.
1963         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: Ditto.
1964         * testsuite/25_algorithms/set_union/constexpr.cc: Ditto.
1965         * testsuite/25_algorithms/transform/constexpr.cc: Ditto.
1966         * testsuite/25_algorithms/unique/constexpr.cc: Ditto.
1967         * testsuite/25_algorithms/unique_copy/constexpr.cc: Ditto.
1968         * testsuite/25_algorithms/upper_bound/constexpr.cc: Ditto.
1969
1970 2019-09-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
1971
1972         Update docs for recent <span> and constexpr lib changes.
1973         * doc/xml/manual/status_cxx2020.xml: Update p0202r3, p0858r0, p0879r0,
1974         p1023r0, p1085r2 status.
1975         * doc/html/manual/status.html: Regenerate.
1976
1977 2019-09-09  Antony Polukhin  <antoshkka@gmail.com>
1978
1979         * include/bits/charconv.h (__detail::__to_chars_10_impl): Replace
1980         final offsets with constants.
1981
1982 2019-09-09  Jonathan Wakely  <jwakely@redhat.com>
1983
1984         * include/bits/range_access.h (__adl_to_address): Remove.
1985         * include/std/span (__is_base_derived_safe_convertible_v): Replace
1986         with span::__is_compatible.
1987         (__is_std_array_v): Replace with __is_std_array class template and
1988         partial specializations.
1989         (__is_std_array, __is_std_span): New class templates and partial
1990         specializations.
1991         (span::__is_compatible): New alias template for SFINAE constraints.
1992         (span::span(element_type (&)[N])): Remove redundant constraints. Do
1993         not use __adl_data to obtain a pointer.
1994         (span::span(array<value_type, N>&)): Likewise.
1995         (span::span(const array<value_type, N>&)): Likewise.
1996         [_GLIBCXX_P1394] (span::iter_reference_t, span::iterator_t)
1997         (span::iter_value_t, span::derived_from): New alias templates for
1998         SFINAE constraints, until the equivalents are supported in <concepts>
1999         and <iterator>.
2000         [_GLIBCXX_P1394] (span::__is_compatible_iterator): New alias template
2001         for SFINAE constraints.
2002         [_GLIBCXX_P1394] (span::is_compatible_range): New class template for
2003         SFINAE constraints.
2004         [_GLIBCXX_P1394] (span::span(Range&&)): Improve constraints.
2005         [_GLIBCXX_P1394] (span::span(ContiguousIterator, Sentinel)): Likewise.
2006         Use std::to_address instead of __adl_to_address.
2007         [_GLIBCXX_P1394] (span::span(ContiguousIterator, size_type)): Likewise.
2008         [!_GLIBCXX_P1394] (span::__is_compatible_container): New alias
2009         template for SFINAE constraints.
2010         [!_GLIBCXX_P1394] (span::span(Container&))
2011         (span::span(const Container&)): Improve constraints.
2012         [!_GLIBCXX_P1394] (span::span(pointer, size_type))
2013         (span::span(pointer, pointer)): Remove redundant cast of pointer.
2014         (span(const span<OType, OExtent>&)): New constructor.
2015
2016 2019-09-06  Jonathan Wakely  <jwakely@redhat.com>
2017
2018         * include/bits/range_access.h (ssize): Define for C++20.
2019         * testsuite/24_iterators/range_access_cpp20.cc: New test.
2020         * doc/xml/manual/status_cxx2020.xml: Update P1227R2 status.
2021         * doc/html/*: Regenerate.
2022
2023 2019-09-06  Florian Weimer  <fweimer@redhat.com>
2024
2025         * configure: Regenerate.
2026
2027 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
2028
2029         * doc/xml/manual/status_cxx2020.xml: Update status for P0122R7 and
2030         P1024R3. Remove entry for P0920R2.
2031         * include/std/span  (__cpp_lib_span): Change value.
2032         (__extent_storage, __extent_storage<dynamic_extent>): Remove default
2033         constructor.
2034         (span): Replace __extent_storage base class with data member.
2035         (span::_S_subspan_extent): New function.
2036         (span::empty()): Add nodiscard attribute.
2037         (span::front, span::back, span::operator[]): Check preconditions.
2038         (span::first, span::last, span::subspan): Add noexcept. Improve
2039         precondition checks (LWG 3103).
2040         (get): Remove redundant condition from static_assert.
2041         (tuple_element<I, span<T, E>>): Fix static_assert message and simplify.
2042         (as_writable_bytes): Add inline specifier.
2043         * include/std/version (__cpp_lib_span): Change value.
2044         * testsuite/23_containers/span/back_neg.cc: Remove stray semi-colon.
2045         * testsuite/23_containers/span/front_neg.cc: Likewise.
2046         * testsuite/23_containers/span/index_op_neg.cc: Likewise.
2047         * testsuite/23_containers/span/last_neg.cc: Improve test.
2048         * testsuite/23_containers/span/subspan_neg.cc: Likewise.
2049         * testsuite/23_containers/span/1.cc: New test.
2050         * testsuite/23_containers/span/2.cc: New test.
2051         * testsuite/23_containers/span/back_assert_neg.cc: New test.
2052         * testsuite/23_containers/span/first_2_assert_neg.cc: New test.
2053         * testsuite/23_containers/span/first_assert_neg.cc: New test.
2054         * testsuite/23_containers/span/first_neg.cc: New test.
2055         * testsuite/23_containers/span/front_assert_neg.cc: New test.
2056         * testsuite/23_containers/span/index_op_assert_neg.cc: New test.
2057         * testsuite/23_containers/span/last_2_assert_neg.cc: New test.
2058         * testsuite/23_containers/span/last_assert_neg.cc: New test.
2059         * testsuite/23_containers/span/subspan_2_assert_neg.cc: New test.
2060         * testsuite/23_containers/span/subspan_3_assert_neg.cc: New test.
2061         * testsuite/23_containers/span/subspan_4_assert_neg.cc: New test.
2062         * testsuite/23_containers/span/subspan_5_assert_neg.cc: New test.
2063         * testsuite/23_containers/span/subspan_6_assert_neg.cc: New test.
2064         * testsuite/23_containers/span/subspan_assert_neg.cc: New test.
2065
2066 2019-09-05  JeanHeyd Meneide  <phdofthehouse@gmail.com>
2067
2068         * include/Makefile.am: Add <span> header.
2069         * include/Makefile.in: Regenerate.
2070         * include/bits/range_access.h (__adl_begin, __adl_end, __adl_cbegin)
2071         (__adl_cend, __adl_rbegin, __adl_rend, __adl_crbegin, __adl_crend)
2072         (__adl_data, __adl_cdata, __adl_size, __adl_empty, __adl_to_address):
2073         New functions for performing argument-dependent lookup of range
2074         customization points.
2075         * include/bits/stl_iterator.h (__normal_iterator): Add
2076         _GLIBCXX20_CONSTEXPR to all functions.
2077         * include/std/span: New header.
2078         * include/std/version (__cpp_lib_span): Define feature test macro.
2079         * testsuite/23_containers/span/contiguous_range_neg.cc: New test.
2080         * testsuite/23_containers/span/everything.cc: New test.
2081         * testsuite/23_containers/span/get_neg.cc: New test.
2082         * testsuite/23_containers/span/last_neg.cc: New test.
2083         * testsuite/23_containers/span/subspan_neg.cc: New test.
2084         * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: New test.
2085         * testsuite/23_containers/span/tuple_element_oob_neg.cc: New test.
2086         * testsuite/23_containers/span/tuple_size_neg.cc: New test.
2087
2088 2019-09-05  Jonathan Wakely  <jwakely@redhat.com>
2089
2090         * doc/xml/manual/allocator.xml: Remove URL for bibliography entry.
2091         * doc/html/*: Regenerate.
2092
2093 2019-09-04  Mike Crowe  <mac@mcrowe.com>
2094
2095         PR libstdc++/41861
2096         * acinclude.m4 (GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT): Check for new
2097         pthread_cond_clockwait function.
2098         * configure.ac: Use GLIBCXX_CHECK_PTHREAD_COND_CLOCKWAIT.
2099         * configure: Regenerate.
2100         * config.h.in: Regenerate.
2101         * include/std/condition_variable: (condition_variable): Rename
2102         __steady_clock_t typedef and add system_clock. Change __clock_t to be
2103         a typedef for the preferred clock to convert arbitrary other clocks to.
2104         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (wait_until): Add a steady_clock
2105         overload.
2106         (wait_until): Change __clock_t overload to use system_clock.
2107         [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT] (__wait_until_impl): Add
2108         steady_clock overload that calls pthread_cond_clockwait.
2109         (__wait_until_impl): Change __clock_t overload to use system_clock.
2110         (condition_variable_any) [_GLIBCXX_USE_PTHREAD_COND_CLOCKWAIT]: Use
2111         steady_clock for __clock_t if pthread_cond_clockwait is available.
2112
2113 2019-09-04  Mike Crowe  <mac@mcrowe.com>
2114
2115         * testsuite/30_threads/condition_variable/members/2.cc (test01):
2116         Parameterise so that test can be run against an arbitrary clock.
2117         (main): Test using std::chrono::steady_clock and a user-defined
2118         clock in addition to the previous std::chrono::system_clock.
2119         * testsuite/30_threads/condition_variable_any/members/2.cc: Likewise.
2120
2121 2019-09-03  Ulrich Weigand  <uweigand@de.ibm.com>
2122
2123         * crossconfig.m4: Remove references to spu.
2124         * configure: Regenerate.
2125         * doc/xml/manual/appendix_contributing.xml: Remove references
2126         to __ea as "badword" for spu.
2127         * doc/html/manual/source_code_style.html: Regenerate.
2128         * include/tr1/ell_integral.tcc (__ellint_rd): Do not attempt
2129         to avoid __ea (as "badword" for spu).
2130         (__ellint_rj): Likewise.
2131
2132 2019-09-03  Chung-Lin Tang  <cltang@codesourcery.com>
2133
2134         PR other/79543
2135         * acinclude.m4 (GLIBCXX_CHECK_LINKER_FEATURES): Fix GNU ld --version
2136         scanning to conform to the GNU Coding Standards.
2137         * configure: Regenerate.
2138
2139 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
2140
2141         * src/c++17/memory_resource.cc: Use __constinit keyword.
2142
2143 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
2144
2145         * doc/xml/manual/abi.xml: Document 9.x library versions.
2146         * doc/html/*: Regenerate.
2147
2148 2019-09-02  Jonathan Wakely  <jwakely@redhat.com>
2149
2150         * include/std/charconv (__detail::__to_chars_2_len): Use std::log2p1.
2151         (__detail::__to_chars_8_len): Remove.
2152         (__detail::__to_chars_8): Inline length calculation here.
2153         (__detail::__from_chars_binary): Use numeric_limits instead of
2154         CHAR_BIT.
2155
2156 2019-09-02  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
2157
2158         * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
2159         * config/abi/post/i386-solaris/amd64/baseline_symbols.txt: Likewise.
2160         * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
2161         * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
2162         Likewise.
2163
2164 2019-09-01  François Dumont  <fdumont@gcc.gnu.org>
2165
2166         * testsuite_files/util/testsuite_performance.h
2167         (resource_counter::start): Ignore unused malloc(0) result.
2168
2169 2019-09-01  Gerald Pfeifer  <gerald@pfeifer.com>
2170
2171         * doc/xml/manual/policy_data_structures_biblio.xml (COM: Component
2172         Model Object Technologies): Adjust name and link.
2173
2174 2019-08-30  Antony Polukhin  <antoshkka@gmail.com>
2175
2176         * include/std/charconv (__detail::__to_chars_8)
2177         __detail::__to_chars_16): Replace array of precomputed digits with
2178         arithmetic operations to avoid CPU cache misses. Remove zero
2179         termination from array of digits to allow symbol merge with generic
2180         implementation of __detail::__to_chars. Replace final offsets with
2181         constants. Use __detail::__to_chars_len_2 instead of a generic
2182         __detail::__to_chars_len.
2183         (__detail::__to_chars): Remove zero termination from array of digits.
2184         (__detail::__to_chars_2): Leading digit is always '1'.
2185
2186 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
2187
2188         * testsuite/23_containers/vector/cons/89164_c++17.cc: Fix errors.
2189
2190 2019-08-30  Uros Bizjak  <ubizjak@gmail.com>
2191
2192         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
2193
2194 2019-08-30  Jonathan Wakely  <jwakely@redhat.com>
2195
2196         PR libstdc++/89164
2197         * include/bits/stl_algobase.h (__copy_move): Give descriptive names
2198         to template parameters.
2199         * include/bits/stl_uninitialized.h (uninitialized_copy)
2200         (uninitialized_fill, uninitialized_fill_n): Add static assertions to
2201         diagnose invalid uses.
2202         * testsuite/20_util/specialized_algorithms/uninitialized_copy/1.cc:
2203         Adjust expected error.
2204         * testsuite/20_util/specialized_algorithms/uninitialized_copy/89164.cc:
2205         New test.
2206         * testsuite/20_util/specialized_algorithms/uninitialized_copy_n/
2207         89164.cc: New test.
2208         * testsuite/20_util/specialized_algorithms/uninitialized_fill/89164.cc:
2209         New test.
2210         * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/
2211         89164.cc: New test.
2212         * testsuite/23_containers/vector/cons/89164.cc: New test.
2213         * testsuite/23_containers/vector/cons/89164_c++17.cc: New test.
2214
2215 2019-08-29  Jonathan Wakely  <jwakely@redhat.com>
2216
2217         PR libstdc++/91067
2218         * acinclude.m4 (libtool_VERSION): Bump to 6:28:0.
2219         * configure: Regenerate.
2220         * config/abi/pre/gnu.ver (GLIBCXX_3.4.28): Add new version. Export
2221         missing symbols.
2222         * testsuite/27_io/filesystem/iterators/91067.cc: Test move
2223         constructors.
2224         * testsuite/util/testsuite_abi.cc: Add new symbol version.
2225
2226 2019-08-29  Jakub Jelinek  <jakub@redhat.com>
2227
2228         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
2229         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
2230
2231 2019-08-28  Jonathan Wakely  <jwakely@redhat.com>
2232
2233         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
2234         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
2235         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
2236         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
2237         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
2238         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
2239         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
2240
2241 2019-08-23  Joseph Myers  <joseph@codesourcery.com>
2242
2243         * src/filesystem/ops-common.h [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
2244         (std::filesystem::__gnu_posix::lstat): Add return type.
2245
2246 2019-08-20  Jonathan Wakely  <jwakely@redhat.com>
2247
2248         * doc/doxygen/user.cfg.in (INPUT): Remove profile mode headers.
2249
2250         * include/std/numeric (reduce): Fix Doxygen markup.
2251
2252         PR libstdc++/91371
2253         * include/std/type_traits (is_function): Simplify definition. Remove
2254         partial specializations for function types.
2255         (__is_referenceable): Simplify definition.
2256         * testsuite/20_util/bind/91371.cc: New test.
2257         * testsuite/20_util/is_function/91371.cc: New test.
2258         * testsuite/20_util/is_function/value.cc: Check more pointer types.
2259         * testsuite/20_util/is_member_function_pointer/91371.cc: New test.
2260         * testsuite/20_util/is_object/91371.cc: New test.
2261
2262 2019-08-16  Uros Bizjak  <ubizjak@gmail.com>
2263
2264         * config/abi/post/alpha-linux-gnu/baseline_symbols.txt: Update.
2265
2266 2019-08-15  Jonathan Wakely  <jwakely@redhat.com>
2267
2268         PR libstdc++/91456
2269         * include/bits/std_function.h (__check_func_return_type): Remove.
2270         (function::_Callable): Use std::__is_invocable_impl instead of
2271         __check_func_return_type.
2272         * include/std/type_traits (__is_invocable_impl): Add another defaulted
2273         template parameter. Define a separate partial specialization for
2274         INVOKE and INVOKE<void>. For INVOKE<R> replace is_convertible check
2275         with a check that models delayed temporary materialization.
2276         * testsuite/20_util/function/91456.cc: New test.
2277         * testsuite/20_util/is_invocable/91456.cc: New test.
2278
2279 2019-08-14  Jonathan Wakely  <jwakely@redhat.com>
2280
2281         * include/std/type_traits (__is_nullptr_t): Add deprecated attribute.
2282
2283 2019-08-14  Edward Smith-Rowland  <3dw4rd@verizon.net>
2284
2285         Implement C++20 p0879 - Constexpr for swap and swap related functions.
2286         * include/std/version (__cpp_lib_constexpr_swap_algorithms): New macro.
2287         * include/bits/algorithmfwd.h (__cpp_lib_constexpr_swap_algorithms):
2288         New macro.
2289         (iter_swap, make_heap, next_permutation, partial_sort_copy, pop_heap)
2290         (prev_permutation, push_heap, reverse, rotate, sort_heap, swap)
2291         (swap_ranges, nth_element, partial_sort, sort): Add constexpr.
2292         * include/bits/move.h (swap): Add constexpr.
2293         * include/bits/stl_algo.h (__move_median_to_first, __reverse, reverse)
2294         (__gcd, __rotate, rotate, __partition, __heap_select)
2295         (__partial_sort_copy, partial_sort_copy, __unguarded_partition)
2296         (__unguarded_partition_pivot, __partial_sort, __introsort_loop, __sort)
2297         (__introselect, __chunk_insertion_sort, next_permutation)
2298         (prev_permutation, partition, partial_sort, nth_element, sort)
2299         (__iter_swap::iter_swap, iter_swap, swap_ranges): Add constexpr.
2300         * include/bits/stl_algobase.h (__iter_swap::iter_swap, iter_swap)
2301         (swap_ranges): Add constexpr.
2302         * include/bits/stl_heap.h (__push_heap, push_heap, __adjust_heap,
2303         __pop_heap, pop_heap, __make_heap, make_heap, __sort_heap, sort_heap):
2304         Add constexpr.
2305         * include/std/type_traits (swap): Add constexpr.
2306         * testsuite/25_algorithms/headers/algorithm/synopsis.cc: Add constexpr.
2307         * testsuite/25_algorithms/iter_swap/constexpr.cc: New test.
2308         * testsuite/25_algorithms/make_heap/constexpr.cc: New test.
2309         * testsuite/25_algorithms/next_permutation/constexpr.cc: New test.
2310         * testsuite/25_algorithms/nth_element/constexpr.cc: New test.
2311         * testsuite/25_algorithms/partial_sort/constexpr.cc: New test.
2312         * testsuite/25_algorithms/partial_sort_copy/constexpr.cc: New test.
2313         * testsuite/25_algorithms/partition/constexpr.cc: New test.
2314         * testsuite/25_algorithms/pop_heap/constexpr.cc: New test.
2315         * testsuite/25_algorithms/prev_permutation/constexpr.cc: New test.
2316         * testsuite/25_algorithms/push_heap/constexpr.cc: New test.
2317         * testsuite/25_algorithms/reverse/constexpr.cc: New test.
2318         * testsuite/25_algorithms/rotate/constexpr.cc: New test.
2319         * testsuite/25_algorithms/sort/constexpr.cc: New test.
2320         * testsuite/25_algorithms/sort_heap/constexpr.cc: New test.
2321         * testsuite/25_algorithms/swap/constexpr.cc: New test.
2322         * testsuite/25_algorithms/swap_ranges/constexpr.cc: New test.
2323
2324 2019-08-12  Jonathan Wakely  <jwakely@redhat.com>
2325
2326         PR libstdc++/90361
2327         * src/c++17/string-inst.cc: Use _GLIBCXX_USE_CXX11_ABI=1 by default.
2328
2329         * include/std/tuple (__unpack_std_tuple): New variable template and
2330         partial specializations.
2331         (apply, make_from_tuple): Add noexcept-specifier.
2332         * testsuite/20_util/tuple/apply/2.cc: New test.
2333         * testsuite/20_util/tuple/make_from_tuple/2.cc: New test.
2334
2335 2019-08-09  Corentin Gay  <gay@adacore.com>
2336
2337         * testsuite/ext/random/beta_distribution/operators/serialize.cc,
2338         testsuite/ext/random/hypergeometric_distribution/operators/serialize.cc,
2339         testsuite/ext/random/normal_mv_distribution/operators/serialize.cc,
2340         testsuite/ext/random/triangular_distribution/operators/serialize.cc,
2341         testsuite/ext/random/von_mises_distribution/operators/serialize.cc:
2342         Add call to `VERIFY`.
2343
2344 2019-08-09  Alexandre Oliva <oliva@adacore.com>
2345
2346         * include/ext/random
2347         (normal_mv_distribution::param_type::param_type): New private
2348         ctor taking a decomposed varcov matrix, for use by...
2349         (operator>>): ... this, befriended.
2350         * include/ext/random.tcc (operator>>): Use it.
2351         (normal_mv_distribution::param_type::_M_init_lower): Adjust
2352         member function name in exception message.
2353
2354 2019-08-08  Jonathan Wakely  <jwakely@redhat.com>
2355
2356         P0325R4 to_array from LFTS with updates
2357         * include/experimental/array (to_array): Qualify call to __to_array.
2358         * include/std/array (__cpp_lib_to_array, to_array): Define for C++20.
2359         * include/std/version (__cpp_lib_to_array): Likewise.
2360         * testsuite/23_containers/array/creation/1.cc: New test.
2361         * testsuite/23_containers/array/creation/2.cc: New test.
2362         * testsuite/23_containers/array/creation/3_neg.cc: New test.
2363         * testsuite/23_containers/array/tuple_interface/tuple_element_neg.cc:
2364         Use zero for dg-error line number.
2365
2366 2019-08-06  Jonathan Wakely  <jwakely@redhat.com>
2367
2368         P1651R0 bind_front should not unwrap reference_wrapper
2369         * include/std/functional (bind_front): Don't unwrap reference_wrapper.
2370         * include/std/version (__cpp_lib_bind_front): Update value.
2371         * testsuite/20_util/function_objects/bind_front/1.cc: Fix test for
2372         feature test macro.
2373         * testsuite/20_util/function_objects/bind_front/2.cc: New test.
2374
2375         * include/std/numbers [!__STRICT_ANSI__ && _GLIBCXX_USE_FLOAT128]
2376         (e_v, log2e_v, log10e_v, pi_v, inv_pi_v, inv_sqrtpi_v, ln2_v, ln10_v)
2377         (sqrt2_v, sqrt3_v, inv_sqrt3, egamma_v, phi_v): Add explicit
2378         specializations for __float128.
2379         * testsuite/26_numerics/numbers/float128.cc: New test.
2380
2381 2019-08-04  Gerald Pfeifer  <gerald@pfeifer.com>
2382
2383         * doc/xml/manual/documentation_hacking.xml: doxygen.org is now
2384         doxygen.nl.
2385
2386 2019-08-01  Edward Smith-Rowland  <3dw4rd@verizon.net>
2387
2388         Implement C++20 p0202 - Add Constexpr Modifiers to Functions
2389         in <algorithm> and <utility> Headers.
2390         Implement C++20 p1023 - constexpr comparison operators for std::array.
2391         * include/bits/algorithmfwd.h (all_of, any_of, binary_search, copy,
2392         copy_backward, copy_if, copy_n, equal_range, fill, find_end,
2393         find_if_not, includes, is_heap, is_heap_until, is_partitioned,
2394         is_permutation, is_sorted, is_sorted_until, iter_swap, lower_bound,
2395         none_of, partition_copy, partition_point, remove, remove_if,
2396         remove_copy, remove_copy_if, replace_copy, replace_copy_if,
2397         reverse_copy, rotate_copy, uunique, upper_bound, adjacent_find, count,
2398         count_if, equal, find, find_first_of, find_if, for_each, generate,
2399         generate_n, lexicographical_compare, merge, mismatch, replace,
2400         replace_if, search, search_n, set_difference, set_intersection,
2401         set_symmetric_difference, set_union, transform, unique_copy):
2402         Mark constexpr.
2403         * include/bits/cpp_type_traits.h (__miter_base): Mark constexpr.
2404         * include/bits/predefined_ops.h (_Iter_less_val::operator(),
2405         _Val_less_iter::operator(), _Iter_equal_to_iter::operator(),
2406         _Iter_equal_to_val::operator(), _Iter_equals_val::operator()):
2407          Use const ref instead of ref arg;
2408         (_Iter_less_val, __iter_less_val, _Val_less_iter, __val_less_iter,
2409         __iter_equal_to_iter, __iter_equal_to_val, __iter_comp_val,
2410         _Iter_comp_val, _Val_comp_iter, __val_comp_iter, __iter_equals_val,
2411         _Iter_equals_iter, __iter_comp_iter, _Iter_pred, __pred_iter,
2412         _Iter_comp_to_val, __iter_comp_val, _Iter_comp_to_iter,
2413         __iter_comp_iter): Mark constexpr.
2414         * include/bits/stl_algo.h (__find_if, __find_if_not, __find_if_not_n,
2415         __search, __search_n_aux, __search_n, __find_end, find_end, all_of,
2416         none_of, any_of, find_if_not, is_partitioned, partition_point,
2417         __remove_copy_if, remove_copy, remove_copy_if, copy_if, __copy_n,
2418         copy_n, partition_copy, __remove_if, remove, remove_if, __adjacent_find,
2419         __unique, unique, __unique_copy, reverse_copy, rotate_copy,
2420         __unguarded_linear_insert, __insertion_sort, __unguarded_insertion_sort,
2421         __final_insertion_sort, lower_bound, __upper_bound, upper_bound,
2422         __equal_range, equal_range, binary_search, __includes, includes,
2423         __next_permutation, __prev_permutation, __replace_copy_if, replace_copy,
2424         replace_copy_if, __count_if, is_sorted, __is_sorted_until,
2425         is_sorted_until, __is_permutation, is_permutation, for_each, find,
2426         find_if, find_first_of, adjacent_find, count, count_if, search,
2427         search_n, transform, replace, replace_if, generate, generate_n,
2428         unique_copy, __merge, merge, __set_union, set_union, __set_intersection,
2429         set_intersection, __set_difference, set_difference,
2430         __set_symmetric_difference, set_symmetric_difference):  Mark constexpr.
2431         * include/bits/stl_algobase.h (__memmove, __memcmp): New maybe constexpr
2432         wrappers around __builtin_memmove and __builtin_memcmp
2433         respectively;
2434         (__niter_base, __niter_wrap, __copy_m, __copy_move_a, __copy_move_a2,
2435         copy, move, __copy_move_b, __copy_move_backward_a,
2436         __copy_move_backward_a2, copy_backward, move_backward, __fill_a, fill,
2437         __fill_n_a, fill_n, equal, __lc_rai::__newlast1, __lc_rai::__cnd2,
2438         __lexicographical_compare_impl, __lexicographical_compare,
2439         __lexicographical_compare<true>::__lc, __lexicographical_compare_aux,
2440         __lower_bound, lower_bound, equal, __equal4, lexicographical_compare,
2441         __mismatch, mismatch, __is_heap_until, __is_heap, is_heap_until,
2442         is_heap): Mark constexpr.
2443         * include/bits/stl_heap.h (__is_heap_until, __is_heap, is_heap_until,
2444         is_heap): Mark constexpr.
2445         * include/bits/stl_iterator.h (__niter_base, __miter_base): Mark constexpr.
2446         * include/std/array: Make comparison ops constexpr.
2447         * include/std/utility: Make exchange constexpr.
2448         * include/std/version (__cpp_lib_constexpr_algorithms): New macro.
2449         * testsuite/23_containers/array/tuple_interface/get_neg.cc: Adjust.
2450         * testsuite/23_containers/array/tuple_interface/
2451         tuple_element_neg.cc: Adjust.
2452         * testsuite/20_util/exchange/constexpr.cc: New.
2453         * testsuite/23_containers/array/comparison_operators/constexpr.cc: New.
2454         * testsuite/25_algorithms/constexpr_macro.cc: New.
2455         * testsuite/25_algorithms/adjacent_find/constexpr.cc: New.
2456         * testsuite/25_algorithms/all_of/constexpr.cc: New.
2457         * testsuite/25_algorithms/any_of/constexpr.cc: New.
2458         * testsuite/25_algorithms/binary_search/constexpr.cc: New.
2459         * testsuite/25_algorithms/copy/constexpr.cc: New.
2460         * testsuite/25_algorithms/copy_backward/constexpr.cc: New.
2461         * testsuite/25_algorithms/copy_if/constexpr.cc: New.
2462         * testsuite/25_algorithms/copy_n/constexpr.cc: New.
2463         * testsuite/25_algorithms/count/constexpr.cc: New.
2464         * testsuite/25_algorithms/count_if/constexpr.cc: New.
2465         * testsuite/25_algorithms/equal/constexpr.cc: New.
2466         * testsuite/25_algorithms/equal_range/constexpr.cc: New.
2467         * testsuite/25_algorithms/fill/constexpr.cc: New.
2468         * testsuite/25_algorithms/fill_n/constexpr.cc: New.
2469         * testsuite/25_algorithms/find/constexpr.cc: New.
2470         * testsuite/25_algorithms/find_end/constexpr.cc: New.
2471         * testsuite/25_algorithms/find_first_of/constexpr.cc: New.
2472         * testsuite/25_algorithms/find_if/constexpr.cc: New.
2473         * testsuite/25_algorithms/find_if_not/constexpr.cc: New.
2474         * testsuite/25_algorithms/for_each/constexpr.cc: New.
2475         * testsuite/25_algorithms/generate/constexpr.cc: New.
2476         * testsuite/25_algorithms/generate_n/constexpr.cc: New.
2477         * testsuite/25_algorithms/is_heap/constexpr.cc: New.
2478         * testsuite/25_algorithms/is_heap_until/constexpr.cc: New.
2479         * testsuite/25_algorithms/is_partitioned/constexpr.cc: New.
2480         * testsuite/25_algorithms/is_permutation/constexpr.cc: New.
2481         * testsuite/25_algorithms/is_sorted/constexpr.cc: New.
2482         * testsuite/25_algorithms/is_sorted_until/constexpr.cc: New.
2483         * testsuite/25_algorithms/lexicographical_compare/constexpr.cc: New.
2484         * testsuite/25_algorithms/lower_bound/constexpr.cc: New.
2485         * testsuite/25_algorithms/merge/constexpr.cc: New.
2486         * testsuite/25_algorithms/mismatch/constexpr.cc: New.
2487         * testsuite/25_algorithms/none_of/constexpr.cc: New.
2488         * testsuite/25_algorithms/partition_copy/constexpr.cc: New.
2489         * testsuite/25_algorithms/partition_point/constexpr.cc: New.
2490         * testsuite/25_algorithms/remove/constexpr.cc: New.
2491         * testsuite/25_algorithms/remove_copy/constexpr.cc: New.
2492         * testsuite/25_algorithms/remove_copy_if/constexpr.cc: New.
2493         * testsuite/25_algorithms/remove_if/constexpr.cc: New.
2494         * testsuite/25_algorithms/replace_copy/constexpr.cc: New.
2495         * testsuite/25_algorithms/replace_copy_if/constexpr.cc: New.
2496         * testsuite/25_algorithms/replace_if/constexpr.cc: New.
2497         * testsuite/25_algorithms/reverse_copy/constexpr.cc: New.
2498         * testsuite/25_algorithms/rotate_copy/constexpr.cc: New.
2499         * testsuite/25_algorithms/search/constexpr.cc: New.
2500         * testsuite/25_algorithms/search_n/constexpr.cc: New.
2501         * testsuite/25_algorithms/set_difference/constexpr.cc: New.
2502         * testsuite/25_algorithms/set_intersection/constexpr.cc: New.
2503         * testsuite/25_algorithms/set_symmetric_difference/constexpr.cc: New.
2504         * testsuite/25_algorithms/set_union/constexpr.cc: New.
2505         * testsuite/25_algorithms/transform/constexpr.cc: New.
2506         * testsuite/25_algorithms/unique/constexpr.cc: New.
2507         * testsuite/25_algorithms/unique_copy/constexpr.cc: New.
2508         * testsuite/25_algorithms/upper_bound/constexpr.cc: New.
2509
2510 2019-07-31  Jonathan Wakely  <jwakely@redhat.com>
2511
2512         * include/std/memory (make_obj_using_allocator): Qualify call to
2513         uses_allocator_construction_args.
2514
2515         P0631R4 Math Constants
2516         * include/Makefile.am: Add new header.
2517         * include/Makefile.in: Regenerate.
2518         * include/precompiled/stdc++.h: Include new header.
2519         * include/std/numbers: New header.
2520         * include/std/version (__cpp_lib_math_constants): Define.
2521         * testsuite/26_numerics/numbers/1.cc: New test.
2522         * testsuite/26_numerics/numbers/2.cc: New test.
2523         * testsuite/26_numerics/numbers/3.cc: New test.
2524         * testsuite/26_numerics/numbers/nonfloat_neg.cc: New test.
2525
2526         * include/std/bit: Add Doxygen comments.
2527
2528         PR libstdc++/91308
2529         * include/bits/unique_ptr.h (unique_ptr::__safe_conversion_up): Remove
2530         constraints on deleter that should only apply to the constructor.
2531         (unique_ptr<T[], D>::__safe_conversion_up): Likewise.
2532         (unique_ptr<T[], D>::unique_ptr(unique_ptr<U, D>&&)): Restore
2533         constraints on deleter here.
2534         * testsuite/20_util/unique_ptr/assign/91308.cc: New test.
2535
2536 2019-07-29  Jonathan Wakely  <jwakely@redhat.com>
2537
2538         PR libstdc++/51333
2539         * libsupc++/cxxabi.h (__gnu_cxx::recursive_init_error): Do not define
2540         constructor inline.
2541         * libsupc++/guard_error.cc (__gnu_cxx::recursive_init_error): Define
2542         constructor.
2543         * testsuite/18_support/51333.cc: New test.
2544
2545 2019-07-28  Gerald Pfeifer  <gerald@pfeifer.com>
2546
2547         * doc/xml/manual/documentation_hacking.xml: Fix broken reference
2548         to the Doxygen manual. Avoid a "here" link on the way.
2549         Fix another broken link to Doxygen docblocks.
2550
2551 2019-07-26  Jonathan Wakely  <jwakely@redhat.com>
2552
2553         * include/std/bit (__cpp_lib_endian): Define.
2554         * include/std/version (__cpp_lib_endian): Define.
2555         * testsuite/26_numerics/endian/2.cc: New.
2556         * testsuite/26_numerics/endian/3.cc: New.
2557         * testsuite/26_numerics/endian/4.cc: New.
2558
2559 2019-07-26  François Dumont  <fdumont@gcc.gnu.org>
2560
2561         * testsuite/util/testsuite_iterators.h
2562         (bidirectional_iterator_wrapper): Fix type comment.
2563         (random_access_iterator_wrapper): Likewise.
2564
2565 2019-07-25  Jonathan Wakely  <jwakely@redhat.com>
2566
2567         * include/std/bit (endian): Move definition here as per P1612R1.
2568         * include/std/type_traits (endian): Remove definition from here.
2569         * testsuite/20_util/endian/1.cc: Rename to ...
2570         * testsuite/26_numerics/endian/1.cc: ... here. Adjust header.
2571
2572 2019-07-25  Martin Liska  <mliska@suse.cz>
2573             Dominik Infuhr  <dominik.infuehr@theobroma-systems.com>
2574
2575         PR c++/23383
2576         * testsuite/ext/bitmap_allocator/check_delete.cc: Add
2577         -fno-allocation-dce.
2578         * testsuite/ext/bitmap_allocator/check_new.cc: Likewise.
2579         * testsuite/ext/new_allocator/check_delete.cc: Likewise.
2580         * testsuite/ext/new_allocator/check_new.cc: Likewise.
2581
2582 2019-07-22  Jonathan Wakely  <jwakely@redhat.com>
2583
2584         * testsuite/26_numerics/bit/bitops.count/*: Rename to ...
2585         * testsuite/26_numerics/bit/bit.count/*: Here.
2586
2587         * include/std/bit (__rotl, __rotr): Change second parameter from
2588         unsigned int to int and handle negative values.
2589         (rotl, rotr): Remove check for __STRICT_ANSI__. Change second
2590         parameter from unsigned int to int. Add nodiscard attribute.
2591         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Rename to ...
2592         * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Here. Test negative
2593         shifts.
2594         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Rename to ...
2595         * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Here. Test negative
2596         shifts.
2597
2598         * include/std/bit (__ceil2): Make unrepresentable results undefined,
2599         as per P1355R2. Add debug assertion. Perform one left shift, not two,
2600         so that out of range values cause undefined behaviour. Ensure that
2601         shift will still be undefined if left operand is promoted.
2602         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Replace checks for
2603         unrepresentable values with checks that they are not core constant
2604         expressions.
2605         * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: New test.
2606
2607 2019-07-19  François Dumont  <fdumont@gcc.gnu.org>
2608
2609         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): Fix
2610         sized deallocation size computation.
2611
2612 2019-07-19  Andreas Schwab  <schwab@linux-m68k.org>
2613
2614         * config/abi/post/m68k-linux-gnu/baseline_symbols.txt: Update.
2615
2616 2019-07-18  François Dumont  <fdumont@gcc.gnu.org>
2617
2618         * include/bits/stl_tempbuf.h (__detail::__return_temporary_buffer): New.
2619         (~_Temporary_buffer()): Use latter.
2620         (_Temporary_buffer(_FIterator, size_type)): Likewise.
2621
2622 2019-07-17  Andreas Schwab  <schwab@suse.de>
2623
2624         * config/abi/post/ia64-linux-gnu/baseline_symbols.txt: Update.
2625
2626 2019-07-16  Jason Merrill  <jason@redhat.com>
2627
2628         * include/std/memory (uses_allocator_construction_args): Add parens
2629         around constraint.
2630
2631 2019-07-12  Jonathan Wakely  <jwakely@redhat.com>
2632
2633         * testsuite/29_atomics/atomic_float/1.cc: Fix comment.
2634
2635         * include/experimental/string_view (__detail::__idt): Remove.
2636         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
2637         Use __type_identity_t instead of __detail::__idt;
2638         * include/std/string_view (__detail::__idt): Remove.
2639         (operator==, operator!=, operator<, operator>, operator<=, operator>=):
2640         Use __type_identity_t instead of __detail::__idt;
2641         * include/std/type_traits (__type_identity_t): New alias template.
2642
2643         * doc/xml/manual/status_cxx2020.xml: Update status for atomic_ref
2644         and floating point atomics.
2645
2646 2019-07-11  Jonathan Wakely  <jwakely@redhat.com>
2647
2648         * doc/xml/manual/configure.xml: Improve documentation of
2649         --enable-libstdcxx-time option.
2650
2651         * include/bits/atomic_base.h (__atomic_impl): New namespace for
2652         wrappers around atomic built-ins.
2653         (__atomic_float, __atomic_ref): New class templates for use as base
2654         classes.
2655         * include/std/atomic (atomic<float>, atomic<double>)
2656         (atomic<long double>): New explicit specializations.
2657         (atomic_ref): New class template.
2658         (__cpp_lib_atomic_ref): Define.
2659         * include/std/version (__cpp_lib_atomic_ref): Define.
2660         * testsuite/29_atomics/atomic/60695.cc: Adjust dg-error.
2661         * testsuite/29_atomics/atomic_float/1.cc: New test.
2662         * testsuite/29_atomics/atomic_float/requirements.cc: New test.
2663         * testsuite/29_atomics/atomic_ref/deduction.cc: New test.
2664         * testsuite/29_atomics/atomic_ref/float.cc: New test.
2665         * testsuite/29_atomics/atomic_ref/generic.cc: New test.
2666         * testsuite/29_atomics/atomic_ref/integral.cc: New test.
2667         * testsuite/29_atomics/atomic_ref/pointer.cc: New test.
2668         * testsuite/29_atomics/atomic_ref/requirements.cc: New test.
2669
2670 2019-07-06  Jonathan Wakely  <jwakely@redhat.com>
2671
2672         * include/ext/atomicity.h (__exchange_and_add, __atomic_add): Replace
2673         throw() with _GLIBCXX_NOTHROW.
2674         (__atomic_add_dispatch): Return after performing atomic increment.
2675
2676 2019-07-05  Jonathan Wakely  <jwakely@redhat.com>
2677
2678         * include/ext/atomicity.h [_GLIBCXX_ATOMIC_BUILTINS] (__atomic_add)
2679         (__exchange_and_add): Replace static specifier with always_inline
2680         attribute.
2681         (__exchange_and_add_single, __atomic_add_single): Likewise.
2682         (__exchange_and_add_dispatch, __atomic_add_dispatch): Likewise. Also
2683         combine !__gthread_active_p() and !__GTHREADS branches.
2684
2685 2019-07-03  Jonathan Wakely  <jwakely@redhat.com>
2686
2687         PR libstdc++/91067
2688         * acinclude.m4 (libtool_VERSION): Bump to 6:27:0.
2689         * configure: Regenerate.
2690         * config/abi/pre/gnu.ver (GLIBCXX_3.4.27): Add new version. Export
2691         missing symbols.
2692         * testsuite/27_io/filesystem/iterators/91067.cc: New test.
2693         * testsuite/util/testsuite_abi.cc: Add new symbol version.
2694
2695 2019-07-02  Jonathan Wakely  <jwakely@redhat.com>
2696
2697         * include/bits/c++config (_GLIBCXX_HAVE_BUILTIN_LAUNDER)
2698         (_GLIBCXX_HAVE_BUILTIN_IS_CONSTANT_EVALUATED): Use __has_builtin
2699         instead of __is_identifier to detect Clang support.
2700
2701 2019-07-02  Jim Wilson  <jimw@sifive.com>
2702
2703         * configure.ac (BUILD_PDF): Also test for doxygen, dot, xsltproc,
2704         and xmllint.
2705         * configure: Regenerate.
2706
2707 2019-06-27  Jonathan Wakely  <jwakely@redhat.com>
2708
2709         PR libstdc++/91012
2710         * src/c++17/fs_path.cc (filesystem_error::_Impl): Use a string_view
2711         for the what_arg parameters.
2712         (filesystem_error::filesystem_error): Pass system_error::what() to
2713         the _Impl constructor.
2714         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Ensure that
2715         filesystem_error::what() contains system_error::what().
2716
2717 2019-06-26  Jonathan Wakely  <jwakely@redhat.com>
2718
2719         * include/std/charconv (chars_format): Define bitmask type.
2720         * testsuite/20_util/to_chars/chars_format.cc: New test.
2721
2722         * include/bits/fs_path.h (path::__is_encoded_char): Use __is_one_of.
2723         * include/std/bit (_If_is_unsigned_integer_type): Remove.
2724         (_If_is_unsigned_integer): Use __is_unsigned_integer.
2725         (rotl(byte, unsigned), rotr(byte, unsigned), countl_zero(byte))
2726         (countl_one(byte), countr_zero(byte), countr_one(byte))
2727         (popcount(byte), ispow2(byte), ceil2(byte), floor2(byte))
2728         (log2p1(byte)): Remove.
2729         * include/std/charconv (__detail::__is_one_of): Move to <type_traits>.
2730         (__detail::__is_int_to_chars_type): Remove.
2731         (__detail::__integer_to_chars_result_type): Use __is_signed_integer
2732         and __is_unsigned_integer.
2733         * include/std/type_traits (__is_one_of): Move here from <charconv>.
2734         (__is_signed_integer, __is_unsigned_integer): New helpers.
2735         * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Remove test for
2736         std::byte overload.
2737         * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
2738         * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
2739         * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
2740         * testsuite/26_numerics/bit/bitops.count/countl_one.cc: Likewise.
2741         * testsuite/26_numerics/bit/bitops.count/countl_zero.cc: Likewise.
2742         * testsuite/26_numerics/bit/bitops.count/countr_one.cc: Likewise.
2743         * testsuite/26_numerics/bit/bitops.count/countr_zero.cc: Likewise.
2744         * testsuite/26_numerics/bit/bitops.count/popcount.cc: Likewise.
2745         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Likewise.
2746         * testsuite/26_numerics/bit/bitops.rot/rotr.cc: Likewise.
2747
2748 2019-06-25  Jonathan Wakely  <jwakely@redhat.com>
2749
2750         * include/std/numeric (midpoint(T, T)): Avoid std::abs in constexpr
2751         function.
2752
2753 2019-06-25  Jakub Jelinek  <jakub@redhat.com>
2754
2755         * include/pstl/pstl_config.h (_PSTL_PRAGMA_SIMD_SCAN,
2756         _PSTL_PRAGMA_SIMD_INCLUSIVE_SCAN, _PSTL_PRAGMA_SIMD_EXCLUSIVE_SCAN):
2757         Define to OpenMP 5.0 pragmas even for GCC 10.0+.
2758         (_PSTL_UDS_PRESENT): Define to 1 for GCC 10.0+.
2759
2760 2019-06-24  Jonathan Wakely  <jwakely@redhat.com>
2761
2762         * include/std/numeric (midpoint(T, T)): Change implementation for
2763         floating-point types to avoid incorrect rounding of denormals.
2764         * testsuite/26_numerics/midpoint/floating.cc: Add check for correct
2765         rounding with denormals.
2766         * testsuite/26_numerics/gcd/gcd_neg.cc: Adjust dg-error line numbers.
2767         * testsuite/26_numerics/lcm/lcm_neg.cc: Likewise.
2768
2769         * testsuite/18_support/headers/cfloat/values_c++17.cc: New test.
2770
2771 2019-06-20  Jonathan Wakely  <jwakely@redhat.com>
2772
2773         * acinclude.m4 (GLIBCXX_ENABLE_DEBUG): Only do debug build for final
2774         stage of bootstrap.
2775         * configure: Regenerate.
2776
2777         * include/std/variant (_Variant_storage, _Extra_visit_slot_needed):
2778         Qualify calls to __never_valueless.
2779
2780         * doc/xml/manual/status_cxx2017.xml: Fix outdated reference to
2781         C++17 working draft.
2782
2783         * testsuite/libstdc++-prettyprinters/simple.cc: Use non-palindromic
2784         vector<bool> for test.
2785         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2786
2787 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
2788
2789         * include/bits/stream_iterator.h (istream_iterator::_M_equal()): Make
2790         private.
2791         (istream_iterator::_M_read()): Do not check stream state before
2792         attempting extraction. Set stream pointer to null when extraction
2793         fails (P0738R2).
2794         (operator==(const istream_iterator&, const istream_iterator&)): Change
2795         to be a hidden friend of istream_iterator.
2796         (operator!=(const istream_iterator&, const istream_iterator&)):
2797         Likewise.
2798         (ostream_iterator::ostream_iterator()): Add default constructor.
2799         (ostream_iterator::ostream_iterator(ostream_type*, const C*)): Use
2800         addressof.
2801         * testsuite/24_iterators/istream_iterator/1.cc: New test.
2802         * testsuite/24_iterators/ostream_iterator/1.cc: New test.
2803         * testsuite/24_iterators/ostream_iterator/70766.cc: Also check
2804         constructor taking a string.
2805         * testsuite/24_iterators/ostream_iterator/requirements/constexpr.cc:
2806         New test.
2807
2808 2019-06-19  Michael Weghorn  <m.weghorn@posteo.de>
2809             Jonathan Wakely  <jwakely@redhat.com>
2810
2811         PR libstdc++/90945
2812         * python/libstdcxx/v6/printers.py (StdVectorPrinter._iterator): Use
2813         values of type bool for vector<bool> elements.
2814         * testsuite/libstdc++-prettyprinters/simple.cc: Test vector<bool>.
2815         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
2816
2817 2019-06-19  Jonathan Wakely  <jwakely@redhat.com>
2818
2819         PR libstdc++/90920 partially revert r263433
2820         * include/bits/stl_algo.h (__rotate): Restore checks for empty ranges.
2821         (rotate): Remove checks.
2822         * testsuite/25_algorithms/rotate/90920.cc: New test.
2823
2824         * include/std/numeric (reduce(Iter, Iter, T, BinOp)): Fix value
2825         category used in invocable check.
2826         (reduce(Iter, Iter, T)): Pass initial value as rvalue.
2827         * testsuite/26_numerics/reduce/2.cc: New test.
2828
2829 2019-06-18  Jonathan Wakely  <jwakely@redhat.com>
2830
2831         * include/bits/algorithmfwd.h: Change title of doc group.
2832         * include/bits/stl_algo.h (for_each_n): Add new C++17 algorithm from
2833         P0024R2.
2834         * include/bits/stl_numeric.h: Define doc group and add algos to it.
2835         * include/std/numeric (__is_random_access_iter): New internal trait.
2836         (reduce, transform_reduce, exclusive_scan, inclusive_scan)
2837         (transform_exclusive_scan, transform_inclusive_scan): Likewise.
2838         * testsuite/25_algorithms/for_each/for_each_n.cc: New test.
2839         * testsuite/26_numerics/exclusive_scan/1.cc: New test.
2840         * testsuite/26_numerics/inclusive_scan/1.cc: New test.
2841         * testsuite/26_numerics/reduce/1.cc: New test.
2842         * testsuite/26_numerics/transform_exclusive_scan/1.cc: New test.
2843         * testsuite/26_numerics/transform_inclusive_scan/1.cc: New test.
2844         * testsuite/26_numerics/transform_reduce/1.cc: New test.
2845         * testsuite/util/testsuite_iterators.h (test_container::size()): New
2846         member function.
2847
2848         * include/c_global/cstddef (std::byte): Perform arithmetic operations
2849         in unsigned int to avoid promotion (LWG 2950).
2850
2851 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2852
2853         * testsuite/20_util/allocator/1.cc: Add sized delete, which fixes a
2854         failure on AIX.
2855
2856         * include/c_global/cmath (__lerp, lerp): Add noexcept (LWG 3201).
2857
2858         PR libstdc++/90281 Fix string conversions for filesystem::path
2859         * include/bits/fs_path.h (u8path) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
2860         Use codecvt_utf8_utf16 instead of codecvt_utf8. Use
2861         __str_codecvt_in_all to fail for partial conversions and throw on
2862         error.
2863         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS && _GLIBCXX_USE_CHAR8_T]
2864         (path::_Cvt<char8_t>): Add explicit specialization.
2865         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Remove
2866         overloads.
2867         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2868         if-constexpr instead of dispatching to _S_wconvert. Use codecvt
2869         instead of codecvt_utf8. Use __str_codecvt_in_all and
2870         __str_codecvt_out_all.
2871         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2872         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
2873         (path::_S_str_convert) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2874         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
2875         with allocator. Use __str_codecvt_out_all. Fallthrough to POSIX code
2876         after converting to UTF-8.
2877         (path::_S_str_convert): Use codecvt instead of codecvt_utf8. Use
2878         __str_codecvt_in_all.
2879         (path::string): Fix initialization of string types with different
2880         allocators.
2881         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2882         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2883         * include/bits/locale_conv.h (__do_str_codecvt): Reorder static and
2884         runtime conditions.
2885         (__str_codecvt_out_all, __str_codecvt_in_all): New functions that
2886         return false for partial conversions.
2887         * include/experimental/bits/fs_path.h (u8path):
2888         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Implement correctly for mingw.
2889         [_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_wconvert): Add
2890         missing handling for char8_t. Use codecvt and codecvt_utf8_utf16
2891         instead of codecvt_utf8. Use __str_codecvt_in_all and
2892         __str_codecvt_out_all.
2893         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS] (path::_Cvt::_S_convert): Use
2894         codecvt instead of codecvt_utf8. Use __str_codecvt_out_all.
2895         (path::string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2896         codecvt_utf8_utf16 instead of codecvt_utf8. Construct return values
2897         with allocator. Use __str_codecvt_out_all and __str_codecvt_in_all.
2898         (path::string) [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2899         __str_codecvt_in_all.
2900         (path::u8string) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use
2901         codecvt_utf8_utf16 instead of codecvt_utf8. Use __str_codecvt_out_all.
2902         * src/c++17/fs_path.cc (path::_S_convert_loc): Use
2903         __str_codecvt_in_all.
2904         * src/filesystem/path.cc (path::_S_convert_loc): Likewise.
2905         * testsuite/27_io/filesystem/path/construct/90281.cc: New test.
2906         * testsuite/27_io/filesystem/path/factory/u8path.cc: New test.
2907         * testsuite/27_io/filesystem/path/native/string.cc: Test with empty
2908         strings and with Unicode characters outside the basic multilingual
2909         plane.
2910         * testsuite/27_io/filesystem/path/native/alloc.cc: New test.
2911         * testsuite/experimental/filesystem/path/construct/90281.cc: New test.
2912         * testsuite/experimental/filesystem/path/factory/u8path.cc: New test.
2913         * testsuite/experimental/filesystem/path/native/alloc.cc: New test.
2914         * testsuite/experimental/filesystem/path/native/string.cc: Test with
2915         empty strings and with Unicode characters outside the basic
2916         multilingual plane.
2917
2918 2019-06-17  François Dumont  <fdumont@gcc.gnu.org>
2919             Jonathan Wakely  <jwakely@redhat.com>
2920
2921         * include/bits/hashtable.h (struct _Hashtable::_Scoped_node): New type.
2922         (_Hashtable::_M_insert_unique_node): Add key_type parameter. Don't
2923         deallocate node if insertion fails.
2924         (_Hashtable::_M_insert_multi_node): Likewise.
2925         (_Hashtable::_M_reinsert_node): Pass additional key argument.
2926         (_Hashtable::_M_reinsert_node_multi): Likewise. Remove FIXME.
2927         (_Hashtable::_M_extract_node(size_t, __node_base*)): New function.
2928         (_Hashtable::extract(const_iterator)): Use _M_extract_node.
2929         (_Hashtable::extract(const _Key&)): Likewise.
2930         (_Hashtable::_M_merge_unique): Pass additional key argument.
2931         (_Hashtable::_M_emplace<Args>(true_type, Args&&...)): Likewise. Use
2932         _Scoped_node.
2933         (_Hashtable::_M_insert): Likewise.
2934         * include/bits/hashtable_policy.h (_Map_base::operator[]): Likewise.
2935         (_Hashtable_alloc): Add comments to functions with misleading names.
2936
2937 2019-06-17  Jonathan Wakely  <jwakely@redhat.com>
2938
2939         * testsuite/20_util/bad_function_call/what.cc: Include <string> header
2940         for std::string.
2941         * testsuite/20_util/shared_ptr/cons/weak_ptr_expired.cc: Likewise.
2942         * testsuite/20_util/tuple/cons/allocator_with_any.cc: Include <memory>
2943         header for std::allocator.
2944         * testsuite/23_containers/array/tuple_interface/tuple_element.cc: Add
2945         using-declaration for std::size_t.
2946         * testsuite/23_containers/array/tuple_interface/tuple_size.cc:
2947         Likewise.
2948         * testsuite/23_containers/deque/cons/55977.cc: Include <istream> for
2949         std::istream.
2950         * testsuite/23_containers/vector/cons/55977.cc: Likewise.
2951         * testsuite/experimental/map/erasure.cc: Include <string> for
2952         std::string.
2953         * testsuite/experimental/unordered_map/erasure.cc: Likewise.
2954
2955 2019-06-14  Jonathan Wakely  <jwakely@redhat.com>
2956
2957         * include/experimental/type_traits (experimental::nonesuch): Use
2958         pragma to disable -Wctor-dtor-privacy warnings.
2959         * include/std/type_traits (__is_convertible_helper<From, To, false>)
2960         (__is_nt_convertible_helper<From, To, false>, __nonesuch): Likewise.
2961
2962         * include/std/version (__cpp_lib_bind_front): Add missing macro.
2963
2964 2019-06-12  Jonathan Wakely  <jwakely@redhat.com>
2965
2966         * include/std/algorithm (__cpp_lib_parallel_algorithm): Fix value.
2967         * include/std/memory (__cpp_lib_parallel_algorithm): Likewise.
2968         * include/std/numeric (__cpp_lib_parallel_algorithm): Likewise.
2969         * testsuite/25_algorithms/pstl/feature_test.cc: New test.
2970
2971         * include/std/variant (get<T>, get<N>, get_if<N>, get_if<T>)
2972         (variant::emplace): Change static_assert messages from "should be"
2973         to "must be".
2974         (hash<monostate>::operator()): Remove name of unused parameter.
2975
2976         * include/std/mutex (scoped_lock::~scoped_lock()): Use fold
2977         expression.
2978
2979         * include/Makefile.am: Add new <bits/charconv.h> header.
2980         * include/Makefile.in: Regenerate.
2981         * include/bits/basic_string.h (to_string(int), to_string(unsigned))
2982         (to_string(long), to_string(unsigned long), to_string(long long))
2983         (to_string(unsigned long long)): Rewrite to use __to_chars_10_impl.
2984         * include/bits/charconv.h: New header.
2985         (__detail::__to_chars_len): Move here from <charconv>.
2986         (__detail::__to_chars_10_impl): New function extracted from
2987         __detail::__to_chars_10.
2988         * include/std/charconv (__cpp_lib_to_chars): Add, but comment out.
2989         (__to_chars_unsigned_type): New class template that reuses
2990         __make_unsigned_selector_base::__select to pick a type.
2991         (__unsigned_least_t): Redefine as __to_chars_unsigned_type<T>::type.
2992         (__detail::__to_chars_len): Move to new header.
2993         (__detail::__to_chars_10): Add inline specifier. Move code doing the
2994         output to __detail::__to_chars_10_impl and call that.
2995         * include/std/version (__cpp_lib_to_chars): Add, but comment out.
2996         * testsuite/21_strings/basic_string/numeric_conversions/char/
2997         to_string.cc: Fix reference in comment. Remove unused variable.
2998         * testsuite/21_strings/basic_string/numeric_conversions/char/
2999         to_string_int.cc: New test.
3000
3001 2019-06-09  Edward Smith-Rowland  <3dw4rd@verizon.net>
3002
3003         Fix ConstexprIterator requirements tests - No constexpr algorithms!
3004         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
3005         Replace copy with hand-rolled loop.
3006         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
3007         Ditto.
3008
3009 2019-06-08  Edward Smith-Rowland  <3dw4rd@verizon.net>
3010
3011         Test for C++20 p0858 - ConstexprIterator requirements.
3012         * testsuite/21_strings/basic_string_view/requirements/constexpr_iter.cc:
3013         New test.
3014         * testsuite/23_containers/array/requirements/constexpr_iter.cc:
3015         New test.
3016
3017 2019-06-07  Thomas Rodgers  <trodgers@redhat.com>
3018
3019         Rename PSTL macro's consistent with libstdc++ (and llvm upstream
3020         project) standards.
3021         * include/bits/c++config: Rename all macros of the form __PSTL* to
3022         _PSTL*.
3023         * include/std/algorithm: Likewise.
3024         * include/std/execution: Likewise.
3025         * include/std/numeric: Likewise.
3026         * include/std/memory: Likewise.
3027         * include/pstl/glue_memory_impl.h: Likewise.
3028         * include/pstl/numeric_impl.h: Likewise.
3029         * include/pstl/glue_memory_defs.h: Likewise.
3030         * include/pstl/execution_defs.h: Likewise.
3031         * include/pstl/utils.h: Likewise.
3032         * include/pstl/algorithm_fwd.h: Likewise.
3033         * include/pstl/unseq_backend_simd.h: Likewise.
3034         * include/pstl/glue_execution_defs.h: Likewise.
3035         * include/pstl/algorithm_impl.h: Likewise.
3036         * include/pstl/parallel_impl.h: Likewise.
3037         * include/pstl/memory_impl.h: Likewise.
3038         * include/pstl/glue_numeric_defs.h: Likewise.
3039         * include/pstl/parallel_backend_utils.h: Likewise.
3040         * include/pstl/glue_algorithm_defs.h: Likewise.
3041         * include/pstl/parallel_backend.h: Likewise.
3042         * include/pstl/glue_numeric_impl.h: Likewise.
3043         * include/pstl/parallel_backend_tbb.h: Likewise.
3044         * include/pstl/numeric_fwd.h: Likewise.
3045         * include/pstl/glue_algorithm_impl.h: Likewise.
3046         * include/pstl/execution_impl.h: Likewise.
3047         * include/pstl/pstl_config.h: Likewise.
3048         * testsuite/util/pstl/pstl_test_config.h: Likewise.
3049         * testsuite/util/pstl/test_utils.h: Likewise.
3050         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc:
3051         Likewise.
3052         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc:
3053         Likewise.
3054         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc:
3055         Likewise.
3056         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: Likewise.
3057         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: Likewise.
3058         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: Likewise.
3059         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: Likewise.
3060         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc:
3061         Likewise.
3062         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: Likewise.
3063         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: Likewise.
3064         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: Likewise.
3065         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: Likewise.
3066         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc:
3067         Likewise.
3068         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: Likewise.
3069         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: Likewise.
3070         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: Likewise.
3071         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: Likewise.
3072         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc:
3073         Likewise.
3074         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: Likewise.
3075         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: Likewise.
3076         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc:
3077         Likewise.
3078         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc:
3079         Likewise.
3080         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: Likewise.
3081         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: Likewise.
3082         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc:
3083         Likewise.
3084         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc:
3085         Likewise.
3086         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc:
3087         Likewise.
3088         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc:
3089         Likewise.
3090         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc:
3091         Likewise.
3092         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc:
3093         Likewise.
3094         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc:
3095         Likewise.
3096         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc:
3097         Likewise.
3098         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc:
3099         Likewise.
3100         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc:
3101         Likewise.
3102         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc:
3103         Likewise.
3104         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: Likewise.
3105
3106         Rename header guards to be consistent with upstream project's
3107         conventions.
3108         * include/pstl/glue_memory_impl.h: Rename all macros of the form
3109         _PSTL_(.*)_H to _PSTL_\U\1_H.
3110         * include/pstl/numeric_impl.h: Likewise.
3111         * include/pstl/glue_memory_defs.h: Likewise.
3112         * include/pstl/execution_defs.h: Likewise.
3113         * include/pstl/utils.h: Likewise.
3114         * include/pstl/algorithm_fwd.h: Likewise.
3115         * include/pstl/unseq_backend_simd.h: Likewise.
3116         * include/pstl/glue_execution_defs.h: Likewise.
3117         * include/pstl/algorithm_impl.h: Likewise.
3118         * include/pstl/parallel_impl.h: Likewise.
3119         * include/pstl/memory_impl.h: Likewise.
3120         * include/pstl/glue_numeric_defs.h: Likewise.
3121         * include/pstl/parallel_backend_utils.h: Likewise.
3122         * include/pstl/glue_algorithm_defs.h: Likewise.
3123         * include/pstl/parallel_backend.h: Likewise.
3124         * include/pstl/glue_numeric_impl.h: Likewise.
3125         * include/pstl/parallel_backend_tbb.h: Likewise.
3126         * include/pstl/numeric_fwd.h: Likewise.
3127         * include/pstl/glue_algorithm_impl.h: Likewise.
3128         * include/pstl/execution_impl.h: Likewise.
3129         * include/pstl/pstl_config.h: Likewise.
3130         * testsuite/util/pstl/pstl_test_config.h: Likewise.
3131
3132         Synchronize libstdc++ parallel algorithms with upstream
3133         project.
3134         * include/pstl/algorithm_fwd.h: Synchronize with
3135         upstream PSTL project.
3136         * include/pstl/algorithm_impl.h: Likewise.
3137         * include/pstl/execution_defs.h: Likewise.
3138         * include/pstl/execution_impl.h: Likewise.
3139         * include/pstl/glue_algorithm_impl.h: Likewise.
3140         * include/pstl/glue_execution_defs.h: Likewise.
3141         * include/pstl/numeric_fwd.h: Likewise.
3142         * include/pstl/numeric_impl.h: Likewise.
3143         * include/pstl/parallel_backend.h: Likewise.
3144         * include/pstl/pstl_config.h: Likewise.
3145         * include/pstl/unseq_backend_simd.h: Likewise.
3146         * include/pstl/parallel_backend_serial.h: New file.
3147         * include/Makefile.am (pstl_headers): Add
3148         parallel_backend_serial.h.
3149         * include/Makefile.in: Regenerate.
3150
3151         Clean up non-conforming names
3152         * include/pstl/algorithm_impl.h (__parallel_set_union_op):
3153         Uglfiy copy_range1 and copy_range2
3154         (__pattern_walk2_n): Rename local n to __n
3155         * include/pstl/parallel_backend_tbb.h (struct __binary_no_op):
3156         Rename parameter _T to _Tp.
3157
3158         Integrate non-TBB serial backend support
3159         * include/bits/c++config: Adjust TBB detection logic to select serial
3160         PSTL backend if no TBB present.
3161         * testsuite/utils/pstl/test_utils.h: Remove check for
3162         _PSTL_USE_PAR_POLICIES
3163
3164 2019-06-07  Jonathan Wakely  <jwakely@redhat.com>
3165
3166         * testsuite/24_iterators/container_access.cc: Move dg-options before
3167         dg-do directive so the target check uses the -std option.
3168
3169         PR libstdc++/90770
3170         * configure: Regenerate.
3171         * src/Makefile.am (stamp-debug): Also test for missing makefile.
3172         * src/Makefile.in: Regenerate.
3173
3174 2019-06-06  Jonathan Wakely  <jwakely@redhat.com>
3175
3176         * include/std/array: Do not include <stdexcept>.
3177         * include/std/optional: Include <exception> and
3178         <bits/exception_defines.h> instead of <stdexcept>.
3179         * testsuite/20_util/function_objects/searchers.cc: Include <cctype>
3180         for std::isalnum.
3181         * testsuite/20_util/tuple/cons/deduction.cc: Include <memory> for
3182         std::allocator.
3183         * testsuite/23_containers/map/erasure.cc: Include <string>.
3184         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
3185
3186         * testsuite/23_containers/deque/requirements/dr438/assign_neg.cc: Add
3187         dg-prune-output for different C++98 diagnostic.
3188         * testsuite/23_containers/deque/requirements/dr438/constructor_1_neg.cc:
3189         Likewise.
3190         * testsuite/23_containers/deque/requirements/dr438/constructor_2_neg.cc:
3191         Likewise.
3192         * testsuite/23_containers/deque/requirements/dr438/insert_neg.cc:
3193         Likewise.
3194         * testsuite/23_containers/list/requirements/dr438/assign_neg.cc:
3195         Likewise.
3196         * testsuite/23_containers/list/requirements/dr438/constructor_1_neg.cc:
3197         Likewise.
3198         * testsuite/23_containers/list/requirements/dr438/constructor_2_neg.cc:
3199         Likewise.
3200         * testsuite/23_containers/list/requirements/dr438/insert_neg.cc:
3201         Likewise.
3202         * testsuite/23_containers/vector/requirements/dr438/assign_neg.cc:
3203         Likewise.
3204         * testsuite/23_containers/vector/requirements/dr438/
3205         constructor_1_neg.cc: Likewise.
3206         * testsuite/23_containers/vector/requirements/dr438/
3207         constructor_2_neg.cc: Likewise.
3208         * testsuite/23_containers/vector/requirements/dr438/insert_neg.cc:
3209         Likewise.
3210         * testsuite/libstdc++-prettyprinters/compat.cc: Do not run for C++98.
3211
3212         * testsuite/23_containers/unordered_map/requirements/debug_container.cc:
3213         Do not test allocator rebinding extension for C++2a.
3214         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
3215         dg-do directive for C++17 and C++2a.
3216
3217         * testsuite/23_containers/deque/requirements/explicit_instantiation/
3218         1_c++0x.cc: Remove redundant test.
3219         * testsuite/23_containers/deque/requirements/explicit_instantiation/
3220         2.cc: Use target selector instead of preprocessor condition.
3221         * testsuite/23_containers/deque/requirements/explicit_instantiation/
3222         3.cc: Do not run test for C++2a.
3223         * testsuite/23_containers/forward_list/requirements/
3224         explicit_instantiation/3.cc: Likewise.
3225         * testsuite/23_containers/forward_list/requirements/
3226         explicit_instantiation/5.cc: Do not test allocator rebinding extension
3227         for C++2a.
3228         * testsuite/23_containers/list/requirements/explicit_instantiation/
3229         1_c++0x.cc: Remove redundant test.
3230         * testsuite/23_containers/list/requirements/explicit_instantiation/
3231         2.cc: Use target selector instead of preprocessor condition.
3232         * testsuite/23_containers/list/requirements/explicit_instantiation/
3233         3.cc: Do not run test for C++2a.
3234         * testsuite/23_containers/list/requirements/explicit_instantiation/
3235         5.cc: Do not test allocator rebinding extension for C++2a.
3236         * testsuite/23_containers/map/requirements/explicit_instantiation/
3237         1_c++0x.cc: Remove redundant test.
3238         * testsuite/23_containers/map/requirements/explicit_instantiation/
3239         2.cc: Adjust comment.
3240         * testsuite/23_containers/map/requirements/explicit_instantiation/
3241         3.cc: Do not run test for C++2a.
3242         * testsuite/23_containers/map/requirements/explicit_instantiation/
3243         5.cc: Do not test allocator rebinding extension for C++2a.
3244         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
3245         1_c++0x.cc: Remove redundant test.
3246         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
3247         3.cc: Do not run test for C++2a.
3248         * testsuite/23_containers/multimap/requirements/explicit_instantiation/
3249         5.cc: Do not test allocator rebinding extension for C++2a.
3250         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
3251         3.cc: Do not run test for C++2a.
3252         * testsuite/23_containers/multiset/requirements/explicit_instantiation/
3253         5.cc: Do not test allocator rebinding extension for C++2a.
3254         * testsuite/23_containers/set/requirements/explicit_instantiation/3.cc:
3255         Do not run test for C++2a.
3256         * testsuite/23_containers/set/requirements/explicit_instantiation/
3257         1_c++0x.cc: Remove redundant test.
3258         * testsuite/23_containers/set/requirements/explicit_instantiation/5.cc:
3259         Do not test allocator rebinding extension for C++2a.
3260         * testsuite/23_containers/unordered_map/requirements/
3261         explicit_instantiation/3.cc: Likewise.
3262         * testsuite/23_containers/unordered_map/requirements/
3263         explicit_instantiation/5.cc: Do not test allocator rebinding extension
3264         for C++2a.
3265         * testsuite/23_containers/unordered_multimap/requirements/
3266         explicit_instantiation/3.cc: Do not run test for C++2a.
3267         * testsuite/23_containers/unordered_multimap/requirements/
3268         explicit_instantiation/5.cc: Do not test allocator rebinding extension
3269         for C++2a.
3270         * testsuite/23_containers/unordered_multiset/requirements/
3271         explicit_instantiation/3.cc: Do not run test for C++2a.
3272         * testsuite/23_containers/unordered_multiset/requirements/
3273         explicit_instantiation/5.cc: Do not test allocator rebinding extension
3274         for C++2a.
3275         * testsuite/23_containers/unordered_set/requirements/
3276         explicit_instantiation/3.cc: Do not run test for C++2a.
3277         * testsuite/23_containers/unordered_set/requirements/
3278         explicit_instantiation/5.cc: Do not test allocator rebinding extension
3279         for C++2a.
3280         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
3281         2.cc: Remove redundant test.
3282         * testsuite/23_containers/vector/ext_pointer/explicit_instantiation/
3283         3.cc: Do not run test for C++2a.
3284         * testsuite/23_containers/vector/requirements/explicit_instantiation/
3285         3.cc: Likewise.
3286
3287         * include/std/type_traits (is_empty, is_polymorphic, is_final)
3288         (is_abstract, is_aggregate): Remove static_assert.
3289         * testsuite/20_util/is_abstract/incomplete_neg.cc: Check for error
3290         from builtin only.
3291         * testsuite/20_util/is_aggregate/incomplete_neg.cc: Likewise. Add
3292         missing -std=gnu++17 option.
3293         * testsuite/20_util/is_empty/incomplete_neg.cc: New test.
3294         * testsuite/20_util/is_final/incomplete_neg.cc: New test.
3295         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: Check for error
3296         from builtin only.
3297
3298         * testsuite/18_support/set_terminate.cc: Do not run for C++98 mode.
3299         * testsuite/18_support/set_unexpected.cc: Likewise.
3300         * testsuite/20_util/is_nothrow_invocable/value.cc: Test converting to
3301         void.
3302         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix constexpr
3303         function to be valid in C++11.
3304         * testsuite/26_numerics/complex/proj.cc: Do not run for C++98 mode.
3305         * testsuite/experimental/names.cc: Do not run for C++98 mode. Do not
3306         include Library Fundamentals or Networking headers in C++11 mode.
3307         * testsuite/ext/char8_t/atomic-1.cc: Do not run for C++98 mode.
3308
3309         * include/std/tuple (_TC): Replace with _TupleConstraints.
3310         (_TupleConstraints): New helper for SFINAE constraints, with more
3311         expressive member functions to reduce duplication when used.
3312         (tuple::_TC2, tuple::_TMC, tuple::_TNTC): Remove.
3313         (tuple::_TCC): Replace dummy type parameter with bool non-type
3314         parameter that can be used to check the pack size.
3315         (tuple::_ImplicitDefaultCtor, tuple::_ExplicitDefaultCtor)
3316         (tuple::_ImplicitCtor, tuple::_ExplicitCtor): New alias templates for
3317         checking constraints in constructors.
3318         (tuple::__valid_args, tuple::_UseOtherCtor, tuple::__use_other_ctor):
3319         New SFINAE helpers.
3320         (tuple::tuple): Use new helpers to reduce repitition in constraints.
3321         (tuple::tuple(allocator_arg_t, const Alloc&)): Constrain.
3322         (tuple<T1, T2>::_TCC, tuple<T1, T2>::_ImplicitDefaultCtor)
3323         (tuple<T1, T2>::_ExplicitDefaultCtor, tuple<T1, T2>::_ImplicitCtor)
3324         (tuple<T1, T2>::_ExplicitCtor): New alias templates for checking
3325         constraints in constructors.
3326         (tuple::__is_alloc_arg()): New SFINAE helpers.
3327         (tuple<T1, T2>::tuple): Use new helpers to reduce repitition in
3328         constraints.
3329         (tuple<T1, T2>::tuple(allocator_arg_t, const Alloc&)): Constrain.
3330         * testsuite/20_util/tuple/cons/90700.cc: New test.
3331         * testsuite/20_util/tuple/cons/allocators.cc: Add default constructor
3332         to meet new constraint on allocator-extended default constructor.
3333
3334 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
3335
3336         * include/bits/stl_map.h (map): Disable static assert for C++98 mode.
3337         * include/bits/stl_multimap.h (multimap): Likewise.
3338
3339 2019-06-03  François Dumont  <fdumont@gcc.gnu.org>
3340
3341         Rename variables and cleanup comments.
3342         * include/bits/hashtable_policy.h
3343         * include/bits/hashtable.h
3344
3345 2019-06-03  Jonathan Wakely  <jwakely@redhat.com>
3346
3347         * doc/xml/manual/status_cxx2020.xml: Add missing row for P0920R2.
3348         Fix bgcolor for P0340R3.
3349         * doc/html/*: Regenerate.
3350
3351         PR libstdc++/90686
3352         * doc/xml/manual/status_cxx2014.xml: Document what's missing from
3353         <experimental/memory_resource>.
3354         * doc/xml/manual/status_cxx2020.xml: Document status of P1285R0,
3355         P0339R6, P0340R3, P1164R1 and P1357R1.
3356         * doc/html/*: Regenerate.
3357
3358         * doc/xml/manual/status_cxx2020.xml: Document P1463R1 status.
3359         * include/bits/forward_list.h [__cplusplus > 201703]: Enable
3360         allocator::value_type assertion for C++2a.
3361         * include/bits/hashtable.h: Likewise.
3362         * include/bits/stl_deque.h: Likewise.
3363         * include/bits/stl_list.h: Likewise.
3364         * include/bits/stl_map.h: Likewise.
3365         * include/bits/stl_multimap.h: Likewise.
3366         * include/bits/stl_multiset.h: Likewise.
3367         * include/bits/stl_set.h: Likewise.
3368         * include/bits/stl_vector.h: Likewise.
3369         * testsuite/23_containers/deque/48101-3_neg.cc: New test.
3370         * testsuite/23_containers/forward_list/48101-3_neg.cc: New test.
3371         * testsuite/23_containers/list/48101-3_neg.cc: New test.
3372         * testsuite/23_containers/map/48101-3_neg.cc: New test.
3373         * testsuite/23_containers/multimap/48101-3_neg.cc: New test.
3374         * testsuite/23_containers/multiset/48101-3_neg.cc: New test.
3375         * testsuite/23_containers/set/48101-3_neg.cc: New test.
3376         * testsuite/23_containers/unordered_map/48101-3_neg.cc: New test.
3377         * testsuite/23_containers/unordered_multimap/48101-3_neg.cc: New test.
3378         * testsuite/23_containers/unordered_multiset/48101-3_neg.cc: New test.
3379         * testsuite/23_containers/unordered_set/48101-3_neg.cc: New test.
3380         * testsuite/23_containers/vector/48101-3_neg.cc: New test.
3381
3382 2019-05-31  Gerald Pfeifer  <gerald@pfeifer.com>
3383
3384         * doc/xml/manual/allocator.xml: Move hoard.org back to http.
3385
3386 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
3387
3388         * include/std/tuple (tuple<>): Add noexcept to allocator-extended
3389         constructors.
3390         (tuple<T1, T2>::__nothrow_default_constructible()): New helper
3391         function.
3392         (tuple<T1, T2>::tuple(), explicit tuple<T1, T2>::tuple()): Use helper.
3393
3394 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
3395
3396         * src/c++98/bitmap_allocator.cc: Add using-declaration for size_t.
3397
3398         PR libstdc++/90682
3399         * libsupc++/eh_term_handler.cc: Include eh_term_handler.h to get
3400         definition of _GLIBCXX_DEFAULT_TERM_HANDLER.
3401         * libsupc++/eh_term_handler.h: New header defining
3402         _GLIBCXX_DEFAULT_TERM_HANDLER.
3403         * libsupc++/eh_terminate.cc: Include eh_term_handler.h.
3404         (set_terminate): Restore default handler when argument is null.
3405         (set_unexpected): Likewise.
3406         * testsuite/18_support/set_terminate.cc: New test.
3407         * testsuite/18_support/set_unexpected.cc: New test.
3408
3409         * include/backward/hashtable.h (size_t, ptrdiff_t)
3410         (forward_iterator_tag, input_iterator_tag, _Construct, _Destroy)
3411         (distance, vector, pair, __iterator_category): Remove
3412         using-declarations that add these names to namespace __gnu_cxx.
3413         * include/ext/bitmap_allocator.h (size_t, ptrdiff_t): Likewise.
3414         * include/ext/debug_allocator.h (size_t): Likewise.
3415         * include/ext/functional (size_t, unary_function, binary_function)
3416         (mem_fun1_t, const_mem_fun1_t, mem_fun1_ref_t, const_mem_fun1_ref_t):
3417         Likewise.
3418         * include/ext/malloc_allocator.h (size_t, ptrdiff_t): Likewise.
3419         * include/ext/memory (ptrdiff_t, pair, __iterator_category): Likewise.
3420         * include/ext/mt_allocator.h (size_t, ptrdiff_t): Likewise.
3421         * include/ext/new_allocator.h (size_t, ptrdiff_t): Likewise.
3422         * include/ext/numeric (iota): Fix outdated comment.
3423         * include/ext/pool_allocator.h (size_t, ptrdiff_t): Likewise.
3424         * include/ext/rb_tree (_Rb_tree, allocator): Likewise.
3425         * include/ext/rope (size_t, ptrdiff_t, allocator, _Destroy): Likewise.
3426         * include/ext/ropeimpl.h (size_t, printf, basic_ostream)
3427         (__throw_length_error, _Destroy, std::__uninitialized_fill_n_a):
3428         Likewise.
3429         * include/ext/slist (size_t, ptrdiff_t, _Construct, _Destroy)
3430         (allocator, __true_type, __false_type): Likewise.
3431
3432 2019-05-31  Antony Polukhin  <antoshkka@gmail.com>
3433
3434         PR libstdc++/71579
3435         * include/std/type_traits __type_identity, __is_complete_or_unbounded):
3436         New helpers for checking preconditions in traits.
3437         (is_trivial, is_trivially_copyable, is_standard_layout, is_pod)
3438         (is_literal_type, is_empty, is_polymorphic, is_final, is_abstract)
3439         (is_destructible, is_nothrow_destructible, is_constructible)
3440         (is_default_constructible, is_copy_constructible)
3441         (is_move_constructible, is_nothrow_default_constructible)
3442         (is_nothrow_constructible, is_nothrow_copy_constructible)
3443         (is_nothrow_move_constructible, is_copy_assignable, is_move_assignable)
3444         (is_nothrow_assignable, is_nothrow_copy_assignable)
3445         (is_nothrow_move_assignable, is_trivially_constructible)
3446         (is_trivially_copy_constructible, is_trivially_move_constructible)
3447         is_trivially_assignable, is_trivially_copy_assignable)
3448         (is_trivially_move_assignable, is_trivially_destructible)
3449         (alignment_of, is_swappable, is_nothrow_swappable, is_invocable)
3450         (is_invocable_r, is_nothrow_invocable)
3451         (has_unique_object_representations, is_aggregate): Add static_asserts
3452         to make sure that type traits are not misused with incomplete types.
3453         (__is_constructible_impl, __is_nothrow_default_constructible_impl)
3454         (__is_nothrow_constructible_impl, __is_nothrow_assignable_impl): New
3455         base characteristics without assertions that can be reused in other
3456         traits.
3457         * testsuite/20_util/is_complete_or_unbounded/memoization.cc: New test.
3458         * testsuite/20_util/is_complete_or_unbounded/memoization_neg.cc: New
3459         test.
3460         * testsuite/20_util/is_complete_or_unbounded/value.cc: New test.
3461         * testsuite/20_util/is_abstract/incomplete_neg.cc: New test.
3462         * testsuite/20_util/is_aggregate/incomplete_neg.cc: New test.
3463         * testsuite/20_util/is_class/value.cc: Check incomplete type.
3464         * testsuite/20_util/is_function/value.cc: Likewise.
3465         * testsuite/20_util/is_move_constructible/incomplete_neg.cc: New test.
3466         * testsuite/20_util/is_nothrow_move_assignable/incomplete_neg.cc: New
3467         test.
3468         * testsuite/20_util/is_polymorphic/incomplete_neg.cc: New test.
3469         * testsuite/20_util/is_reference/value.cc: Check incomplete types.
3470         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
3471         * testsuite/20_util/is_union/value.cc: Likewise.
3472         * testsuite/20_util/is_void/value.cc: Likewise.
3473         * testsuite/util/testsuite_tr1.h: Add incomplete union type.
3474
3475 2019-05-31  Jonathan Wakely  <jwakely@redhat.com>
3476
3477         * include/bits/random.h (random_device::_M_init(const char*, size_t)):
3478         Add new private member function.
3479         * src/c++11/cow-string-inst.cc (random_device::_M_init(const string&))
3480         (random_device::_M_init_pretr1(const string&)): Call new private
3481         member with string data.
3482         * src/c++11/random.cc (random_device::_M_init(const char*, size_t)):
3483         Define.
3484         * testsuite/26_numerics/random/random_device/cons/default-cow.cc: New
3485         test using COW strings.
3486         * testsuite/26_numerics/random/random_device/cons/default.cc: Generate
3487         a value from the device.
3488         * testsuite/26_numerics/random/random_device/cons/token.cc: Likewise.
3489         Fix typo in token string.
3490
3491 2019-05-30  Nina Dinka Ranns  <dinka.ranns@gmail.com>
3492
3493         LWG2788 basic_string spurious use of a default constructible allocator
3494         * include/bits/basic_string.tcc [_GLIBCXX_USE_CXX11_ABI]
3495         (basic_string::_M_replace_dispatch): Construct temporary string with
3496         the current allocator.
3497         * testsuite/21_strings/basic_string/allocator/char/lwg2788.cc: New.
3498         * testsuite/21_strings/basic_string/allocator/wchar_t/lwg2788.cc: New.
3499
3500 2019-05-30  Jonathan Wakely  <jwakely@redhat.com>
3501
3502         * doc/xml/manual/diagnostics.xml: Update list of headers that define
3503         exception classes.
3504         * doc/xml/manual/support.xml: Rewrite advice around NULL. Rewrite
3505         section about new/delete overloads. Improve section on verbose
3506         terminate handler.
3507         * doc/html/*: Regenerate.
3508
3509         * doc/xml/manual/status_cxx2020.xml: Add feature-test macro for
3510         P0811R3. Change status of P1353R0.
3511         * doc/html/*: Regenerate.
3512
3513         * doc/xml/manual/status_cxx2011.xml: Use <variablelist> for
3514         documentation of implementation-defined types for [thread.req.native].
3515         * doc/xml/manual/status_cxx2017.xml: Update documentation of
3516         implementation-defined strings for [variant.bad.access]. Fix typo in
3517         documentation of implementation-defined support for [fs.conform.9945].
3518         * doc/html/*: Regenerate.
3519
3520 2019-05-29  Jonathan Wakely  <jwakely@redhat.com>
3521
3522         PR libstdc++/85494
3523         * testsuite/26_numerics/random/random_device/cons/token.cc: Fix test
3524         that fails on mingw-w64.
3525
3526         PR libstdc++/88881
3527         * src/c++17/fs_ops.cc [_GLIBCXX_FILESYSTEM_IS_WINDOWS]
3528         (status(const path&, error_code&)): Use parent_path() to remove
3529         trailing slash.
3530         (symlink_status(const path&, error_code&)): Duplicate workaround for
3531         bug in _wstat for paths with trailing slash.
3532         * testsuite/27_io/filesystem/operations/remove_all.cc: Check path
3533         with trailing slash.
3534         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
3535         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
3536
3537         * src/c++17/fs_path.cc (path::parent_path()): Create whole path at
3538         once instead of building it iteratively.
3539
3540         * testsuite/util/testsuite_api.h: Remove names of unused parameters.
3541
3542         PR libstdc++/85494 use rdseed and rand_s in std::random_device
3543         * acinclude.m4 (GLIBCXX_CHECK_X86_RDSEED): Define macro to check if
3544         the assembler supports rdseed.
3545         * config.h.in: Regenerate.
3546         * configure: Regenerate.
3547         * configure.ac: Use GLIBCXX_CHECK_X86_RDSEED.
3548         * config/os/mingw32-w64/os_defines.h (_GLIBCXX_USE_CRT_RAND_S): Define.
3549         * doc/html/*: Regenerate.
3550         * doc/xml/manual/status_cxx2011.xml: Document new tokens.
3551         * include/bits/random.h (random_device::random_device()): Always call
3552         _M_init rather than _M_init_pretr1.
3553         (random_device::random_device(const string&)): Likewise.
3554         (random_device::operator()()): Always call _M_getval().
3555         (random_device::_M_file): Replace first member of union with an
3556         anonymous struct, with _M_file as its first member.
3557         * src/c++11/random.cc [_GLIBCXX_X86_RDRAND] (USE_RDRAND): Define.
3558         [_GLIBCXX_X86_RDSEED] (USE_RDSEED): Define.
3559         (USE_MT19937): Define if none of the above are defined.
3560         (USE_POSIX_FILE_IO): Define.
3561         (_M_strtoul): Remove.
3562         [USE_RDSEED] (__x86_rdseed): Define new function.
3563         [_GLIBCXX_USE_CRT_RAND_S] (__winxp_rand_s): Define new function.
3564         (random_device::_M_init(const string&)): Initialize new union members.
3565         Add support for "rdseed" and "rand_s" tokens. Decide what the
3566         "default" token does according to which USE_* macros are defined.
3567         [USE_POSIX_FILE_IO]: Store a file descriptor.
3568         [USE_MT19937]: Forward to _M_init_pretr1 instead.
3569         (random_device::_M_init_pretr1(const string&)) [USE_MT19937]: Inline
3570         code from _M_strtoul.
3571         [!USE_MT19937]: Call _M_init, transforming the old default token or
3572         numeric tokens to "default".
3573         (random_device::_M_fini()) [USE_POSIX_FILE_IO]: Use close not fclose.
3574         (random_device::_M_getval()): Use new union members to obtain a
3575         random number from the stored function pointer or file descriptor.
3576         [USE_MT19937]: Obtain a value from the mt19937 engine.
3577         (random_device::_M_getval_pretr1()): Call _M_getval().
3578         (random_device::_M_getentropy()) [USE_POSIX_FILE_IO]: Use _M_fd
3579         instead of fileno.
3580         [!USE_MT19937] (mersenne_twister): Do not instantiate when not needed.
3581         * testsuite/26_numerics/random/random_device/85494.cc: New test.
3582
3583 2019-05-28  Jonathan Wakely  <jwakely@redhat.com>
3584
3585         PR libstdc++/90634
3586         * include/experimental/bits/fs_path.h (path::path(path&&)): Only call
3587         _M_split_cmpts() for a path with multiple components.
3588         (path::_S_is_dir_sep()): Add missing 'static' keyword to function.
3589         * src/filesystem/path.cc (path::_M_split_cmpts()): Count number of
3590         components and reserve space in vector. Return early when there is
3591         only one component.
3592         * testsuite/27_io/filesystem/path/construct/90634.cc: New test.
3593         * testsuite/experimental/filesystem/path/construct/90634.cc: New test.
3594
3595         * testsuite/util/testsuite_fs.h (compare_paths): Use three-argument
3596         form of std::equals for C++11 compatibility.
3597
3598 2019-05-26  Gerald Pfeifer  <gerald@pfeifer.com>
3599
3600         * doc/xml/manual/appendix_contributing.xml: Update pointer to
3601         C++ standard at ansi.org.
3602
3603 2019-05-24  Jonathan Wakely  <jwakely@redhat.com>
3604
3605         * include/std/numeric (midpoint(T*, T*)): Fix incorrect result.
3606         * testsuite/26_numerics/midpoint/pointer.cc: Change "compile" test
3607         to "run".
3608
3609         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: Fix test.
3610         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused function.
3611
3612 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
3613
3614         * testsuite/20_util/function_objects/invoke/1.cc: Move C++17-specific
3615         tests to ...
3616         * testsuite/20_util/function_objects/invoke/3.cc: New test.
3617         * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Change
3618         "compile" test to "run".
3619
3620         * doc/xml/manual/intro.xml: Document LWG DR 2996 change.
3621         * doc/html/*: Regenerate.
3622         * include/bits/shared_ptr.h (shared_ptr(shared_ptr&&, T*)): Add
3623         rvalue aliasing constructor.
3624         (static_pointer_cast, const_pointer, dynamic_pointer_cast)
3625         (reinterpret_pointer_cast): Add overloads taking rvalues.
3626         * include/bits/shared_ptr_base.h (__shared_ptr(__shared_ptr&&, T*)):
3627         Add rvalue aliasing constructor.
3628         * testsuite/20_util/shared_ptr/casts/1.cc: Change "compile" test to
3629         "run" and check return values as well as types.
3630         * testsuite/20_util/shared_ptr/casts/reinterpret.cc: Likewise.
3631         * testsuite/20_util/shared_ptr/casts/rval.cc: New test.
3632         * testsuite/20_util/shared_ptr/cons/alias-rval.cc: New test.
3633         * testsuite/20_util/shared_ptr/cons/alias.cc: Remove unused return
3634         values.
3635
3636         * doc/xml/manual/evolution.xml: Document LWG DR 2921 change.
3637         * doc/xml/manual/intro.xml: Likewise.
3638         * include/std/future (__create_task_state): Add default arguments
3639         to make providing an allocator optional.
3640         (packaged_task::packaged_task(F&&)): Call __create_task_state directly
3641         instead of delegating to another constructor.
3642         (packaged_task::packaged_task(allocator_arg_t, const A&, ...)): Do not
3643         define allocator-extended constructors for C++17 and later.
3644         * testsuite/30_threads/packaged_task/cons/alloc.cc: Only run test for
3645         C++11 and C++14.
3646         * testsuite/30_threads/packaged_task/cons/alloc2.cc: Likewise.
3647         * testsuite/30_threads/packaged_task/cons/alloc_min.cc: Likewise.
3648         * testsuite/30_threads/packaged_task/uses_allocator.cc: Likewise.
3649
3650 2019-05-23  Hans-Peter Nilsson  <hp@axis.com>
3651
3652         * testsuite/26_numerics/random/poisson_distribution/operators/values.cc:
3653         Don't run the libstdc++/83237 part on simulator targets.
3654
3655 2019-05-23  Jonathan Wakely  <jwakely@redhat.com>
3656
3657         * doc/xml/manual/status_cxx2017.xml: Add feature test macro for
3658         P0040R3.
3659         * doc/html/*: Regenerate.
3660
3661         * include/experimental/any (__any_caster): Use RTTI if comparing
3662         addresses fails, to support non-unique addresses in shared libraries.
3663         * include/std/any (__any_caster): Likewise.
3664
3665         PR libstdc++/90220
3666         * include/experimental/any (__any_caster): Constrain to only be
3667         callable for object types. Use remove_cv_t instead of decay_t.
3668         If the type decays or isn't copy constructible, compare the manager
3669         function to a dummy specialization.
3670         (__any_caster): Add overload constrained for non-object types.
3671         (any::_Manager_internal<_Op>): Add dummy specialization.
3672         * testsuite/experimental/any/misc/any_cast.cc: Test function types
3673         and array types.
3674
3675 2019-05-22  Jonathan Wakely  <jwakely@redhat.com>
3676
3677         PR libstdc++/90557
3678         * src/c++17/fs_path.cc (path::_List::operator=(const _List&)): Fix
3679         reversed arguments to uninitialized_copy_n.
3680         * testsuite/27_io/filesystem/path/assign/copy.cc: Check that source
3681         is unchanged by copy assignment.
3682         * testsuite/util/testsuite_fs.h (compare_paths): Use std::equal to
3683         compare path components.
3684
3685         PR libstdc++/77691
3686         * include/experimental/memory_resource: Add system header pragma and
3687         do not define anything unless compiled as C++14 or later.
3688         (__resource_adaptor_common::__guaranteed_alignment): Remove.
3689         (__resource_adaptor_imp::do_allocate): If the requested alignment
3690         is a fundamental alignment then either allocate directly from _M_alloc
3691         or call the new _M_allocate function.
3692         (__resource_adaptor_imp::do_deallocate): Likewise for deallocation.
3693         (__resource_adaptor_imp::_M_allocate): New function that uses a copy
3694         of the allocator rebound to a POD type with the specified alignment.
3695         (__resource_adaptor_imp::_M_deallocate): Likewise for deallocation.
3696         * testsuite/experimental/memory_resource/new_delete_resource.cc:
3697         Adjust expected allocation sizes.
3698         * testsuite/experimental/memory_resource/resource_adaptor.cc: Remove
3699         xfail for Solaris x86.
3700
3701 2019-05-21  Thomas Rodgers  <trodgers@redhat.com>
3702
3703         LWG 3062 - Unnecessary decay_t in is_execution_policy_v
3704         * include/pstl/execution_defs.h (__enable_if_execution_policy):
3705         Use std::__remove_cvref_t when building with GCC.
3706
3707 2019-05-21  Jonathan Wakely  <jwakely@redhat.com>
3708
3709         PR libstdc++/90252
3710         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
3711         Use "additional_flags" to pass -ltbb to v3_target_compile command.
3712         Use check_v3_target_prop_cached to cache the result of the test.
3713
3714         * doc/xml/manual/shared_ptr.xml: Fix names of lock policy constants.
3715
3716 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
3717
3718         PR libstdc++/90252
3719         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
3720         Changed v3_target_compile check from preprocess to executable.
3721         Added "-ltbb" to v3_target_compile flags.
3722
3723 2019-05-20  Thomas Rodgers  <trodgers@redhat.com>
3724
3725         * testsuite/lib/libstdc++.exp (check_effective_target_tbb-backend):
3726         Add check for Thread Building Blocks 2018 or later.
3727
3728 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
3729
3730         * testsuite/experimental/names.cc: Only include Networking TS headers
3731         on targets with the necessary Gthreads support.
3732
3733 2019-05-20  Marek Polacek  <polacek@redhat.com>
3734
3735         CWG 2094 - volatile scalars are trivially copyable.
3736         PR c++/85679
3737         * testsuite/20_util/is_trivially_copyable/value.cc: Change the expected
3738         result for volatile int.
3739
3740 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
3741
3742         * testsuite/17_intro/names.cc: Do not check 'ptr' on Solaris.
3743         * testsuite/experimental/names.cc: Include <experimental/filesystem>
3744         conditionally.
3745
3746         PR c++/90532 Ensure __is_constructible(T[]) is false
3747         * include/std/type_traits (__do_is_default_constructible_impl)
3748         (__is_default_constructible_atom, __is_default_constructible_safe):
3749         Remove.
3750         (is_default_constructible): Use is_constructible.
3751         * testsuite/20_util/is_constructible/value.cc: Check int[] case.
3752         * testsuite/20_util/is_default_constructible/value.cc: Likewise.
3753         * testsuite/20_util/is_trivially_constructible/value.cc: Likewise.
3754         * testsuite/20_util/is_trivially_default_constructible/value.cc:
3755         Likewise.
3756
3757 2019-05-20  Pádraig Brady  <pbrady@fb.com>
3758
3759         * libstdc++-v3/include/ext/new_allocator.h (deallocate): Pass the size
3760         to the deallocator with -fsized-deallocation.
3761
3762 2019-05-20  Jonathan Wakely  <jwakely@redhat.com>
3763
3764         * testsuite/experimental/memory_resource/new_delete_resource.cc: Fix
3765         test by passing correct alignment to deallocate function.
3766
3767 2019-05-18  Jonathan Wakely  <jwakely@redhat.com>
3768
3769         PR libstdc++/90520
3770         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
3771         Raise exception if unique_ptr tuple member has unknown structure.
3772         * python/libstdcxx/v6/xmethods.py (UniquePtrGetWorker.__call__):
3773         Adjust worker to support new __uniq_ptr_data base class. Do not
3774         assume field called _M_head_impl is the first tuple element.
3775
3776 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
3777
3778         * include/bits/stl_deque.h
3779         (_Deque_iterator<>::__ptr_to): Remove, use std::__ptr_rebind.
3780         (_Deque_base(_Deque_base&&, const allocator_type&)): New.
3781         (_Deque_base::_Deque_impl_data): New.
3782         (_Deque_base::_Deque_impl): Inherit latter.
3783         (_Deque_base::_Deque_impl::_M_swap_data): Move...
3784         (_Deque_base::_Deque_impl_data::_M_swap_data): ... here.
3785         (_Deque_base::_Deque_impl()): Add noexcept qualification.
3786         (_Deque_base::_Deque_impl(_Deque_impl&&, _Tp_alloc_type&&)): New.
3787         (_Deque_base::_Deque_impl::_M_get_Tp_allocator()): Remove static_cast.
3788         (deque<>::deque()): Default.
3789         (deque<>::deque(deque&&)): Default.
3790         (deque<>::deque(deque&&, const allocator_type&, false_type)): New.
3791         (deque<>::deque(deque&&, const allocator_type&, true_type)): New.
3792         (deque<>::deque(deque&&, const allocator_type&)): Delegate to latters.
3793         (deque<>::deque<_It>(_It, _It, const allocator_type&)): Use
3794         _M_range_initialize.
3795         (deque<>::assign<_It>(_It, _It)): Use _M_assign_aux.
3796         (deque<>::resize(size_type, const value_type&)): Share a single
3797         implementation.
3798         (deque<>::insert<_It>(const_iterator, _It, _It)): Use
3799         _M_range_insert_aux.
3800         [__cplusplus >= 201103L](_M_initialize_dispatch): Remove.
3801         [__cplusplus >= 201103L](_M_assign_dispatch): Remove.
3802         [__cplusplus >= 201103L](_M_insert_dispatch): Remove.
3803         * testsuite/23_containers/deque/allocator/default_init.cc: New.
3804
3805 2019-05-17  Jonathan Wakely  <jwakely@redhat.com>
3806
3807         PR libstdc++/90246
3808         * include/std/variant (holds_alternative, get, get_if): Improve
3809         static assertion messages.
3810         (bad_variant_access::bad_variant_access()): Change default message.
3811         (__throw_bad_variant_access(bool)): New overload.
3812         (get): Use new overload.
3813         (visit, visit<R>): Improve exception message.
3814
3815         * testsuite/20_util/variant/compile.cc: Fix narrowing test for ILP32
3816         targets. Add more cases from P0608R3.
3817         * testsuite/20_util/variant/run.cc: Add more cases from P0608R3.
3818
3819         * include/bits/random.h (seed_seq::param): Fix non-reserved name.
3820         * include/experimental/type_traits (is_detected_exact)
3821         (is_detected_exact_v): Likewise.
3822         * include/pstl/execution_defs.h (is_execution_policy)
3823         (is_execution_policy_v, __enable_if_execution_policy): Likewise.
3824         * include/pstl/execution_impl.h (__policy_traits): Likewise.
3825         * testsuite/17_intro/names.cc: Check for more non-reserved names.
3826         * testsuite/experimental/names.cc: New test.
3827
3828         PR libstdc++/85965
3829         * include/bits/hashtable.h (_Hashtable::~_Hashtable()): Remove static
3830         assertions from the destructor.
3831         * include/bits/hashtable_policy.h (_Hash_code_base::_M_hash_code):
3832         Move static_assert for hash function to here.
3833         (_Hash_table_base::_M_equals): Move static_assert for equality
3834         predicate to here.
3835         * include/bits/stl_tree.h (_Rb_tree::_S_value(_Const_Link_type)):
3836         Remove.
3837         (_Rb_tree::_S_key(_Const_Link_type)): Move assertions here. Access
3838         the value directly instead of calling _S_value.
3839         (_Rb_tree::_S_value(_Const_Base_ptr)): Remove.
3840         (_Rb_tree::_S_key(_Const_Base_ptr)): Do downcast and forward to
3841         _S_key(_Const_Link_type).
3842         * testsuite/23_containers/set/85965.cc: Check construction,
3843         destruction, assignment and size() do not trigger the assertions.
3844         * testsuite/23_containers/unordered_set/85965.cc: Likewise.
3845         * testsuite/23_containers/map/48101_neg.cc: Call find and adjust
3846         expected errors.
3847         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
3848         * testsuite/23_containers/multiset/48101_neg.cc: Likewise.
3849         * testsuite/23_containers/set/48101_neg.cc: Likewise.
3850         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
3851         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
3852         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
3853         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
3854
3855         * include/bits/invoke.h [__cplusplus < 201703L] (__invoke_r<void>):
3856         Use _GLIBCXX14_CONSTEXPR because void functions cannot be constexpr
3857         in C++11.
3858
3859         * doc/xml/manual/status_cxx2020.xml: Update P0608R3, P0777R1, and
3860         P1165R1 entries.
3861         * doc/html/*: Regenerate.
3862         * include/std/tuple (make_from_tuple): Use remove_reference_t instead
3863         of decay_t (P0777R1).
3864
3865 2019-05-17  François Dumont  <fdumont@gcc.gnu.org>
3866
3867         Move from state of allocators (LWG2593)
3868         * include/bits/stl_deque.h
3869         (_Deque_base(_Deque_base&&, false_type)): Remove.
3870         (_Deque_base(_Deque_base&&, true_type)): Remove.
3871         (_Deque_base(_Deque_base&&)): Adapt.
3872         (_Deque_base::_M_move_impl()): Remove.
3873         * testsuite/util/testsuite_allocator.h
3874         (propagating_allocator(propagating_allocator&&)): Preserve move from
3875         state.
3876         * testsuite/23_containers/deque/allocator/move_assign.cc (test02):
3877         Adapt.
3878         * testsuite/23_containers/forward_list/allocator/move_assign.cc (test02):
3879         Adapt.
3880         * testsuite/23_containers/list/allocator/move_assign.cc (test02): Adapt.
3881         * testsuite/23_containers/map/allocator/move_assign.cc (test02): Adapt.
3882         * testsuite/23_containers/multimap/allocator/move_assign.cc (test02):
3883         Adapt.
3884         * testsuite/23_containers/multiset/allocator/move_assign.cc (test02):
3885         Adapt.
3886         * testsuite/23_containers/set/allocator/move_assign.cc (test02): Adapt.
3887         * testsuite/23_containers/unordered_map/allocator/move_assign.cc
3888         (test02): Adapt.
3889         * testsuite/23_containers/unordered_multimap/allocator/move_assign.cc
3890         (test02): Adapt.
3891         * testsuite/23_containers/unordered_multiset/allocator/move_assign.cc
3892         (test02): Adapt.
3893         * testsuite/23_containers/unordered_set/allocator/move_assign.cc
3894         (test02): Adapt.
3895         * testsuite/23_containers/vector/allocator/move_assign.cc (test02):
3896         Adapt.
3897         * testsuite/23_containers/vector/bool/allocator/move_assign.cc (test02):
3898         Adapt.
3899         * testsuite/21_strings/basic_string/allocator/char/move_assign.cc
3900         (test02): Adapt.
3901         * testsuite/21_strings/basic_string/allocator/wchar_t/move_assign.cc
3902         (test02): Adapt.
3903
3904 2019-05-16  Jonathan Wakely  <jwakely@redhat.com>
3905
3906         * src/c++17/fs_ops.cc (absolute(const path&, error_code&))
3907         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Remove bogus assertion.
3908
3909         * include/std/variant (__overload_set): Remove.
3910         (_Arr): New helper.
3911         (_Build_FUN): New class template to define a single FUN overload,
3912         with specializations to prevent unwanted conversions, as per P0608R3.
3913         (_Build_FUNs): New class template to build an overload set of FUN.
3914         (_FUN_type): New alias template to perform overload resolution.
3915         (__accepted_type): Use integer_constant base for failure case. Use
3916         _FUN_type for successful case.
3917         (variant::__accepted_index): Use _Tp instead of _Tp&&.
3918         (variant::variant(_Tp&&)): Likewise.
3919         (variant::operator=(_Tp&&)): Likewise.
3920
3921         * include/std/variant (_Variant_storage<false, _Types...>::_M_reset):
3922         Replace raw visitation with a runtime check for the valueless state
3923         and a non-raw visitor.
3924         (_Variant_storage<false, _Types...>::_M_reset_impl): Remove.
3925         (variant::index()): Remove branch.
3926         (variant::swap(variant&)): Use valueless_by_exception() instead of
3927         comparing the index to variant_npos, and add likelihood attribute.
3928
3929         * include/bits/hashtable_policy.h (_Equal_helper): Remove.
3930         (_Hashtable_base::_Equal_hash_code): Define new class template.
3931         (_Hashtable_base::_M_equals): Use _Equal_hash_code instead of
3932         _Equal_helper.
3933
3934         * include/bits/hashtable_policy.h (_Hashtable_ebo_helper::_S_get):
3935         Replace with _M_get non-static member function.
3936         (_Hashtable_ebo_helper::_S_cget): Replace with _M_cget non-static
3937         member function.
3938         (_Hash_code_base, _Local_iterator_base, _Hashtable_base):
3939         (_Hashtable_alloc): Adjust to use non-static members of EBO helper.
3940
3941         * include/bits/hashtable_policy.h (_Hash_code_base::_M_swap): Use
3942         _S_get accessors for members in EBO helpers.
3943         (_Hash_code_base::_M_extract(), _Hash_code_base::_M_ranged_hash())
3944         (_Hash_code_base::_M_h1(), _Hash_code_base::_M_h2()): Remove non-const
3945         overloads.
3946         (_Hashtable_base::_M_swap): Use _S_get accessors for members in EBO
3947         helpers.
3948         (_Hashtable_base::_M_eq()): Remove non-const overload.
3949
3950 2019-05-15  Jonathan Wakely  <jwakely@redhat.com>
3951
3952         * include/std/variant (visit, visit<R>): Qualify calls to __do_visit.
3953
3954 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3955
3956         * testsuite/util/testsuite_allocator.h (NullablePointer::operator bool):
3957         Fix return value.
3958
3959 2019-05-14  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
3960
3961         * config/os/solaris/solaris2.10: Move to ...
3962         * config/os/solaris: ... this.
3963         * configure.host (os_include_dir): Adapt.
3964         (abi_baseline_pair): Remove Solaris 10 handling.
3965         * config/abi/post/i386-solaris2.10: Remove.
3966         * config/abi/post/sparc-solaris2.10: Remove.
3967         * config/abi/post/i386-solaris2.11: Rename to ...
3968         * config/abi/post/i386-solaris: ... this.
3969         * config/abi/post/sparc-solaris2.11: Rename to ...
3970         * config/abi/post/sparc-solaris: ... this.
3971
3972         * libsupc++/new_opa.cc [_GLIBCXX_HAVE_MEMALIGN] [__sun]: Remove
3973         workaround.
3974
3975         * testsuite/ext/enc_filebuf/char/13598.cc: Remove *-*-solaris2.10
3976         xfail.
3977
3978 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
3979
3980         * include/std/variant (__visit_with_index): Remove typedef.
3981         (__deduce_visit_result): New tag type.
3982         (__raw_visit, __raw_idx_visit): New helper functions for "raw"
3983         visitation of possibly-valueless variants, forwarding to __do_visit
3984         with the relevant tag type.
3985         (_Variant_storage<false, _Types...>::_M_reset_impl): Use __raw_visit
3986         and make lambda return void.
3987         (__variant_construct): Likewise.
3988         (_Copy_assign_base::operator=, _Move_assign_base::operator=): Use
3989         __raw_idx_visit and make lambda return void.
3990         (_Multi_array::__untag_result): Add metafunction to check the function
3991         pointer type for a tag type that dictates the kind of visitation.
3992         (_Multi_array<_Ret(*)(_Visitor, _Variants...), __first, __rest...>):
3993         Use decltype(auto) instead of tagged function pointer type.
3994         (__gen_vtable_impl): Remove bool non-type parameter and unused
3995         _Variant_tuple parameter.
3996         (__gen_vtable_impl::__visit_invoke_impl): Remove.
3997         (__gen_vtable_impl::__do_visit_invoke): Remove.
3998         (__gen_vtable_impl::__do_visit_invoke_r): Remove.
3999         (__gen_vtable_impl::__visit_invoke): Use if-constexpr and __invoke_r
4000         for the visit<R> case, rather than dispatching to separate functions.
4001         (_VARIANT_RELATION_FUNCTION_TEMPLATE): Use __raw_idx_visit and make
4002         lambda return void.
4003         (variant::swap): Likewise.
4004         (__do_visit): Replace two non-type template parameters with a single
4005         type parameter, so that the caller must specify the visitor's return
4006         type (or one of the tag types).
4007         (visit): Deduce a return type from the visitor and use the
4008         __deduce_visit_result tag to enforce that all overloads return the
4009         same type.
4010         (visit<R>): Call __do_visit<R> with explicit result type.
4011         (__variant_hash_call_base_impl::operator()): Use __raw_visit and make
4012         lambda return void.
4013
4014 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
4015
4016         nonesuch is insufficiently useless (lwg2996)
4017         * include/std/type_traits (struct __nonesuch): Added private base
4018         class to make __nonesuch not an aggregate and removed deleted default
4019         constructor.
4020         * include/bits/stl_pair.h (struct __nonesuch_no_braces): Removed.
4021         (operator=(const pair&)): Use __nonesuch instead of
4022         __nonesuch_no_braces.
4023         (operator=(pair&&)): Likewise
4024         * include/std/tuple (operator=(const tuple&)): Use __nonesuch instead
4025         of __nonesuch_no_braces.
4026         (operator=(tuple&&)): Likewise
4027         * include/experimental/type_traits (struct nonesuch): Added private
4028         base class to make nonesuch not an aggregate and removed deleted
4029         default constructor.
4030         * testsuite/20_util/nonesuch/nonesuch.cc: New.
4031         * testsuite/experimental/type_traits/nonesuch.cc: New.
4032
4033 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
4034
4035         * include/bits/std_function.h (_Simple_type_wrapper): Remove.
4036         (_Function_handler): Remove partial specializations for void return
4037         types and pointers to member.
4038         (_Function_handler::_M_manager): Adapt to removal of
4039         _Simple_type_wrapper.
4040         (_Function_handler::_M_invoke): Use __invoke_r instead of __invoke.
4041         * include/std/functional (_Bind_result::__enable_if_void)
4042         (_Bind_result::__disable_if_void): Remove sfinae helpers.
4043         (_Bind_result::__call): Use __invoke_r and remove overloads for void
4044         return types.
4045         * include/std/future (__future_base::_Task_state::_M_run)
4046         (__future_base::_Task_state::_M_run_delayed): Use __invoke_r and
4047         change return type of lambda expressions.
4048
4049         * include/bits/invoke.h (__invoke_r): Define new function implementing
4050         the INVOKE<R> pseudo-function.
4051         * testsuite/20_util/function_objects/invoke/1.cc: Add more tests.
4052         * testsuite/20_util/function_objects/invoke/2.cc: New test.
4053
4054         * include/std/type_traits (__is_nt_convertible_helper): Define it
4055         unconditionally, not only for C++20.
4056         (__is_nothrow_convertible): Define internal trait for use in C++11.
4057         (__is_nt_invocable_impl: Fix by using __is_nothrow_convertible.
4058         (is_invocable_r_v, is_nothrow_invocable_r_v): Add missing parameter.
4059         * testsuite/20_util/is_nothrow_convertible/value_ext.cc: New test.
4060         * testsuite/20_util/is_nothrow_convertible/value.cc: Check with type
4061         that has nothrow explicit conversion but potentially-throwing implicit
4062         conversion.
4063         * testsuite/20_util/is_nothrow_invocable/value.cc: Likewise.
4064         * testsuite/20_util/is_nothrow_invocable/value_ext.cc: Fix helper
4065         function to only consider implicit conversions.
4066         * testsuite/20_util/tuple/cons/noexcept_specs.cc: Add comment.
4067
4068         * include/std/iterator: Include <iosfwd> instead of <istream> and
4069         <ostream>.
4070
4071         * include/bits/stl_tree.h (_Rb_tree::erase(const Key*, const Key*)):
4072         Remove unused, non-standard function.
4073
4074         * include/bits/regex.h (match_results::max_size()): Adjust return
4075         value to account for prefix/suffix/unmatched subs.
4076         (match_results::_M_resize(unsigned int)): Use _Base_type::assign to
4077         reset the contained sub matches.
4078         (match_results::_M_establish_failed_match(_Bi_iter)): Add new member
4079         function to set result state following a failed match.
4080         * include/bits/regex.tcc (__regex_algo_impl): Remove loop to set
4081         sub_match states after _M_resize. Use _M_establish_failed_match.
4082
4083         PR libstdc++/69724
4084         * include/std/thread (thread::_State_impl, thread::_S_make_state):
4085         Replace single _Callable parameter with variadic _Args pack, to
4086         forward them directly to the tuple of decayed copies.
4087         * testsuite/30_threads/thread/cons/69724.cc: New test.
4088
4089 2019-05-14  Nina Dinka Ranns  <dinka.ranns@gmail.com>
4090
4091         Inconsistency wrt Allocators in basic_string assignment (LWG2579)
4092         * include/bits/basic_string.h: (operator=(const basic_string&):
4093         Move allocator decision to assign.
4094         (assign(const basic_string&)): Move allocator decision here.
4095         * testsuite/21_strings/basic_string/allocator/char/copy_assign.cc:
4096         Add tests.
4097         * testsuite/21_strings/basic_string/allocator/wchar_t/copy_assign.cc:
4098         Add tests.
4099
4100 2019-05-14  Jonathan Wakely  <jwakely@redhat.com>
4101
4102         * testsuite/util/testsuite_allocator.h (memory_resource)
4103         (default_resource_mgr): Fix indentation.
4104
4105         * testsuite/20_util/allocator_traits/members/allocate_hint_nonpod.cc:
4106         Use operator-> to access raw pointer member.
4107         * testsuite/23_containers/vector/59829.cc: Likewise.
4108         * testsuite/23_containers/vector/bool/80893.cc: Likewise.
4109         * testsuite/libstdc++-prettyprinters/cxx11.cc: Use NullablePointer.
4110         * testsuite/util/testsuite_allocator.h (NullablePointer): New utility
4111         for tests.
4112         (PointerBase, PointerBase_void): Derive from NullablePointer and use
4113         its constructors and equality operators. Change converting
4114         constructors to use operator-> to access private member of the other
4115         pointer type.
4116         (PointerBase_void::operator->()): Add, for access to private member.
4117         (operator-(PointerBase, PointerBase)): Change to hidden friend.
4118         (operator==(PointerBase, PointerBase)): Remove.
4119         (operator!=(PointerBase, PointerBase)): Remove.
4120
4121         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__): Do
4122         not assume field called _M_head_impl is the first tuple element.
4123         * testsuite/libstdc++-prettyprinters/compat.cc: Make tuple
4124         implementation more accurate.
4125         * testsuite/libstdc++-prettyprinters/cxx11.cc: Check unique_ptr with
4126         empty pointer type and non-empty deleter.
4127
4128         LWG 2899 - Make is_move_constructible correct for unique_ptr
4129         * include/bits/unique_ptr.h (__uniq_ptr_impl): Add move constructor,
4130         move assignment operator.
4131         (__uniq_ptr_impl::release(), __uniq_ptr_impl::reset(pointer)): Add.
4132         (__uniq_ptr_data): New class template with conditionally deleted
4133         special members.
4134         (unique_ptr, unique_ptr<T[], D>): Change type of data member from
4135         __uniq_ptr_impl<T, D> to __uniq_ptr_data<T, D>. Define move
4136         constructor and move assignment operator as defaulted.
4137         (unique_ptr::release(), unique_ptr<T[], D>::release()): Forward to
4138         __uniq_ptr_impl::release().
4139         (unique_ptr::reset(pointer), unique_ptr<T[], D>::reset<U>(U)): Forward
4140         to __uniq_ptr_impl::reset(pointer).
4141         * python/libstdcxx/v6/printers.py (UniquePointerPrinter.__init__):
4142         Check for new __uniq_ptr_data type.
4143         * testsuite/20_util/unique_ptr/dr2899.cc: New test.
4144
4145 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
4146
4147         PR libstdc++/90454.cc path construction from void*
4148         * include/bits/fs_path.h (path::_Path): Use remove_pointer so that
4149         pointers to void are rejected as well as void.
4150         * include/experimental/bits/fs_path.h (path::_Path): Likewise.
4151         * testsuite/27_io/filesystem/path/construct/80762.cc: Also check
4152         pointers to void.
4153         * testsuite/experimental/filesystem/path/construct/80762.cc: Likewise.
4154
4155         * doc/xml/manual/policy_data_structures.xml: Comment out stray
4156         <remark> elements. Fix formatting of bibliography references.
4157
4158 2019-05-13  Edward Smith-Rowland  <3dw4rd@verizon.net>
4159
4160         * doc/xml/manual/status_cxx2020.xml: Document P0811R3 status.
4161
4162 2019-05-13  Jonathan Wakely  <jwakely@redhat.com>
4163
4164         Remove Profile Mode, deprecated since 7.1.0
4165         * doc/Makefile.am: Remove XML file for profile mode docs.
4166         * doc/Makefile.in: Regenerate.
4167         * doc/xml/authors.xml: Remove authors of profile mode docs.
4168         * doc/xml/manual/appendix_contributing.xml: Remove mention of profile
4169         mode.
4170         * doc/xml/manual/debug.xml: Likewise.
4171         * doc/xml/manual/evolution.xml: Document removal of profile mode.
4172         * doc/xml/manual/profile_mode.xml: Remove profile mode docs.
4173         * doc/xml/manual/spine.xml: Remove profile mode author credit.
4174         * doc/xml/manual/test.xml: Remove docs for dg-require-profile-mode
4175         directive.
4176         * doc/xml/manual/using.xml: Remove docs for profile mode headers and
4177         macro.
4178         * doc/html/*: Regenerate.
4179         * include/Makefile.am: Remove profile mode headers.
4180         * include/Makefile.in: Regenerate.
4181         * include/bits/c++config (std::__profile): Remove namespace.
4182         [_GLIBCXX_PROFILE]: Remove checks for macro.
4183         * include/profile/array: Remove.
4184         * include/profile/base.h: Remove.
4185         * include/profile/bitset: Remove.
4186         * include/profile/deque: Remove.
4187         * include/profile/forward_list: Remove.
4188         * include/profile/impl/profiler.h: Remove.
4189         * include/profile/impl/profiler_algos.h: Remove.
4190         * include/profile/impl/profiler_container_size.h: Remove.
4191         * include/profile/impl/profiler_hash_func.h: Remove.
4192         * include/profile/impl/profiler_hashtable_size.h: Remove.
4193         * include/profile/impl/profiler_list_to_slist.h: Remove.
4194         * include/profile/impl/profiler_list_to_vector.h: Remove.
4195         * include/profile/impl/profiler_map_to_unordered_map.h: Remove.
4196         * include/profile/impl/profiler_node.h: Remove.
4197         * include/profile/impl/profiler_state.h: Remove.
4198         * include/profile/impl/profiler_trace.h: Remove.
4199         * include/profile/impl/profiler_vector_size.h: Remove.
4200         * include/profile/impl/profiler_vector_to_list.h: Remove.
4201         * include/profile/iterator_tracker.h: Remove.
4202         * include/profile/list: Remove.
4203         * include/profile/map: Remove.
4204         * include/profile/map.h: Remove.
4205         * include/profile/multimap.h: Remove.
4206         * include/profile/multiset.h: Remove.
4207         * include/profile/ordered_base.h: Remove.
4208         * include/profile/set: Remove.
4209         * include/profile/set.h: Remove.
4210         * include/profile/unordered_base.h: Remove.
4211         * include/profile/unordered_map: Remove.
4212         * include/profile/unordered_set: Remove.
4213         * include/profile/vector: Remove.
4214         * scripts/run_doxygen: Do not process profile mode headers.
4215         * testsuite/23_containers/array/element_access/60497.cc: Don't use
4216         profile mode type.
4217         * testsuite/23_containers/array/specialized_algorithms/swap_cxx17.cc:
4218         Remove dg-skip-if for profile mode.
4219         * testsuite/23_containers/forward_list/capacity/1.cc: Remove
4220         preprocessor check for profile mode.
4221         * testsuite/23_containers/list/capacity/29134.cc: Likewise.
4222         * testsuite/23_containers/map/modifiers/extract.cc: Remove dg-skip-if
4223         for profile mode.
4224         * testsuite/23_containers/map/modifiers/insert_or_assign/1.cc:
4225         Likewise.
4226         * testsuite/23_containers/map/modifiers/try_emplace/1.cc: Likewise.
4227         * testsuite/23_containers/multimap/modifiers/extract.cc: Likewise.
4228         * testsuite/23_containers/multiset/modifiers/extract.cc: Likewise.
4229         * testsuite/23_containers/set/modifiers/extract.cc: Likewise.
4230         * testsuite/23_containers/unordered_map/modifiers/extract.cc:
4231         Likewise.
4232         * testsuite/23_containers/unordered_multimap/modifiers/extract.cc:
4233         Likewise.
4234         * testsuite/23_containers/unordered_multiset/modifiers/extract.cc:
4235         Likewise.
4236         * testsuite/23_containers/unordered_set/modifiers/extract.cc:
4237         Likewise.
4238         * testsuite/23_containers/vector/bool/capacity/29134.cc: Remove
4239         preprocessor check for profile mode.
4240         * testsuite/23_containers/vector/bool/modifiers/insert/31370.cc:
4241         Likewise.
4242         * testsuite/23_containers/vector/modifiers/insert_vs_emplace.cc:
4243         Remove dg-skip-if for profile mode.
4244         * testsuite/25_algorithms/binary_search/partitioned.cc: Likewise.
4245         * testsuite/25_algorithms/equal_range/partitioned.cc: Likewise.
4246         * testsuite/25_algorithms/lexicographical_compare/71545.cc: Likewise.
4247         * testsuite/25_algorithms/lower_bound/partitioned.cc: Likewise.
4248         * testsuite/25_algorithms/upper_bound/partitioned.cc: Likewise.
4249         * testsuite/Makefile.am: Remove profile_flags variable and
4250         * testsuite/Makefile.am: Remove profile_flags variable and
4251         check-profile target.
4252         * testsuite/Makefile.in: Regenerate.
4253         * testsuite/ext/profile/all.cc: Remove.
4254         * testsuite/ext/profile/mutex_extensions_neg.cc: Remove.
4255         * testsuite/ext/profile/profiler_algos.cc: Remove.
4256         * testsuite/ext/profile/replace_new.cc: Remove.
4257         * testsuite/ext/throw_allocator/deallocate_global.cc: Remove
4258         preprocessor check for profile mode.
4259         * testsuite/ext/throw_allocator/deallocate_local.cc: Likewise.
4260         * testsuite/lib/libstdc++.exp (check_v3_target_profile_mode): Remove.
4261         (check_v3_target_normal_mode): Do not check for profile mode macro.
4262         * testsuite/libstdc++-prettyprinters/80276.cc: Remove dg-skip-if for
4263         profile mode.
4264         * testsuite/libstdc++-prettyprinters/compat.cc: Likewise.
4265         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
4266         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
4267         * testsuite/libstdc++-prettyprinters/debug.cc: Likewise.
4268         * testsuite/libstdc++-prettyprinters/debug_cxx11.cc: Likewise.
4269         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
4270         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
4271         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
4272         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
4273         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
4274
4275         Remove array_allocator extension, deprecated since 4.9.0
4276         * doc/xml/manual/allocator.xml: Remove documentation for
4277         array_allocator.
4278         * doc/xml/manual/evolution.xml: Document array_allocator removal.
4279         * doc/xml/manual/using.xml: Remove header from documentation.
4280         * include/Makefile.am: Remove <ext/array_allocator.h> header.
4281         * include/Makefile.in: Regenerate.
4282         * include/ext/array_allocator.h: Remove.
4283         * include/precompiled/extc++.h: Do not include removed header.
4284         * testsuite/ext/array_allocator/1.cc: Remove.
4285         * testsuite/ext/array_allocator/2.cc: Remove.
4286         * testsuite/ext/array_allocator/26875.cc: Remove.
4287         * testsuite/ext/array_allocator/3.cc: Remove.
4288         * testsuite/ext/array_allocator/check_deallocate_null.cc: Remove.
4289         * testsuite/ext/array_allocator/check_delete.cc: Remove.
4290         * testsuite/ext/array_allocator/check_new.cc: Remove.
4291         * testsuite/ext/array_allocator/variadic_construct.cc: Remove.
4292         * testsuite/ext/headers.cc: Do not include removed header.
4293
4294 2019-05-11  François Dumont  <fdumont@gcc.gnu.org>
4295
4296         * include/bits/stl_bvector.h
4297         (operator==(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4298         Make hidden friend.
4299         (operator<(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4300         Likewise.
4301         (operator!=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4302         Likewise.
4303         (operator>(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4304         Likewise.
4305         (operator<=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4306         Likewise.
4307         (operator>=(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4308         Likewise.
4309         (operator-(const _Bit_iterator_base&, const _Bit_iterator_base&)):
4310         Likewise.
4311         (_Bit_iterator::operator+(difference_type)): Likewise and allow NRVO
4312         copy elision.
4313         (_Bit_iterator::operator-(difference_type)): Likewise.
4314         (operator+(ptrdiff_t, const _Bit_iterator&)): Make hidden friend.
4315         (_Bit_const_iterator::operator+(difference_type)): Likewise and allow
4316         NRVO copy elision.
4317         (_Bit_const_iterator::operator-(difference_type)): Likewise.
4318         (operator+(ptrdiff_t, const _Bit_const_iterator&)): Make hidden friend.
4319
4320 2019-05-10  Jonathan Wakely  <jwakely@redhat.com>
4321
4322         PR libstdc++/81266
4323         * testsuite/util/thread/all.h: Do not use remove_pointer for
4324         std::thread::native_handle_type.
4325
4326         PR libstdc++/90397
4327         * include/std/variant (_Variant_storage<false, Types...>::_M_storage())
4328         (_Variant_storage<true, Types...>::_M_reset()))
4329         (_Variant_storage<true, Types...>::_M_storage())): Add noexcept.
4330         (__get_storage): Likewise.
4331         (variant): Add noexcept to friend declarations for __get and
4332         __get_storage.
4333
4334         PR libstdc++/90388
4335         * include/bits/unique_ptr.h (default_delete, default_delete<T[]>):
4336         Use _Require for constraints.
4337         (operator>(nullptr_t, const unique_ptr<T,D>&)): Implement exactly as
4338         per the standard.
4339         (__uniq_ptr_hash): New base class with conditionally-disabled call
4340         operator.
4341         (hash<unique_ptr<T,D>>): Derive from __uniq_ptr_hash.
4342         * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
4343         * testsuite/20_util/unique_ptr/hash/90388.cc: New test.
4344
4345         * include/bits/shared_ptr.h: Improve docs.
4346         * include/bits/shared_ptr_base.h: Likewise.
4347         * include/bits/stl_uninitialized.h: Likewise.
4348         * include/bits/unique_ptr.h: Likewise.
4349         * libsupc++/new: Likewise.
4350
4351 2019-05-09  François Dumont  <fdumont@gcc.gnu.org>
4352
4353         * include/bits/stl_deque.h
4354         (operator==(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4355         Make hidden friend.
4356         (operator!=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4357         Likewise.
4358         (operator<(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4359         Likewise.
4360         (operator<=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4361         Likewise.
4362         (operator>(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4363         Likewise.
4364         (operator>=(const _Deque_iterator<>&, const _Deque_iterator<>&)):
4365         Likewise.
4366         (_Deque_iterator<>::operator+(difference_type)): Likewise and allow NRVO
4367         copy elision.
4368         (_Deque_iterator<>::operator-(difference_type)): Likewise.
4369
4370 2019-05-08  François Dumont  <fdumont@gcc.gnu.org>
4371
4372         PR libstdc++/90277
4373         * testsuite/23_containers/unordered_multiset/insert/24061-multiset.cc
4374         (test01): Reserve for number of insertions to avoid rehash during test.
4375         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
4376         (test01): Likewise.
4377         * testsuite/23_containers/unordered_multimap/insert/24061-multimap.cc
4378         (test01): Likewise.
4379         (test02): Likewise.
4380         (test03): Likewise.
4381
4382 2019-05-08  Jonathan Wakely  <jwakely@redhat.com>
4383
4384         * include/experimental/bits/fs_path.h: Improve docs.
4385         * include/experimental/bits/net.h: Fix wrong header name in comment.
4386         Do not document implementation details.
4387         * include/experimental/netfwd: Fix doxygen grouping.
4388
4389 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
4390
4391         * include/bits/stl_pair.h: Improve docs.
4392         * include/std/tuple: Likewise.
4393
4394         * doc/doxygen/doxygroups.cc (std::literals): Add documentation for
4395         inline namespace.
4396         * include/std/chrono: Improve docs.
4397         * include/std/ratio: Do not document implementation details.
4398         * testsuite/20_util/ratio/cons/cons_overflow_neg.cc: Adjust dg-error
4399         line numbers.
4400         * testsuite/20_util/ratio/operations/ops_overflow_neg.cc: Likewise.
4401
4402         PR libstdc++/89102
4403         * doc/xml/manual/intro.xml: Document DR 2408 and 2465 changes.
4404         * include/std/chrono (__duration_common_type_wrapper): Replace with ...
4405         (__duration_common_type): New helper.
4406         (common_type<chrono::duration<R1, P2>, chrono::duration<R2, P2>>): Use
4407         __duration_common_type.
4408         (__timepoint_common_type_wrapper): Replace with ...
4409         (__timepoint_common_type): New helper.
4410         (common_type<chrono::time_point<C, D2>, chrono::time_point<C, D2>>):
4411         Use __time_point_common_type.
4412         * include/std/type_traits (common_type<>): Define, as per LWG 2408.
4413         (__common_type_impl): If either argument is transformed by decay,
4414         use the common_type of the decayed types.
4415         (__common_type_impl<_Tp, _Up, _Tp, _Up>): If the types are already
4416         decayed, use __do_common_type_impl to get the common_type.
4417         (common_type<_Tp>): Use common_type<_Tp, _Tp>.
4418         (__do_member_type_wrapper, __member_type_wrapper)
4419         (__expanded_common_type_wrapper): Remove.
4420         (__common_type_pack, __common_type_fold): New helpers.
4421         (common_type<_Tp, _Up, _Vp...>): Use new helpers instead of
4422         __member_type_wrapper and __expanded_common_type_wrapper.
4423         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
4424         Test zero-length template argument list.
4425         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
4426         Test single argument cases and argument types that should decay.
4427         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
4428         Adjust expected error.
4429         * testsuite/20_util/duration/literals/range_neg.cc: Use zero for
4430         dg-error lineno.
4431         * testsuite/20_util/duration/requirements/typedefs_neg1.cc: Likewise.
4432         * testsuite/20_util/duration/requirements/typedefs_neg2.cc: Likewise.
4433         * testsuite/20_util/duration/requirements/typedefs_neg3.cc: Likewise.
4434
4435         * doc/xml/manual/intro.xml: Fix DR 2537 and DR 2566 confusion.
4436
4437 2019-05-01  Nina Dinka Ranns  <dinka.ranns@gmail.com>
4438
4439         Make allocator propagation more consistent for
4440         operator+(basic_string) (P1165R1)
4441         * include/bits/basic_string.h
4442         (operator+(basic_string&&, basic_string&&): Changed resulting
4443         allocator to always be the one from the first parameter.
4444         * include/bits/basic_string.tcc
4445         (operator+(const _CharT*, const basic_string&)): Changed
4446         resulting allocator to be SOCCC on the second parameter's allocator.
4447         (operator+(_CharT, const basic_string&)): Likewise.
4448         * testsuite/21_strings/basic_string/allocator/char/operator_plus.cc:
4449         New.
4450         * testsuite/21_strings/basic_string/allocator/wchar_t/operator_plus.cc:
4451         New.
4452
4453 2019-05-07  Jonathan Wakely  <jwakely@redhat.com>
4454
4455         * include/bits/regex.h: Improve docs.
4456         * include/bits/regex.tcc: Do not document implementation details.
4457
4458         * testsuite/19_diagnostics/error_code/hash.cc: New test.
4459
4460 2019-05-06  François Dumont  <fdumont@gcc.gnu.org>
4461
4462         * python/libstdcxx/v6/printers.py (add_one_template_type_printer):
4463         Add type printer for container types in std::__debug namespace.
4464         * testsuite/lib/gdb-test.exp (whatis-regexp-test): New.
4465         (gdb-tests): Use distinct parameters for the type of test and use of
4466         regex.
4467         (gdb-test): Check for regex test even if 'whatis' test.
4468         * testsuite/libstdc++-prettyprinters/80276.cc: Adapt for _GLIBCXX_DEBUG
4469         mode.
4470         * testsuite/libstdc++-prettyprinters/cxx11.cc: Likewise.
4471         * testsuite/libstdc++-prettyprinters/cxx17.cc: Likewise.
4472         * testsuite/libstdc++-prettyprinters/libfundts.cc: Likewise.
4473         * testsuite/libstdc++-prettyprinters/simple.cc: Likewise.
4474         * testsuite/libstdc++-prettyprinters/simple11.cc: Likewise.
4475         * testsuite/libstdc++-prettyprinters/whatis.cc: Likewise.
4476         * testsuite/libstdc++-prettyprinters/whatis2.cc: Likewise.
4477
4478 2019-05-04  Jonathan Wakely  <jwakely@redhat.com>
4479
4480         * include/std/system_error (error_category): Fix comment.
4481
4482         PR libstdc++/90299
4483         * src/c++17/fs_ops.cc (absolute(const path&)): Report an error if the
4484         argument is an empty path.
4485         (absolute(const path&, error_code&)): Use invalid_argument as error
4486         code instead of no_such_file_or_directory.
4487         * testsuite/27_io/filesystem/operations/absolute.cc: Check handling
4488         of non-existent paths and empty paths with both overloads of absolute.
4489
4490         * include/std/system_error (error_category, error_code)
4491         (error_condition): Improve docs.
4492         * libsupc++/exception: Add missing @addtogroup Doxygen command.
4493         * libsupc++/exception_ptr.h (exception_ptr): Link equality operators
4494         to class documentation. Suppress documentation for implementation
4495         details.
4496         * libsupc++/nested_exception.h (throw_with_nested, rethrow_if_nested):
4497         Suppress documentation for implementation details.
4498
4499         * include/std/system_error (error_code): Remove friend declaration
4500         for hash<error_code>.
4501         (hash<error_code>::operator()): Use public member functions to access
4502         value and category.
4503         (hash<error_condition>::operator()): Use address of category, not
4504         its object representation.
4505         * src/c++11/compatibility-c++0x.cc (hash<error_code>::operator()):
4506         Use public member functions to access value and category.
4507         * testsuite/19_diagnostics/error_condition/hash.cc: New test.
4508
4509 2019-05-04  François Dumont  <fdumont@gcc.gnu.org>
4510
4511         * include/bits/hashtable.h (_Hashtable<>::rehash): Review comment.
4512         * include/bits/hashtable_policy.h
4513         (_Prime_rehash_policy::_M_bkt_for_elements): Use __builtin_ceill.
4514         (_Power2_rehash_policy::_M_bkt_for_elements): Likewise.
4515         (_Power2_rehash_policy::_M_next_bkt): Enforce returning a result not
4516         smaller than input value rather than always greater. Preserve
4517         _M_next_resize if called with 0 input. Use __builtin_floorl.
4518         (_Power2_rehash_policy::_M_need_rehash): Rehash only if number of
4519         elements + number of insertions is greater than _M_next_resize. Start
4520         with 11 buckets if not told otherwise. Use __builtin_floorl.
4521         (_Rehash_base<>::reserve): Use rehash policy _M_bkt_for_elements.
4522         * src/c++11/hashtable_c++0x.cc (_Prime_rehash_policy::_M_next_bkt):
4523         Preserve _M_next_resize if called with 0 input. Use __builtin_floorl.
4524         (_Prime_rehash_policy::_M_need_rehash): Start with 11 buckets if not
4525         told otherwise. Use __builtin_floorl.
4526         * testsuite/23_containers/unordered_set/hash_policy/71181.cc: Adapt test
4527         to also validate _Power2_rehash_policy.
4528         * testsuite/23_containers/unordered_set/hash_policy/power2_rehash.cc:
4529         Adapt.
4530
4531 2019-05-03  Jonathan Wakely  <jwakely@redhat.com>
4532
4533         PR libstdc++/61761
4534         * testsuite/26_numerics/complex/proj.cc: Don't assume <cmath> defines
4535         std::copysign.
4536
4537         PR libstdc++/52119
4538         * include/ext/numeric_traits.h (__glibcxx_min): Avoid integer
4539         overflow warning with -Wpedantic -Wsystem-headers.
4540
4541 2019-05-02  Jonathan Wakely  <jwakely@redhat.com>
4542
4543         PR libstdc++/90314
4544         * include/bits/c++config (_GLIBCXX_NOEXCEPT_IF): Use variadic macro.
4545         * include/bits/move.h (swap): Remove extra parentheses.
4546
4547         * include/experimental/bits/lfts_config.h: Improve doc markup.
4548         * include/experimental/optional: Improve docs.
4549         (_Has_addressof_mem, _Has_addressof_free, _Has_addressof)
4550         (__constexpr_addressof): Remove.
4551         (optional::operator->()): Use std::__addressof().
4552         * include/std/optional (optional::operator->()): Adjust whitespace.
4553         * testsuite/experimental/optional/constexpr/observers/2.cc: Check
4554         that operator-> is still constexpr with overloaded operator&. Change
4555         to compile-only test.
4556         * testsuite/experimental/optional/constexpr/observers/3.cc: Change to
4557         compile-only test.
4558
4559         * include/bits/shared_ptr.h: Improve docs.
4560         * include/bits/shared_ptr_atomic.h: Likewise.
4561         * include/bits/unique_ptr.h: Likewise. Adjust whitespace.
4562
4563         * include/bits/basic_string.h: Fix iterator/index confusion in
4564         Doxygen comments.
4565         * include/bits/range_access.h: Fix Doxygen warnings.
4566         * include/bits/refwrap.h: Do not document implementation details.
4567         (ref, cref): Group docs with reference_wrapper.
4568         * include/std/fstream: Fix Doxygen markup.
4569         * libsupc++/initializer_list (begin, end): Group docs with
4570         initializer_list.
4571
4572         * doc/doxygen/user.cfg.in: Set MARKDOWN_SUPPORT=YES.
4573
4574         * include/bits/unique_lock.h: Fix/improve doxygen markup.
4575         * include/std/mutex: Likewise.
4576         * include/std/shared_mutex: Likewise.
4577
4578         * include/bits/fs_dir.h: Fix/improve doxygen markup.
4579         * include/bits/fs_fwd.h: Likewise.
4580         * include/bits/fs_ops.h: Likewise.
4581         * include/bits/fs_path.h: Likewise.
4582         * include/std/filesystem: Likewise.
4583
4584         * include/experimental/bits/net.h: Fix/improve doxygen markup.
4585         * include/experimental/buffer: Likewise.
4586         * include/experimental/executor: Likewise.
4587         * include/experimental/internet: Likewise.
4588         * include/experimental/io_context: Likewise.
4589         * include/experimental/net: Likewise.
4590         * include/experimental/netfwd: Likewise.
4591         * include/experimental/socket: Likewise.
4592         * include/experimental/timer: Likewise.
4593
4594         * doc/doxygen/doxygroups.cc: Move description of experimental group
4595         here.
4596         * include/experimental/algorithm: Add to libfund-ts doc group.
4597         * include/experimental/any: Likewise. Do not document implementation
4598         details.
4599         * include/experimental/array: Add to libfund-ts doc group.
4600         * include/experimental/bits/lfts_config.h: Define libfund-ts doc group
4601         for Library Fundamentals.
4602         * include/experimental/chrono: Add to libfund-ts doc group.
4603         * include/experimental/deque: Likewise.
4604         * include/experimental/forward_list: Likewise.
4605         * include/experimental/functional: Likewise.
4606         * include/experimental/iterator: Likewise.
4607         * include/experimental/list: Likewise.
4608         * include/experimental/map: Likewise.
4609         * include/experimental/memory: Likewise.
4610         * include/experimental/memory_resource: Likewise. Improve docs.
4611         details.
4612         * include/experimental/numeric: Add to libfund-ts doc group.
4613         * include/experimental/optional: Likewise.
4614         * include/experimental/propagate_const: Likewise.
4615         * include/experimental/random: Likewise.
4616         * include/experimental/ratio: Likewise.
4617         * include/experimental/regex: Likewise.
4618         * include/experimental/set: Likewise.
4619         * include/experimental/source_location: Likewise.
4620         * include/experimental/string: Likewise.
4621         * include/experimental/string_view: Likewise.
4622         * include/experimental/system_error: Likewise.
4623         * include/experimental/tuple: Likewise.
4624         * include/experimental/type_traits: Likewise.
4625         * include/experimental/unordered_map: Likewise.
4626         * include/experimental/unordered_set: Likewise.
4627         * include/experimental/utility: Likewise.
4628         * include/experimental/vector: Likewise.
4629         * testsuite/experimental/any/misc/any_cast_neg.cc: Adjust dg-error.
4630         * testsuite/experimental/array/neg.cc: Adjust dg-error.
4631         * testsuite/experimental/propagate_const/assignment/move_neg.cc:
4632         Likewise.
4633         * testsuite/experimental/propagate_const/cons/move_neg.cc: Likewise.
4634         * testsuite/experimental/propagate_const/requirements2.cc: Likewise.
4635         * testsuite/experimental/propagate_const/requirements3.cc: Likewise.
4636         * testsuite/experimental/propagate_const/requirements4.cc: Likewise.
4637         * testsuite/experimental/propagate_const/requirements5.cc: Likewise.
4638
4639         * include/experimental/bits/fs_dir.h: Fix Doxygen markup.
4640         * include/experimental/bits/fs_fwd.h: Improve docs.
4641         * include/experimental/bits/fs_ops.h: fix Doxygen markup.
4642         * include/experimental/bits/fs_path.h: Likewise.
4643         (path, filesystem_error, u8path): Improve docs.
4644         * include/experimental/filesystem: Link to docs for TS.
4645
4646         * config/allocator/new_allocator_base.h (__allocator_base): Add
4647         workaround for Doxygen bug #6945.
4648         * include/std/memory: Improve docs. Define group for pointer safety.
4649         * include/std/scoped_allocator: Improve docs. Use "undocumented"
4650         conditional to suppress documentation for implementation details.
4651
4652         * include/bits/specfun.h: Improve docs.
4653         * include/tr1/cmath: Likewise. Fix nesting of preprocessor conditions
4654         and namespaces.
4655
4656         * doc/doxygen/doxygroups.cc (std::tr2, std::__gnu_cxx): Improve docs.
4657         (std::experimental): Add docs.
4658         * doc/doxygen/user.cfg.in (PREDEFINED): Expand macros for __cxx11
4659         namespace to nothing when generating docs.
4660         * include/bits/regex_constants.h (std::regex_constants): Improve docs.
4661         * include/std/chrono (std::chrono): Likewise.
4662         * include/std/functional (std::placeholders): Likewise.
4663         * include/std/thread (std::this_thread): Likewise.
4664
4665         * include/parallel/settings.h: Fix Doxygen markup.
4666
4667         * include/ext/pb_ds/detail/bin_search_tree_/*_imps.hpp: Do not define
4668         anything unless PB_DS_CLASS_C_DEC is defined.
4669         * include/ext/pb_ds/detail/binary_heap_/*_imps.hpp: Likewise.
4670         * include/ext/pb_ds/detail/binomial_heap_/*_imps.hpp: Likewise.
4671         * include/ext/pb_ds/detail/binomial_heap_base_/*_imps.hpp: Likewise.
4672         * include/ext/pb_ds/detail/cc_hash_table_map_/*_imps.hpp: Likewise.
4673         * include/ext/pb_ds/detail/gp_hash_table_map_/*_imps.hpp: Likewise.
4674         * include/ext/pb_ds/detail/hash_fn/*_imp.hpp: Likewise.
4675         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/*_imps.hpp:
4676         Likewise.
4677         * include/ext/pb_ds/detail/list_update_map_/*_imps.hpp: Likewise.
4678         * include/ext/pb_ds/detail/ov_tree_map_/*_imps.hpp: Likewise.
4679         * include/ext/pb_ds/detail/pairing_heap_/*_imps.hpp: Likewise.
4680         * include/ext/pb_ds/detail/pat_trie_/*_imps.hpp: Likewise.
4681         * include/ext/pb_ds/detail/rb_tree_map_/*_imps.hpp: Likewise.
4682         * include/ext/pb_ds/detail/rc_binomial_heap_/*_imps.hpp: Likewise.
4683         * include/ext/pb_ds/detail/resize_policy*_imp.hpp: Likewise.
4684         * include/ext/pb_ds/detail/splay_tree_/*_imps.hpp: Likewise.
4685         * include/ext/pb_ds/detail/thin_heap_/*_imps.hpp: Likewise.
4686         * include/ext/pb_ds/detail/trie_policy*_imp.hpp: Likewise.
4687         * include/ext/pb_ds/detail/unordered_iterator/const_iterator.hpp:
4688         Likewise.
4689         * include/ext/pb_ds/detail/unordered_iterator/iterator.hpp: Likewise.
4690         * include/ext/pb_ds/detail/unordered_iterator/point_const_iterator.hpp:
4691         Likewise.
4692         * include/ext/pb_ds/detail/unordered_iterator/point_iterator.hpp:
4693         Likewise.
4694
4695         * doc/doxygen/user.cfg.in: Regenerate with Doxygen 1.8.14 and set
4696         GROUP_NESTED_COMPOUNDS=YES and SORT_BY_SCOPE_NAME=NO. Add various
4697         _GLIBCXX_xxx macros and __attribute__(X) to PREDEFINED macros that
4698         Doxygen expands.
4699
4700 2019-05-01  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
4701
4702         * config/abi/post/i386-solaris2.10/baseline_symbols.txt: Regenerate.
4703         * config/abi/post/i386-solaris2.10/amd64/baseline_symbols.txt: Likewise.
4704         * config/abi/post/i386-solaris2.11/baseline_symbols.txt: Likewise.
4705         * config/abi/post/i386-solaris2.11/amd64/baseline_symbols.txt: Likewise.
4706         * config/abi/post/sparc-solaris2.10/baseline_symbols.txt: Likewise.
4707         * config/abi/post/sparc-solaris2.10/sparcv9/baseline_symbols.txt:
4708         Likewise.
4709         * config/abi/post/sparc-solaris2.11/baseline_symbols.txt: Likewise.
4710         * config/abi/post/sparc-solaris2.11/sparcv9/baseline_symbols.txt:
4711         Likewise.
4712
4713 2019-05-01  Jonathan Wakely  <jwakely@redhat.com>
4714
4715         PR libstdc++/61761
4716         * include/std/complex (__complex_proj): Return parameter unchanged.
4717         [_GLIBCXX_USE_C99_COMPLEX] (__complex_proj): Change overloads for
4718         floating-point types to take std::complex arguments.
4719         [_GLIBCXX_USE_C99_MATH_TR1] (__complex_proj): Add overloads for
4720         floating-point types.
4721         * testsuite/26_numerics/complex/proj.cc: New test.
4722
4723 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
4724
4725         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Change _Lock_policyE2 exports
4726         to _Lock_policyE[012].
4727         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
4728
4729 2019-04-30  Jonathan Wakely  <jwakely@redhat.com>
4730
4731         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Remove
4732         macros accidentally left in.
4733         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Remove
4734         unnecessary -lstdc++fs option. Fix test for mingw.
4735         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
4736         Fix test for mingw.
4737
4738 2019-04-30  Jakub Jelinek  <jakub@redhat.com>
4739
4740         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: Update.
4741
4742 2019-04-29  Jonathan Wakely  <jwakely@redhat.com>
4743
4744         * include/bits/stl_algo.h (generate_n): Adjust doxygen comment.
4745
4746         * include/bits/move.h (swap(T&, T&), swap(T (&)[N], T (&)[N])): Use
4747         _GLIBCXX_NOEXCEPT_IF to simplify declarations.
4748
4749         PR libstdc++/71312
4750         * src/c++11/shared_ptr.cc (get_mutex): Align pool mutexes to 64 bytes.
4751
4752         * include/bits/stl_bvector.h (vector<bool>::empty()): Add nodiscard
4753         attribute.
4754
4755         * include/bits/stl_iterator_base_types.h (_Iter_base): Remove unused
4756         class template and partial specialization.
4757
4758         PR libstdc++/87982
4759         * include/bits/stl_algo.h (generate_n): Convert _Size parameter to
4760         an integral type.
4761         * include/bits/stl_algobase.h (__size_to_integer): New overloaded
4762         functions to convert a value to an integral type.
4763         (__fill_n_a, __fill_n_a): Assert that __n is already an integral type.
4764         (fill_n): Convert _Size parameter to an integral type.
4765         * testsuite/25_algorithms/fill_n/87982.cc: New test.
4766         * testsuite/25_algorithms/fill_n/87982_neg.cc: New test.
4767         * testsuite/25_algorithms/fill_n/dr426.cc: New test.
4768         * testsuite/25_algorithms/generate_n/87982.cc: New test.
4769         * testsuite/25_algorithms/generate_n/87982_neg.cc: New test.
4770         * testsuite/25_algorithms/generate_n/dr426.cc: New test.
4771
4772 2019-04-28  Nina Dinka Ranns  <dinka.ranns@gmail.com>
4773
4774         Adding noexcept-specification on tuple constructors (LWG 2899)
4775         * libstdc++-v3/include/std/tuple:
4776         (tuple()): Add noexcept-specification.
4777         (tuple(const _Elements&...)): Likewise
4778         (tuple(_UElements&&...)): Likewise
4779         (tuple(const tuple<_UElements...>&)): Likewise
4780         (tuple(tuple<_UElements...>&&)): Likewise
4781         (tuple(const _T1&, const _T2&)): Likewise
4782         (tuple(_U1&&, _U2&&)): Likewise
4783         (tuple(const tuple<_U1, _U2>&): Likewise
4784         (tuple(tuple<_U1, _U2>&&): Likewise
4785         (tuple(const pair<_U1, _U2>&): Likewise
4786         (tuple(pair<_U1, _U2>&&): Likewise
4787         * libstdc++-v3/testsuite/20_util/tuple/cons/noexcept_specs.cc: New
4788
4789 2019-04-27  Marc Glisse  <marc.glisse@inria.fr>
4790
4791         PR libstdc++/87106
4792         * include/bits/stl_uninitialized.h (__relocate_object_a): Mark the
4793         arguments with __restrict.
4794
4795 2019-04-26  H.J. Lu  <hongjiu.lu@intel.com>
4796
4797         * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
4798
4799 2019-04-26  Jonathan Wakely  <jwakely@redhat.com>
4800
4801         * include/experimental/bits/fs_path.h
4802         (path::_S_convert_loc<_InputIterator>): Create const std::string to
4803         avoid redundant call to _S_convert_loc with non-const pointers.
4804
4805         * testsuite/20_util/variant/run.cc: Use a new Hashable type to test
4806         hashing, because pmr::string depends on _GLIBCXX_USE_CXX11_ABI==1.
4807         * testsuite/21_strings/basic_string/hash/hash.cc
4808         [!_GLIBCXX_USE_CXX11_ABI]: Don't test pmr strings.
4809         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc
4810         [!_GLIBCXX_USE_CXX11_ABI]: Likewise.
4811
4812         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Replace wildcard that matches
4813         wstring::_M_replace_dispatch with more specific patterns.
4814         * include/bits/fs_path.h (path::_S_convert_loc<_InputIterator>):
4815         Create const std::string to avoid redundant call to _S_convert_loc
4816         with non-const pointers.
4817         * include/bits/locale_conv.h (__do_str_codecvt): Use if-constexpr to
4818         avoid unnecessary basic_string::assign instantiations.
4819
4820         * include/std/memory (__uses_alloc_args): Add string-literal to
4821         static_assert, to match the one in __uses_alloc.
4822         [__cpp_concepts] (_Std_pair): Use C++2a syntax for concept.
4823         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: Check
4824         for recursive uses-allocator construction of nested pairs.
4825         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc:: Add
4826         comment.
4827
4828 2019-04-26  Jakub Jelinek  <jakub@redhat.com>
4829
4830         * config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt: Update.
4831         * config/abi/post/s390-linux-gnu/baseline_symbols.txt: Update.
4832         * config/abi/post/powerpc-linux-gnu/baseline_symbols.txt: Update.
4833         * config/abi/post/powerpc64-linux-gnu/32/baseline_symbols.txt: Update.
4834
4835         * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
4836         * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
4837         * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
4838         * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
4839         * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
4840         * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
4841         * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
4842
4843 2019-04-25  Jonathan Wakely  <jwakely@redhat.com>
4844
4845         PR libstdc++/90239
4846         * doc/xml/manual/status_cxx2020.xml: Amend P0591R4 status.
4847         * include/std/scoped_allocator [__cplusplus > 201703L]
4848         (scoped_allocator_adaptor::construct): Define in terms of
4849         uses_allocator_construction_args, as per P0591R4.
4850         * testsuite/20_util/scoped_allocator/construct_pair_c++2a.cc: New test.
4851         * testsuite/util/testsuite_allocator.h: Remove name of unused
4852         parameter.
4853
4854 2019-04-24  Jonathan Wakely  <jwakely@redhat.com>
4855
4856         * doc/xml/manual/status_cxx2017.xml: Document P0024R2 status.
4857         * doc/html/*: Regenerate.
4858
4859         * include/bits/fs_path.h (operator<, operator<=, operator>)
4860         (operator>=, operator==, operator!=): Make hidden friends, as per
4861         LWG 3065.
4862         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: Fix
4863         string type in test.
4864         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
4865
4866         * include/std/any (any::any(ValueType&&)): Use __and_v.
4867         * include/std/numeric (midpoint(T, T, T), midpoint(T*, T*, T*)):
4868         Likewise.
4869
4870         * include/std/tuple (apply): Use remove_reference_t instead of decay_t
4871         as per P0777R1.
4872         * include/std/type_traits (__result_of_memfun): Use remove_reference
4873         instead of __remove_cvref_t and remove redundant is_same check.
4874         (__inv_unwrap): Use __remove_cvref_t instead of decay_t.
4875
4876         * include/experimental/string_view (basic_string_view::pointer)
4877         (basic_string_view::reference): Fix to refer to non-const value_type.
4878         * include/bits/basic_string.h (basic_string): Use __sv_check and
4879         __sv_limit instead of basic_string_view::_M_check and
4880         basic_string_view::_M_limit.
4881         * include/std/string_view (__sv_check, __sv_limit): New
4882         helper functions to replace basic_string_view::_M_check and
4883         basic_string_view::_M_limit.
4884         (basic_string_view): Add static assertions to enforce ill-formed
4885         requirement for traits_type::char_type from P1148R0, and to enforce
4886         required properties of char-like types.
4887         (basic_string_view::pointer, basic_string_view::reference): Fix to
4888         refer to non-const value_type.
4889         (basic_string_view::operator[], basic_string_view::at)
4890         (basic_string_view::front, basic_string_view::back)
4891         (basic_string_view::data): Use const_reference and const_pointer
4892         typedefs for return types.
4893         (basic_string_view::_M_check, basic_string_view::_M_limit): Remove.
4894         (hash<wstring_view>): Fix argument_type typedef.
4895         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4896         char/1.cc: Fix expected return type of basic_string_view::data().
4897         * testsuite/21_strings/basic_string_view/modifiers/remove_prefix/
4898         wchar_t/1.cc: Likewise.
4899         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4900         char/1.cc: Likewise.
4901         * testsuite/21_strings/basic_string_view/modifiers/remove_suffix/
4902         wchar_t/1.cc: Likewise.
4903         * testsuite/21_strings/basic_string_view/requirements/traits_neg.cc:
4904         New test.
4905         * testsuite/21_strings/basic_string_view/requirements/typedefs.cc:
4906         Check reference and pointer typedefs.
4907         * testsuite/experimental/string_view/requirements/typedefs.cc:
4908         Likewise.
4909         * testsuite/experimental/string_view/modifiers/remove_prefix/char/1.cc:
4910         Fix expected return type of basic_string_view::data().
4911         * testsuite/experimental/string_view/modifiers/remove_prefix/wchar_t/
4912         1.cc: Likewise.
4913         * testsuite/experimental/string_view/modifiers/remove_suffix/char/1.cc:
4914         Likewise.
4915         * testsuite/experimental/string_view/modifiers/remove_suffix/wchar_t/
4916         1.cc: Likewise.
4917
4918         PR libstdc++/90220
4919         * include/std/any (__any_caster): Use remove_cv_t instead of decay_t.
4920         Avoid a runtime check for types that can never be stored in std::any.
4921         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4922         array types.
4923
4924         PR libstdc++/90220 (partial)
4925         * include/std/any (any_cast<T>(any*), any_cast<T>(const any*)): Do
4926         not attempt ill-formed static_cast to pointers to non-object types.
4927         * testsuite/20_util/any/misc/any_cast.cc: Test std::any_cast with
4928         function types.
4929
4930         * testsuite/20_util/variant/run.cc: Catch exception by reference to
4931         prevent -Wcatch-value warning.
4932
4933         * include/std/variant (__variant_construct): Use template parameter
4934         type instead of equivalent decltype-specifier.
4935         (_Move_ctor_base<false, Types...>::_Move_ctor_base(_Move_ctor_base&&)):
4936         Replace forward with move.
4937         (_Move_ctor_base<false, Types...>::_M_destructive_move)
4938         (_Move_ctor_base<false, Types...>::_M_destructive_copy)
4939         (_Move_ctor_base<true, Types...>::_M_destructive_move)
4940         (_Move_ctor_base<true, Types...>::_M_destructive_copy): Only set the
4941         index after construction succeeds.
4942         (_Copy_assign_base<false, Types...>::operator=): Remove redundant
4943         if-constexpr checks that are always true. Use __remove_cvref_t instead
4944         of remove_reference so that is_nothrow_move_constructible check
4945         doesn't use a const rvalue parameter. In the potentially-throwing case
4946         construct a temporary and move assign it, as per LWG 2904.
4947         (_Move_assign_base<false, Types...>::operator=): Remove redundant
4948         if-constexpr checks that are always true. Use emplace as per LWG 2904.
4949         (variant::operator=(T&&)): Only use emplace conditionally, otherwise
4950         construct a temporary and move assign from it, as per LWG 2904.
4951         * testsuite/20_util/variant/exception_safety.cc: Check that
4952         assignment operators have strong exception safety guarantee.
4953
4954 2019-04-23  Thomas Rodgers <trodgers@redhat.com>
4955
4956         Document PSTL linker flags
4957
4958         * doc/xml/manual/using.xml: Add PSTL linker flags to table 3.1.
4959
4960 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
4961
4962         * include/std/variant (__detail::__variant::_Traits): Make
4963         _S_trivial_copy_assign depend on _S_trivial_copy_ctor and make
4964         _S_trivial_move_assign depend on _S_trivial_move_ctor, as per
4965         P0602R4.
4966         (__detail::__variant::_Copy_assign_alias): Only depend on
4967         _S_trivial_copy_assign, which subsumes _S_trivial_copy_ctor now.
4968         * testsuite/20_util/variant/compile.cc: Correct checks for trivial
4969         move assignment operators.
4970
4971         PR libstdc++/90165
4972         * include/std/variant (variant::__not_self): New helper for the
4973         is_same_v<remove_cvref_t<T>, variant>==false constraints.
4974         (variant::__to_type_impl): Remove.
4975         (variant::__to_type): Add default argument to check pack size, instead
4976         of using __to_type_impl.
4977         (variant::__accepted_type): Add default argument using __not_self.
4978         (variant::__is_in_place_tag, variant::__not_in_place_tag): New helpers
4979         for variant(T&&) constructor constraint.
4980         (variant::variant(T&&)): Use __not_in_place_tag in constraints.
4981         Extract __accepted_type into a named template parameter for reuse in
4982         other constraints and in the exception specification.
4983         (variant::variant(in_place_type_t<T>, Args&&...))
4984         (variant::variant(in_place_type_t<T>, initializer_list<U>, Args&&...))
4985         (variant::variant(in_place_index_t<T>, Args&&...))
4986         (variant::variant(in_place_index_t<T>, initializer_list<U>, Args&&...))
4987         (variant::operator=T&&)): Remove redundant && from trait arguments.
4988         * testsuite/20_util/variant/compile.cc: Check variant(T&&) constructor
4989         isn't used for in_place_type or in_place_index arguments.
4990
4991         * include/std/type_traits (unwrap_reference_t): Define for C++2a.
4992         (unwrap_ref_decay): Remove inheritance from unwrap_reference.
4993         * testsuite/20_util/unwrap_reference/1.cc: Adjust test to use alias.
4994
4995 2019-04-23  Ramana Radhakrishnan  <ramana.radhakrishnan@arm.com>
4996             Bernd Edlinger  <bernd.edlinger@hotmail.de>
4997             Jakub Jelinek  <jakub@redhat.com>
4998
4999         PR target/89093
5000         * libsupc++/eh_personality.cc (PERSONALITY_FUNCTION): Add
5001         general-regs-only target attribute for ARM.
5002
5003 2019-04-23  Jonathan Wakely  <jwakely@redhat.com>
5004
5005         PR libstdc++/87431
5006         * include/bits/basic_string.h (_Never_valueless_alt): Make partial
5007         specialization also depend on is_nothrow_move_constructible.
5008         * include/std/variant (__detail::__variant::__never_valueless()):
5009         Only true if the variant would have a move assignment operator.
5010         (__detail::__variant::_Variant_storage<false, T...>::_M_valid()):
5011         Check __never_valueless<T...>().
5012         (variant::emplace): Only perform non-throwing move assignments
5013         for never-valueless alternatives if the variant has a move assignment
5014         operator.
5015         * testsuite/20_util/variant/compile.cc: Check that never-valueless
5016         types can be emplaced into non-assignable variants.
5017         * testsuite/20_util/variant/run.cc: Check that never-valueless types
5018         don't get copied when emplaced into non-assignable variants.
5019
5020         * include/std/variant (__detail::__variant::__ref_cast): Remove
5021         unused function.
5022         (__detail::__variant::_Uninitialized::_M_get)
5023         (__detail::__variant::__get)
5024         (__gen_vtable_impl::__element_by_index_or_cookie): Add noexcept.
5025
5026 2019-04-21  Iain Sandoe  <iain@sandoe.co.uk>
5027
5028         * testsuite/17_intro/headers/c++1998/charset.cc: Skip for Darwin8
5029         to Darwin10.
5030         * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
5031         * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
5032         * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
5033         * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
5034
5035 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
5036
5037         Delegate PSTL configuration to pstl/pstl_config.h
5038
5039         * include/bits/c++config: Remove explicit PSTL configuration
5040         macros and use definitions from <pstl/pstl_config.h>.
5041
5042 2019-04-20  Thomas Rodgers <trodgers@redhat.com>
5043
5044         Cleanup algorithm implementations
5045         * include/pstl/glue_algorithm_impl.h (stable_sort): Forward
5046         execution policy.
5047         (mismatch): Forward execution policy.
5048         (equal): Qualify call to std::equal().
5049         (partial_sort): Forward execution policy.
5050         (inplace_merge): Forward execution policy.
5051
5052 2019-04-19  Thomas Rodgers <trodgers@redhat.com>
5053
5054         Improve implementation of parallel equal()
5055         * include/pstl/algorithm_impl.h
5056         (__internal::__brick_equal): use "4 iterator" version of
5057         std::equal().
5058         (__internal::__brick_equal): use simd for random access
5059         iterators on unsequenced execution policies.
5060         (__internal::__pattern_equal): add "4 iterator" version
5061         (__internal::__pattern_equal): dispatch to simd __brick_equal
5062         for vector-only execution policies.
5063         (__internal::__pattern_equal): dispatch to __parallel_or for
5064         parallel execution policies.
5065         * include/pstl/glue_algorithm_impl.h
5066         (std::equal): dispatch to "4 iterator" version of
5067         __internal::__pattern_equal().
5068
5069 2019-04-17  Jonathan Wakely  <jwakely@redhat.com>
5070
5071         PR libstdc++/90105
5072         * include/bits/forward_list.h (operator==): Do not use operator!= to
5073         compare elements.
5074         (forward_list<T, A>::sort(Comp)): When elements are equal take the one
5075         earlier in the list, so that sort is stable.
5076         * testsuite/23_containers/forward_list/operations/90105.cc: New test.
5077         * testsuite/23_containers/forward_list/comparable.cc: Test with
5078         types that meet the minimum EqualityComparable and LessThanComparable
5079         requirements. Remove irrelevant comment.
5080
5081         * include/std/variant (__detail::__variant::_Traits::_S_copy_assign):
5082         Do not depend on whether all alternative types are move constructible.
5083         (__detail::__variant::_Copy_assign_base::operator=): Remove cv-quals
5084         from the operand when deciding whether to perform the assignment.
5085         * testsuite/20_util/variant/compile.cc (DeletedMoves): Define type
5086         with deleted move constructor and deleted move assignment operator.
5087         (default_ctor, copy_ctor, move_ctor, copy_assign, move_assign): Check
5088         behaviour of variants with DeletedMoves as an alternative.
5089         * testsuite/20_util/variant/run.cc (DeletedMoves): Define same type.
5090         (move_ctor, move_assign): Check that moving a variant with a
5091         DeletedMoves alternative falls back to copying instead of moving.
5092
5093         * testsuite/20_util/variant/compile.cc: Remove empty string literals
5094         from static_assert declarations.
5095
5096         * testsuite/20_util/variant/compile.cc (MoveCtorOnly): Fix type to
5097         actually match its name.
5098         (MoveCtorAndSwapOnly): Define new type that adds swap to MoveCtorOnly.
5099         (test_swap()): Fix result for MoveCtorOnly and check
5100         MoveCtorAndSwapOnly.
5101
5102         * include/std/optional (optional::value_or(U&&) &&): Add missing
5103         constexpr specifier.
5104         * testsuite/20_util/optional/constexpr/observers/4.cc: Check value_or
5105         for disengaged optionals and rvalue optionals.
5106         * testsuite/20_util/optional/observers/4.cc: Likewise.
5107
5108 2019-04-12  Thomas Rodgers  <trodgers@redhat.com>
5109
5110         * include/pstl/algorithm_impl.h: Uglify identfiers.
5111         * include/pstl/numeric_impl.h:  Uglify identfiers.
5112         * include/pstl/parallel_backend_tbb.h: Uglify identfiers.
5113
5114 2019-04-11  Thomas Rodgers  <trodgers@redhat.com>
5115
5116         * include/bits/c++config:
5117         Add definition for __PSTL_ASSERT.
5118         Add definition for __PSTL_ASSERT_MSG.
5119         * include/pstl/algorithm_impl.h: Replace use of assert().
5120         * include/pstl/numeric_impl.h: Replace use of assert().
5121         * include/pstl/parallel_backend_tbb.h:
5122         Replace use of assert().
5123         Replace use of __TBB_ASSERT().
5124         * include/pstl/parallel_backend_utils.h: Replace use of assert().
5125
5126 2019-04-11  Jonathan Wakely  <jwakely@redhat.com>
5127
5128         PR libstdc++/90046
5129         * src/c++17/memory_resource.cc
5130         (monotonic_buffer_resource::_Chunk::allocate): Increase alignment if
5131         needed to allow placing a _Chunk at the end of the buffer.
5132         (monotonic_buffer_resource::_M_new_buffer): Remove static_assert.
5133
5134 2019-04-10  Jonathan Wakely  <jwakely@redhat.com>
5135
5136         * doc/xml/faq.xml: Add information about emergency EH pool.
5137         * doc/xml/manual/debug.xml: Update list of memory debugging tools.
5138         Move outdated information on mt_allocator to a separate section.
5139         * doc/xml/manual/evolution.xml: Clarify that GLIBCXX_FORCE_NEW
5140         doesn't affect the default allocator.
5141
5142         * testsuite/lib/libstdc++.exp (check_v3_target_parallel_mode): Fix
5143         typo.
5144
5145         PR libstdc++/89851
5146         * testsuite/20_util/variant/89851.cc: New test.
5147
5148 2019-04-09  Jonathan Wakely  <jwakely@redhat.com>
5149
5150         * include/std/variant: Adjust whitespace. Add comments.
5151         (_Multi_array): Leave primary template undefined.
5152         (_Multi_array<_Tp>): Define partial specialization for base case of
5153         recursion.
5154         (__gen_vtable_impl, __gen_vtable): Remove redundant && from type
5155         which is always a reference.
5156         (__gen_vtable::_S_apply()): Remove function, inline body into
5157         default member initializer.
5158         * testsuite/20_util/variant/visit.cc: Test with noncopyable types.
5159
5160         * include/std/variant (__variant_idx_cookie): Add member type.
5161         (__visitor_result_type): Remove.
5162         (__do_visit): Use invoke_result instead of __visitor_result_type.
5163         * testsuite/20_util/variant/visit.cc: New test.
5164
5165         PR libstdc++/90008
5166         * include/std/variant (_VARIANT_RELATION_FUNCTION_TEMPLATE): Remove
5167         unused capture.
5168         * testsuite/20_util/variant/90008.cc: New test.
5169
5170 2019-04-09  Thomas Rodgers  <trodgers@redhat.com>
5171
5172         * include/pstl/algorithm_impl.h: Add namespace qualification.
5173         * include/pstl/execution_defs.h: Add namespace qualification.
5174         * include/pstl/execution_impl.h: Add namespace qualification.
5175         * include/pstl/numeric_impl.h: Add namespace qualification.
5176         * include/pstl/parallel_backend_tbb.h: Add namespace qualification.
5177         * include/pstl/unseq_backend_simd.h: Add namespace qualification.
5178         * include/pstl/parallel_backend_utils.h: Include <cassert>.
5179
5180 2019-04-08  Ville Voutilainen  <ville.voutilainen@gmail.com>
5181
5182         Fix visit<R> for variant.
5183         * include/std/variant (__do_visit): Add a template parameter
5184         for enforcing same return types for visit.
5185         (__gen_vtable_impl): Likewise.
5186         (_S_apply_single_alt): Adjust.
5187         (__visit_invoke_impl): New. Handle casting to void.
5188         (__do_visit_invoke): New. Enforces same return types.
5189         (__do_visit_invoke_r): New. Converts return types.
5190         (__visit_invoke): Adjust.
5191         (__gen_vtable):  Add a template parameter for enforcing
5192         same return types for visit.
5193         * testsuite/20_util/variant/visit_r.cc: Add a test for a visitor with
5194         different return types.
5195         * testsuite/20_util/variant/visit_neg.cc: New. Ensures that
5196         visitors with different return types don't accidentally
5197         compile with regular visitation.
5198
5199 2019-04-08  Christophe Lyon  <christophe.lyon@linaro.org>
5200
5201         * testsuite/27_io/filesystem/iterators/caching.cc: Add
5202         dg-require-filesystem-ts.
5203
5204 2019-04-05  Jonathan Wakely  <jwakely@redhat.com>
5205
5206         * doc/xml/manual/status_cxx2020.xml: Update status.
5207         * include/std/variant (visit<R>): Define for C++2a (P0655R1).
5208         * testsuite/20_util/variant/visit_r.cc: New test.
5209
5210         * include/bits/fs_dir.h (directory_iterator::operator*)
5211         (directory_iterator::operator->): Add noexcept.
5212         (operator==, operator!=): Replace namespace-scope equality operators
5213         for directory iterators with hidden friends.
5214
5215         PR libstdc++/89986
5216         * config/abi/pre/gnu.ver: Add missing exports.
5217         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Test
5218         increment member.
5219
5220         * config/abi/pre/gnu.ver: Export new symbols.
5221         * include/bits/fs_dir.h (recursive_directory_iterator::options())
5222         (recursive_directory_iterator::recursion_pending())
5223         (recursive_directory_iterator::disable_recursion_pending()): Remove
5224         inline definitions. Make noexcept.
5225         (recursive_directory_iterator::depth())
5226         (recursive_directory_iterator::operator*())
5227         (recursive_directory_iterator::operator->()): Make noexcept.
5228         (recursive_directory_iterator::_M_options)
5229         (recursive_directory_iterator::_M_pending): Remove data members.
5230         * src/c++17/fs_path.cc (_Dir_stack): Add constructor and data members.
5231         (recursive_directory_iterator::recursive_directory_iterator): Remove
5232         ctor-initializer. Use new constructor for _Dir_stack.
5233         (recursive_directory_iterator::options())
5234         (recursive_directory_iterator::recursion_pending())
5235         (recursive_directory_iterator::disable_recursion_pending()): Add
5236         non-inline definitions.
5237         (recursive_directory_iterator::depth()): Make noexcept.
5238         (recursive_directory_iterator::increment(error_code&))
5239         (recursive_directory_iterator::pop(error_code&)): Adjust to new
5240         location of options and recursion_pending members.
5241         * testsuite/27_io/filesystem/iterators/recursion_pending.cc: New test.
5242         * testsuite/util/testsuite_fs.h (__gnu_test::scoped_file): Add
5243         user-declared move constructor and assignment operator, to make the
5244         type move-only.
5245
5246         * src/c++17/fs_dir.cc (_Dir::advance(bool, error_code&)): Handle
5247         d_type == DT_UNKNOWN immediately.
5248         (_Dir::should_recurse(bool, error_code&)): Remove file_type::unknown
5249         handling here.
5250         * testsuite/27_io/filesystem/iterators/caching.cc: New test.
5251
5252         * include/bits/fs_path.h (path::operator=(path&&)): Check for self
5253         assignment.
5254         * src/c++17/fs_path.cc (path::operator=(const path&)): Likewise.
5255         * testsuite/27_io/filesystem/path/assign/copy.cc: Test self
5256         assignment.
5257
5258         PR libstdc++/87431 (again)
5259         * include/bits/basic_string.h (__variant::_Never_valueless_alt):
5260         Define partial specialization for basic_string.
5261         * include/bits/shared_ptr.h (_Never_valueless_alt): Likewise for
5262         shared_ptr and weak_ptr.
5263         * include/bits/std_function.h (_Never_valueless_alt): Likewise for
5264         function.
5265         * include/bits/stl_vector.h (_Never_valueless_alt): Likewise for
5266         vector.
5267         * include/bits/unique_ptr.h (_Never_valueless_alt): Likewise for
5268         unique_ptr.
5269         * include/debug/vector (_Never_valueless_alt): Likewise for debug
5270         vector.
5271         * include/std/any (_Never_valueless_alt): Define explicit
5272         specialization for any.
5273         * include/std/variant (_Never_valueless_alt): Define primary template.
5274         (__never_valueless): Use _Never_valueless_alt instead of
5275         is_trivially_copyable.
5276         (variant::emplace<N>(Args&&...)): Add special case for non-throwing
5277         initializations to avoid try-catch overhead. Add special case for
5278         scalars produced by potentially-throwing conversions. Use
5279         _Never_valueless_alt instead of is_trivially_copyable for the
5280         remaining strong exception-safety cases.
5281         (variant::emplace<N>(initializer_list<U>, Args&&...)): Likewise.
5282         * testsuite/20_util/variant/87431.cc: Run both test functions.
5283         * testsuite/20_util/variant/exception_safety.cc: New test.
5284         * testsuite/20_util/variant/run.cc: Use pmr::string instead of string,
5285         so the variant becomes valueless.
5286
5287 2019-04-03  Jonathan Wakely  <jwakely@redhat.com>
5288
5289         PR libstdc++/85184
5290         * include/std/variant (_Copy_assign_base, _Move_assign_base, variant):
5291         Remove assertions.
5292         (variant::emplace<_Tp>): Return result of emplace<N> directly.
5293
5294         * include/std/string (__hash_string_base): New class template defining
5295         operator() for hashing strings.
5296         (hash<pmr::string>, hash<pmr::u8string>, hash<pmr::u16string>)
5297         (hash<pmr::u32string>, hash<pmr::wstring>): Define for C++17.
5298         * testsuite/21_strings/basic_string/hash/hash.cc: New test.
5299         * testsuite/21_strings/basic_string/hash/hash_char8_t.cc: New test.
5300
5301 2019-04-01  Ville Voutilainen  <ville.voutilainen@gmail.com>
5302
5303         Use single-visitation in variant assignment and swap and relops.
5304         Also use indices instead of types when checking whether
5305         variants hold the same thing.
5306         * include/std/variant (__do_visit): Add a template parameter
5307         for index visitation, invoke with indices if index visitation
5308         is used.
5309         (__variant_idx_cookie): New.
5310         (__visit_with_index): Likewise.
5311         (_Copy_assign_base::operator=): Do single-visitation with
5312         an index visitor.
5313         (_Move_assign_base::operator=): Likewise.
5314         (_Extra_visit_slot_needed): Adjust.
5315         (__visit_invoke): Call with indices if it's an index visitor.
5316         (relops): Do single-visitation with an index visitor.
5317         (swap): Likewise.
5318         (__visitor_result_type): New.
5319
5320 2019-03-30  Eric Botcazou  <ebotcazou@adacore.com>
5321
5322         * src/c++17/fs_ops.cc (fs::permissions): Use std::errc::not_supported.
5323
5324 2019-03-28  Ville Voutilainen  <ville.voutilainen@gmail.com>
5325
5326         Don't revisit a variant we are already visiting.
5327         * include/std/variant (__variant_construct_single): New.
5328         (__variant_construct): Use it.
5329         (_M_destructive_move): Likewise.
5330         (_M_destructive_copy): Likewise.
5331         (_Copy_assign_base::operator=): Adjust.
5332         (_Move_assign_base::operator=): Likewise.
5333         (swap): Likewise.
5334
5335 2019-03-26  Jonathan Wakely  <jwakely@redhat.com>
5336
5337         PR libstdc++/85965
5338         * include/bits/hashtable.h (_Hashtable): Move static assertions to
5339         destructor so they are not evaluated until the _Key type is complete.
5340         * include/bits/stl_tree.h (_Rb_tree): Likewise.
5341         * testsuite/23_containers/set/85965.cc: New test.
5342         * testsuite/23_containers/unordered_set/85965.cc: New test.
5343         * testsuite/23_containers/map/48101_neg.cc: Replace "here" errors
5344         with regexp matching the corresponding _Rb_tree specialization.
5345         * testsuite/23_containers/multimap/48101_neg.cc: Likewise.
5346         * testsuite/23_containers/multiset/48101_neg.cc: Remove "here" error.
5347         * testsuite/23_containers/set/48101_neg.cc: Likewise.
5348         * testsuite/23_containers/unordered_map/48101_neg.cc: Likewise.
5349         * testsuite/23_containers/unordered_multimap/48101_neg.cc: Likewise.
5350         * testsuite/23_containers/unordered_multiset/48101_neg.cc: Likewise.
5351         * testsuite/23_containers/unordered_set/48101_neg.cc: Likewise.
5352
5353 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
5354
5355         PR libstdc++/89825
5356         Fix based on a suggestion by Antony Polukhin.
5357         * include/std/variant (__never_valueless): New.
5358         (_M_valid): Use it.
5359         (_Extra_visit_slot_needed): New.
5360         (_Multi_array): Use it.
5361         (_S_apply_all_alts): Likewise.
5362
5363 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
5364
5365         PR libstdc++/89824
5366         Fix based on a suggestion by Antony Polukhin.
5367         * include/std/variant (__gen_vtable): Don't reserve an
5368         additional table slot, _Multi_array already does that.
5369
5370 2019-03-26  Ville Voutilainen  <ville.voutilainen@gmail.com>
5371
5372         PR libstdc++/89816
5373         Fix based on a suggestion by Antony Polukhin.
5374         * include/std/variant (__variant_construct): Capture a pointer
5375         to the storage and visit just one variant.
5376
5377 2019-03-22  Jonathan Wakely  <jwakely@redhat.com>
5378
5379         * doc/xml/manual/backwards_compatibility.xml: Remove link to
5380         Doxygen-generated pages with unstable URL.
5381         * doc/xml/manual/concurrency_extensions.xml: Likewise.
5382         * doc/xml/manual/extensions.xml: Likewise.
5383         * doc/xml/manual/parallel_mode.xml: Likewise.
5384         * doc/xml/manual/support.xml: Likewise.
5385
5386         * include/bits/stl_algobase.h (__lg): Do arithmetic on type int to
5387         avoid -Wconversion warnings.
5388
5389 2019-03-21  Thomas Rodgers  <trodgers@redhat.com>
5390
5391         * include/Makefile.am (std_header): Add ${std_srcdir}/execution.
5392         (pstl_srcdir, pstl_builddir, pstl_headers): New variables.
5393         (allstamped): Add stamp-pstl.
5394         (install-headers): Add ptsl_builddir.
5395         * include/Makefile.in: Regenerate.
5396         * include/bits/c++config: Add pstl configuration.
5397         * include/pstl/LICENSE.txt: New file.
5398         * include/pstl/algorithm_fwd.h: New file.
5399         * include/pstl/algorithm_impl.h: New file.
5400         * include/pstl/execution_defs.h: New file.
5401         * include/pstl/execution_impl.h: New file.
5402         * include/pstl/glue_algorithm_defs.h: New file.
5403         * include/pstl/glue_algorithm_impl.h: New file.
5404         * include/pstl/glue_execution_defs.h: New file.
5405         * include/pstl/glue_memory_defs.h: New file.
5406         * include/pstl/glue_memory_impl.h: New file.
5407         * include/pstl/glue_numeric_defs.h: New file.
5408         * include/pstl/glue_numeric_impl.h: New file.
5409         * include/pstl/memory_impl.h: New file.
5410         * include/pstl/numeric_fwd.h: New file.
5411         * include/pstl/numeric_impl.h: New file.
5412         * include/pstl/parallel_backend.h: New file.
5413         * include/pstl/parallel_backend_tbb.h: New file.
5414         * include/pstl/parallel_backend_utils.h: New file.
5415         * include/pstl/parallel_impl.h: New file.
5416         * include/pstl/pstl_config.h: New file.
5417         * include/pstl/unseq_backend_simd.h: New file.
5418         * include/pstl/utils.h: New file.
5419         * include/std/algorithm: Include parallel algorithm implementations.
5420         * include/std/execution: New file.
5421         * include/std/memory: Include parallel algorithm implementations.
5422         * include/std/numeric: Include parallel algorithm implementations.
5423         * include/std/version: Add parallel algorithms feature test macro.
5424         * testsuite/util/pstl/pstl_test_config.h: New file.
5425         * testsuite/util/pstl/test_utils.h: New file.
5426         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
5427         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
5428         * testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
5429         * testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
5430         * testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
5431         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
5432         * testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
5433         * testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
5434         * testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
5435         * testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
5436         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
5437         * testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
5438         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
5439         * testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
5440         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
5441         * testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
5442         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
5443         * testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
5444         * testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
5445         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
5446         * testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
5447         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
5448         * testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
5449         * testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
5450         * testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
5451         * testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
5452         * testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
5453         * testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
5454         * testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
5455         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
5456         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
5457         * testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
5458         * testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
5459         * testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
5460         * testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
5461         * testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
5462         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
5463         * testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
5464         * testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
5465         * testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
5466         * testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
5467         * testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
5468         * testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
5469         * testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
5470         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
5471         * testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
5472         * testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
5473         * testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
5474         * testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
5475         * testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
5476         * testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
5477         * testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
5478         * testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
5479         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_construct.cc: New file.
5480         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_copy_move.cc: New file.
5481         * testsuite/testsuite/20_util/specialized_algorithms/pstl/uninitialized_fill_destroy.cc: New file.
5482         * testsuite/testsuite/25_algorithms/pstl/alg_merge/inplace_merge.cc: New file.
5483         * testsuite/testsuite/25_algorithms/pstl/alg_merge/merge.cc: New file.
5484         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_if.cc: New file.
5485         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/copy_move.cc: New file.
5486         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/fill.cc: New file.
5487         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/generate.cc: New file.
5488         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/is_partitioned.cc: New file.
5489         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition.cc: New file.
5490         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/partition_copy.cc: New file.
5491         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove.cc: New file.
5492         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/remove_copy.cc: New file.
5493         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace.cc: New file.
5494         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/replace_copy.cc: New file.
5495         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate.cc: New file.
5496         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/rotate_copy.cc: New file.
5497         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/swap_ranges.cc: New file.
5498         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_binary.cc: New file.
5499         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/transform_unary.cc: New file.
5500         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique.cc: New file.
5501         * testsuite/testsuite/25_algorithms/pstl/alg_modifying_operations/unique_copy_equal.cc: New file.
5502         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/adjacent_find.cc: New file.
5503         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/all_of.cc: New file.
5504         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/any_of.cc: New file.
5505         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/count.cc: New file.
5506         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/equal.cc: New file.
5507         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find.cc: New file.
5508         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_end.cc: New file.
5509         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_first_of.cc: New file.
5510         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/find_if.cc: New file.
5511         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/for_each.cc: New file.
5512         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/mismatch.cc: New file.
5513         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/none_of.cc: New file.
5514         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/nth_element.cc: New file.
5515         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse.cc: New file.
5516         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/reverse_copy.cc: New file.
5517         * testsuite/testsuite/25_algorithms/pstl/alg_nonmodifying/search_n.cc: New file.
5518         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/includes.cc: New file.
5519         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_heap.cc: New file.
5520         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/is_sorted.cc: New file.
5521         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/lexicographical_compare.cc: New file.
5522         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/minmax_element.cc: New file.
5523         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort.cc: New file.
5524         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/partial_sort_copy.cc: New file.
5525         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/set.cc: New file.
5526         * testsuite/testsuite/25_algorithms/pstl/alg_sorting/sort.cc: New file.
5527         * testsuite/testsuite/26_numerics/pstl/numeric_ops/adjacent_difference.cc: New file.
5528         * testsuite/testsuite/26_numerics/pstl/numeric_ops/reduce.cc: New file.
5529         * testsuite/testsuite/26_numerics/pstl/numeric_ops/scan.cc: New file.
5530         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_reduce.cc: New file.
5531         * testsuite/testsuite/26_numerics/pstl/numeric_ops/transform_scan.cc: New file.
5532
5533 2019-03-21  Jonathan Wakely  <jwakely@redhat.com>
5534
5535         * include/c_compatibility/math.h [!__STDCPP_WANT_MATH_SPEC_FUNCS__]
5536         (assoc_laguerre, assoc_laguerref, assoc_laguerrel, assoc_legendre)
5537         (assoc_legendref, assoc_legendrel, beta, betaf, betal, comp_ellint_1)
5538         (comp_ellint_1f, comp_ellint_1l, comp_ellint_2, comp_ellint_2f)
5539         (comp_ellint_2l, comp_ellint_3, comp_ellint_3f, comp_ellint_3l)
5540         (cyl_bessel_i, cyl_bessel_if, cyl_bessel_il, cyl_bessel_j)
5541         (cyl_bessel_jf, cyl_bessel_jl, cyl_bessel_k, cyl_bessel_kf)
5542         (cyl_bessel_kl, cyl_neumann, cyl_neumannf, cyl_neumannl, ellint_1)
5543         (ellint_1f, ellint_1l, ellint_2, ellint_2f, ellint_2l, ellint_3)
5544         (ellint_3f, ellint_3l, expint, expintf, expintl, hermite, hermitef)
5545         (hermitel, laguerre, laguerref, laguerrel, legendre, legendref)
5546         (legendrel, riemann_zeta, riemann_zetaf, riemann_zetal, sph_bessel)
5547         (sph_besself, sph_bessell, sph_legendre, sph_legendref, sph_legendrel)
5548         (sph_neumann, sph_neumannf, sph_neumannl): Only add using-declarations
5549         when the special functions IS is enabled, not for C++17.
5550         * testsuite/26_numerics/headers/cmath/functions_global_c++17.cc:
5551         Replace with ...
5552         * testsuite/26_numerics/headers/cmath/functions_global.cc: New test,
5553         without checks for special functions in C++17.
5554         * testsuite/26_numerics/headers/cmath/special_functions_global.cc:
5555         New test.
5556
5557         PR libstdc++/88066
5558         * include/backward/hash_map: Use <> for includes not "".
5559         * include/backward/hash_set: Likewise.
5560         * include/backward/strstream: Likewise.
5561         * include/tr1/bessel_function.tcc: Likewise.
5562         * include/tr1/exp_integral.tcc: Likewise.
5563         * include/tr1/legendre_function.tcc: Likewise.
5564         * include/tr1/modified_bessel_func.tcc: Likewise.
5565         * include/tr1/riemann_zeta.tcc: Likewise.
5566
5567 2019-03-19  Jonathan Wakely  <jwakely@redhat.com>
5568
5569         * doc/xml/manual/allocator.xml: Link to table documenting evolution
5570         of extension allocators.
5571         * doc/xml/manual/evolution.xml: Use angle brackets for header names.
5572         Document new headers in 7.2, 8.1 and 9.1 releases.
5573         * doc/xml/manual/using.xml: Adjust link target for new_allocator.
5574         * doc/html/*: Regenerate.
5575
5576 2019-03-12  John David Anglin  <dave.anglin@bell.net>
5577
5578         PR libstdc++/89461
5579         * testsuite/lib/libstdc++.exp: Locate libatomic.
5580         * testsuite/lib/dg-options.exp (add_options_for_libatomic): New.
5581         * testsuite/20_util/shared_ptr/thread/default_weaktoshared.cc: Add
5582         libatomic options.
5583         * testsuite/20_util/shared_ptr/thread/mutex_weaktoshared.cc: Likewise.
5584         * testsuite/experimental/net/timer/waitable/cons.cc: Likewise.
5585         * testsuite/experimental/net/timer/waitable/dest.cc: Likewise.
5586         * testsuite/experimental/net/timer/waitable/ops.cc: Likewise.
5587
5588 2019-03-11  Jonathan Wakely  <jwakely@redhat.com>
5589
5590         PR libstdc++/89460
5591         * configure.ac: Check for sockatmark.
5592         * crossconfig.m4: Check for sockatmark.
5593         * config.h.in: Regenerate.
5594         * configure: Regenerate.
5595         * include/experimental/internet (address_v4::_S_hton): Rename
5596         overloaded functions to _S_hton_16 and _S_ntoh_16.
5597         (address_v4::_S_ntoh): Rename to _S_ntoh_16 and _S_ntoh_32.
5598         (basic_endpoint): Adjust calls to _S_hton and _S_ntoh.
5599         * include/experimental/socket (basic_socket::at_mark): Check
5600         _GLIBCXX_HAVE_SOCKATMARK.
5601
5602         * testsuite/29_atomics/atomic_flag/test_and_set/explicit-hle.cc: Use
5603         const variables instead of macros.
5604
5605         PR libstdc++/89629
5606         * libsupc++/hash_bytes.cc [__SIZEOF_SIZE_T__ == 8] (_Hash_bytes):
5607         Use correct type for len_aligned.
5608         * testsuite/20_util/hash/89629.cc: New test.
5609
5610 2019-03-11  Jakub Jelinek  <jakub@redhat.com>
5611
5612         PR libstdc++/89641
5613         * include/std/atomic (atomic<T>::store, atomic<T>::load,
5614         atomic<T>::exchange, atomic<T>::compare_exchange_weak,
5615         atomic<T>::compare_exchange_strong): Cast __m or __s and __f to int.
5616         * include/bits/atomic_base.h (__atomic_base<T>::operator++,
5617         __atomic_base<T>::operator--, __atomic_base<T>::operator+=,
5618         __atomic_base<T>::operator-=, __atomic_base<T>::operator&=,
5619         __atomic_base<T>::operator|=, __atomic_base<T>::operator^=,
5620         __atomic_base<T*>::operator++, __atomic_base<T*>::operator--,
5621         __atomic_base<T*>::operator+=, __atomic_base<T*>::operator-=): Cast
5622         memory_order_seq_cst to int.
5623
5624 2019-03-08  Jonathan Wakely  <jwakely@redhat.com>
5625
5626         * doc/xml/manual/using.xml: Use link element instead of xref.
5627         * doc/html/*: Regenerate.
5628
5629         * include/bits/fs_path.h (path::format): Add fixed underlying type.
5630
5631 2019-03-08  François Dumont  <fdumont@gcc.gnu.org>
5632
5633         PR libstdc++/89477
5634         * include/debug/map.h (map): Use _RequireNotAllocator to constrain
5635         parameters in deduction guides.
5636         * include/debug/multimap.h (multimap): Likewise.
5637         * include/debug/set.h (multimap): Likewise.
5638         * include/debug/multiset.h (multimap): Likewise.
5639         * include/debug/unordered_map (unordered_map): Likewise.
5640         (unordered_multimap): Likewise.
5641         * include/debug/unordered_set (unordered_set): Likewise.
5642         (unordered_multiset): Likewise.
5643
5644         PR libstdc++/89608
5645         * include/debug/unordered_map (unordered_map<>::_M_check_rehashed):
5646         Invalidate all iterators in case of rehash.
5647         (unordered_multimap<>::_M_check_rehashed): Likewise.
5648         * include/debug/unordered_set
5649         (unordered_set<>::_M_check_rehashed): Likewise.
5650         (unordered_multiset<>::_M_check_rehashed): Likewise.
5651         * testsuite/23_containers/unordered_set/debug/89608_neg.cc: New.
5652
5653 2019-03-07  Andreas Schwab  <schwab@suse.de>
5654
5655         * config/abi/post/riscv64-linux-gnu: New directory.
5656         * config/abi/post/riscv64-linux-gnu/baseline_symbols.txt: New file.
5657
5658 2019-03-07  Jonathan Wakely  <jwakely@redhat.com>
5659
5660         * testsuite/20_util/function_objects/bind_front/1.cc: Change from
5661         compile test to run. Fix typo.
5662
5663         * doc/xml/manual/status_cxx2020.xml: Update C++20 status.
5664         * doc/html/*: Regenerate.
5665
5666         P0356R5 Simplified partial function application
5667         * include/std/functional [C++20] (_Bind_front, _Bind_front_t): Define
5668         helpers for bind_front.
5669         (bind_front, __cpp_lib_bind_front): Define.
5670         * testsuite/20_util/function_objects/bind_front/1.cc: New test.
5671
5672 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
5673
5674         * include/std/type_traits (__cpp_lib_bounded_array_traits): Define.
5675         * include/std/version (__cpp_lib_bounded_array_traits): Likewise.
5676         * testsuite/20_util/is_bounded_array/value.cc: Check for macro.
5677         * testsuite/20_util/is_unbounded_array/value.cc: Likewise.
5678
5679 2019-03-06  Edward Smith-Rowland  <3dw4rd@verizon.net>
5680
5681         PR libstdc++/86655 - std::assoc_legendre should not constrain
5682         the value of m (or x).
5683         * include/tr1/legendre_function.tcc (__assoc_legendre_p,
5684         __sph_legendre): If degree > order Don't throw, return 0.
5685         (__legendre_p, __assoc_legendre_p): Don't constrain x either.
5686         * testsuite/special_functions/02_assoc_legendre/pr86655.cc: New test.
5687         * testsuite/special_functions/20_sph_legendre/pr86655.cc: New test.
5688         * testsuite/tr1/5_numerical_facilities/special_functions/
5689         02_assoc_legendre/pr86655.cc: New test.
5690         * testsuite/tr1/5_numerical_facilities/special_functions/
5691         22_sph_legendre/pr86655.cc: New test.
5692
5693 2019-03-06  Ville Voutilainen  <ville.voutilainen@gmail.com>
5694
5695         Rewrite variant.
5696         Also PR libstdc++/85517
5697         * include/std/variant (__do_visit): New.
5698         (__variant_cast): Likewise.
5699         (__variant_cookie): Likewise.
5700         (__erased_*): Remove.
5701         (_Variant_storage::_S_vtable): Likewise.
5702         (_Variant_storage::__M_reset_impl): Adjust to use __do_visit.
5703         (_Variant_storage::__M_reset): Adjust.
5704         (__variant_construct): New.
5705         (_Copy_ctor_base(const _Copy_ctor_base&)): Adjust to use
5706         __variant_construct.
5707         (_Move_ctor_base(_Move_ctor_base&&)): Likewise.
5708         (_Move_ctor_base::__M_destructive_copy): New.
5709         (_Move_ctor_base::__M_destructive_move): Adjust to use
5710         __variant_construct.
5711         (_Copy_assign_base::operator=): Adjust to use __do_visit.
5712         (_Copy_assign_alias): Adjust to check both copy assignment
5713         and copy construction for triviality.
5714         (_Move_assign_base::operator=): Adjust to use __do_visit.
5715         (_Multi_array): Add support for visitors that accept and return
5716         a __variant_cookie.
5717         (__gen_vtable_impl::_S_apply_all_alts): Likewise.
5718         (__gen_vtable_impl::_S_apply_single_alt): Likewise.
5719         (__gen_vtable_impl::__element_by_index_or_cookie): New. Generate
5720         a __variant_cookie temporary for a variant that is valueless and..
5721         (__gen_vtable_impl::__visit_invoke): ..adjust here.
5722         (__gen_vtable::_Array_type): Conditionally make space for
5723         the __variant_cookie visitor case.
5724         (__variant_construct_by_index): New.
5725         (get_if): Adjust to use std::addressof.
5726         (relops): Adjust to use __do_visit.
5727         (variant): Add __variant_cast and __variant_construct_by_index
5728         as friends.
5729         (variant::emplace): Use _M_reset() and __variant_construct_by_index
5730         instead of self-destruction.
5731         (variant::swap): Adjust to use __do_visit.
5732         (visit): Reimplement in terms of __do_visit.
5733         (__variant_hash_call_base_impl::operator()): Adjust to use __do_visit.
5734         * testsuite/20_util/variant/compile.cc: Adjust.
5735         * testsuite/20_util/variant/run.cc: Likewise.
5736
5737 2019-03-06  Jonathan Wakely  <jwakely@redhat.com>
5738
5739         * include/bits/c++config.h (_cpp_lib_char8_t): Add L suffix to
5740         constant.
5741         * testsuite/experimental/feat-char8_t.cc: Likewise.
5742
5743          * include/std/type_traits [C++20] (is_bounded_array)
5744          (is_unbounded_array, is_bounded_array_v, is_unbounded_array_v):
5745          Define.
5746          * testsuite/20_util/is_bounded_array/requirements/
5747          explicit_instantiation.cc: New test.
5748          * testsuite/20_util/is_bounded_array/requirements/typedefs.cc: New
5749          test.
5750          * testsuite/20_util/is_bounded_array/value.cc: New test.
5751          * testsuite/20_util/is_unbounded_array/requirements/
5752          explicit_instantiation.cc: New test.
5753          * testsuite/20_util/is_unbounded_array/requirements/typedefs.cc: New
5754          * test.
5755          * testsuite/20_util/is_unbounded_array/value.cc: New test.
5756
5757         * include/bits/ptr_traits.h [C++20] (pointer_traits<T*>::pointer_to):
5758         Add constexpr.
5759         * testsuite/20_util/pointer_traits/pointer_to_constexpr.cc: New test.
5760
5761 2019-03-05  Jonathan Wakely  <jwakely@redhat.com>
5762
5763         * include/c_compatibility/math.h [C++20] (lerp): Add using
5764         declaration.
5765         * include/c_global/cmath [C++20] (__cpp_lib_interpolate): Define.
5766         (__lerp): Define function template to implement lerp.
5767         (lerp(float, float, float), lerp(double, double, double))
5768         (lerp(long double, long double, long double)): Define for C++20.
5769         * include/std/numeric [C++20] (__cpp_lib_interpolate): Define.
5770         (midpoint(T, T), midpoint(T*, T*)): Define.
5771         * include/std::version [C++20] (__cpp_lib_interpolate): Define.
5772         * testsuite/26_numerics/lerp.cc: New test.
5773         * testsuite/26_numerics/midpoint/floating.cc: New test.
5774         * testsuite/26_numerics/midpoint/integral.cc: New test.
5775         * testsuite/26_numerics/midpoint/pointer.cc: New test.
5776
5777 2019-03-04  Edward Smith-Rowland  <3dw4rd@verizon.net>
5778
5779         PR libstdc++/88996 Implement P0439R0
5780         Make std::memory_order a scoped enumeration.
5781         * include/bits/atomic_base.h: For C++20 make memory_order a scoped enum,
5782         add variables for the old enumerators.  Adjust calls.
5783         * testsuite/29_atomics/headers/atomic/types_std_c++2a.cc: New test.
5784         * testsuite/29_atomics/headers/atomic/types_std_c++2a_neg.cc: New test.
5785
5786 2019-03-04  Jonathan Wakely  <jwakely@redhat.com>
5787
5788         * testsuite/26_numerics/bit/bitops.rot/rotl.cc: Remove bogus dg-do
5789         directive.
5790
5791         * include/std/memory_resource (polymorphic_allocator): Add default
5792         template argument for C++20.
5793         (polymorphic_allocator::allocate_bytes)
5794         (polymorphic_allocator::deallocate_bytes)
5795         (polymorphic_allocator::allocate_object)
5796         (polymorphic_allocator::deallocate_object)
5797         (polymorphic_allocator::new_object)
5798         (polymorphic_allocator::delete_object): New member functions for
5799         C++20.
5800         * testsuite/20_util/polymorphic_allocator/allocate_object.cc: New
5801         test.
5802
5803 2019-03-03  Jonathan Wakely  <jwakely@redhat.com>
5804
5805         PR libstdc++/89562
5806         * src/filesystem/ops-common.h (do_copy_file): Open files in binary
5807         mode for mingw.
5808
5809 2019-03-01  Jonathan Wakely  <jwakely@redhat.com>
5810
5811         * testsuite/util/testsuite_allocator.h (__gnu_test::memory_resource)
5812         [!__cpp_sized_deallocation]: Do not pass size to operator delete.
5813
5814         * include/std/memory (uses_allocator_construction_args): New set of
5815         overloaded functions.
5816         (make_obj_using_allocator, uninitialized_construct_using_allocator):
5817         New functions.
5818         * include/std/memory_resource (polymorphic_allocator::construct)
5819         [__cplusplus > 201703l]: Replace all overloads with a single function
5820         using uses_allocator_construction_args.
5821         * testsuite/20_util/polymorphic_allocator/construct_c++2a.cc: New
5822         test.
5823         * testsuite/20_util/uses_allocator/make_obj.cc: New test.
5824
5825 2019-02-27  Jonathan Wakely  <jwakely@redhat.com>
5826
5827         PR libstdc++/89466
5828         * acinclude.m4 (GLIBCXX_CONFIGURE_DOCBOOK): Reorder check for local
5829         stylesheet directories before check for xsltproc. Try to use
5830         xmlcatalog to find local stylesheet directory before trying hardcoded
5831         paths. Add path used by suse to hardcoded paths. Adjust xsltproc
5832         check to look for the same stylesheet as doc/Makefile.am uses. Don't
5833         use xsltproc if xmlcatalog fails to find a local stylesheet.
5834         * configure.ac: Check for xmlcatalog.
5835         * Makefile.in: Regenerate.
5836         * configure: Likewise.
5837         * doc/Makefile.in: Likewise.
5838         * include/Makefile.in: Likewise.
5839         * libsupc++/Makefile.in: Likewise.
5840         * po/Makefile.in: Likewise.
5841         * python/Makefile.in: Likewise.
5842         * src/Makefile.in: Likewise.
5843         * src/c++11/Makefile.in: Likewise.
5844         * src/c++17/Makefile.in: Likewise.
5845         * src/c++98/Makefile.in: Likewise.
5846         * src/filesystem/Makefile.in: Likewise.
5847         * testsuite/Makefile.in: Likewise.
5848
5849 2019-02-26  Jonathan Wakely  <jwakely@redhat.com>
5850
5851         PR libstdc++/89477
5852         * include/bits/alloc_traits.h (_RequireNotAllocator): New helper for
5853         container deduction guides.
5854         * include/bits/hashtable.h (_RequireNotAllocatorOrIntegral): Likewise.
5855         * include/bits/stl_map.h (map): Use _RequireNotAllocator to constrain
5856         parameters in deduction guides.
5857         * include/bits/stl_multimap.h (multimap): Likewise.
5858         * include/bits/stl_multiset.h (multiset): Likewise.
5859         * include/bits/stl_queue.h (queue, priority_queue): Likewise.
5860         * include/bits/stl_set.h (set): Likewise.
5861         * include/bits/stl_stack.h (stack): Likewise.
5862         * include/bits/unordered_map.h (unordered_map, unordered_multimap):
5863         use _RequireNotAllocator and _RequireNotAllocatorOrIntegral to
5864         constrain parameters in deduction guides.
5865         * include/bits/unordered_set.h (unordered_set, unordered_multiset):
5866         Likewise.
5867         * testsuite/23_containers/map/cons/deduction.cc: Test additional
5868         deduction cases.
5869         * testsuite/23_containers/multiset/cons/deduction.cc: Likewise.
5870         * testsuite/23_containers/set/cons/deduction.cc: Likewise.
5871         * testsuite/23_containers/unordered_map/cons/deduction.cc: Likewise.
5872         * testsuite/23_containers/unordered_multimap/cons/deduction.cc:
5873         Likewise.
5874         * testsuite/23_containers/unordered_multiset/cons/deduction.cc:
5875         Likewise.
5876         * testsuite/23_containers/unordered_set/cons/deduction.cc: Likewise.
5877
5878         PR libstdc++/89416
5879         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Change
5880         to class template and partial specialization using void_t.
5881         (__is_copy_insertable, __is_move_insertable): Adjust base class.
5882
5883 2019-02-24  Jonathan Wakely  <jwakely@redhat.com>
5884
5885         PR libstdc++/89416
5886         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Make
5887         copy and move members public.
5888
5889 2019-02-23  Jonathan Wakely  <jwakely@redhat.com>
5890
5891         * include/std/type_traits (__underlying_type_impl): New helper to
5892         make underlying_type SFINAE-friendly.
5893         (underlying_type): Derive from __underlying_type_impl.
5894         * testsuite/20_util/underlying_type/requirements/typedefs-3.cc: New
5895         test.
5896
5897         PR libstdc++/89446
5898         * include/bits/char_traits.h (__constant_char_array): Check index is
5899         in range before dereferencing.
5900         (char_traits<char>::compare, char_traits<char>::find)
5901         (char_traits<char8_t>::compare, char_traits<char8_t>::find): Return
5902         immediately if n is zero.
5903         (char_traits<wchar_t>::compare, char_traits<wchar_t>::find): Likewise.
5904         Remove workarounds for PR 67026.
5905         * testsuite/21_strings/basic_string_view/operators/char/89446.cc:
5906         New test.
5907         * testsuite/21_strings/basic_string_view/operators/wchar_t/89446.cc:
5908         New test.
5909
5910 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5911
5912         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Adjust.
5913         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
5914
5915 2019-02-22  Jakub Jelinek  <jakub@redhat.com>
5916
5917         PR libstdc++/89402
5918         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Change return
5919         type to std::size_t and argument to type to long double.
5920
5921 2019-02-22  Eric Botcazou  <ebotcazou@adacore.com>
5922
5923         * configure.host (abi_baseline_pair): Adjust for SPARC64/Linux.
5924         * config/abi/post/sparc64-linux-gnu: New directory.
5925         * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: New file.
5926         * config/abi/post/sparc64-linux-gnu/32: New directory.
5927         * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: New file.
5928
5929 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
5930
5931         * testsuite/29_atomics/headers/atomic/types_std_c++20.cc: New test.
5932         * testsuite/29_atomics/headers/atomic/types_std_c++20_neg.cc: New
5933         test.
5934
5935 2019-02-22  Tom Honermann  <tom@honermann.net>
5936
5937         * python/libstdcxx/v6/printers.py (register_type_printers): Add type
5938         printers for u8string and u8string_view.
5939
5940 2019-02-22  Tom Honermann  <tom@honermann.net>
5941
5942         * testsuite/18_support/byte/ops.cc: Validate
5943         std::to_integer<char8_t>, std::to_integer<char16_t>, and
5944         std::to_integer<char32_t>.
5945         * testsuite/18_support/numeric_limits/dr559.cc: Validate
5946         std::numeric_limits<char8_t>.
5947         * testsuite/18_support/numeric_limits/lowest.cc: Validate
5948         std::numeric_limits<char8_t>::lowest().
5949         * testsuite/18_support/numeric_limits/max_digits10.cc: Validate
5950         std::numeric_limits<char8_t>::max_digits10.
5951         * testsuite/18_support/type_info/fundamental.cc: Validate
5952         typeinfo for char8_t.
5953         * testsuite/20_util/from_chars/1_c++20_neg.cc: New test, validating
5954         std::from_chars with char8_t.
5955         * testsuite/20_util/hash/requirements/explicit_instantiation.cc:
5956         Validate explicit instantiation of std::hash<char8_t>.
5957         * testsuite/20_util/is_integral/value.cc: Validate
5958         std::is_integral<char8_t>.
5959         * testsuite/20_util/make_signed/requirements/typedefs-4.cc:
5960         Validate std::make_signed<char8_t>.
5961         * testsuite/21_strings/basic_string/cons/char/deduction.cc:
5962         Validate u8string construction from char8_t sources.
5963         * testsuite/21_strings/basic_string/types/pmr_typedefs.cc: Validate
5964         std::pmr::u8string.
5965         * testsuite/21_strings/basic_string_view/operations/compare/
5966         char/70483.cc: Validate substr operations on u8string_view.
5967         * testsuite/21_strings/basic_string_view/typedefs.cc: Validate that
5968         the u8string_view typedef is defined.
5969         * testsuite/21_strings/char_traits/requirements/
5970         constexpr_functions.cc: Validate char_traits<char8_t> constexpr
5971         member functions.
5972         * testsuite/21_strings/char_traits/requirements/
5973         constexpr_functions_c++17.cc: Validate char_traits<char8_t> C++17
5974         constexpr member functions.
5975         * testsuite/21_strings/headers/string/types_std_c++0x.cc: Validate
5976         that the u8string typedef is defined.
5977         * testsuite/22_locale/locale/cons/unicode.cc: Validate the presence
5978         of the std::codecvt<char16_t, char8_t, std::mbstate_t> and
5979         std::codecvt<char32_t, char8_t, std::mbstate_t> facets.
5980         * testsuite/29_atomics/atomic/cons/assign_neg.cc: Update line
5981         numbers.
5982         * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
5983         * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc:
5984         Likewise.
5985         * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
5986         * testsuite/29_atomics/atomic_integral/is_always_lock_free.cc:
5987         Validate std::atomic<char8_t>::is_always_lock_free
5988         * testsuite/29_atomics/atomic_integral/operators/bitwise_neg.cc:
5989         Update line numbers.
5990         * testsuite/29_atomics/atomic_integral/operators/decrement_neg.cc:
5991         Likewise.
5992         * testsuite/29_atomics/atomic_integral/operators/increment_neg.cc:
5993         Likewise.
5994         * testsuite/experimental/polymorphic_allocator/pmr_typedefs_string.cc:
5995         Validate std::experimental::pmr::u8string.
5996         * testsuite/experimental/string_view/typedefs.cc: Validate that the
5997         u8string_view typedef is defined.
5998         * testsuite/util/testsuite_common_types.h: Add char8_t, char16_t and
5999         char32_t to the typelists.
6000
6001 2019-02-22  Tom Honermann  <tom@honermann.net>
6002
6003         * include/ext/typelist.h: Constrain a partial specialization of
6004         typelist::detail::append_ to only match chain<T1,T2>.
6005
6006 2019-02-21  Jonathan Wakely  <jwakely@redhat.com>
6007
6008         PR libstdc++/89416
6009         * include/bits/alloc_traits.h (__is_alloc_insertable_impl): Replace
6010         class template with class. Replace move and copy member types with
6011         member alias templates, so they are only instantiated when needed.
6012         (__is_copy_insertable, __is_move_insertable): Adjust base class.
6013         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: Enable
6014         test for C++11/14/17 as well.
6015         * testsuite/23_containers/vector/modifiers/push_back/89416.cc: New
6016         test.
6017
6018 2019-02-20  Jakub Jelinek  <jakub@redhat.com>
6019
6020         PR libstdc++/89402
6021         * src/c++98/compatibility-ldbl.cc (_ZNKSt4hashIeEclEe): Add
6022         _GLIBCXX_PURE to the alias declaration.
6023
6024 2019-02-19  Jonathan Wakely  <jwakely@redhat.com>
6025
6026         * testsuite/21_strings/basic_string/literals/types.cc
6027         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string type for u8 literal.
6028         * testsuite/21_strings/basic_string/literals/values.cc
6029         [_GLIBCXX_USE_CHAR8_T]: Likewise.
6030         * testsuite/22_locale/codecvt/char16_t.cc: Adjust for u8 literals
6031         potentially having different type.
6032         * testsuite/22_locale/codecvt/char32_t.cc: Likewise.
6033         * testsuite/22_locale/codecvt/codecvt_utf8/79980.cc: Cast u8 literal
6034         to char.
6035         * testsuite/22_locale/codecvt/codecvt_utf8/wchar_t/1.cc: Likewise.
6036         * testsuite/22_locale/codecvt/utf8.cc: Likewise.
6037         * testsuite/22_locale/conversions/string/2.cc: Remove u8 prefix from
6038         string literals only using basic character set.
6039         * testsuite/22_locale/conversions/string/3.cc: Likewise. Cast other
6040         u8 literals to char.
6041         * testsuite/29_atomics/headers/atomic/macros.cc [_GLIBCXX_USE_CHAR8_T]:
6042         Test ATOMIC_CHAR8_T_LOCK_FREE.
6043         Add missing #error to ATOMIC_CHAR16_T_LOCK_FREE test.
6044         * testsuite/29_atomics/headers/atomic/types_std_c++0x.cc
6045         [_GLIBCXX_USE_CHAR8_T]: Check for std::atomic_char8_t.
6046         * testsuite/experimental/string_view/literals/types.cc
6047         [_GLIBCXX_USE_CHAR8_T]: Adjust expected string_view type for u8
6048         literal.
6049         * testsuite/experimental/string_view/literals/values.cc
6050         [_GLIBCXX_USE_CHAR8_T]: Likewise.
6051
6052 2019-02-19  Tom Honermann  <tom@honermann.net>
6053
6054         * testsuite/18_support/numeric_limits/char8_t.cc: New test cloned
6055         from char16_32_t.cc; validates numeric_limits<char8_t>.
6056         * testsuite/21_strings/basic_string/literals/types-char8_t.cc: New
6057         test cloned from types.cc; validates operator""s for char8_t
6058         returns u8string.
6059         * testsuite/21_strings/basic_string/literals/values-char8_t.cc: New
6060         test cloned from values.cc; validates construction and comparison
6061         of u8string values.
6062         * testsuite/21_strings/basic_string/requirements/
6063         /explicit_instantiation/char8_t/1.cc: New test cloned from
6064         char16_t/1.cc; validates explicit instantiation of
6065         basic_string<char8_t>.
6066         * testsuite/21_strings/basic_string_view/literals/types-char8_t.cc:
6067         New test cloned from types.cc; validates operator""sv for char8_t
6068         returns u8string_view.
6069         * testsuite/21_strings/basic_string_view/literals/
6070         values-char8_t.cc: New test cloned from values.cc; validates
6071         construction and comparison of u8string_view values.
6072         * testsuite/21_strings/basic_string_view/requirements/
6073         explicit_instantiation/char8_t/1.cc: New test cloned from
6074         char16_t/1.cc; validates explicit instantiation of
6075         basic_string_view<char8_t>.
6076         * testsuite/21_strings/char_traits/requirements/char8_t/65049.cc:
6077         New test cloned from char16_t/65049.cc; validates that
6078         char_traits<char8_t> is not vulnerable to the concerns in PR65049.
6079         * testsuite/21_strings/char_traits/requirements/char8_t/
6080         typedefs.cc: New test cloned from char16_t/typedefs.cc; validates
6081         that char_traits<char8_t> member typedefs are present and correct.
6082         * testsuite/21_strings/char_traits/requirements/
6083         explicit_instantiation/char8_t/1.cc: New test cloned from
6084         char16_t/1.cc; validates explicit instantiation of
6085         char_traits<char8_t>.
6086         * testsuite/22_locale/codecvt/char16_t-char8_t.cc: New test cloned
6087         from char16_t.cc: validates
6088         codecvt<char16_t, char8_t, mbstate_t>.
6089         * testsuite/22_locale/codecvt/char32_t-char8_t.cc: New test cloned
6090         from char32_t.cc: validates
6091         codecvt<char32_t, char8_t, mbstate_t>.
6092         * testsuite/22_locale/codecvt/utf8-char8_t.cc: New test cloned from
6093         utf8.cc; validates codecvt<char16_t, char8_t, std::mbstate_t> and
6094         codecvt<char32_t, char8_t, std::mbstate_t>.
6095         * testsuite/27_io/filesystem/path/native/string-char8_t.cc: New
6096         test cloned from string.cc; validates filesystem::path construction
6097         from char8_t input.
6098         * testsuite/experimental/feat-char8_t.cc: New test; validates that
6099         the __cpp_lib_char8_t feature test macro is defined with the
6100         correct value.
6101         * testsuite/experimental/filesystem/path/native/string-char8_t.cc:
6102         New test cloned from string.cc; validates filesystem::path
6103         construction from char8_t input.
6104         * testsuite/experimental/string_view/literals/types-char8_t.cc: New
6105         test cloned from types.cc; validates operator""sv for char8_t
6106         returns u8string_view.
6107         * testsuite/experimental/string_view/literals/values-char8_t.cc:
6108         New test cloned from values.cc; validates construction and
6109         comparison of u8string_view values.
6110         * testsuite/experimental/string_view/requirements/
6111         explicit_instantiation/char8_t/1.cc: New test cloned from
6112         char16_t/1.cc; validates explicit instantiation of
6113         basic_string_view<char8_t>.
6114         * testsuite/ext/char8_t/atomic-1.cc: New test; validates that
6115         ATOMIC_CHAR8_T_LOCK_FREE is not defined if char8_t support is not
6116         enabled.
6117
6118 2019-02-19  Tom Honermann  <tom@honermann.net>
6119
6120         P0482R5 char8_t: Standard library support
6121         * config/abi/pre/gnu-versioned-namespace.ver (CXXABI_2.0): Add
6122         typeinfo symbols for char8_t.
6123         * config/abi/pre/gnu.ver: Add CXXABI_1.3.12.
6124         (GLIBCXX_3.4.26): Add symbols for specializations of
6125         numeric_limits and codecvt that involve char8_t.
6126         (CXXABI_1.3.12): Add typeinfo symbols for char8_t.
6127         * include/bits/atomic_base.h: Add atomic_char8_t.
6128         * include/bits/basic_string.h: Add std::hash<u8string> and
6129         operator""s(const char8_t*, size_t).
6130         * include/bits/c++config: Define _GLIBCXX_USE_CHAR8_T and
6131         __cpp_lib_char8_t.
6132         * include/bits/char_traits.h: Add char_traits<char8_t>.
6133         * include/bits/codecvt.h: Add
6134         codecvt<char16_t, char8_t, mbstate_t>,
6135         codecvt<char32_t, char8_t, mbstate_t>,
6136         codecvt_byname<char16_t, char8_t, mbstate_t>, and
6137         codecvt_byname<char32_t, char8_t, mbstate_t>.
6138         * include/bits/cpp_type_traits.h: Add __is_integer<char8_t> to
6139         recognize char8_t as an integral type.
6140         * include/bits/fs_path.h: (path::__is_encoded_char): Recognize
6141         char8_t.
6142         (path::u8string): Return std::u8string when char8_t support is
6143         enabled.
6144         (path::generic_u8string): Likewise.
6145         (path::_S_convert): Handle conversion from char8_t input.
6146         (path::_S_str_convert): Likewise.
6147         * include/bits/functional_hash.h: Add hash<char8_t>.
6148         * include/bits/locale_conv.h (__str_codecvt_out): Add overloads for
6149         char8_t.
6150         * include/bits/locale_facets.h (_GLIBCXX_NUM_UNICODE_FACETS): Bump
6151         for new char8_t specializations.
6152         * include/bits/localefwd.h: Add missing declarations of
6153         codecvt<char16_t, char, mbstate_t> and
6154         codecvt<char32_t, char, mbstate_t>.  Add char8_t declarations
6155         codecvt<char16_t, char8_t, mbstate_t> and
6156         codecvt<char32_t, char8_t, mbstate_t>.
6157         * include/bits/postypes.h: Add u8streampos
6158         * include/bits/stringfwd.h: Add declarations of
6159         char_traits<char8_t> and u8string.
6160         * include/c_global/cstddef: Add __byte_operand<char8_t>.
6161         * include/experimental/bits/fs_path.h (path::__is_encoded_char):
6162         Recognize char8_t.
6163         (path::u8string): Return std::u8string when char8_t support is
6164         enabled.
6165         (path::generic_u8string): Likewise.
6166         (path::_S_convert): Handle conversion from char8_t input.
6167         (path::_S_str_convert): Likewise.
6168         * include/experimental/string: Add u8string.
6169         * include/experimental/string_view: Add u8string_view,
6170         hash<experimental::u8string_view>, and
6171         operator""sv(const char8_t*, size_t).
6172         * include/std/atomic: Add atomic<char8_t> and atomic_char8_t.
6173         * include/std/charconv (__is_int_to_chars_type): Recognize char8_t
6174         as a character type.
6175         * include/std/limits: Add numeric_limits<char8_t>.
6176         * include/std/string_view: Add u8string_view,
6177         hash<experimental::u8string_view>, and
6178         operator""sv(const char8_t*, size_t).
6179         * include/std/type_traits: Add __is_integral_helper<char8_t>,
6180         __make_unsigned<char8_t>, and __make_signed<char8_t>.
6181         * libsupc++/atomic_lockfree_defines.h: Define
6182         ATOMIC_CHAR8_T_LOCK_FREE.
6183         * src/c++11/Makefile.am: Compile with -fchar8_t when compiling
6184         codecvt.cc and limits.cc so that char8_t specializations of
6185         numeric_limits and codecvt and emitted.
6186         * src/c++11/Makefile.in: Likewise.
6187         * src/c++11/codecvt.cc: Define members of
6188         codecvt<char16_t, char8_t, mbstate_t>,
6189         codecvt<char32_t, char8_t, mbstate_t>,
6190         codecvt_byname<char16_t, char8_t, mbstate_t>, and
6191         codecvt_byname<char32_t, char8_t, mbstate_t>.
6192         * src/c++11/limits.cc: Define members of
6193         numeric_limits<char8_t>.
6194         * src/c++98/Makefile.am: Compile with -fchar8_t when compiling
6195         locale_init.cc and localename.cc.
6196         * src/c++98/Makefile.in: Likewise.
6197         * src/c++98/locale_init.cc: Add initialization for the
6198         codecvt<char16_t, char8_t, mbstate_t> and
6199         codecvt<char32_t, char8_t, mbstate_t> facets.
6200         * src/c++98/localename.cc: Likewise.
6201         * testsuite/util/testsuite_abi.cc: Validate ABI bump.
6202
6203 2019-02-18  Wilco Dijkstra  <wdijkstr@arm.com>
6204
6205         * 27_io/filesystem/operations/all.cc: Add dg-require-filesystem-ts.
6206         * 27_io/filesystem/operations/resize_file.cc: Likewise.
6207         * 27_io/filesystem/path/generation/normal2.cc: Likewise.
6208
6209 2019-02-14  Jonathan Wakely  <jwakely@redhat.com>
6210
6211         * doc/xml/manual/status_cxx2020.xml: Update P0887R1 status.
6212         * doc/html/*: Regenerate.
6213
6214         * doc/xml/manual/status_cxx2017.xml: Add P0063R3 to status table.
6215         * doc/html/*: Regenerate.
6216
6217         * doc/xml/manual/intro.xml: Document LWG 2586 status.
6218         * include/bits/uses_allocator.h (__uses_alloc): Use const lvalue
6219         allocator type in is_constructible checks.
6220         * testsuite/20_util/scoped_allocator/69293_neg.cc: Adjust dg-error.
6221         * testsuite/20_util/scoped_allocator/dr2586.cc: New test.
6222         * testsuite/20_util/tuple/cons/allocators.cc: Add test using
6223         problematic type from LWG 2586 discussion.
6224         * testsuite/20_util/uses_allocator/69293_neg.cc: Adjust dg-error.
6225         * testsuite/20_util/uses_allocator/cons_neg.cc: Likewise.
6226
6227         * configure.ac: Check for C11 timespec_get function.
6228         * crossconfig.m4 (freebsd, linux, gnu, cygwin, solaris, netbsd)
6229         (openbsd): Likewise
6230         * config.h.in: Regenerate.
6231         * configure: Regenerate.
6232         * include/c_global/ctime (timespec, timespec_get): Add to namespace
6233         std for C++17 and up.
6234
6235         * doc/xml/manual/intro.xml: Document LWG 2537 status.
6236         * include/bits/stl_queue.h
6237         (priority_queue(const Compare&, const Container&, const Alloc&))
6238         (priority_queue(const Compare&, Container&&, const Alloc&)): Call
6239         make_heap.
6240         * testsuite/23_containers/priority_queue/dr2537.cc: New test.
6241
6242         * doc/xml/manual/intro.xml: Document LWG 2566 status.
6243         * include/bits/stl_queue.h (queue, priority_queue): Add static
6244         assertions to enforce LWG 2566 requirement on value_type.
6245         * include/bits/stl_stack.h (stack): Likewise.
6246
6247         PR middle-end/89303
6248         * testsuite/20_util/enable_shared_from_this/89303.cc: New test.
6249
6250         * doc/xml/manual/intro.xml: Document LWG 2735 status.
6251         * include/bits/std_abs.h: Add comment about LWG 2735.
6252         * testsuite/26_numerics/headers/cstdlib/dr2735.cc: New test.
6253
6254 2019-02-13  Jonathan Wakely  <jwakely@redhat.com>
6255
6256         PR libstdc++/89345
6257         * include/std/version [__cpp_impl_destroying_delete]
6258         (__cpp_lib_destroying_delete): Only define for C++2a and later.
6259         * libsupc++/new [__cpp_impl_destroying_delete]
6260         (__cpp_lib_destroying_delete): Likewise.
6261         (destroying_delete_t, destroying_delete): Likewise, but define even
6262         when __cpp_impl_destroying_delete is not defined.
6263         * testsuite/18_support/destroying_delete.cc: New test.
6264
6265 2019-02-11  Jonathan Wakely  <jwakely@redhat.com>
6266
6267         PR libstdc++/89023
6268         * testsuite/17_intro/headers/c++2011/parallel_mode.cc: New test.
6269         * testsuite/17_intro/headers/c++2014/parallel_mode.cc: New test.
6270         * testsuite/17_intro/headers/c++2017/parallel_mode.cc: New test.
6271         * testsuite/28_regex/headers/regex/parallel_mode.cc: Remove.
6272
6273 2019-02-09  Jonathan Wakely  <jwakely@redhat.com>
6274
6275         PR libstdc++/71044
6276         * include/bits/fs_path.h (path::has_root_name)
6277         (path::has_root_directory, path::has_root_path)
6278         (path::has_relative_path, path::has_parent_path)
6279         (path::has_filename, path::has_stem, path::has_extension)
6280         (path::is_absolute, path::is_relative, path::_M_find_extension): Add
6281         noexcept.
6282         * src/c++17/fs_path.cc (path::has_root_name)
6283         (path::has_root_directory, path::has_root_path)
6284         (path::has_relative_path, path::has_parent_path)
6285         (path::has_filename, path::_M_find_extension): Add noexcept.
6286
6287 2019-02-06  Jonathan Wakely  <jwakely@redhat.com>
6288
6289         PR libstdc++/89102 (partial)
6290         * include/std/type_traits (common_type<>): Define.
6291         (common_type<T>): Derive from common_type<T, T>.
6292         * testsuite/20_util/common_type/requirements/explicit_instantiation.cc:
6293         Test zero-length template argument list.
6294         * testsuite/20_util/common_type/requirements/sfinae_friendly_1.cc:
6295         Test additional single argument cases.
6296         * testsuite/20_util/common_type/requirements/sfinae_friendly_2.cc:
6297         Adjust expected error.
6298
6299 2019-02-05  Jonathan Wakely  <jwakely@redhat.com>
6300
6301         PR libstdc++/89128
6302         * include/bits/stl_queue.h (queue, priority_queue): Add deduction
6303         guides.
6304         * include/bits/stl_stack.h (stack): Likewise.
6305         * testsuite/23_containers/priority_queue/deduction.cc: New test.
6306         * testsuite/23_containers/queue/deduction.cc: New test.
6307         * testsuite/23_containers/stack/deduction.cc: New test.
6308
6309         PR libstdc++/89194
6310         * include/std/type_traits (__is_convertible_helper)
6311         (__is_convertible_helper<_From, _To, false>): Revert changes to
6312         support is_nothrow_convertible.
6313         (__is_nt_convertible_helper): New helper.
6314         (is_nothrow_convertible): Use __is_nt_convertible_helper.
6315
6316         * testsuite/23_containers/vector/modifiers/push_back/49836.cc: Restore
6317         use of CopyConsOnlyType, but also test DelAnyAssign for completeness.
6318
6319         PR libstdc++/89130
6320         * include/bits/alloc_traits.h (__is_copy_insertable_impl): Rename to
6321         __is_alloc_insertable_impl. Replace single type member with two
6322         members, one for each of copy and move insertable.
6323         (__is_move_insertable): New trait for internal use.
6324         * include/bits/stl_vector.h (vector::_S_nothrow_relocate(true_type))
6325         (vector::_S_nothrow_relocate(true_type)): New functions to
6326         conditionally check if __relocate_a can throw.
6327         (vector::_S_use_relocate()): Dispatch to _S_nothrow_relocate based
6328         on __is_move_insertable.
6329         (vector::_S_do_relocate): New overloaded functions to conditionally
6330         call __relocate_a.
6331         (vector::_S_relocate): New function that dispatches to _S_do_relocate
6332         based on _S_use_relocate.
6333         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
6334         (vector::_M_default_append): Call _S_relocate instead of __relocate_a.
6335         * testsuite/23_containers/vector/modifiers/push_back/89130.cc: New.
6336
6337         PR libstdc++/89090
6338         * include/bits/stl_uninitialized.h (__relocate_a_1): Make unused
6339         parameter unnamed. Add message to static assertion.
6340         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
6341         (vector::_M_default_append): Use _GLIBCXX17_CONSTEXPR for if constexpr
6342         in C++11 code.
6343
6344 2019-02-05  Marc Glisse  <marc.glisse@inria.fr>
6345
6346         PR libstdc++/87106
6347         * include/bits/stl_uninitialized.h (__is_trivially_relocatable):
6348         Rename...
6349         (__is_bitwise_relocatable): ... to this.
6350         (__relocate_a_1): Adapt.
6351         * include/bits/stl_deque.h (__is_trivially_relocatable): Rename...
6352         (__is_bitwise_relocatable): ... to this.
6353
6354 2019-01-30  Jonathan Wakely  <jwakely@redhat.com>
6355
6356         PR libstdc++/89117
6357         * src/c++17/fs_path.cc (path::replace_extension): Erase extension from
6358         final component as well as from _M_pathname. Append the dot using
6359         operator+= instead of only to _M_pathname.
6360         (path::_M_find_extension): Reformat slightly.
6361         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
6362         Add more test cases.
6363
6364 2019-01-30  Ulrich Drepper  <drepper@redhat.com>
6365
6366         * doc/xml/manual/status_cxx2020.xml: Update P0600 entry.
6367
6368 2019-01-29  Jonathan Wakely  <jwakely@redhat.com>
6369
6370         * testsuite/26_numerics/headers/complex/synopsis.cc: Remove incorrect
6371         constexpr specifiers from arg and proj.
6372
6373         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add missing exports for
6374         __shared_ptr instantiations used by gcc4-compatible ABI.
6375
6376         * include/experimental/forward_list (experimental::erase): Qualify
6377         call to erase_if.
6378         * include/experimental/list (experimental::erase): Likewise.
6379         * include/std/forward_list (std::erase): Likewise.
6380         * include/std/list (std::erase): Likewise.
6381
6382         * testsuite/20_util/reference_wrapper/result_type.cc: Disable for
6383         C++2a.
6384         * testsuite/20_util/reference_wrapper/typedefs-2.cc: Likewise.
6385         * testsuite/20_util/reference_wrapper/typedefs-3.cc: Likewise.
6386         * testsuite/20_util/reference_wrapper/typedefs.cc: Likewise.
6387         * testsuite/30_threads/async/54297.cc: Suppress nodiscard warning.
6388         * testsuite/ext/array_allocator/26875.cc: Likewise.
6389         * testsuite/ext/pool_allocator/allocate_chunk.cc: Likewise.
6390         * testsuite/util/replacement_memory_operators.h: Likewise.
6391         * testsuite/util/testsuite_allocator.h: Likewise.
6392
6393         * include/std/memory_resource (__pool_resource::_M_unpooled): Use
6394         normal mode vector, even for debug mode.
6395         * include/std/vector [_GLIBCXX_DEBUG] (_GLIBCXX_STD_C::pmr::vector):
6396         Define alias template for normal mode vector.
6397
6398 2019-01-28  Jonathan Wakely  <jwakely@redhat.com>
6399
6400         PR libstdc++/68737
6401         * config/locale/generic/c_locale.h (__convert_from_v)
6402         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
6403         * config/os/hpux/os_defines.h: Define _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
6404         * include/bits/locale_facets.tcc (num_put::_M_insert_float)
6405         [_GLIBCXX_USE_C99_STDIO]: Also check _GLIBCXX_HAVE_BROKEN_VSNPRINTF.
6406
6407 2019-01-24  Jonathan Wakely  <jwakely@redhat.com>
6408
6409         PR libstdc++/88840
6410         * include/bits/stl_vector.h (vector::__use_relocate): Replace static
6411         data member with static member function _S_use_relocate().
6412         * include/bits/vector.tcc (vector::reserve, vector::_M_realloc_insert)
6413         (vector::_M_default_append): Use _S_use_relocate() instead of
6414         __use_relocate.
6415
6416         * testsuite/27_io/filesystem/path/compare/strings.cc: Only compare
6417         sign of results.
6418
6419 2019-01-22  Jonathan Wakely  <jwakely@redhat.com>
6420
6421         PR libstdc++/88740
6422         * testsuite/util/testsuite_hooks.h [stderr] (VERIFY): Use fprintf to
6423         write to stderr instead of using printf.
6424
6425 2019-01-21  Jakub Jelinek  <jakub@redhat.com>
6426
6427         PR libstdc++/86590
6428         * include/bits/char_traits.h (__constant_string_p,
6429         __constant_char_array_p): Use __builtin_is_constant_evaluated if
6430         available.
6431
6432 2019-01-20  Ulrich Drepper  <drepper@redhat.com>
6433
6434         Implement C++20 P0600r1.
6435         * include/backward/hash_map: Add nodiscard attribute to empty.
6436         * include/backward/hash_set: Likewise.
6437         * backward/hashtable.h: Likewise.
6438         * include/bits/basic_string.h: Likewise.
6439         * include/bits/forward_list.h: Likewise.
6440         * include/bits/hashtable.h: Likewise.
6441         * include/bits/regex.h: Likewise.
6442         * include/bits/stl_deque.h: Likewise.
6443         * include/bits/stl_list.h: Likewise.
6444         * include/bits/stl_map.h: Likewise.
6445         * include/bits/stl_multimap.h: Likewise.
6446         * include/bits/stl_multiset.h: Likewise.
6447         * include/bits/stl_queue.h: Likewise.
6448         * include/bits/stl_set.h: Likewise.
6449         * include/bits/stl_stack.h: Likewise.
6450         * include/bits/stl_tree.h: Likewise.
6451         * include/bits/stl_vector.h: Likewise.
6452         * include/bits/unordered_map.h: Likewise.
6453         * include/bits/unordered_set.h: Likewise.
6454         * include/debug/array: Likewise.
6455         * include/experimental/any: Likewise.
6456         * include/experimental/bits/fs_path.h: Likewise.
6457         * include/experimental/internet: Likewise.
6458         * include/experimental/string_view: Likewise.
6459         * include/ext/pb_ds/detail/bin_search_tree_/info_fn_imps.hpp:
6460         Likewise.
6461         * include/ext/pb_ds/detail/binary_heap_/binary_heap_.hpp:
6462         Likewise.
6463         * include/ext/pb_ds/detail/binary_heap_/info_fn_imps.hpp:
6464         Likewise.
6465         * include/ext/pb_ds/detail/cc_hash_table_map_/cc_ht_map_.hpp:
6466         Likewise.
6467         * include/ext/pb_ds/detail/cc_hash_table_map_/info_fn_imps.hpp:
6468         Likewise.
6469         * include/ext/pb_ds/detail/cc_hash_table_map_/size_fn_imps.hpp:
6470         Likewise.
6471         * include/ext/pb_ds/detail/gp_hash_table_map_/gp_ht_map_.hpp:
6472         Likewise.
6473         * include/ext/pb_ds/detail/gp_hash_table_map_/info_fn_imps.hpp:
6474         Likewise.
6475         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
6476         info_fn_imps.hpp: Likewise.
6477         * include/ext/pb_ds/detail/left_child_next_sibling_heap_/
6478         left_child_next_sibling_heap_.hpp: Likewise.
6479         * include/ext/pb_ds/detail/list_update_map_/info_fn_imps.hpp:
6480         Likewise.
6481         * include/ext/pb_ds/detail/list_update_map_/lu_map_.hpp:
6482         Likewise.
6483         * include/ext/pb_ds/detail/ov_tree_map_/info_fn_imps.hpp:
6484         Likewise.
6485         * include/ext/pb_ds/detail/ov_tree_map_/ov_tree_map_.hp:
6486         Likewise.
6487         * include/ext/pb_ds/detail/pat_trie_/info_fn_imps.hpp:
6488         Likewise.
6489         * include/ext/pb_ds/detail/pat_trie_/pat_trie_.hpp:
6490         Likewise.
6491         * include/ext/pb_ds/detail/rc_binomial_heap_/rc.hpp:
6492         Likewise.
6493         * include/ext/pb_ds/detail/tree_trace_base.hpp: Likewise.
6494         * include/ext/pb_ds/trie_policy.hpp: Likewise.
6495         * include/ext/rope: Likewise.
6496         * include/ext/slist: Likewise.
6497         * include/ext/vstring.h: Likewise.
6498         * include/profile/array: Likewise.
6499         * include/std/array: Likewise.
6500         * include/tr1/array: Likewise.
6501         * include/tr1/hashtable.h: Likewise.
6502         * include/tr1/regex: Likewise.
6503         * include/tr2/dynamic_bitset: Likewise.
6504         * include/bits/alloc_traits.h: Add nodiscard attribute to
6505         allocate.
6506         * include/experimental/memory_resource: Likewise.
6507         * include/ext/alloc_traits.h: Likewise.
6508         * include/ext/array_allocator.h: Likewise.
6509         * include/ext/bitmap_allocator.h: Likewise.
6510         * include/ext/debug_allocator.h: Likewise.
6511         * include/ext/extptr_allocator.h: Likewise.
6512         * include/ext/mt_allocator.h: Likewise.
6513         * include/ext/new_allocator.h: Likewise.
6514         * include/ext/pool_allocator.h: Likewise.
6515         * include/ext/throw_allocator.h: Likewise.
6516         * include/std/scoped_allocator: Likewise.
6517         * libsupc++/eh_alloc.cc: Likewise.
6518         * include/std/future: Add nodiscard attribute to async.
6519         * libsupc++/new: Add nodiscard attribute to new.
6520
6521 2019-01-18  Jonathan Wakely  <jwakely@redhat.com>
6522
6523         PR libstdc++/87514
6524         PR libstdc++/87520
6525         PR libstdc++/88782
6526         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export new symbol.
6527         * include/bits/shared_ptr.h
6528         (shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...))
6529         (allocate_shared): Change to use new tag type.
6530         * include/bits/shared_ptr_base.h (_Sp_make_shared_tag::_S_eq):
6531         Declare new member function.
6532         (_Sp_alloc_shared_tag): Define new type.
6533         (_Sp_counted_ptr_inplace): Declare __shared_count<_Lp> as a friend.
6534         (_Sp_counted_ptr_inplace::_M_get_deleter) [!__cpp_rtti]: Use
6535         _Sp_make_shared_tag::_S_eq to check type_info.
6536         (__shared_count(Ptr, Deleter),__shared_count(Ptr, Deleter, Alloc)):
6537         Constrain to prevent being called with _Sp_alloc_shared_tag.
6538         (__shared_count(_Sp_make_shared_tag, const _Alloc&, Args&&...)):
6539         Replace constructor with ...
6540         (__shared_count(Tp*&, _Sp_alloc_shared_tag<_Alloc>, Args&&...)): Use
6541         reference parameter so address of the new object can be returned to
6542         the caller. Obtain the allocator from the tag type.
6543         (__shared_ptr(_Sp_make_shared_tag, const Alloc&, Args&&...)): Replace
6544         constructor with ...
6545         (__shared_ptr(_Sp_alloc_shared_tag<Alloc>, Args&&...)): Pass _M_ptr
6546         to the __shared_count constructor.
6547         (__allocate_shared): Change to use new tag type.
6548         * src/c++11/shared_ptr.cc (_Sp_make_shared_tag::_S_eq): Define.
6549
6550 2019-01-17  Jonathan Wakely  <jwakely@redhat.com>
6551
6552         * src/c++17/fs_ops.cc
6553         (equivalent(const path&, const path&, error_code&))
6554         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Use GetFileInformationByHandle to
6555         compare files instead of relying on incomplete info returned by stat.
6556
6557         PR libstdc++/88884
6558         * src/c++17/fs_ops.cc (absolute(const path&, error_code&)): Do nothing
6559         if the path is already absolute.
6560         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize root-directory.
6561         [!_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Pass error_code to current_path.
6562
6563         PR libstdc++/88881
6564         * src/c++17/fs_ops.cc (canonical(const path&, error_code&))
6565         [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Normalize path, to match behaviour
6566         of filesystem::exists.
6567         (create_directories(const path&, error_code&)): Add assertions.
6568         (status(const path&, error_code&)) [_GLIBCXX_FILESYSTEM_IS_WINDOWS]:
6569         Add workaround for bug in _wstat for paths with trailing slash.
6570         * testsuite/27_io/filesystem/operations/create_directories.cc: Adjust
6571         for expected behaviour on mingw.
6572         * testsuite/experimental/filesystem/operations/create_directories.cc:
6573         Likewise.
6574         * testsuite/27_io/filesystem/operations/temp_directory_path.cc: Use
6575         "TMP" instead of "TMPDIR" and clean environment before each test. Do
6576         not test permissions on mingw targets.
6577
6578 2019-01-16  Jonathan Wakely  <jwakely@redhat.com>
6579
6580         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Add exports for fstream
6581         constructors and open members taking wide strings. Fix patterns for
6582         filesystem::path members to match wstring_view parameters. Add
6583         exports for shared_ptr members used by directory iterators.
6584         * src/c++17/fs_ops.cc (remove(const path&, error_code&)): Clear the
6585         error code parameter if the file doesn't exist.
6586         * src/filesystem/ops.cc (remove(const path&, error_code&)):
6587         Likewise.
6588         * testsuite/27_io/filesystem/operations/canonical.cc: Fix expected
6589         values for mingw targets, where "/" is not an absolute path. Do not
6590         test symlinks on mingw targets.
6591         * testsuite/experimental/filesystem/operations/canonical.cc: Likewise.
6592         * testsuite/27_io/filesystem/operations/copy.cc: Do not test symlinks
6593         on mingw targets.
6594         * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
6595         * testsuite/27_io/filesystem/operations/create_directories.cc: Check
6596         that each component of the path is created.
6597         * testsuite/experimental/filesystem/operations/create_directories.cc:
6598         Likewise.
6599         * testsuite/27_io/filesystem/operations/exists.cc: Do not test
6600         permissions on mingw targets.
6601         * testsuite/experimental/filesystem/operations/exists.cc: Likewise.
6602         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
6603         * testsuite/experimental/filesystem/operations/is_empty.cc: Likewise.
6604         * testsuite/27_io/filesystem/operations/permissions.cc: XFAIL for
6605         mingw targets.
6606         * testsuite/experimental/filesystem/operations/permissions.cc:
6607         Likewise.
6608         * testsuite/27_io/filesystem/operations/remove.cc: Do not test
6609         symlinks or permissions on mingw targets.
6610         * testsuite/experimental/filesystem/operations/remove.cc: Likewise.
6611         * testsuite/27_io/filesystem/operations/remove_all.cc: Do not test
6612         symlinks on mingw targets.
6613         * testsuite/experimental/filesystem/operations/remove_all.cc:
6614         Likewise.
6615         * testsuite/27_io/filesystem/operations/status.cc: Do not test
6616         permissions on mingw targets.
6617         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Do not
6618         test symlinks on mingw targets.
6619         * testsuite/experimental/filesystem/operations/space.cc: Fix test
6620         for mingw targets.
6621
6622 2019-02-14  Ulrich Drepper  <drepper@redhat.com>
6623
6624         PR libstdc++/88738
6625         Warn about unused comparisons of shared_ptr/unique_ptr
6626         * include/bits/c++config [_GLIBCXX_NODISCARD]: Define.
6627         * include/bits/shared_ptr.h: Use it for operator ==, !=,
6628         <, <=, >, >= for shared_ptr.
6629         * include/bits/unique_ptr.h: Likewise for unique_ptr.
6630
6631 2019-01-15  Jonathan Wakely  <jwakely@redhat.com>
6632
6633         * include/bits/shared_ptr_base.h (__cpp_lib_shared_ptr_arrays): Define
6634         as 201611L, because P0497R0 changes are supported.
6635         * include/std/version (__cpp_lib_shared_ptr_arrays): Likewise.
6636
6637         * include/bits/erase_if.h [__cplusplus > 201703L]
6638         (__cpp_lib_erase_if): Only define for C++2a.
6639         * include/std/iterator [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
6640         (__cpp_lib_null_iterators): Define.
6641         * include/std/version [__cplusplus >= 201402L && !_GLIBCXX_DEBUG]
6642         (__cpp_lib_null_iterators): Define.
6643         [__cpp_impl_destroying_delete] (__cpp_lib_destroying_delete): Define.
6644
6645         * doc/xml/manual/status_cxx2017.xml: Document P0032R3 and P0307R2
6646         status.
6647         * include/bits/stl_uninitialized.h (__cpp_lib_raw_memory_algorithms):
6648         Define.
6649         * include/std/any (__cpp_lib_any): Define as 201606L, because P0032R3
6650         changes are supported.
6651         * include/std/optional (__cpp_lib_optional): Likewise.
6652         * include/std/variant (__cpp_lib_variant): Likewise.
6653         * include/std/version [!__STRICT_ANSI__]
6654         (__cpp_lib_uncaught_exceptions): Define as long integer.
6655         [__cplusplus >= 201703L] (__cpp_lib_any)
6656         (__cpp_lib_raw_memory_algorithms, __cpp_lib_uncaught_exceptions)
6657         (__cpp_lib_variant): Define for C++17.
6658         [__cplusplus >= 201703L] (__cpp_lib_optional): Update value and define
6659         as long integer.
6660         * libsupc++/exception (__cpp_lib_uncaught_exceptions): Define as long
6661         integer.
6662
6663         * doc/xml/manual/status_cxx2020.xml: Update P1123R0 status.
6664
6665 2019-01-12  Jonathan Wakely  <jwakely@redhat.com>
6666
6667         PR libstdc++/88811
6668         PR libstdc++/83306
6669         * src/filesystem/path.cc: Fix typo. If first path is empty, show []
6670         before second path.
6671         * testsuite/experimental/filesystem/filesystem_error/cons.cc: New
6672         test.
6673
6674 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
6675
6676         * doc/xml/manual/intro.xml: Include new section.
6677         * doc/xml/manual/status_cxx2017.xml: Document more
6678         implementation-defined properties of the library.
6679         * doc/xml/manual/status_cxx2020.xml: Document C++2a status.
6680         * doc/html/*: Regenerate.
6681
6682         * include/bits/refwrap.h [__cplusplus > 201703L]
6683         (_Refwrap_base_arg1, _Refwrap_base_arg2, _Reference_wrapper_base)
6684         (_Reference_wrapper_base_memfun): Do not define for C++2a.
6685         (reference_wrapper): Do not derive from _Reference_wrapper_base_memfun
6686         for C++2a.
6687         (reference_wrapper::operator()): Add static assertion.
6688         * testsuite/20_util/reference_wrapper/incomplete.cc: New test.
6689
6690         * include/std/chrono (duration_values::zero(), duration_values::min())
6691         (duration_values::max()): Add noexcept.
6692         (duration::zero(), duration::min(), duration::max()): Likewise.
6693         (time_point::zero(), time_point::min(), time_point::max()): Likewise.
6694         * testsuite/20_util/duration/requirements/noexcept.cc: New test.
6695         * testsuite/20_util/time_point/requirements/noexcept.cc: New test.
6696
6697         * include/std/version (__cpp_lib_erase_if): Move to C++20 group.
6698
6699 2019-01-11  Jakub Jelinek  <jakub@redhat.com>
6700
6701         * include/std/type_traits (__cpp_lib_is_constant_evaluated): Define.
6702         * include/std/version (__cpp_lib_is_constant_evaluated): Define.
6703
6704 2019-01-11  Jonathan Wakely  <jwakely@redhat.com>
6705
6706         PR libstdc++/88802
6707         * include/bits/functional_hash.h (hash<nullptr_t>): Define
6708         specialization for C++17 (P0513R0, LWG 2817).
6709         * testsuite/20_util/hash/nullptr.cc: New test.
6710
6711         PR libstdc++/88125
6712         * config/abi/pre/gnu.ver (GLIBCXX_3.4.6): Remove unused duplicate
6713         pattern for std::basic_stringbuf::str().
6714
6715         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Correct recent changes to
6716         basic_ostream::operator<< patterns.
6717
6718 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
6719
6720         * testsuite/27_io/filesystem/operations/last_write_time.cc: Fix
6721         test failures on targets with 32-bit time_t.
6722
6723         * include/bits/erase_if.h: Define __cpp_lib_erase_if.
6724         * include/std/deque: Likewise.
6725         * include/std/forward_list: Likewise.
6726         * include/std/list: Likewise.
6727         * include/std/string: Likewise.
6728         * include/std/vector: Likewise.
6729         * include/std/version: Likewise.
6730         * testsuite/21_strings/basic_string/erasure.cc: Test macro.
6731         * testsuite/23_containers/deque/erasure.cc: Likewise.
6732         * testsuite/23_containers/forward_list/erasure.cc: Likewise.
6733         * testsuite/23_containers/list/erasure.cc: Likewise.
6734         * testsuite/23_containers/map/erasure.cc: Likewise.
6735         * testsuite/23_containers/set/erasure.cc: Likewise.
6736         * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
6737         * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
6738         * testsuite/23_containers/vector/erasure.cc: Likewise.
6739
6740         * include/experimental/internet [AI_NUMERICSERV]
6741         (resolver_base::numeric_service): Define conditionally.
6742         * testsuite/experimental/net/internet/resolver/base.cc: Test it
6743         conditionally.
6744         * testsuite/experimental/net/internet/resolver/ops/lookup.cc:
6745         Likewise.
6746
6747 2019-01-10  Ville Voutilainen  <ville.voutilainen@gmail.com>
6748             Jonathan Wakely  <jwakely@redhat.com>
6749
6750         Implement LWG 2221
6751         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten patterns.
6752         (GLIBCXX_3.4.26): Add new exports.
6753         * include/Makefile.am: Add ostream-inst.cc. Move string-inst.cc to
6754         correct list of sources.
6755         * include/Makefile.in: Regenerate.
6756         * include/std/ostream (operator<<(nullptr_t)): New member function.
6757         * src/c++17/ostream-inst.cc: New file.
6758         * testsuite/27_io/basic_ostream/inserters_other/char/lwg2221.cc: New
6759         test.
6760
6761 2019-01-10  Jonathan Wakely  <jwakely@redhat.com>
6762
6763         * testsuite/util/testsuite_fs.h (nonexistent_path): Include name
6764         of the source file containing the caller.
6765         * testsuite/27_io/filesystem/iterators/directory_iterator.cc: Remove
6766         directories created by test.
6767         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
6768         Likewise.
6769         * testsuite/experimental/filesystem/iterators/directory_iterator.cc:
6770         Likewise.
6771         * testsuite/experimental/filesystem/iterators/
6772         recursive_directory_iterator.cc: Likewise.
6773
6774 2019-01-10  Jakub Jelinek  <jakub@redhat.com>
6775
6776         PR tree-optimization/88775
6777         * include/bits/stl_function.h (greater<_Tp*>::operator(),
6778         less<_Tp*>::operator(), greater_equal<_Tp*>::operator(),
6779         less_equal<_Tp*>::operator()): Use __builtin_is_constant_evaluated
6780         instead of __builtin_constant_p if available.  Don't bother with
6781         the pointer comparison in C++11 and earlier.
6782
6783 2019-01-09  Sandra Loosemore  <sandra@codesourcery.com>
6784
6785         PR other/16615
6786
6787         * include/ext/bitmap_allocator.h: Mechanically replace "can not"
6788         with "cannot".
6789
6790 2019-01-09  Jonathan Wakely  <jwakely@redhat.com>
6791
6792         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix expected output
6793         for filesystem::path. Give variables more distinctive names.
6794
6795         * include/std/optional (_Optional_payload_base::_M_copy_assign): New
6796         member function to perform non-trivial assignment.
6797         (_Optional_payload_base::_M_move_assign): Likewise.
6798         (_Optional_payload<T, true, false, true>::operator=)
6799         (_Optional_payload<T, true, true, false>::operator=)
6800         (_Optional_payload<T, true, false, false>::operator=): Call
6801         _M_copy_assign and/or _M_move_assign to do non-trivial assignments.
6802
6803         PR libstdc++/88204
6804         * testsuite/26_numerics/complex/operators/more_constexpr.cc: Do not
6805         test std::complex<long double> if long double format is IBM128.
6806         * testsuite/26_numerics/complex/requirements/more_constexpr.cc:
6807         Likewise.
6808
6809 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
6810
6811         * testsuite/libstdc++-prettyprinters/compat.cc: Test printer support
6812         for old std::unique_ptr layout.
6813         * testsuite/libstdc++-prettyprinters/cxx17.cc: Fix std::variant test
6814         to become valueless. Add filesystem::path tests.
6815
6816         PR libstdc++/87855
6817         * include/std/optional (_Optional_payload_base): New class template
6818         for common code hoisted from _Optional_payload specializations. Use
6819         a template for the union, to allow a partial specialization for
6820         types with non-trivial destructors. Add constructors for in-place
6821         initialization to the union.
6822         (_Optional_payload(bool, const _Optional_payload&)): Use _M_construct
6823         to perform non-trivial copy construction, instead of relying on
6824         non-standard copy elision in a delegating constructor.
6825         (_Optional_payload(bool, _Optional_payload&&)): Likewise for
6826         non-trivial move construction.
6827         (_Optional_payload): Derive from _Optional_payload_base and use it
6828         for everything except the non-trivial assignment operators, which are
6829         defined as needed.
6830         (_Optional_payload<false, C, M>): Derive from the specialization
6831         _Optional_payload<true, false, false> and add a destructor.
6832         (_Optional_base_impl::_M_destruct, _Optional_base_impl::_M_reset):
6833         Forward to corresponding members of _Optional_payload.
6834         (_Optional_base_impl::_M_is_engaged, _Optional_base_impl::_M_get):
6835         Hoist common members from _Optional_base.
6836         (_Optional_base): Make all members and base class public.
6837         (_Optional_base::_M_get, _Optional_base::_M_is_engaged): Move to
6838         _Optional_base_impl.
6839         * python/libstdcxx/v6/printers.py (StdExpOptionalPrinter): Add
6840         support for new std::optional layout.
6841         * testsuite/libstdc++-prettyprinters/compat.cc: New test.
6842
6843         PR libstdc++/88066
6844         * include/bits/locale_conv.h: Use <> for includes not "".
6845         * include/ext/random: Likewise.
6846         * include/ext/vstring.h: Likewise.
6847
6848 2019-01-08  Rainer Orth  <ro@CeBiTec.Uni-Bielefeld.DE>
6849
6850         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Tighten existing patterns.
6851         (GLIBCXX_3.4.21): Likewise.
6852
6853 2019-01-08  Jonathan Wakely  <jwakely@redhat.com>
6854
6855         PR libstdc++/88749
6856         * src/filesystem/ops.cc (last_write_time): Fix preprocessor condition
6857         to match the one that controls whether utimbuf and utime are declared.
6858
6859 2019-01-07  Jonathan Wakely  <jwakely@redhat.com>
6860
6861         PR libstdc++/87787
6862         * include/bits/char_traits.h (char_traits::move): Do not pass null
6863         pointers to memmove.
6864         * include/bits/locale_facets.h
6865         (ctype<char>::widen(const char*, const char*, char*)): Do not
6866         pass null pointers to memcpy.
6867         (ctype<char>::narrow(const char*, const char*, char, char*)):
6868         Likewise.
6869         (ctype<char>::do_widen(const char*, const char*, char*)):
6870         Likewise.
6871         (ctype<char>::do_narrow(const char*, const char*, char, char*)):
6872         Likewise.
6873
6874         * doc/xml/manual/spine.xml: Update copyright years.
6875         * doc/xml/manual/status_cxx2017.xml: Adjust note about -lstdc++fs.
6876         * doc/xml/manual/using.xml: Remove requirement to link with -lstdc++fs
6877         for C++17 filesystem library.
6878         * doc/html/*: Regenerate.
6879
6880         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for truncate.
6881         * config.h.in: Regenerate.
6882         * config/abi/pre/gnu.ver: Order patterns for filesystem operations
6883         alphabetically and add missing entries for copy_symlink,
6884         hard_link_count, rename, and resize_file.
6885         * configure: Regenerate.
6886         * src/c++17/fs_ops.cc (resize_file): Remove #if so posix::truncate is
6887         used unconditionally.
6888         * src/filesystem/ops-common.h (__gnu_posix::truncate)
6889         [!_GLIBCXX_HAVE_TRUNCATE]: Provide fallback definition that only
6890         supports truncating to zero length.
6891         * testsuite/27_io/filesystem/operations/all.cc: New test.
6892         * testsuite/27_io/filesystem/operations/resize_file.cc: New test.
6893
6894 2019-01-06  Jonathan Wakely  <jwakely@redhat.com>
6895
6896         PR libstdc++/86756
6897         * acinclude.m4 (GLIBCXX_CHECK_FILESYSTEM_DEPS): Check for utime and
6898         lstat and define _GLIBCXX_USE_UTIME and _GLIBCXX_USE_LSTAT.
6899         * config.h.in: Regenerate.
6900         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export symbols for
6901         remaining std::filesystem types and functions.
6902         * configure: Regenerate.
6903         * src/c++17/Makefile.am: Add C++17 filesystem sources.
6904         * src/c++17/Makefile.in: Regenerate.
6905         * src/c++17/cow-fs_dir.cc: Move src/filesystem/cow-std-dir.cc to
6906         here, and change name of included file.
6907         * src/c++17/cow-fs_ops.cc: Move src/filesystem/cow-std-ops.cc to
6908         here, and change name of included file.
6909         * src/c++17/fs_dir.cc: Move src/filesystem/std-dir.cc to here. Change
6910         path to dir-common.h.
6911         * src/c++17/fs_ops.cc: Move src/filesystem/std-ops.cc to here. Change
6912         path to ops-common.h. Disable -Wunused-parameter warnings.
6913         (internal_file_clock): Define unconditionally.
6914         [!_GLIBCXX_HAVE_SYS_STAT_H] (internal_file_clock::from_stat): Do not
6915         define.
6916         (do_copy_file, do_space): Move definitions to ops.common.h.
6917         (copy, file_size, hard_link_count, last_write_time, space): Only
6918         perform operation when _GLIBCXX_HAVE_SYS_STAT_H is defined, otherwise
6919         report an error.
6920         (last_write_time, read_symlink): Remove unused attributes from
6921         parameters.
6922         * src/filesystem/Makefile.am: Remove C++17 filesystem sources.
6923         * src/filesystem/Makefile.in: Regenerate.
6924         * src/filesystem/cow-std-dir.cc: Move to src/c++17/cow-fs_dir.cc.
6925         * src/filesystem/cow-std-ops.cc: Move to src/c++17/cow-fs_ops.cc.
6926         * src/filesystem/std-dir.cc: Move to src/c++17/fs_dir.cc.
6927         * src/filesystem/std-ops.cc: Move to src/c++17/fs_ops.cc.
6928         * src/filesystem/dir-common.h [!_GLIBCXX_HAVE_DIRENT_H]: Define
6929         dummy types and functions instead of using #error.
6930         * src/filesystem/dir.cc [!_GLIBCXX_HAVE_DIRENT_H]: Use #error.
6931         * src/filesystem/ops-common.h [!_GLIBCXX_USE_LSTAT] (lstat): Define
6932         in terms of stat.
6933         [!_GLIBCXX_HAVE_UNISTD_H]: Define dummy types and functions.
6934         (do_copy_file, do_space): Move definitions here from std-ops.cc.
6935         * src/filesystem/ops.cc: Adjust calls to do_copy_file and do_space
6936         to account for new namespace.
6937         * testsuite/27_io/filesystem/directory_entry/86597.cc: Remove
6938         -lstdc++fs from dg-options.
6939         * testsuite/27_io/filesystem/directory_entry/lwg3171.cc: Likewise.
6940         * testsuite/27_io/filesystem/file_status/1.cc: Likewise.
6941         * testsuite/27_io/filesystem/filesystem_error/cons.cc: Likewise.
6942         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Likewise.
6943         * testsuite/27_io/filesystem/iterators/directory_iterator.cc:
6944         Likewise.
6945         * testsuite/27_io/filesystem/iterators/pop.cc: Likewise.
6946         * testsuite/27_io/filesystem/iterators/recursive_directory_iterator.cc:
6947         Likewise.
6948         * testsuite/27_io/filesystem/operations/absolute.cc: Likewise.
6949         * testsuite/27_io/filesystem/operations/canonical.cc: Likewise.
6950         * testsuite/27_io/filesystem/operations/copy.cc: Likewise.
6951         * testsuite/27_io/filesystem/operations/copy_file.cc: Likewise.
6952         * testsuite/27_io/filesystem/operations/create_directories.cc:
6953         Likewise.
6954         * testsuite/27_io/filesystem/operations/create_directory.cc: Likewise.
6955         * testsuite/27_io/filesystem/operations/create_symlink.cc: Likewise.
6956         * testsuite/27_io/filesystem/operations/current_path.cc: Likewise.
6957         * testsuite/27_io/filesystem/operations/equivalent.cc: Likewise.
6958         * testsuite/27_io/filesystem/operations/exists.cc: Likewise.
6959         * testsuite/27_io/filesystem/operations/file_size.cc: Likewise.
6960         * testsuite/27_io/filesystem/operations/is_empty.cc: Likewise.
6961         * testsuite/27_io/filesystem/operations/last_write_time.cc: Likewise.
6962         * testsuite/27_io/filesystem/operations/permissions.cc: Likewise.
6963         * testsuite/27_io/filesystem/operations/proximate.cc: Likewise.
6964         * testsuite/27_io/filesystem/operations/read_symlink.cc: Likewise.
6965         * testsuite/27_io/filesystem/operations/relative.cc: Likewise.
6966         * testsuite/27_io/filesystem/operations/remove.cc: Likewise.
6967         * testsuite/27_io/filesystem/operations/remove_all.cc: Likewise.
6968         * testsuite/27_io/filesystem/operations/space.cc: Likewise.
6969         * testsuite/27_io/filesystem/operations/status.cc: Likewise.
6970         * testsuite/27_io/filesystem/operations/symlink_status.cc: Likewise.
6971         * testsuite/27_io/filesystem/operations/temp_directory_path.cc:
6972         Likewise.
6973         * testsuite/27_io/filesystem/operations/weakly_canonical.cc: Likewise.
6974
6975
6976         PR libstdc++/86756
6977         * config/abi/pre/gnu.ver (GLIBCXX_3.4): Make various patterns for
6978         typeinfo and vtables less greedy.
6979         (GLIBCXX_3.4.26): Export symbols for std::filesystem::path.
6980         * src/c++17/Makefile.am: Add fs_path.cc and cow-fs_path.cc.
6981         * src/c++17/Makefile.in: Regenerate.
6982         * src/c++17/cow-fs_path.cc: Move src/filesystem/cow-std-path.cc to
6983         here, and change name of included file.
6984         * src/c++17/fs_path.cc: Move src/filesystem/std-path.cc to here.
6985         * src/filesystem/Makefile.am: Remove std-path.cc and cow-std-path.cc
6986         from sources.
6987         * src/filesystem/Makefile.in: Regenerate.
6988         * src/filesystem/cow-std-path.cc: Move to src/c++17/cow-fs_path.cc.
6989         * src/filesystem/std-path.cc: Move to src/c++17/fs_path.cc.
6990         * testsuite/27_io/filesystem/path/append/path.cc: Remove -lstdc++fs
6991         from dg-options and remove dg-require-filesystem-ts.
6992         * testsuite/27_io/filesystem/path/append/source.cc: Likewise.
6993         * testsuite/27_io/filesystem/path/assign/assign.cc: Likewise.
6994         * testsuite/27_io/filesystem/path/assign/copy.cc: Likewise.
6995         * testsuite/27_io/filesystem/path/compare/compare.cc: Likewise.
6996         * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
6997         * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
6998         * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
6999         * testsuite/27_io/filesystem/path/concat/path.cc: Likewise.
7000         * testsuite/27_io/filesystem/path/concat/strings.cc: Likewise.
7001         * testsuite/27_io/filesystem/path/construct/80762.cc: Likewise.
7002         * testsuite/27_io/filesystem/path/construct/copy.cc: Likewise.
7003         * testsuite/27_io/filesystem/path/construct/default.cc: Likewise.
7004         * testsuite/27_io/filesystem/path/construct/format.cc: Likewise.
7005         * testsuite/27_io/filesystem/path/construct/locale.cc: Likewise.
7006         * testsuite/27_io/filesystem/path/construct/range.cc: Likewise.
7007         * testsuite/27_io/filesystem/path/construct/string_view.cc: Likewise.
7008         * testsuite/27_io/filesystem/path/decompose/extension.cc: Likewise.
7009         * testsuite/27_io/filesystem/path/decompose/filename.cc: Likewise.
7010         * testsuite/27_io/filesystem/path/decompose/parent_path.cc: Likewise.
7011         * testsuite/27_io/filesystem/path/decompose/relative_path.cc: Likewise.
7012         * testsuite/27_io/filesystem/path/decompose/root_directory.cc:
7013         Likewise.
7014         * testsuite/27_io/filesystem/path/decompose/root_name.cc: Likewise.
7015         * testsuite/27_io/filesystem/path/decompose/root_path.cc: Likewise.
7016         * testsuite/27_io/filesystem/path/decompose/stem.cc: Likewise.
7017         * testsuite/27_io/filesystem/path/generation/normal.cc: Likewise.
7018         * testsuite/27_io/filesystem/path/generation/normal2.cc: Likewise.
7019         * testsuite/27_io/filesystem/path/generation/proximate.cc: Likewise.
7020         * testsuite/27_io/filesystem/path/generation/relative.cc: Likewise.
7021         * testsuite/27_io/filesystem/path/generic/generic_string.cc: Likewise.
7022         * testsuite/27_io/filesystem/path/itr/components.cc: Likewise.
7023         * testsuite/27_io/filesystem/path/itr/traversal.cc: Likewise.
7024         * testsuite/27_io/filesystem/path/modifiers/clear.cc: Likewise.
7025         * testsuite/27_io/filesystem/path/modifiers/make_preferred.cc:
7026         Likewise.
7027         * testsuite/27_io/filesystem/path/modifiers/remove_filename.cc:
7028         Likewise.
7029         * testsuite/27_io/filesystem/path/modifiers/replace_extension.cc:
7030         Likewise.
7031         * testsuite/27_io/filesystem/path/modifiers/replace_filename.cc:
7032         Likewise.
7033         * testsuite/27_io/filesystem/path/modifiers/swap.cc: Likewise.
7034         * testsuite/27_io/filesystem/path/native/string.cc: Likewise.
7035         * testsuite/27_io/filesystem/path/nonmember/append.cc: Likewise.
7036         * testsuite/27_io/filesystem/path/nonmember/hash_value.cc: Likewise.
7037         * testsuite/27_io/filesystem/path/query/empty.cc: Likewise.
7038         * testsuite/27_io/filesystem/path/query/has_extension.cc: Likewise.
7039         * testsuite/27_io/filesystem/path/query/has_filename.cc: Likewise.
7040         * testsuite/27_io/filesystem/path/query/has_parent_path.cc: Likewise.
7041         * testsuite/27_io/filesystem/path/query/has_relative_path.cc: Likewise.
7042         * testsuite/27_io/filesystem/path/query/has_root_directory.cc:
7043         Likewise.
7044         * testsuite/27_io/filesystem/path/query/has_root_name.cc: Likewise.
7045         * testsuite/27_io/filesystem/path/query/has_root_path.cc: Likewise.
7046         * testsuite/27_io/filesystem/path/query/has_stem.cc: Likewise.
7047         * testsuite/27_io/filesystem/path/query/is_absolute.cc: Likewise.
7048         * testsuite/27_io/filesystem/path/query/is_relative.cc: Likewise.
7049
7050         PR libstdc++/87431
7051         * include/std/variant (_Variant_storage<true, _Types...>::_M_valid):
7052         Check is_trivially_copyable instead of is_scalar.
7053         (variant::emplace<N, Args>(Args&&...)): If construction of the new
7054         contained value can throw and its type is trivially copyable then
7055         construct into a temporary variant and move from it, to provide the
7056         strong exception safety guarantee.
7057         (variant::emplace<N, U, Args>(initializer_list<U>, Args&&...)):
7058         Likewise.
7059         * testsuite/20_util/variant/87431.cc: New test.
7060         * testsuite/20_util/variant/run.cc: Adjust test so that throwing
7061         conversion causes valueless state.
7062
7063         PR libstdc++/88607
7064         * testsuite/17_intro/headers/c++1998/charset.cc: New test.
7065         * testsuite/17_intro/headers/c++2011/charset.cc: New test.
7066         * testsuite/17_intro/headers/c++2014/charset.cc: New test.
7067         * testsuite/17_intro/headers/c++2017/charset.cc: New test.
7068         * testsuite/17_intro/headers/c++2020/charset.cc: New test.
7069
7070 2019-01-05  Jonathan Wakely  <jwakely@redhat.com>
7071
7072         * include/bits/fs_fwd.h (__file_clock): Define new clock.
7073         (file_time_type): Redefine in terms of __file_clock.
7074         * src/filesystem/ops-common.h (file_time): Add FIXME comment about
7075         overflow.
7076         * src/filesystem/std-ops.cc (is_set(perm_options, perm_options)): Give
7077         internal linkage.
7078         (internal_file_lock): New helper type for accessing __file_clock.
7079         (do_copy_file): Use internal_file_lock to convert system time to
7080         file_time_type.
7081         (last_write_time(const path&, error_code&)): Likewise.
7082         (last_write_time(const path&, file_time_type, error_code&)): Likewise.
7083
7084 2019-01-04  Jonathan Wakely  <jwakely@redhat.com>
7085
7086         * config/abi/pre/gnu.ver (GLIBCXX_3.4.21): Make patterns less greedy
7087         for const member functions of std::basic_string.
7088         (GLIBCXX_3.4.26): Export member functions of std::basic_string added
7089         in C++17.
7090         * include/bits/basic_string.h (basic_string(__sv_wrapper, const A&)):
7091         Make non-standard constructor private.
7092         [!_GLIBCXX_USE_CXX11_ABI] (basic_string(__sv_wrapper, const A&)):
7093         Likewise.
7094         * include/bits/basic_string.tcc (std::string, std::wstring): Declare
7095         explicit instantiations for C++17 as well as earlier dialects.
7096         * src/c++17/Makefile.am: Add new source files.
7097         * src/c++17/Makefile.in: Regenerate.
7098         * src/c++17/cow-string-inst.cc: New file defining explicit
7099         instantiations for basic_string member functions added in C++17.
7100         * src/c++17/string-inst.cc: Likewise.
7101
7102         * config/abi/pre/gnu.ver (GLIBCXX_3.4.26): Export allocator-extended
7103         copy/move constructors for old std::basic_string.
7104         * include/bits/basic_string.h [!_GLIBCXX_USE_CXX11_ABI]
7105         (basic_string::reference, basic_string::const_reference): Define
7106         as plain references for C++11 and later.
7107         (basic_string::basic_string()): Put constructor body outside
7108         preprocessor conditional groups.
7109         (basic_string::basic_string(basic_string&&)): Move _Alloc_hider
7110         instead of copying it.
7111         (basic_string::basic_string(const basic_string&, const _Alloc&)):
7112         Define.
7113         (basic_string::basic_string(basic_string&&, const _Alloc&)):
7114         Define.
7115         * include/bits/fs_path.h [!_GLIBCXX_USE_CXX11_ABI]: Remove special
7116         cases for old basic_string.
7117         * testsuite/21_strings/basic_string/cons/char/8.cc: Test
7118         allocator-extended constructors unconditionally. Add extra members to
7119         allocator type when using old string ABI.
7120         * testsuite/21_strings/basic_string/allocator/71964.cc: Enable test
7121         for old string ABI.
7122         * testsuite/21_strings/basic_string/cons/wchar_t/8.cc: Likewise.
7123
7124         * testsuite/23_containers/list/61347.cc: Avoid spurious failure when
7125         -fno-inline added to test flags.
7126
7127         * testsuite/21_strings/basic_string/requirements/
7128         explicit_instantiation/debug.cc: Remove XFAIL for old ABI.
7129
7130         * testsuite/27_io/filesystem/filesystem_error/copy.cc: Fix static
7131         assertion failures with old std::string ABI.
7132
7133         * include/bits/fs_path.h (path::_List::erase): Replace both overloads
7134         with ...
7135         (path::pop_back(), path::_M_erase_from(const_iterator)): New member
7136         functions that will only erase elements at the end.
7137         * src/filesystem/std-path.cc (path::_List::_Impl::pop_back()): Define.
7138         (path::_List::_Impl::_M_erase_from(const_iterator)): Define.
7139         (path::_List::operator=(const _List&)): Use _M_erase_from(p) instead
7140         of erase(p, end()).
7141         (path::_List::pop_back()): Define.
7142         (path::_List::_M_erase_from(const_iterator)): Define.
7143         (path::operator/=(const path&)): Use pop_back to remove last component
7144         and _M_erase_from to remove multiple components.
7145         (path::_M_append(basic_string_view<value_type>)): Likewise.
7146         (path::operator+=(const path&)): Likewise.
7147         (path::_M_concat(basic_string_view<value_type>)): Likewise.
7148         (path::remove_filename()): Likewise.
7149         (path::lexically_normal()): Use _List::_Impl iterators instead of
7150         path::iterator. Use pop_back to remove components from the end. Clear
7151         trailing filename, instead of using erase(const_iterator) to remove
7152         a non-final component.
7153         * testsuite/27_io/filesystem/path/generation/normal.cc: Test
7154         additional cases.
7155         * testsuite/27_io/filesystem/path/generation/normal2.cc: New test.
7156
7157         * src/filesystem/std-path.cc (path::operator+=(const path&)): Fix
7158         incorrect treatment of empty filename after trailing slash.
7159         * testsuite/27_io/filesystem/path/concat/path.cc: Test problem case.
7160
7161         * testsuite/21_strings/basic_string/modifiers/assign/char/
7162         move_assign_optim.cc: Avoid spurious failure when -fno-inline added
7163         to test flags.
7164         * testsuite/21_strings/basic_string/modifiers/assign/wchar_t/
7165         move_assign_optim.cc: Likewise.
7166
7167 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
7168             Jakub Jelinek  <jakub@redhat.com>
7169
7170         PR libstdc++/88607
7171         * include/experimental/memory: Replace UTF-8 quote characters.
7172         * include/std/future: Replace UTF-8 "em dash" characters.
7173
7174 2019-01-03  Jonathan Wakely  <jwakely@redhat.com>
7175
7176         PR libstdc++/88607
7177         * include/bits/forward_list.h: Replace UTF-8 "ligature fi" character.
7178         * include/debug/forward_list: Likewise.
7179         * include/experimental/bits/shared_ptr.h: Remove UTF-8 "section sign"
7180         character.
7181         * include/experimental/chrono: Likewise.
7182         * include/experimental/functional: Likewise.
7183         * include/experimental/ratio: Likewise.
7184         * include/experimental/system_error: Likewise.
7185         * include/experimental/tuple: Likewise.
7186         * include/experimental/type_traits: Likewise.
7187         * include/parallel/workstealing.h: Replace UTF-8 "en dash" character.
7188         * include/parallel/multiseq_selection.h: Likewise.
7189
7190         PR libstdc++/88681
7191         * config/abi/pre/gnu.ver: Add missing exports.
7192         * testsuite/22_locale/collate_byname/88681.cc: New test.
7193         * testsuite/22_locale/time_get/get/char/88681.cc: New test.
7194         * testsuite/22_locale/time_get/get/wchar_t/88681.cc: New test.
7195
7196 2019-01-02  Jonathan Wakely  <jwakely@redhat.com>
7197
7198         * testsuite/23_containers/map/cons/deduction.cc: Test deduction from
7199         initializer_list<value_type> and from input iterator ranges.
7200         * testsuite/23_containers/multimap/cons/deduction.cc: Likewise.
7201
7202         * testsuite/experimental/string_view/element_access/char/empty.cc:
7203         Fix year range in copyright header.
7204
7205 2019-01-02  Joel Brobecker  <brobecker@adacore.com>
7206
7207         * testsuite/21_strings/basic_string_view/element_access/char/empty.cc:
7208         Fix year range in copyright header.
7209
7210 2019-01-01  Jakub Jelinek  <jakub@redhat.com>
7211
7212         Update copyright years.
7213 \f
7214 Copyright (C) 2019-2020 Free Software Foundation, Inc.
7215
7216 Copying and distribution of this file, with or without modification,
7217 are permitted in any medium without royalty provided the copyright
7218 notice and this notice are preserved.