1 2020-05-29 H.J. Lu <hjl.tools@gmail.com>
4 * configure: Regenerated.
6 2020-05-29 François Dumont <fdumont@gcc.gnu.org>
9 * include/bits/hashtable_policy.h (_Insert_base<>::try_emplace): New.
10 * include/bits/unordered_map.h (unordered_map<>::try_emplace): Adapt.
11 (unordered_map<>::insert_or_assign): Adapt.
13 2020-05-27 Jonathan Wakely <jwakely@redhat.com>
16 * include/bits/atomic_base.h (__atomic_impl::load): Add
17 cv-qualifiers to parameter so that _Tp is deduced as the
19 * testsuite/29_atomics/atomic_float/95282.cc: New test.
21 2020-05-27 Jonathan Wakely <jwakely@redhat.com>
24 * include/std/ranges (transform_view::_Sentinel): Allow hidden
25 friends to work with _Iterator<true> and _Iterator<false>.
26 (join_view::_Sentinel): Likewise.
27 * testsuite/std/ranges/adaptors/95322.cc: New test.
29 2020-05-27 Jonathan Wakely <jwakely@redhat.com>
32 * include/bits/stl_iterator.h (reverse_iterator): Fix comparison
33 operators to use the correct operations on the underlying
35 * testsuite/24_iterators/reverse_iterator/rel_ops.cc: New test.
37 2020-05-27 Jonathan Wakely <jwakely@redhat.com>
39 * testsuite/18_support/comparisons/categories/zero_neg.cc: New test.
41 2020-05-26 Patrick Palka <ppalka@redhat.com>
44 * include/bits/stl_iterator.h (__detail::_Common_iter_proxy):
45 Remove and instead define it ...
46 (common_iterator::_Proxy): ... here.
47 (common_iterator::operator->): Use it.
48 * testsuite/24_iterators/common_iterator/2.cc: New test.
49 * testsuite/std/ranges/adaptors/95322.cc: New test.
51 2020-05-23 Patrick Palka <ppalka@redhat.com>
54 * testsuite/std/ranges/adaptors/93978.cc: Add -Wall to
55 dg-additional-options. Avoid unused-but-set-variable warning.
57 2020-05-23 Jonathan Wakely <jwakely@redhat.com>
60 * include/debug/helper_functions.h (__get_distance): Only declare
61 as a constexpr function for C++14 and up.
62 * testsuite/25_algorithms/copy/debug/95289.cc: New test.
64 * include/bits/fs_path.h (__detail::_S_range_begin)
65 (__detail::_S_range_end, path::_S_string_from_iter): Replace with
66 overloaded function template __detail::__effective_range.
67 (__detail::__effective_range): New overloaded function template to
68 create a basic_string or basic_string_view for an effective range.
69 (__detail::__value_type_is_char): Use __detail::__effective_range.
70 Do not use remove_const on value type.
71 (__detail::__value_type_is_char_or_char8_t): Likewise.
72 (path::path(const Source&, format))
73 (path::path(const Source&, const locale&))
74 (path::operator/=(const Source&), path::append(const Source&))
75 (path::concat(const Source&)): Use __detail::__effective_range.
76 (path::_S_to_string(InputIterator, InputIterator)): New function
77 template to create a string view if possible, or string otherwise.
78 (path::_S_convert): Add overloads that convert a string returned
79 by __detail::__effective_range. Use if-constexpr to inline conversion
80 logic from all overloads of _Cvt::_S_convert.
81 (path::_S_convert_loc): Add overload that converts a string. Use
82 _S_to_string to avoid allocation when possible.
84 (path::operator+=(CharT)): Remove indirection through path::concat.
85 * include/experimental/bits/fs_path.h (path::_S_convert_loc): Add
86 overload for non-const pointers, to avoid constructing a std::string.
87 * src/c++17/fs_path.cc (path::_S_convert_loc): Replace conditional
88 compilation with call to _S_convert.
90 * include/bits/fs_path.h (__detail::_S_range_begin)
91 (__detail::_S_range_end): Remove unintentional static specifiers.
92 * include/experimental/bits/fs_path.h (__detail::_S_range_begin)
93 (__detail::_S_range_end): Likewise.
95 * include/bits/fs_path.h (filesystem::__detail::__is_encoded_char):
96 Replace alias template with variable template. Don't remove const.
97 (filesystem::__detail::__is_path_src): Replace overloaded function
98 template with variable template and specializations.
99 (filesystem::__detail::__is_path_iter_src): Replace alias template
101 (filesystem::__detail::_Path): Use __is_path_src. Remove support for
103 (filesystem::__detail::_Path2): New alias template for checking
104 InputIterator requirements.
105 (filesystem::__detail::__constructible_from): Remove.
106 (filesystem::path): Replace _Path<Iter, Iter> with _Path2<Iter>.
107 * testsuite/27_io/filesystem/path/construct/80762.cc: Check with two
108 constructor arguments of void and void* types.
110 2020-05-21 Matthias Kretz <kretz@kde.org>
112 * testsuite/Makefile.am: Remove dup target_triplet and set tool,
113 allowing runtest to work without arguments.
114 * testsuite/Makefile.in: Regenerate.
116 2020-05-21 Jonathan Wakely <jwakely@redhat.com>
119 * include/bits/iterator_concepts.h (__detail::__cpp17_iterator):
120 Reorder constraints to avoid recursion when constructors use
121 iterator_traits (LWG 3420).
122 * testsuite/24_iterators/customization_points/lwg3420.cc: New test.
124 * include/experimental/socket (basic_socket::is_open()
125 (basic_socket_acceptor::is_open()): Use _GLIBCXX_NODISCARD macro.
127 * include/experimental/bits/net.h (__endpoint, __protocol)
128 (__acceptable_protocol, __inet_protocol): New concepts.
129 (__detail::__is_endpoint): Move trait from <experimental/socket>.
130 (__is_protocol, __is_acceptable_protocol, __is_inet_protocol): New
132 (__endpoint, __protocol, __acceptable_protocol): New variable
134 * include/experimental/socket (__is_endpoint): Move to net.h header.
135 (basic_socket, basic_socket_acceptor): Check requirements.
137 * include/experimental/executor (use_future_t::use_future_t()): Fix
138 incorrect noexcept-specifier.
139 * include/experimental/internet (basic_resolver_results): Adjust
141 * include/experimental/socket (__basic_socket_impl::release): Add
143 (basic_socket(io_context&, const endpoint_type&)): Fix argument to
145 (basic_socket::release(), basic_socket::release(error_code&)): Add
146 missing member functions.
147 (basic_socket::is_open()): Add nodiscard attribute.
148 (basic_socket::close(error_code&)): Pass argument to base function.
149 (basic_socket_acceptor::release())
150 (basic_socket_acceptor::release(error_code&)): Add missing member
152 (basic_socket_acceptor::is_open()): Add nodiscard attribute.
153 (basic_socket_streambuf::error()): Add noexcept.
154 (basic_socket_iostream::error()): Likewise.
155 * testsuite/experimental/net/socket/basic_socket.cc: New test.
157 * include/experimental/buffer: Replace typedefs with
159 * include/experimental/executor: Likewise.
160 * include/experimental/internet: Likewise.
161 * include/experimental/socket: Likewise.
162 * include/experimental/timer: Likewise.
164 2020-05-19 Jonathan Wakely <jwakely@redhat.com>
167 * src/c++11/random.cc (__x86_rdseed): Allow fallback function to be
169 (__x86_rdseed_rdrand): New function that uses rdseed with rdrand
171 (random_device::_M_init): Use __x86_rdseed_rdrand when both
172 instructions are available.
173 * testsuite/26_numerics/random/random_device/94087.cc: New test.
175 2020-05-19 Patrick Palka <ppalka@redhat.com>
178 * testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value
180 * testsuite/20_util/tuple/element_access/get_neg.cc: Likewise.
182 2020-05-15 H.J. Lu <hongjiu.lu@intel.com>
185 * configure: Regenerated.
187 2020-05-14 H.J. Lu <hongjiu.lu@intel.com>
189 * configure: Regenerated.
191 2020-05-13 Alexandre Oliva <oliva@adacore.com>
194 * include/experimental/memory_resource
195 (__resource_adaptor_imp::do_allocate): Handle max_align_t on
196 x86-vxworks as on x86-solaris.
197 (__resource_adaptor_imp::do_deallocate): Likewise.
198 * testsuite/experimental/memory_resource/new_delete_resource.cc:
200 (BAD_MAX_ALIGN_T): Define on x86-vxworks as on x86-solaris.
201 (test03): Drop max-align test for char-aligned alloc.
203 2020-05-08 Ulrich Drepper <drepper@redhat.com>
205 * include/bits/atomic_base.h (atomic_flag): Implement test member
207 * include/std/version: Define __cpp_lib_atomic_flag_test.
208 * testsuite/29_atomics/atomic_flag/test/explicit.cc: New file.
209 * testsuite/29_atomics/atomic_flag/test/implicit.cc: New file.
211 2020-05-07 Jonathan Wakely <jwakely@redhat.com>
213 PR libstdc++/94971 (partial)
214 * include/bits/ranges_algo.h (ranges::__sample_fn): Qualify
215 std::sample using macro to work in parallel mode.
216 (__sort_fn): Likewise for std::sort.
217 (ranges::__nth_element_fn): Likewise for std::nth_element.
218 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
219 Likewise for std::__min_cmp.
220 * include/parallel/algobase.h (lexicographical_compare_three_way):
221 Add to namespace std::__parallel.
224 * include/parallel/multiway_merge.h (_GuardedIterator::operator*)
225 (_GuardedIterator::operator _RAIter, _UnguardedIterator::operator*)
226 (_UnguardedIterator::operator _RAIter): Add const qualifier.
227 (operator<(_GuardedIterator&, _GuardedIterator&)
228 (operator<=(_GuardedIterator&, _GuardedIterator&)
229 (operator<(_UnguardedIterator&, _UnguardedIterator&)
230 (operator<=(_UnguardedIterator&, _UnguardedIterator&): Change
231 parameters to const references.
233 2020-05-07 Eric Botcazou <ebotcazou@adacore.com>
235 * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Update.
236 * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
238 2020-05-06 François Dumont <fdumont@gcc.gnu.org>
240 * include/bits/stl_algobase.h (struct _Bit_iterator): New declaration.
241 (std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise.
242 * include/bits/stl_bvector.h (__fill_bvector): Move outside
243 _GLIBCXX_STD_C namespace.
244 (fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename
246 (__fill_a1): ...this.
247 * testsuite/25_algorithms/fill/bvector/1.cc: New.
249 2020-05-06 H.J. Lu <hongjiu.lu@intel.com>
251 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
253 2020-05-06 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
255 * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
256 * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
258 * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
259 * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
262 2020-05-06 Martin Liska <mliska@suse.cz>
265 2020-05-05 Martin Liska <mliska@suse.cz>
267 * include/parallel/multiway_merge.h:
268 Use const for _Compare template argument.
270 2020-05-06 Jonathan Wakely <jwakely@redhat.com>
272 * doc/xml/manual/abi.xml (abi.versioning.history): Document library
273 versions for GCC 9.[123] and 10.1 releases.
274 * doc/html/*: Regenerate.
276 2020-05-06 Jakub Jelinek <jakub@redhat.com>
278 * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
279 * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
280 * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
281 * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
282 * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
283 * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
284 * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
286 2020-05-05 Martin Liska <mliska@suse.cz>
289 * include/parallel/multiway_merge.h:
290 Use const for _Compare template argument.
292 2020-05-04 Fangrui Song <maskray@google.com>
294 * libsupc++/cxxabi.h (__cxa_finalize): Fix return type.
296 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
298 * doc/xml/faq.xml: Use working link for SGI STL FAQ.
299 * doc/html/*: Regenerate.
302 * src/c++17/memory_resource.cc
303 (monotonic_buffer_resource::_Chunk::release): Use size_t for shift
306 2020-05-04 Nathan Sidwell <nathan@acm.org>
309 * libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to
310 ptrdiff_t before negation, to show intent more clearly.
312 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
315 * src/c++17/memory_resource.cc (synchronized_pool_resource::_TPools):
316 Add comment about single-threaded behaviour.
317 (synchronized_pool_resource::_TPools::move_nonempty_chunks()): Hoist
318 class member access out of loop.
319 (synchronized_pool_resource::synchronized_pool_resource())
320 (synchronized_pool_resource::~synchronized_pool_resource())
321 (synchronized_pool_resource::release()): Check __gthread_active_p
322 before creating and/or deleting the thread-specific data key.
323 (synchronized_pool_resource::_M_thread_specific_pools()): Adjust
325 (synchronized_pool_resource::do_allocate(size_t, size_t)): Add fast
326 path for single-threaded case.
327 (synchronized_pool_resource::do_deallocate(void*, size_t, size_t)):
328 Likewise. Return if unable to find a pool that owns the allocation.
329 * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
331 * testsuite/20_util/synchronized_pool_resource/cons_single.cc: New
333 * testsuite/20_util/synchronized_pool_resource/release_single.cc: New
336 2020-05-03 Jonathan Wakely <jwakely@redhat.com>
339 * include/bits/stl_algobase.h (__fill_a1): Make overload for byte types
340 usable in constant expressions.
341 * testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and
344 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
347 * testsuite/17_intro/badnames.cc: Test values between _E9 and _E24 too.
349 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
350 Patrick Palka <ppalka@redhat.com>
353 * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove):
354 Add trait to determine return type and an alias for it.
355 (ranges::__cust_imove::_IMove::operator()): Use __result instead of
357 (iter_rvalue_reference_t): Use _IMove::__type instead of checking
358 the result of ranges::iter_move.
359 (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t
360 instead of checking the result of ranges::iter_move.
361 * testsuite/24_iterators/customization_points/92894.cc: New test.
362 * testsuite/24_iterators/indirect_callable/92894.cc: New test.
364 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
367 * include/std/type_traits (__is_complete_or_unbounded): Replace
369 * testsuite/17_intro/badnames.cc: New test.
371 2020-04-30 Jonathan Wakely <jwakely@redhat.com>
374 * include/bits/alloc_traits.h (allocator_traits::_S_construct)
375 (allocator_traits::_S_destroy)
376 (allocator_traits<allocator<T>>::construct): Use traits in
378 * include/bits/allocator.h (allocator<void>::construct)
379 (allocator<void>::destroy): Likewise.
380 * include/ext/malloc_allocator.h (malloc_allocator::construct)
381 (malloc_allocator::destroy): Likewise.
382 * include/ext/new_allocator.h (new_allocator::construct)
383 (new_allocator::destroy): Likewise.
384 * testsuite/20_util/allocator/89510.cc: New test.
385 * testsuite/ext/malloc_allocator/89510.cc: New test.
386 * testsuite/ext/new_allocator/89510.cc: New test.
388 2020-04-29 Jonathan Wakely <jwakely@redhat.com>
391 * include/bits/basic_string.tcc: Update comment about explicit
394 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
397 * include/bits/allocator.h (__cpp_lib_allocator_is_always_equal):
398 Remove non-standard macro.
399 * include/bits/stl_iterator.h (__cpp_lib_constexpr_iterator): Define
400 to indicate P1032R1 support.
401 * include/bits/stl_pair.h (__cpp_lib_constexpr_utility): Likewise.
402 * include/std/string_view (__cpp_lib_constexpr_string_view): Likewise.
403 * include/std/tuple (__cpp_lib_constexpr_tuple): Likewise.
404 * include/std/version (__cpp_lib_allocator_is_always_equal): Remove.
405 (__cpp_lib_constexpr_iterator, __cpp_lib_constexpr_string_view)
406 (__cpp_lib_constexpr_tuple, __cpp_lib_constexpr_utility): Define.
407 * testsuite/20_util/function_objects/constexpr_searcher.cc: Check
409 * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: Likewise.
410 * testsuite/21_strings/basic_string_view/operations/copy/char/
411 constexpr.cc: Likewise.
412 * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
415 * include/bits/alloc_traits.h (_S_construct): Restore placement
416 new-expression for C++11/14/17 and call std::construct_at directly
418 * include/bits/stl_construct.h (_Construct): Revert to non-constexpr
419 function returning void.
420 * testsuite/20_util/specialized_algorithms/
421 uninitialized_value_construct/94831.cc: New test.
422 * testsuite/23_containers/vector/cons/94831.cc: New test.
424 2020-04-28 Patrick Palka <ppalka@redhat.com>
426 LWG 3433 subrange::advance(n) has UB when n < 0
427 * include/std/ranges (subrange::prev): Fix typo.
428 (subrange::advance): Handle a negative argument as per the proposed
429 resolution of LWG 3433.
430 * testsuite/std/ranges/subrange/lwg3433.cc: New test.
432 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
433 Iain Sandoe <iain@sandoe.co.uk>
436 * include/std/coroutine: Implement handing for non-
437 class coroutine return types.
439 2020-04-24 Jonathan Wakely <jwakely@redhat.com>
441 * include/experimental/executor (service_already_exists): Make default
442 constructor public (LWG 3414).
443 * testsuite/experimental/net/execution_context/make_service.cc: Check
444 the service_already_exists can be default constructed.
446 2020-04-24 Kamlesh Kumar <kamleshbhalui@gmail.com>
447 Jonathan Wakely <jwakely@redhat.com>
451 * include/std/any (any): Rename template parameters for consistency
453 (any::_Decay): Rename to _Decay_if_not_any.
454 (any::any(T&&):: Remove is_constructible from constraints. Remove
455 non-standard overload.
456 (any::any(in_place_type_t<T>, Args&&...))
457 (any::any(in_place_type_t<T>, initializer_list<U>, Args&&...))
458 (any::emplace(Args&&...))
459 (any::emplace(initializer_list<U>, Args&&...)):
460 Use decay_t instead of _Decay.
461 * testsuite/20_util/any/cons/90415.cc: New test.
462 * testsuite/20_util/any/cons/92156.cc: New Test.
463 * testsuite/20_util/any/misc/any_cast_neg.cc: Make dg-error directives
465 * testsuite/20_util/any/modifiers/92156.cc: New test.
467 2020-04-23 Jonathan Wakely <jwakely@redhat.com>
469 * doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
470 * doc/html/*: Regenerate.
472 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Revert
473 value for C++17 to 201803L because P0858R0 is supported for C++17.
474 * include/std/version (__cpp_lib_array_constexpr): Likewise.
475 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
476 Check for value corresponding to P0031R0 features being tested.
477 * testsuite/23_containers/array/requirements/constexpr_iter.cc:
478 Check for value corresponding to P0858R0 features being tested.
480 * include/std/version (__cpp_lib_three_way_comparison): Define for
483 2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
485 * include/experimental/net/executor (system_context): Mark
486 system_context::system_context() = delete.
487 * testsuite/experimental/net/executor/1.cc: Add new
488 test to check system_context is not default constructible.
490 2020-04-23 Iain Sandoe <iain@sandoe.co.uk>
492 * include/std/coroutine: Update the inline namespace to __n4861.
493 Add the __cpp_lib_coroutine define, set to 201902L.
494 * include/std/version: Add __cpp_lib_coroutine, set to 201902L.
496 2020-04-22 Jonathan Wakely <jwakely@redhat.com>
498 * include/std/execution (__cpp_lib_execution): Define to indicate
499 support for P0024R2 and P1001R2.
500 * include/std/version (__cpp_lib_execution): Define.
501 * testsuite/25_algorithms/pstl/feature_test.cc: Only test macro
502 defined by <algorithm>, move other tests to new tests ...
503 * testsuite/25_algorithms/pstl/feature_test-2.cc: New test.
504 * testsuite/25_algorithms/pstl/feature_test-3.cc: New test.
505 * testsuite/25_algorithms/pstl/feature_test-4.cc: New test.
506 * testsuite/25_algorithms/pstl/feature_test-5.cc: New test.
508 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define
509 different values for C++17 and C++20, to indicate different feature
510 sets. Update value for C++20 to indicate P1032R1 support.
511 * include/std/version (__cpp_lib_array_constexpr): Likewise.
512 * testsuite/23_containers/array/comparison_operators/constexpr.cc:
513 Check feature test macro.
514 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
516 * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check
518 * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test
519 in C++17 mode and check feature test macro.
521 * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define
523 * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be
524 defined by <utility>.
526 * include/std/functional (__cpp_lib_concepts): Update macro value to
527 indicate P1964R2 support.
528 * include/std/version (__cpp_lib_concepts): Likewise.
529 * testsuite/std/concepts/1.cc: Adjust expected value.
530 * testsuite/std/concepts/2.cc: Likewise.
532 * include/std/functional (__cpp_lib_constexpr_invoke): Rename to
533 __cpp_lib_constexpr_functional.
534 * include/std/version (__cpp_lib_constexpr_invoke): Likewise.
535 * testsuite/20_util/function_objects/invoke/constexpr.cc: Adjust.
537 * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to
538 indicate P1006R1 support.
539 (__cpp_lib_to_address): Define to indicate P0653R2 support.
540 * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate
542 * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate
544 * include/std/atomic (__cpp_lib_atomic_float): Define to indicate
546 * include/std/memory (__cpp_lib_assume_aligned): Define to indicate
548 * include/std/memory_resource (__cpp_lib_polymorphic_allocator):
549 Define to indicate P0339R6 support.
550 * include/std/string_view (__cpp_lib_starts_ends_with): Define to
551 indicate P0457R2 support.
552 * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define
553 to indicate P0758R1 support.
554 (__cpp_lib_remove_cvref): Define to indicate P0550R2 support.
555 (__cpp_lib_type_identity): Define to indicate P0887R1 support.
556 * include/std/version (__cpp_lib_atomic_float)
557 (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref)
558 (__cpp_lib_type_identity, __cpp_lib_assume_aligned)
559 (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator)
560 (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with)
561 (__cpp_lib_to_address): Define.
562 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
564 * include/bits/stl_map.h (__cpp_lib_map_insertion): Remove old
566 * include/bits/unordered_map.h (__cpp_lib_unordered_map_insertion):
568 * include/std/version (__cpp_lib_map_insertion)
569 (__cpp_lib_unordered_map_insertion): Remove.
571 * include/std/condition_variable (__cpp_lib_jthread): Remove
572 redundant definition.
573 * include/std/stop_token (__cpp_lib_jthread): Update macro value to
574 indicate P1869R1 support.
575 * include/std/version (__cpp_lib_jthread): Update value.
576 * testsuite/30_threads/condition_variable_any/stop_token/1.cc: Check
577 for updated macro value.
578 * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
580 * testsuite/30_threads/jthread/1.cc: Likewise.
581 * testsuite/30_threads/jthread/2.cc: Likewise.
582 * testsuite/30_threads/stop_token/1.cc: Likewise.
583 * testsuite/30_threads/stop_token/2.cc: Likewise.
585 * testsuite/21_strings/basic_string/erasure.cc: Check for
586 __cpp_lib_erase_if macro.
587 * testsuite/23_containers/deque/erasure.cc: Add header name to #error
589 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
590 * testsuite/23_containers/list/erasure.cc: Likewise.
591 * testsuite/23_containers/map/erasure.cc: Likewise.
592 * testsuite/23_containers/set/erasure.cc: Likewise.
593 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
594 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
595 * testsuite/23_containers/vector/erasure.cc: Likewise.
597 2020-04-21 Jonathan Wakely <jwakely@redhat.com>
599 * include/bits/stl_iterator.h (__normal_iterator): Use synth-three-way
600 to define operator<=>.
601 * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: New test.
603 * doc/Makefile.am (xml_sources_manual): Add missing XML files.
604 * doc/Makefile.in: Regenerate.
605 * doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead
607 * doc/xml/manual/status_cxx2011.xml: Formatting and other corrections
608 to the C++11 status table.
609 * doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature
610 proposals with table matching contents of the C++14 standard.
611 * doc/xml/manual/status_cxx2017.xml: Add table matching contents of
613 * doc/html/*: Regenerate.
616 * include/std/type_traits (__is_nt_constructible_impl): Add partial
617 specializations for bounded arrays with non-empty initializers.
618 * testsuite/20_util/is_nothrow_constructible/value_c++20.cc: New test.
620 2020-04-20 Thomas Rodgers <trodgers@redhat.com>
622 * testsuite/lib/libstdc++.exp: Add additional_flags=
623 -DTBB_SUPRESS_DEPRECATED_MESSAGES=1 to suppress warnings when
624 compiling with a newer Thread Building Blocks.
626 2020-04-20 Jonathan Wakely <jwakely@redhat.com>
628 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
630 * testsuite/20_util/is_constructible/51185.cc: Make test class a
631 non-aggregate so that the test verifies the same thing in all -std
633 * testsuite/20_util/is_constructible/value-2.cc: Adjust expected
634 results for some types when paren-init for aggregates is supported.
636 * include/std/version (__cpp_lib_three_way_comparison): Update value.
637 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
638 (__detail::__synth3way): Add noexcept-specifier.
640 * include/bits/stl_map.h (map): Define operator<=> and remove
642 * include/bits/stl_multimap.h (multimap): Likewise.
643 * include/bits/stl_multiset.h (multiset): Likewise.
644 * include/bits/stl_set.h (set): Likewise.
645 * include/bits/stl_tree.h (_Rb_tree): Likewise.
646 (_Rb_tree_iterator, _Rb_tree_const_iterator): Remove redundant
647 operator!= for C++20.
648 * include/debug/map.h (__gnu_debug::map): Define operator<=> for C++20.
649 * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
650 * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
651 * include/debug/set.h (__gnu_debug::set): Likewise.
652 * testsuite/23_containers/map/operators/cmp_c++20.cc: New test.
653 * testsuite/23_containers/multimap/operators/cmp_c++20.cc: New test.
654 * testsuite/23_containers/multiset/operators/cmp_c++20.cc: New test.
655 * testsuite/23_containers/set/operators/cmp_c++20.cc: New test.
657 2020-04-20 Matthias Kretz <kretz@kde.org>
659 * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose.
661 2020-04-19 Jonathan Wakely <jwakely@redhat.com>
663 * include/bits/stl_queue.h (queue): Define operator<=> for C++20.
664 * include/bits/stl_stack.h (stack): Likewise.
665 * testsuite/23_containers/queue/cmp_c++20.cc: New test.
666 * testsuite/23_containers/stack/cmp_c++20.cc: New test.
668 * include/bits/unordered_map.h (unordered_map, unordered_multimap):
669 Remove redundant operator!= for C++20.
670 * include/bits/unordered_set.h (unordered_set, unordered_multiset):
672 * include/debug/unordered_map (unordered_map, unordered_multimap):
674 * include/debug/unordered_set (unordered_set, unordered_multiset):
678 * include/debug/formatter.h (_Error_formatter::_Parameter): Fix
679 redundant assignment in constructor.
681 2020-04-18 Jonathan Wakely <jwakely@redhat.com>
683 * include/std/chrono (duration, time_point): Define operator<=> and
684 remove redundant operator!= for C++20.
685 * testsuite/20_util/duration/comparison_operators/three_way.cc: New
687 * testsuite/20_util/time_point/comparison_operators/three_way.cc: New
690 * testsuite/util/native_type/native_priority_queue.hpp: Use
691 allocator_traits to rebind allocator.
693 2020-04-17 Jonathan Wakely <jwakely@redhat.com>
695 * include/bits/forward_list.h (forward_list): Define operator<=> and
696 remove redundant comparison operators for C++20.
697 * include/bits/stl_bvector.h (vector<bool, Alloc>): Likewise.
698 * include/bits/stl_deque.h (deque): Likewise.
699 * include/bits/stl_iterator.h (__normal_iterator): Likewise.
700 * include/bits/stl_list.h (list): Likewise.
701 * include/bits/stl_vector.h (vector): Likewise.
702 * include/debug/deque (__gnu_debug::deque): Likewise.
703 * include/debug/forward_list (__gnu_debug::forward_list): Likewise.
704 * include/debug/list (__gnu_debug::list): Likewise.
705 * include/debug/safe_iterator.h (__gnu_debug::_Safe_iterator):
707 * include/debug/vector (__gnu_debug::vector): Likewise.
708 * include/ext/pointer.h (__gnu_cxx::_Pointer_adapter): Define
709 operator<=> for C++20.
710 * testsuite/23_containers/deque/operators/cmp_c++20.cc: New test.
711 * testsuite/23_containers/forward_list/cmp_c++20.cc: New test.
712 * testsuite/23_containers/list/cmp_c++20.cc: New test.
713 * testsuite/23_containers/vector/bool/cmp_c++20.cc: New test.
714 * testsuite/23_containers/vector/cmp_c++20.cc: New test.
716 * include/bits/basic_string.h (basic_string): Define operator<=> and
717 remove redundant comparison operators for C++20.
718 * include/bits/char_traits.h (__gnu_cxx::char_traits, char_traits):
719 Add comparison_category members.
720 (__detail::__char_traits_cmp_cat): New helper to get comparison
721 category from char traits class.
722 * include/bits/regex.h (regex_traits::_RegexMask::operator!=): Do not
724 (sub_match): Define operator<=> and remove redundant comparison
726 (match_results): Remove redundant operator!= for C++20.
727 * include/std/string_view (basic_string_view): Define operator<=> and
728 remove redundant comparison operators for C++20.
729 * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc: New
731 * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc:
733 * testsuite/21_strings/basic_string_view/operations/copy/char/
734 constexpr.cc: Initialize variable.
735 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
736 constexpr.cc: Likewise.
737 * testsuite/21_strings/basic_string_view/operators/char/2.cc: Add
738 dg-do directive and remove comments showing incorrect signatures.
739 * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
741 * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc:
743 * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc:
745 * testsuite/28_regex/sub_match/compare_c++20.cc: New test.
747 2020-04-16 Jonathan Wakely <jwakely@redhat.com>
749 * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Remove
750 name of unused parameter.
752 2020-04-15 Jonathan Wakely <jwakely@redhat.com>
754 * include/bits/fs_dir.h (file_status): Define operator== for C++20.
755 (directory_entry): Define operator<=> and remove redundant comparison
757 * include/bits/fs_fwd.h (space_info): Define operator== for C++20.
758 * include/bits/fs_path.h (path): Define operator<=> and remove
759 redundant comparison operators for C++20.
760 * testsuite/27_io/filesystem/path/compare/compare.cc: Fix comment.
761 * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
762 * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
763 * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
765 * include/bits/allocator.h (operator!=): Do not define for C++20.
766 * include/bits/locale_classes.h (operator!=): Likewise.
767 * include/bits/std_function.h (operator==(nullptr_t, const function&))
768 (operator!=(const function&, nullptr_t))
769 (operator!=(nullptr_t, const function&)): Likewise.
770 * include/ext/bitmap_allocator.h (operator!=): Likewise.
771 * include/ext/debug_allocator.h (operator!=): Likewise.
772 * include/ext/extptr_allocator.h (operator!=): Likewise.
773 * include/ext/malloc_allocator.h (operator!=): Likewise.
774 * include/ext/mt_allocator.h (operator!=): Likewise.
775 * include/ext/new_allocator.h (operator!=): Likewise.
776 * include/ext/pool_allocator.h (operator!=): Likewise.
777 * include/ext/throw_allocator.h (operator!=): Likewise.
778 * include/std/bitset (bitset::operator!=): Likewise.
779 * include/std/memory_resource (operator!=): Likewise.
780 * include/std/scoped_allocator (operator!=): Likewise.
782 * include/std/typeindex (operator<=>): Define for C++20.
783 * testsuite/20_util/typeindex/comparison_operators_c++20.cc: New test.
785 2020-04-14 Jonathan Wakely <jwakely@redhat.com>
787 * libsupc++/compare (compare_three_way): Fix constraint so that
788 BUILTIN-PTR-THREE-WAY does not require three_way_comparable_with.
789 * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc:
793 * include/bits/shared_ptr.h (operator<=>): Define for C++20.
794 * include/bits/shared_ptr_base.h (operator<=>): Likewise.
795 * include/bits/unique_ptr.h (operator<=>): Add inline specifier.
796 * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc: New test.
797 * testsuite/20_util/shared_ptr/comparison/less.cc: Do not expect
798 std::less<A*> to be used when comparing std::shared_ptr<A> objects in
802 * libsupc++/compare (__unspec): Add noexcept-specifier to constructor.
803 * testsuite/18_support/comparisons/categories/94565.cc: New test.
805 2020-04-13 Iain Sandoe <iain@sandoe.co.uk>
807 * include/std/coroutine: Update coroutines builtin define,
810 2020-04-09 Jonathan Wakely <jwakely@redhat.com>
812 * libsupc++/compare (compare_three_way): Fix noexcept-specifier.
813 (strong_order, weak_order, partial_order): Replace uses of <=> with
814 compare_three_way function object (LWG 3324).
815 * testsuite/18_support/comparisons/algorithms/partial_order.cc: Add
816 equality operator so that X satisfies three_way_comparable.
817 * testsuite/18_support/comparisons/algorithms/strong_order.cc:
819 * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise.
821 * include/bits/unique_ptr.h (operator<=>): Define for C++20.
822 * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
823 * testsuite/20_util/default_delete/void_neg.cc: Likewise.
824 * testsuite/20_util/unique_ptr/comparison/compare.cc: New test.
825 * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc: New test.
827 2020-04-08 Jonathan Wakely <jwakely@redhat.com>
829 * include/bits/slice_array.h (operator==(const slice&, const slice&)):
831 * include/std/complex (operator==(const T&, const complex<T>&))
832 (operator!=(const complex<T>&, const complex<T>&))
833 (operator!=(const complex<T>&, const T&))
834 (operator!=(const T&, const complex<T>&)): Do not declare for C++20.
835 * testsuite/26_numerics/slice/compare.cc: New test.
837 * include/std/charconv (to_chars_result, from_chars_result): Add
838 defaulted equality comparisons for C++20.
839 * testsuite/20_util/from_chars/compare.cc: New test.
840 * testsuite/20_util/to_chars/compare.cc: New test.
842 2020-04-07 Jonathan Wakely <jwakely@redhat.com>
845 * include/std/charconv (__integer_to_chars_result_type)
846 (__integer_from_chars_result_type): Use __or_ instead of __or_v_ to
848 * testsuite/20_util/from_chars/1.cc: Run test as C++14 and replace
849 use of std::string_view with std::string.
850 * testsuite/20_util/from_chars/2.cc: Likewise.
851 * testsuite/20_util/to_chars/1.cc: Likewise.
852 * testsuite/20_util/to_chars/2.cc: Likewise.
854 2020-04-06 Jonathan Wakely <jwakely@redhat.com>
857 * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Make it
858 usable in constant expressions for C++20.
859 (__gnu_cxx::char_traits::copy, __gnu_cxx::char_traits::assign): Add
860 _GLIBCXX20_CONSTEXPR.
861 (std::char_traits<char>, std::char_traits<wchar_t>)
862 (std::char_traits<char8_t>): Make move, copy and assign usable in
863 constant expressions for C++20.
864 (std::char_traits<char16_t>, std::char_traits<char32_t>): Make move
865 and copy usable in constant expressions for C++20.
866 * include/std/string_view (basic_string_view::copy): Add
867 _GLIBCXX20_CONSTEXPR.
868 * testsuite/21_strings/basic_string_view/operations/copy/char/
869 constexpr.cc: New test.
870 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
871 constexpr.cc: New test.
873 2020-04-05 Gerald Pfeifer <gerald@pfeifer.com>
875 * doc/xml/manual/appendix_contributing.xml: Refer to Git
876 documentation instead of Subversion. Switch to https.
877 * doc/html/manual/appendix_contributing.html: Regenerate.
879 2020-04-03 Jonathan Wakely <jwakely@redhat.com>
882 * include/bits/ptr_traits.h (__to_address): Add special case for debug
883 iterators, to avoid dereferenceable check.
884 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
885 * testsuite/20_util/to_address/debug.cc: New test.
887 2020-04-01 Andrea Corallo <andrea.corallo@arm.com>
889 * testsuite/experimental/net/execution_context/use_service.cc:
890 Require pthread and gthreads.
892 2020-04-01 Gerald Pfeifer <gerald@pfeifer.com>
894 * doc/xml/manual/appendix_free.xml: Move "free books" list from
896 * doc/html/manual/appendix_free.html: Regenerate.
898 2020-03-31 Ville Voutilainen <ville.voutilainen@gmail.com>
900 Library-side tests for parenthesized aggregate init
905 * testsuite/20_util/allocator_traits/members/92878_92947.cc: New.
906 * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
907 * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
908 * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
909 * testsuite/20_util/optional/assignment/92878_92947.cc: Likewise.
910 * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
911 * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
912 * testsuite/20_util/shared_ptr/creation/92878_92947.cc: Likewise.
913 * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
915 * testsuite/20_util/unique_ptr/creation/92878_92947.cc: Likewise.
916 * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
917 * testsuite/20_util/variant/92878_92947.cc: Likewise.
918 * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
920 * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
922 * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
924 * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
926 * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
928 * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
930 * testsuite/23_containers/priority_queue/92878_92947.cc: Likewise.
931 * testsuite/23_containers/queue/92878_92947.cc: Likewise.
932 * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
934 * testsuite/23_containers/stack/92878_92947.cc: Likewise.
935 * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
937 * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
939 * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
941 * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
943 * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
946 2020-03-28 Jonathan Wakely <jwakely@redhat.com>
948 * testsuite/20_util/is_constructible/value-2.cc: Fix test to account
949 for changes due to parenthesized aggregate-initialization in C++20.
950 * testsuite/20_util/time_point/cons/81468.cc: Fix test to not clash
951 with std::chrono::sys_time in C++20.
953 * include/bits/stl_iterator.h (reverse_iterator): Use requires-clause
954 to constrain C++20 versions of comparison operators. Fix backwards
955 logic of relational operators.
956 (move_iterator): Use requires-clause to constrain comparison operators
957 in C++20. Do not declare non-standard same-type overloads for C++20.
958 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Check result
959 of comparisons and check using greedy_ops type.
960 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Likewise.
961 * testsuite/24_iterators/move_iterator/greedy_ops.cc: Remove redundant
962 main function from compile-only test.
963 * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise.
965 2020-03-27 Jonathan Wakely <jwakely@redhat.com>
967 * include/bits/range_cmp.h (__cpp_lib_ranges): Define.
968 * include/bits/stl_iterator.h: Check value of __cpp_concepts so that
969 C++20 concepts are required.
970 * include/bits/stl_iterator_base_types.h: Likewise.
971 * include/std/concepts: Likewise.
972 * include/std/version: Likewise.
973 * testsuite/std/ranges/headers/ranges/synopsis.cc: Check feature test
976 * include/bits/stl_iterator.h (reverse_iterator::iterator_concept)
977 (reverse_iterator::iterator_category): Define for C++20.
978 (reverse_iterator): Define comparison operators correctly for C++20.
979 (__normal_iterator): Add constraints to comparison operators for C++20.
980 (move_iterator::operator++(int)) [__cpp_lib_concepts]: Define new
981 overload for input iterators.
982 (move_iterator): Add constraints to comparison operators for C++20.
983 Define operator<=> for C++20.
984 * testsuite/24_iterators/move_iterator/input_iterator.cc: New test.
985 * testsuite/24_iterators/move_iterator/move_only.cc: New test.
986 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: New test.
987 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: New test.
989 * include/bits/iterator_concepts.h (__detail::__decay_copy)
990 (__detail::__member_begin, __detail::__adl_begin): Move here from
991 <bits/range_access.h>.
992 (__detail::__ranges_begin, __detail::__range_iter_t): Define.
993 * bits/range_access.h (__cust_access::__decay_copy)
994 (__cust_access::__member_begin, __cust_access::__adl_begin): Move to
995 <bits/iterator_concepts.h>.
996 (ranges::iterator_t): Use __detail::__range_iter_t.
997 * include/bits/stl_iterator.h (back_insert_iterator): Simplify
998 conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members.
999 (front_insert_iterator): Likewise.
1000 (insert_iterator): Implement changes from P0896R4 for C++20.
1001 * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test.
1002 * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test.
1003 * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust
1004 for inclusion in synopsis_c++20.cc which expects different signatures
1005 for some function templates.
1006 * testsuite/24_iterators/insert_iterator/constexpr.cc: New test.
1008 * include/std/type_traits (__is_array_convertible): Move definition
1009 to immediately after is_convertible.
1011 2020-03-26 Jonathan Wakely <jwakely@redhat.com>
1013 * include/std/chrono (chrono::days, chrono::weeks, chrono::years)
1014 (chrono::months, chrono::sys_days, chrono::local_t)
1015 (chrono::local_time, chrono::local_seconds, chrono::local_days):
1017 (chrono::time_point): Add missing static assert.
1018 * testsuite/20_util/time_point/requirements/duration_neg.cc: New test.
1019 * testsuite/std/time/clock/file/overview.cc: New test.
1020 * testsuite/std/time/clock/file/members.cc: New test.
1021 * testsuite/std/time/syn_c++20.cc: New test.
1023 2020-03-25 Mike Crowe <mac@mcrowe.com>
1025 * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
1027 * testsuite/30_threads/shared_timed_mutex/try_lock_until/2.cc: New
1030 2020-03-25 Jonathan Wakely <jwakely@redhat.com>
1032 * include/bits/fs_fwd.h (filesystem::__file_clock): Move to ...
1033 * include/std/chrono (filesystem::__file_clock): Here.
1034 (filesystem::__file_clock::from_sys, filesystem::__file_clock::to_sys):
1035 Define public member functions for C++20.
1036 (is_clock, is_clock_v): Define traits for C++20.
1037 * include/std/condition_variable (condition_variable::wait_until): Add
1038 check for valid clock.
1039 * include/std/future (_State_baseV2::wait_until): Likewise.
1040 * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Likewise.
1041 * include/std/shared_mutex (shared_timed_mutex::try_lock_shared_until):
1043 * include/std/thread (this_thread::sleep_until): Likewise.
1044 * testsuite/30_threads/condition_variable/members/2.cc: Qualify
1045 slow_clock with new namespace.
1046 * testsuite/30_threads/condition_variable/members/clock_neg.cc: New
1048 * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
1050 * testsuite/30_threads/future/members/clock_neg.cc: New test.
1051 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
1052 Qualify slow_clock with new namespace.
1053 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/
1054 clock_neg.cc: New test.
1055 * testsuite/30_threads/shared_future/members/clock_neg.cc: New
1057 * testsuite/30_threads/shared_lock/locking/clock_neg.cc: New test.
1058 * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
1060 * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Qualify
1061 slow_clock with new namespace.
1062 * testsuite/30_threads/timed_mutex/try_lock_until/4.cc: Likewise.
1063 * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc: New
1065 * testsuite/30_threads/unique_lock/locking/clock_neg.cc: New test.
1066 * testsuite/std/time/traits/is_clock.cc: New test.
1067 * testsuite/util/slow_clock.h (slow_clock): Move to __gnu_test
1070 2020-03-21 Jonathan Wakely <jwakely@redhat.com>
1073 * include/experimental/bits/fs_path.h (path::generic_string<C,T,A>()):
1074 * testsuite/experimental/filesystem/path/generic/generic_string.cc:
1075 Improve test coverage.
1078 * include/bits/fs_path.h (path::_S_str_convert): Replace first
1079 parameter with basic_string_view so that strings with different
1080 allocators can be accepted.
1081 (path::generic_string<C,T,A>()): Use basic_string object that uses the
1082 right allocator type.
1083 * testsuite/27_io/filesystem/path/generic/94242.cc: New test.
1084 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Improve
1087 2020-03-18 Jonathan Wakely <jwakely@redhat.com>
1090 * include/std/type_traits (__is_nt_default_constructible_atom): Remove.
1091 (__is_nt_default_constructible_impl): Remove.
1092 (__is_nothrow_default_constructible_impl): Remove.
1093 (__is_nt_constructible_impl): Add bool template parameter. Adjust
1094 partial specializations.
1095 (__is_nothrow_constructible_impl): Replace class template with alias
1097 (is_nothrow_default_constructible): Derive from alias template
1098 __is_nothrow_constructible_impl instead of
1099 __is_nothrow_default_constructible_impl.
1100 * testsuite/20_util/is_nothrow_constructible/94003.cc: New test.
1102 * include/std/stop_token (stop_token::_Stop_state_ref): Define
1103 comparison operators explicitly if the compiler won't synthesize them.
1105 * include/bits/stl_algobase.h (__lexicographical_compare_aux): Check
1106 __cpp_lib_concepts before using iter_reference_t.
1107 * include/bits/stream_iterator.h (istream_iterator): Check
1108 __cpp_lib_concepts before using default_sentinel_t.
1109 * include/bits/streambuf_iterator.h (istreambuf_iterator): Likewise.
1112 * include/experimental/executor (executor::executor(Executor)): Call
1113 make_shared directly instead of _M_create. Create _Tgt1 object.
1114 (executor::executor(allocator_arg_t, const ProtoAlloc&, Executor)):
1115 Call allocate_shared directly instead of _M_create. Create _Tgt2
1117 (executor::target_type): Add cast needed for new _Tgt interface.
1118 (executor::target): Define when RTTI is disabled. Use _Tgt::_M_func.
1119 (executor::_Tgt): Define the same interface whether RTTI is enabled or
1121 (executor::_Tgt::target_type, executor::_Tgt::target): Do not use
1122 std::type_info in the interface.
1123 (executor::_Tgt::_M_func): Add data member.
1124 (executor::_TgtImpl): Replace with _Tgt1 and _Tgt2 class templates.
1125 (executor::_Tgt1::_S_func): Define function to access target without
1127 (executor::_M_create): Remove.
1128 (operator==, operator!=): Simplify comparisons for executor.
1129 * include/experimental/socket (is_error_code_enum<socket_errc>):
1130 Define specialization before use.
1131 * testsuite/experimental/net/executor/1.cc: New test.
1133 2020-03-16 Jonathan Wakely <jwakely@redhat.com>
1136 * include/experimental/executor (service_already_exists): Add default
1137 constructor. Declare make_service to be a friend.
1138 * testsuite/experimental/net/execution_context/make_service.cc: New
1141 2020-03-12 Jonathan Wakely <jwakely@redhat.com>
1143 * testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Do not pass
1144 a null pointer to functions with nonnull(1) attribute.
1146 2020-03-11 Patrick Palka <ppalka@redhat.com>
1148 * include/std/ranges (split_view::_OuterIter::_OuterIter): Typo fix,
1149 'address' -> 'std::__addressof'.
1150 * testsuite/std/ranges/adaptors/split.cc: Test taking the split_view of
1151 a non-forward input_range.
1152 * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Make
1153 default constructor protected instead of deleted, like with
1154 input_iterator_wrapper.
1155 (test_range::iterator): Add comment explaining that this type is used
1156 only when the underlying wrapper is input_iterator_wrapper or
1157 output_iterator_wrapper. Remove delegating defaulted constructor so
1158 that the inherited default constructor is used instead.
1160 LWG 3286 ranges::size is not required to be valid after a call to
1161 ranges::begin on an input range
1162 * include/std/ranges (subrange::subrange): Split single-argument
1163 constructor into two, one constrained by _S_store_size and another by
1165 (take_view::begin): Call size() before calling ranges::begin(_M_base).
1166 * testsuite/std/ranges/adaptors/lwg3286.cc: New test.
1167 * testsuite/std/ranges/subrange/lwg3286.cc: New test.
1169 2020-03-10 Jonathan Wakely <jwakely@redhat.com>
1171 * include/std/ranges (split_view::_OuterIter::__at_end): Use __current
1172 instead of _M_current.
1173 (split_view::_OuterIter::operator++): Likewise.
1175 * include/std/ranges (transform_view::_Iterator::__iter_move): Remove.
1176 (transform_view::_Iterator::operator*): Add noexcept-specifier.
1177 (transform_view::_Iterator::iter_move): Inline __iter_move body here.
1178 (split_view::_OuterIter::__current): Add noexcept.
1179 (split_view::_InnerIter::__iter_swap): Remove.
1180 (split_view::_InnerIter::__iter_move): Remove.
1181 (split_view::_InnerIter::_M_i_current): New accessors.
1182 (split_view::_InnerIter::__at_end): Use _M_i_current().
1183 (split_view::_InnerIter::operator*): Likewise.
1184 (split_view::_InnerIter::operator++): Likewise.
1185 (iter_move(const _InnerIter&)): Likewise.
1186 (iter_swap(const _InnerIter&, const _InnerIter&)): Likewise.
1187 * testsuite/std/ranges/adaptors/split.cc: Check noexcept-specifier
1188 for iter_move and iter_swap on split_view's inner iterator.
1191 * include/std/ranges (ranges::transform_view::_Iterator::iter_move):
1192 Change expression in noexcept-specifier to match function body.
1194 * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Add
1195 comment explaining multiple dg-do directives.
1196 * testsuite/24_iterators/ostream_iterator/1.cc: Fix do-do directive
1197 so test is run as well as compiled.
1199 2020-03-09 Jonathan Wakely <jwakely@redhat.com>
1202 * src/c++17/fs_path.cc (path::operator+=(const path&)): Add kluge to
1203 handle concatenations that change the type of the first component.
1204 (path::operator+=(basic_string_view<value_type>)): Likewise.
1205 * testsuite/27_io/filesystem/path/concat/94063.cc: New test.
1207 2020-03-06 Patrick Palka <ppalka@redhat.com>
1209 * include/std/ranges (join_view::_Sentinel<_Const>): Befriend
1210 join_view::_Sentinel<!_Const>.
1211 * testsuite/std/ranges/adaptors/join.cc: Augment test.
1214 * include/bits/range_access.h (__cust_access::_Empty::operator()):
1215 Declare return type to be bool instead of auto.
1216 * testsuite/std/ranges/adaptors/93978.cc: New test.
1218 2020-03-06 Jonathan Wakely <jwakely@redhat.com>
1221 * include/std/shared_mutex [!PTHREAD_RWLOCK_INITIALIZER]
1222 (__shared_mutex_pthread::__shared_mutex_pthread()): Remove incorrect
1223 second argument to __glibcxx_rwlock_init.
1224 * testsuite/30_threads/shared_timed_mutex/94069.cc: New test.
1227 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Adjust
1228 test to not fail due to PR 94063.
1229 * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
1230 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
1232 2020-03-06 Andreas Krebbel <krebbel@linux.ibm.com>
1234 * src/c++11/system_error.cc: Omit the ENOTSUP case statement if it
1237 2020-03-05 Jonathan Wakely <jwakely@redhat.com>
1239 * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
1240 * testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
1241 * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
1242 * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
1243 for return value, and in comparison.
1244 * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
1247 * include/std/string_view: Include <bits/ostream_insert.h>.
1248 * testsuite/21_strings/basic_string_view/inserters/94051.cc: New test.
1250 2020-03-04 Jonathan Wakely <jwakely@redhat.com>
1252 * include/bits/cpp_type_traits.h (__memcpyable): Fix comment.
1254 2020-03-04 Patrick Palka <ppalka@redhat.com>
1257 * include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine
1258 condition for when to use memset, making sure to additionally check that
1259 the output pointer's value type is a non-volatile byte type. Instead of
1260 requiring that the fill type is a byte type, just require that it's an
1262 * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
1264 * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
1266 * testsuite/25_algorithms/fill/94013.cc: Uncomment part of test that was
1267 blocked by PR 94017.
1268 * testsuite/25_algorithms/fill/94017.cc: New test.
1269 * testsuite/25_algorithms/fill_n/94017.cc: New test.
1271 LWG 3355 The memory algorithms should support move-only input iterators
1273 * include/bits/ranges_uninitialized.h
1274 (__uninitialized_copy_fn::operator()): Use std::move to avoid attempting
1275 to copy __ifirst, which could be a move-only input iterator. Use
1276 operator- instead of ranges::distance to compute distance from a sized
1278 (__uninitialized_copy_n_fn::operator()): Likewise.
1279 (__uninitialized_move_fn::operator()): Likewise.
1280 (__uninitialized_move_n_fn::operator()): Likewise.
1281 (__uninitialized_destroy_fn::operator()): Use std::move to avoid
1282 attempting to copy __first.
1283 (__uninitialized_destroy_n_fn::operator()): Likewise.
1284 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1286 * .../specialized_algorithms/uninitialized_copy/constrained.cc:
1288 * .../specialized_algorithms/uninitialized_move/constrained.cc:
1291 * testsuite/util/testsuite_iterators.h (test_range::get_iterator): Make
1292 protected instead of private.
1293 (test_sized_range_sized_sent): New.
1295 * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy):
1296 New testsuite iterator.
1297 * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it.
1298 * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
1300 * include/bits/ranges_uninitialized.h
1301 (uninitialized_copy_fn::operator()): Pass a reference type as the first
1302 argument to is_nothrow_assignable_v.
1303 (uninitialized_copy_fn::operator()): Likewise.
1304 (uninitialized_move_fn::operator()): Likewise. Return an in_out_result
1305 with the input iterator stripped of its move_iterator.
1306 (uninitialized_move_n_fn::operator()): Likewise.
1307 (uninitialized_fill_fn::operator()): Pass a reference type as the first
1308 argument to is_nothrow_assignable_v.
1309 (uninitialized_fill_n_fn::operator()): Likewise.
1311 2020-03-03 Jonathan Wakely <jwakely@redhat.com>
1314 * include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New
1315 traits to control when to use memmove and memcmp optimizations.
1316 (__is_nonvolatile_trivially_copyable): New helper trait.
1317 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not
1318 use memcmp optimization with volatile data.
1319 * include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable.
1320 (__copy_or_move, __copy_or_move_backward): Use __memcpyable.
1321 * include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable.
1322 (__copy_move_backward_a2): Likewise.
1323 (__equal_aux1): Use __memcmpable.
1324 (__lexicographical_compare_aux): Do not use memcmp optimization with
1326 * testsuite/25_algorithms/copy/94013.cc: New test.
1327 * testsuite/25_algorithms/copy_backward/94013.cc: New test.
1328 * testsuite/25_algorithms/equal/94013.cc: New test.
1329 * testsuite/25_algorithms/fill/94013.cc: New test.
1330 * testsuite/25_algorithms/lexicographical_compare/94013.cc: New test.
1331 * testsuite/25_algorithms/move/94013.cc: New test.
1332 * testsuite/25_algorithms/move_backward/94013.cc: New test.
1334 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
1335 Avoid redundant iterator comparisons (LWG 3410).
1337 2020-03-02 Jonathan Wakely <jwakely@redhat.com>
1340 * include/bits/stl_algobase.h (__memcmp): Allow pointer types to
1342 * testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test.
1344 * include/std/ranges (__detail::__maybe_empty_t): Rename to
1346 (__adaptor::_RangeAdaptor, join_view, split_view): Use new name.
1348 * include/bits/ranges_algo.h (shift_right): Add 'typename' to
1351 2020-03-01 H.J. Lu <hongjiu.lu@intel.com>
1353 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
1355 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1357 * testsuite/17_intro/headers/c++1998/charset.cc: Skip on *-*-hpux*.
1358 * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
1359 * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
1360 * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
1361 * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
1363 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
1364 Add libatomic option.
1365 * testsuite/30_threads/jthread/jthread.cc: Likewise.
1367 2020-02-29 François Dumont <fdumont@gcc.gnu.org>
1369 * include/bits/stl_algo.h
1370 (__find_if, __count_if, __is_permutation, std::is_permutation): Move...
1371 * include/bits/stl_algobase.h: ...here.
1372 * include/bits/hashtable_policy.h: Remove <bits/stl_algo.h> include.
1374 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1376 * testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
1378 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
1380 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
1381 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
1382 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
1383 * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
1384 * testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
1385 * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
1386 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
1390 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
1392 2020-02-28 Patrick Palka <ppalka@redhat.com>
1395 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
1396 Fix condition for when to use memcmp, making it consistent with the
1397 corresponding condition used in std::lexicographical_compare.
1398 * testsuite/25_algorithms/lexicographical_compare/93972.cc: New test.
1400 * testsuite/26_numerics/headers/numeric/synopsis.cc: Add signatures for
1401 functions introduced in C++11, C++17 and C++2a. Add 'constexpr' to
1402 existing signatures for C++2a.
1404 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1406 * testsuite/24_iterators/range_operations/advance_debug_neg.cc: Run
1407 test instead of just compiling it.
1409 2020-02-28 Patrick Palka <ppalka@redhat.com>
1411 * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to false
1412 whenever the underlying range models common_range.
1414 * include/std/ranges (__detail::_CachedPosition): New struct.
1415 (views::filter_view::_S_needs_cached_begin): New member variable.
1416 (views::filter_view::_M_cached_begin): New member variable.
1417 (views::filter_view::begin): Use _M_cached_begin to cache its
1419 (views::drop_view::_S_needs_cached_begin): New static member variable.
1420 (views::drop_view::_M_cached_begin): New member variable.
1421 (views::drop_view::begin): Use _M_cached_begin to cache its result
1422 when _S_needs_cached_begin.
1423 (views::drop_while_view::_M_cached_begin): New member variable.
1424 (views::drop_while_view::begin): Use _M_cached_begin to cache its
1426 (views::reverse_view::_S_needs_cached_begin): New static member
1428 (views::reverse_view::_M_cached_begin): New member variable.
1429 (views::reverse_view::begin): Use _M_cached_begin to cache its result
1430 when _S_needs_cached_begin.
1431 * testsuite/std/ranges/adaptors/drop.cc: Augment test to check that
1432 drop_view::begin caches its result.
1433 * testsuite/std/ranges/adaptors/drop_while.cc: Augment test to check
1434 that drop_while_view::begin caches its result.
1435 * testsuite/std/ranges/adaptors/filter.cc: Augment test to check that
1436 filter_view::begin caches its result.
1437 * testsuite/std/ranges/adaptors/reverse.cc: Augment test to check that
1438 reverse_view::begin caches its result.
1440 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1442 * testsuite/27_io/filesystem/operations/last_write_time.cc: Fixes for
1443 filesystems that silently truncate timestamps.
1444 * testsuite/experimental/filesystem/operations/last_write_time.cc:
1447 * testsuite/21_strings/basic_string/cons/char/1.cc: Disable
1448 -Wstringop-overflow warnings.
1450 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1452 * testsuite/lib/libstdc++.exp (v3_target_compile): Add
1453 -fdiagnostics-urls=never to options.
1455 2020-02-27 Patrick Palka <ppalka@redhat.com>
1457 * include/std/ranges (transform_view::_Iterator<_Const>): Befriend
1459 (transform_view::_Sentinel<_Const>): Befriend _Sentinel<!_Const>.
1460 (take_view::_Sentinel<_Const>): Likewise.
1461 (take_while_view::_Sentinel<_Const>): Likewise.
1462 (split_view::_OuterIter<_Const>): Befriend _OuterIter<!_Const>.
1463 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1464 * testsuite/std/ranges/adaptors/take.cc: Augment test.
1465 * testsuite/std/ranges/adaptors/take_while.cc: Augment test.
1466 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1468 * testsuite/25_algorithms/copy/constrained.cc: Don't assume that the
1469 base() of a vector<>::iterator is a pointer.
1470 * testsuite/25_algorithms/copy_backward/constrained.cc: Likewise.
1471 * testsuite/25_algorithms/move/constrained.cc: Likewise.
1472 * testsuite/25_algorithms/move_backward/constrained.cc: Likewise.
1473 * testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data()
1475 * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
1476 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise.
1477 * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
1478 * testsuite/25_algorithms/sort/constrained.cc: Likewise.
1479 * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
1481 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1483 * include/debug/array (operator<=>): Define for C++20.
1484 * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
1485 Adjust dg-error line numbers.
1486 * testsuite/23_containers/array/tuple_interface/
1487 tuple_element_debug_neg.cc: Likewise.
1489 * testsuite/23_containers/span/back_assert_neg.cc: Add #undef before
1490 defining _GLIBCXX_ASSERTIONS.
1491 * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
1492 * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
1493 * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
1494 * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
1495 * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
1496 * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
1497 * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise.
1498 * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise.
1499 * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise.
1500 * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise.
1501 * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise.
1502 * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
1504 * include/debug/string (__gnu_debug::basic_string::insert): Fix for
1505 C++98 where the member function of the base class returns void.
1507 * testsuite/util/testsuite_iterators.h (forward_iterator_wrapper): Add
1508 equality comparisons that support value-initialized iterators.
1510 * include/bits/boost_concept_check.h (__function_requires): Add
1511 _GLIBCXX14_CONSTEXPR.
1512 * testsuite/25_algorithms/min/concept_checks.cc: New test.
1514 2020-02-26 Patrick Palka <ppalka@redhat.com>
1517 * include/std/ranges (split_view::_InnerIter::operator==): Compare
1518 the operands' _M_i rather than their _M_i.current().
1519 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1521 P1645R1 constexpr for <numeric> algorithms
1522 * include/bits/stl_numeric.h (iota, accumulate, inner_product,
1523 partial_sum, adjacent_difference): Make conditionally constexpr for
1525 * include/std/numeric (__cpp_lib_constexpr_numeric): Define this feature
1527 (reduce, transform_reduce, exclusive_scan, inclusive_scan,
1528 transform_exclusive_scan, transform_inclusive_scan): Make conditionally
1529 constexpr for C++20.
1530 * include/std/version (__cpp_lib_constexpr_numeric): Define.
1531 * testsuite/26_numerics/accumulate/constexpr.cc: New test.
1532 * testsuite/26_numerics/adjacent_difference/constexpr.cc: Likewise.
1533 * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
1534 * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
1535 * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
1536 * testsuite/26_numerics/iota/constexpr.cc: Likewise.
1537 * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
1538 * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
1539 * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc: Likewise.
1540 * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc: Likewise.
1541 * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
1543 2020-02-26 Jonathan Wakely <jwakely@redhat.com>
1545 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Declare
1546 variables in smaller scope and avoid calling ranges::distance when we
1547 know they are pointers. Remove statically-unreachable use of
1548 __builtin_unreachable().
1549 * include/bits/stl_algobase.h (__lexicographical_compare::__lc):
1552 * include/std/ranges (__detail::__maybe_empty_t): Define new helper
1554 (__detail::__maybe_const_t): Likewise.
1555 (__adaptor::_RangeAdaptor): Use __maybe_empty_t.
1556 (transform_view, take_view, take_while_view, elements_view): Use
1558 (join_view, split_view): Use both.
1560 2020-02-25 Patrick Palka <ppalka@redhat.com>
1562 LWG 3397 basic_istream_view::iterator should not provide
1564 * include/std/ranges (basic_istream_view:_Iterator::iterator_category):
1566 (basic_istream_view:_Iterator::iterator_concept): ... this.
1567 * testsuite/std/ranges/istream_view.cc: Augment test.
1569 LWG 3325 Constrain return type of transformation function for
1571 * include/std/ranges (transform_view): Constrain the return type of the
1572 transformation function as per LWG 3325.
1573 * testsuite/std/ranges/adaptors/lwg3325_neg.cc: New test.
1575 LWG 3313 join_view::_Iterator::operator-- is incorrectly constrained
1576 * include/std/ranges (join_view::_Iterator::operator--): Require that
1577 range_reference_t<_Base> models common_range.
1578 * testsuite/std/ranges/adaptors/lwg3313_neg.cc: New test.
1580 LWG 3301 transform_view::_Iterator has incorrect iterator_category
1581 * include/std/ranges (transform_view::_Iterator::_S_iter_cat): Adjust
1582 determination of iterator_category as per LWG 3301.
1583 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1585 LWG 3292 iota_view is under-constrained
1586 * include/std/ranges (iota_view): Require that _Winc models semiregular
1588 * testsuite/std/ranges/iota/lwg3292_neg.cc: New test.
1590 2020-02-25 Jonathan Wakely <jwakely@redhat.com>
1592 * include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove
1593 during constant evaluation. Call __builtin_memmove directly instead of
1595 (__copy_or_move_backward): Likewise.
1596 * include/bits/stl_algobase.h (__memmove): Remove.
1597 (__copy_move<M, true, random_access_iterator_tag>::__copy_m)
1598 (__copy_move_backward<M, true, random_access_iterator_tag>::__copy_m):
1599 Use __builtin_memmove directly instead of __memmove.
1600 (__copy_move_a2): Do not use memmove during constant evaluation.
1601 (__copy_move_backward_a2): Use _IsMove constant to select correct
1602 __copy_move_backward specialization.
1603 * testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies
1604 begin turned into moves during constant evaluation.
1606 * testsuite/25_algorithms/move_backward/93872.cc: Add test left out of
1610 * include/bits/stl_algobase.h (__memmove): Cast away const before
1611 doing move assignment.
1612 * testsuite/25_algorithms/move/93872.cc: New test.
1613 * testsuite/25_algorithms/move_backward/93872.cc: New test.
1615 2020-02-24 Patrick Palka <ppalka@redhat.com>
1618 * include/bits/ranges_algobase.h (__copy_or_move,
1619 __copy_or_move_backward): Don't inspect the iter_value_t of the output
1620 iterator, instead inspect its iterator_traits directly.
1621 * include/bits/stl_iterator.h (back_insert_iterator::container):
1622 Conditionally initialize.
1623 (back_insert_iterator::difference_type): Conditionally define.
1624 (back_insert_iterator::back_insert_iterator): Conditionally define this
1625 default constructor.
1626 (front_insert_iterator::container): Conditionally initialize.
1627 (front_insert_iterator::difference_type): Conditionally define.
1628 (front_insert_iterator::front_insert_iterator): Conditionally define
1629 this default constructor.
1630 * 24_iterators/back_insert_iterator/pr93884.cc: New test.
1631 * 24_iterators/front_insert_iterator/pr93884.cc: New test.
1633 P0769R2 Add shift to <algorithm>
1634 * include/bits/ranges_algo.h (shift_left, shift_right): New.
1635 * testsuite/25_algorithms/shift_left/1.cc: New test.
1636 * testsuite/25_algorithms/shift_right/1.cc: New test.
1638 2020-02-24 Jonathan Wakely <jwakely@redhat.com>
1640 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1641 Make noexcept-specifier conditional.
1642 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: Check
1645 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1647 (operator==(istream_iterator, default_sentinel_t)): Add operator.
1648 (ostream_iterator::difference_type): Define to ptrdiff_t for C++20.
1649 * include/bits/streambuf_iterator.h
1650 (istreambuf_iterator(default_sentinel_t)): Add constructor.
1651 (operator==(istreambuf_iterator, default_sentinel_t)): Add operator.
1652 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
1654 * testsuite/24_iterators/istream_iterator/sentinel.cc: New test.
1655 * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
1657 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
1659 * include/std/ranges (__deep_const_range, __enable_view_impl): Remove.
1660 (ranges::enable_view): Simplify (LWG 3326).
1661 * include/bits/range_access.h (ranges::enable_view): Declare.
1662 * include/bits/regex.h (__enable_view_impl): Remove partial
1664 * include/bits/stl_multiset.h (__enable_view_impl): Likewise.
1665 * include/bits/stl_set.h (__enable_view_impl): Likewise.
1666 * include/bits/unordered_set.h (__enable_view_impl): Likewise.
1667 * include/debug/multiset.h (__enable_view_impl): Likewise.
1668 * include/debug/set.h (__enable_view_impl): Likewise.
1669 * include/debug/unordered_set (__enable_view_impl): Likewise.
1670 * include/experimental/string_view (ranges::enable_view): Define
1671 partial specialization.
1672 * include/std/span (ranges::enable_view): Likewise.
1673 * include/std/string_view (ranges::enable_view): Likewise.
1674 * testsuite/std/ranges/view.cc: Check satisfaction of updated concept.
1676 2020-02-21 Jonathan Wakely <jwakely@redhat.com>
1678 * include/std/optional (operator<=>(optional<T>, optional<U>))
1679 (operator<=>(optional<T>, nullopt), operator<=>(optional<T>, U)):
1681 * include/std/tuple (__tuple_cmp): New helper function for <=>.
1682 (operator<=>(tuple<T...>, tuple<U>...)): Define for C++20.
1683 * include/std/variant (operator<=>(variant<T...>, variant<T...>))
1684 (operator<=>(monostate, monostate)): Define for C++20.
1685 * testsuite/20_util/optional/relops/three_way.cc: New test.
1686 * testsuite/20_util/tuple/comparison_operators/three_way.cc: New test.
1687 * testsuite/20_util/variant/89851.cc: Move to ...
1688 * testsuite/20_util/variant/relops/89851.cc: ... here.
1689 * testsuite/20_util/variant/90008.cc: Move to ...
1690 * testsuite/20_util/variant/relops/90008.cc: ... here.
1691 * testsuite/20_util/variant/relops/three_way.cc: New test.
1693 2020-02-20 Patrick Palka <ppalka@redhat.com>
1695 * include/std/ranges (views::__adaptor::__maybe_refwrap): New utility
1697 (views::__adaptor::_RangeAdaptor::operator()): Add comments. Use
1698 __maybe_refwrap to capture lvalue references by reference, and then use
1699 unwrap_reference_t to forward the by-reference captures as references.
1700 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1701 * testsuite/std/ranges/adaptors/split_neg.cc: New test.
1703 * include/std/ranges (iota_view): Forward declare _Sentinel.
1704 (iota_view::_Iterator): Befriend _Sentinel.
1705 (iota_view::_Sentinel::_M_equal): New member function.
1706 (iota_view::_Sentinel::operator==): Use it.
1707 (views::_Iota::operator()): Forward __f using the correct type.
1708 * testsuite/std/ranges/access/ssize.cc (test06): Don't call views::iota
1709 with integers of different signedness, to appease iota_view's deduction
1711 * testsuite/std/ranges/iota/iota_view.cc: Augment test.
1713 2020-02-20 Jonathan Wakely <jwakely@redhat.com>
1715 * include/bits/range_access.h (ranges::begin): Reject array of
1717 (ranges::end, ranges::size): Require arrays to be bounded.
1718 (ranges::data): Require lvalue or borrowed_range.
1719 (ranges::iterator_t): Remove constraint.
1720 * testsuite/std/ranges/access/begin.cc: Do not check array of
1722 * testsuite/std/ranges/access/begin_neg.cc: New test.
1723 * testsuite/std/ranges/access/end_neg.cc: Adjust expected error.
1724 * testsuite/std/ranges/access/size_neg.cc: Adjust expected error.
1725 * testsuite/std/ranges/access/ssize.cc: Do not check array of
1728 * include/std/system_error (error_category::operator<=>)
1729 (operator<=>(const error_code&, const error_code&))
1730 (operator<=>(const error_condition&, const error_condition&)): Define
1732 * testsuite/19_diagnostics/error_category/operators/less.cc: New test.
1733 * testsuite/19_diagnostics/error_category/operators/three_way.cc: New
1735 * testsuite/19_diagnostics/error_code/operators/equal.cc: Remove
1737 * testsuite/19_diagnostics/error_code/operators/less.cc: New test.
1738 * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Remove
1740 * testsuite/19_diagnostics/error_code/operators/three_way.cc: New test.
1741 * testsuite/19_diagnostics/error_condition/operators/equal.cc: Remove
1743 * testsuite/19_diagnostics/error_condition/operators/less.cc: New test.
1744 * testsuite/19_diagnostics/error_condition/operators/not_equal.cc:
1745 Remove incorrect comment.
1746 * testsuite/19_diagnostics/error_condition/operators/three_way.cc: New
1749 * libsupc++/typeinfo (type_info::operator!=): Remove for C++20.
1751 * include/std/thread (thread::id::operator<=>): Define for C++20.
1752 * testsuite/30_threads/thread/id/70294.cc: Do not take addresses of
1753 functions in namespace std.
1754 * testsuite/30_threads/thread/id/operators_c++20.cc: New test.
1756 2020-02-19 Patrick Palka <ppalka@redhat.com>
1758 * testsuite/std/ranges/adaptors/split.cc (test03): Don't include the
1759 null terminator of the underlying string as part of the test_range.
1760 (main): Call test03.
1762 2020-02-19 Jonathan Wakely <jwakely@redhat.com>
1764 * include/bits/stl_iterator.h (common_iterator): Add copyable<I>
1765 requirement (LWG 3385).
1766 * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust
1767 expected declaration.
1769 * include/std/ranges (take_while_view, drop_view, drop_while_view)
1770 (elements_view:_Iterator): Initialize data members (LWG 3364).
1772 * libsupc++/compare (three_way_comparable): Remove always-false check
1773 that should have been removed with weak_equality (P1959R0).
1774 (three_way_comparable_with): Likewise. Reorder requirements (LWG 3360).
1776 * include/std/concepts (__detail::__partially_ordered_with): Move here
1778 (totally_ordered, totally_ordered_with): Use __partially_ordered_with
1779 to simplify definition (LWG 3331).
1780 * libsupc++/compare (__detail::__partially_ordered_with): Move to
1783 * include/std/concepts (totally_ordered_with): Remove redundant
1784 requirement (LWG 3329).
1786 * include/std/ranges (__detail::__convertible_to_non_slicing): New
1788 (__detail::__pair_like_convertible_to): Remove.
1789 (__detail::__pair_like_convertible_from): Add requirements for
1790 non-slicing conversions.
1791 (subrange): Constrain constructors with __convertible_to_non_slicing.
1792 Remove constructors from pair-like types. Add new deduction guide.
1793 * testsuite/std/ranges/subrange/lwg3282_neg.cc: New test.
1795 * include/bits/iterator_concepts.h (iter_move): Add declaration to
1796 prevent unqualified lookup finding a suitable declaration (LWG 3247).
1798 * include/std/memory_resource (polymorphic_allocator::allocate)
1799 (polymorphic_allocator::allocate_object): Change type of exception to
1800 bad_array_new_length (LWG 3237).
1801 * testsuite/20_util/polymorphic_allocator/lwg3237.cc: New test.
1803 * include/std/type_traits (__cpp_lib_unwrap_ref): Define (LWG 3348).
1804 * include/std/version (__cpp_lib_unwrap_ref): Likewise.
1805 * testsuite/20_util/unwrap_reference/1.cc: Check macro.
1806 * testsuite/20_util/unwrap_reference/3.cc: New test.
1808 * include/std/numeric (midpoint(T8, T*)): Do not check for complete
1809 type during overload resolution, use static assert instead (LWG 3200).
1810 * testsuite/26_numerics/midpoint/pointer.cc: Do not test with
1812 * testsuite/26_numerics/midpoint/pointer_neg.cc: New test.
1814 * include/std/span (span(T (&)[N])): Use non-deduced context to
1815 prevent first parameter from interfering with class template argument
1816 deduction (LWG 3369).
1817 * testsuite/23_containers/span/deduction.cc: Add missing 'const'.
1818 * testsuite/23_containers/span/lwg3255.cc: Check for construction from
1821 * include/std/span (span::const_iterator, span::const_reverse_iterator)
1822 (span::cbegin(), span::cend(), span::crbegin(), span::crend()):
1824 * testsuite/23_containers/span/everything.cc: Replace uses of cbegin
1826 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1828 * testsuite/20_util/specialized_algorithms/uninitialized_copy/
1829 constrained.cc: Likewise.
1830 * testsuite/20_util/specialized_algorithms/
1831 uninitialized_default_construct/constrained.cc: Likewise.
1832 * testsuite/20_util/specialized_algorithms/uninitialized_fill/
1833 constrained.cc: Likewise.
1834 * testsuite/20_util/specialized_algorithms/uninitialized_move/
1835 constrained.cc: Likewise.
1836 * testsuite/20_util/specialized_algorithms/
1837 uninitialized_value_construct/constrained.cc: Likewise.
1839 * include/bits/range_access.h (range_size_t): Define alias template.
1840 * include/std/ranges (all_view): Rename to views::all_t (LWG 3335).
1841 * testsuite/std/ranges/adaptors/filter.cc: Adjust to new name.
1843 * include/std/ranges (filter_view, transform_view, take_view)
1844 (join_view, split_view, reverse_view): Remove commented-out converting
1845 constructors (LWG 3280).
1847 * include/std/memory (uninitialized_construct_using_allocator): Use
1848 std::construct_at (LWG 3321).
1850 * include/std/memory_resource (polymorphic_allocator::allocate_bytes)
1851 (polymorphic_allocator::allocate_object)
1852 (polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304).
1854 LWG 3379. "safe" in several library names is misleading
1855 * include/bits/range_access.h (enable_safe_range): Rename to
1856 enable_borrowed_range.
1857 (__detail::__maybe_safe_range): Rename to __maybe_borrowed_range.
1858 (safe_range): Rename to borrowed_range.
1859 * include/bits/ranges_algo.h: Adjust to use new names.
1860 * include/bits/ranges_algobase.h: Likewise.
1861 * include/bits/ranges_uninitialized.h: Likewise.
1862 * include/std/ranges: Likewise.
1863 (safe_iterator_t): Rename to borrowed_iterator_t.
1864 (safe_subrange_t): Rename to borrowed_subrange_t.
1865 * include/std/span: Adjust to use new names.
1866 * include/std/string_view: Likewise.
1867 * include/experimental/string_view: Likewise.
1868 * testsuite/std/ranges/access/begin.cc: Likewise.
1869 * testsuite/std/ranges/access/cbegin.cc: Likewise.
1870 * testsuite/std/ranges/access/cdata.cc: Likewise.
1871 * testsuite/std/ranges/access/cend.cc: Likewise.
1872 * testsuite/std/ranges/access/crbegin.cc: Likewise.
1873 * testsuite/std/ranges/access/crend.cc: Likewise.
1874 * testsuite/std/ranges/access/data.cc: Likewise.
1875 * testsuite/std/ranges/access/end.cc: Likewise.
1876 * testsuite/std/ranges/access/rbegin.cc: Likewise.
1877 * testsuite/std/ranges/access/rend.cc: Likewise.
1878 * testsuite/std/ranges/safe_range.cc: Likewise.
1879 * testsuite/std/ranges/safe_range_types.cc: Likewise.
1880 * testsuite/util/testsuite_iterators.h: Likewise.
1882 * include/std/ranges (tuple_element<0, const subrange<I, S, K>>)
1883 (tuple_element<1, const subrange<I, S, K>>): Add partial
1884 specializations (LWG 3398).
1885 * testsuite/std/ranges/subrange/tuple_like.cc: New test.
1887 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1888 (__adjacent_find_fn, __remove_if_fn, __remove_copy_if_fn)
1889 (__unique_fn, __unique_copy_fn): Remove redundant conversions to bool.
1891 2020-02-18 Patrick Palka <ppalka@redhat.com>
1893 P1983R0 Wording for GB301, US296, US292, US291, and US283
1894 * include/std/ranges (filter_view::pred): New member function.
1895 (join_view::_Iterator::_Iterator): Remove now-redundant comment since
1896 P1983R0 fixes the highlighted issue in the same way.
1897 (join_view::_Iterator<_Const>): Add friend
1898 join_view::_Iterator<!_Const>.
1899 (join_view::_M_inner): Remove mutable specifier, effectively reverting
1900 the proposed wording changes of P3278.
1901 (join_view::begin): Refine the condition for when to return a const
1903 (split_view::_OuterIter::_OuterIter): Adjust constraints.
1904 * testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred
1907 2020-02-18 Jonathan Wakely <jwakely@redhat.com>
1910 * include/std/ranges (_RangeAdaptor): Add deduction guide.
1911 (filter_view::_Iterator): Add alias _Vp_iter and use in place of
1913 (filter_view::_Iterator::_S_iter_cat()): Add 'typename'.
1914 (transform_view::_Iterator): Add alias _Base_iter and use in place of
1916 (transform_view::_Iterator::_S_iter_cat()): Add 'typename'.
1917 (join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases.
1918 (join_view::_Iterator::_S_iter_cat()): Add 'typename'.
1919 (split_view::_InnerIter::_S_iter_cat()): Likewise.
1921 * testsuite/20_util/integer_comparisons/equal.cc: Fix invalid
1922 assumption that long is wider than int.
1923 * testsuite/20_util/integer_comparisons/greater_equal.cc: Likewise.
1924 * testsuite/20_util/integer_comparisons/less.cc: Likewise.
1925 * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
1926 * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
1928 P1976R2 Fixed-size span construction from dynamic range
1929 * include/std/span (__cpp_lib_span): Update value.
1930 (span(It, size_type), span(It, End)): Make conditionally explicit. Add
1932 (span(R&&), span(const span<OType, OExtent>&)): Likewise and relax
1934 (span::first<Count>(), span::last<Count>()): Use explicit type in
1936 (as_bytes, as_writable_bytes): Likewise.
1937 * include/std/version (__cpp_lib_span): Update value.
1938 * testsuite/23_containers/span/1.cc: Check new value.
1939 * testsuite/23_containers/span/2.cc: Check new value.
1940 * testsuite/23_containers/span/explicit.cc: New test.
1942 * include/std/span (span::__is_compatible_array): Simplify alias
1943 template by using requires-clause.
1944 (span::__is_compatible_ref): New alias template for constraining
1946 (span::__is_compatible_iterator, span::__is_compatible_range): Remove.
1947 (span(It, size_type), span(It, End)): Use __is_compatible_ref.
1948 (span(T(&)[N], span(array<T, N>&), span(const array<T, N>&)): Remove
1949 redundant parentheses.
1950 (span(R&&)): Add missing constraints.
1952 * include/std/span (span): Reorder members and rename template
1953 parameters to match declarations in the C++2a working paper.
1955 P2116R0 Remove tuple-like protocol support from fixed-extent span
1956 * include/std/span (get, tuple_size, tuple_element): Remove.
1957 * testsuite/23_containers/span/everything.cc: Remove checks for
1959 * testsuite/23_containers/span/get_neg.cc: Remove.
1960 * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove.
1961 * testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove.
1962 * testsuite/23_containers/span/tuple_size_neg.cc: Remove.
1964 2020-02-17 Patrick Palka <ppalka@redhat.com>
1966 P2106R0 Alternative wording for GB315 and GB316
1967 * include/bits/ranges_algo.h (in_fun_result): New.
1968 (for_each_result, for_each_n_result): Change into an alias of
1970 (in_in_result): New.
1971 (mismatch_result): Change into an alias of in_in_result.
1972 (copy_if_result): Change into an alias of in_out_result.
1973 (swap_ranges_result): Change into an alias of in_in_result.
1974 (unary_transform_result): Change into an alias of in_out_result.
1975 (in_in_out_result): New.
1976 (binary_transform_result): Change into an alias of in_in_out_result.
1977 (replace_copy_result, replace_copy_if_result, remove_copy_if_result,
1978 remove_copy_result, unique_copy_result, reverse_copy_result,
1979 rotate_copy_result, partial_sort_copy_result): Change into an alias of
1981 (in_out_out_result): New.
1982 (partition_copy_result, merge_result): Change into an alias of
1984 (set_union_result, set_intersection_result): Change into an alias of
1986 (set_difference_result): Change into an alias of in_out_result.
1987 (set_symmetric_difference): Change into an alias of in_in_out_result.
1988 (min_max_result): New.
1989 (minmax_result, minmax_element_result): Change into an alias of
1991 (in_found_result): New.
1992 (next_permutation_result, prev_permutation_result): Change into an alias
1994 (__next_permutation_fn::operator(), __prev_permutation_fn::operator()):
1995 Adjust following changes to next_permutation_result and
1996 prev_permutation_result.
1997 * include/bits/ranges_algobase.h (in_out_result): New.
1998 (copy_result, move_result, move_backward_result, copy_backward_result,
1999 copy_n_result): Change into an alias of in_out_result.
2000 * include/bits/ranges_uninitialized.h (uninitialized_copy_result,
2001 uninitialized_copy_n_result, uninitialized_move_result,
2002 uninitialized_move_n_result): Likewise.
2003 * testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of
2004 structured bindings.
2005 * testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise.
2007 P1243R4 Rangify new algorithms
2008 * include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn,
2009 for_each_n, __sample_fn, sample, __clamp_fn, clamp): New.
2010 * testsuite/25_algorithms/clamp/constrained.cc: New test.
2011 * testsuite/25_algorithms/for_each/constrained.cc: Augment test.
2012 * testsuite/25_algorithms/sample/constrained.cc: New test.
2014 2020-02-17 Jonathan Wakely <jwakely@redhat.com>
2016 P1964R2 Wording for boolean-testable
2017 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
2018 (__adjacent_find_fn): Cast result of predicate to bool.
2019 * include/std/concepts (__boolean): Remove.
2020 (__detail::__boolean_testable_impl, __detail::__boolean_testable): Add
2021 new helper concepts.
2022 (__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with)
2023 (predicate): Use __boolean_testable instead of boolean.
2024 * libsupc++/compare (__detail::__partially_ordered, _Synth3way):
2027 P1970R2 Consistency for size() functions: Add ranges::ssize
2028 * include/bits/range_access.h (_SSize, ssize): Define for C++20.
2029 * testsuite/std/ranges/access/ssize.cc: New test.
2031 P1956R1 On the names of low-level bit manipulation functions
2032 * include/bits/hashtable_policy.h: Update comment.
2033 * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename.
2034 (ispow2, ceil2, floor2, log2p1): Likewise.
2035 (__cpp_lib_int_pow2): Add feature test macro.
2036 * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1.
2037 * include/std/memory (assume_aligned): Adjust use of ispow2.
2038 * include/std/version (__cpp_lib_int_pow2): Add.
2039 * libsupc++/new_opa.cc: Adjust use of __ispow2.
2040 * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1.
2041 * testsuite/17_intro/freestanding.cc: Adjust use of ispow2.
2042 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ...
2043 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here.
2044 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ...
2045 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here.
2046 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ...
2047 * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here.
2048 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ...
2049 * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here.
2050 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ...
2051 * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
2053 * include/std/charconv: Add comment.
2055 PR libstdc++/92546 (partial)
2056 * include/bits/random.h (uniform_random_bit_generator): Move definition
2057 to <bits/uniform_int_dist.h>.
2058 * include/bits/ranges_algo.h: Include <bits/uniform_int_dist.h> instead
2060 * include/bits/ranges_algobase.h: Do not include <cmath>.
2061 * include/bits/uniform_int_dist.h (uniform_random_bit_generator):
2063 * include/std/ranges: Do not include <limits>.
2064 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
2066 PR libstdc++/92546 (partial)
2067 * include/Makefile.am: Add new header.
2068 * include/Makefile.in: Regenerate.
2069 * include/bits/int_limits.h: New header.
2070 * include/bits/parse_numbers.h (__select_int::_Select_int): Replace
2071 numeric_limits with __detail::__int_limits.
2072 * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one)
2073 (__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1):
2075 * include/std/charconv (__to_chars_8, __from_chars_binary)
2076 (__from_chars_alpha_to_num, from_chars): Likewise.
2077 * include/std/memory_resource (polymorphic_allocator::allocate)
2078 (polymorphic_allocator::allocate_object): Likewise.
2079 * include/std/string_view (basic_string_view::_S_compare): Likewise.
2080 * include/std/utility (in_range): Likewise.
2081 * testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for
2082 extra error about incomplete type __int_limits<bool>.
2083 * testsuite/26_numerics/bit/bit.count/countl_one.cc: Include <limits>.
2084 * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
2085 * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
2086 * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
2087 * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
2088 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Likewise.
2089 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise.
2090 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
2091 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
2092 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
2093 * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
2094 * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
2096 * python/libstdcxx/v6/printers.py (StdCmpCatPrinter.to_string): Update
2097 value for partial_ordering::unordered.
2099 * include/bits/iterator_concepts.h (indirectly_copyable_storable): Add
2100 const-qualified expression variations.
2101 * include/std/concepts (copyable): Likewise.
2103 * include/std/type_traits (__is_standard_integer): New helper trait.
2104 * include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater)
2105 (cmp_less_equal, cmp_greater_equal, in_range): Define for C++20.
2106 * include/std/version (__cpp_lib_integer_comparison_functions): Define.
2107 * testsuite/20_util/integer_comparisons/1.cc: New test.
2108 * testsuite/20_util/integer_comparisons/2.cc: New test.
2109 * testsuite/20_util/integer_comparisons/equal.cc: New test.
2110 * testsuite/20_util/integer_comparisons/equal_neg.cc: New test.
2111 * testsuite/20_util/integer_comparisons/greater_equal.cc: New test.
2112 * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test.
2113 * testsuite/20_util/integer_comparisons/greater_neg.cc: New test.
2114 * testsuite/20_util/integer_comparisons/in_range.cc: New test.
2115 * testsuite/20_util/integer_comparisons/in_range_neg.cc: New test.
2116 * testsuite/20_util/integer_comparisons/less.cc: New test.
2117 * testsuite/20_util/integer_comparisons/less_equal.cc: New test.
2118 * testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test.
2119 * testsuite/20_util/integer_comparisons/less_neg.cc: New test.
2120 * testsuite/20_util/integer_comparisons/not_equal.cc: New test.
2121 * testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test.
2123 2020-02-16 Patrick Palka <ppalka@redhat.com>
2125 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
2126 Move code after an early exit constexpr if to under an else branch.
2127 * include/bits/ranges_algobase.h (__equal_fn::operator()): Likewise.
2129 2020-02-15 Patrick Palka <ppalka@redhat.com>
2131 * include/bits/ranges_algo.h: Adjust whitespace and formatting.
2132 * include/bits/ranges_algobase.h: Likewise.
2133 * include/bits/ranges_uninitialized.h: Likewise.
2135 * include/bits/ranges_algo.h: (adjacent_find, all_of, any_of,
2136 binary_search, copy_if, count, count_if, equal_range, find, find_end,
2137 find_first_of, find_if, find_if_not, for_each, generate, generate_n,
2138 includes, inplace_merge, is_heap, is_heap_until, is_partitioned,
2139 is_permutation, is_sorted, is_sorted_until, lexicographical_compare,
2140 lower_bound, make_heap, max, max_element, merge, min, min_element,
2141 minmax, minmax_element, mismatch, next_permutation, none_of,
2142 nth_element, partial_sort, partial_sort_copy, partition, partition_copy,
2143 partition_point, pop_heap, prev_permutation, push_heap, remove,
2144 remove_copy, remove_copy_if, remove_if, replace, replace_copy,
2145 replace_copy_if, replace_if, reverse, reverse_copy, rotate, rotate_copy,
2146 search, search_n, set_difference, set_intersection,
2147 set_symmetric_difference, set_union, shuffle, sort, sort_heap,
2148 stable_partition, stable_sort, swap_ranges, transform, unique,
2149 unique_copy, upper_bound): Convert into function objects.
2150 * include/bits/ranges_algobase.h: (equal, copy, move, copy_n, fill_n,
2151 fill, move_backward, copy_backward): Likewise.
2152 * include/bits/ranges_uninitialized.h (uninitialized_default_construct,
2153 uninitialized_default_construct_n, uninitialized_value_construct,
2154 uninitialized_value_construct_n, uninitialized_copy,
2155 uninitialized_copy_n, uninitialized_move, uninitialized_move_n,
2156 uninitialized_fill, uninitialized_fill_n, construct_at, destroy_at,
2157 destroy, destroy_n): Likewise.
2159 * include/bits/ranges_algo.h (ranges::__find_end): Fold into ...
2160 (ranges::find_end): ... here.
2161 (ranges::__lexicographical_compare): Fold into ...
2162 (ranges::lexicographical_compare): ... here.
2163 * include/bits/ranges_algobase.h (ranges::__equal): Fold into ...
2164 (ranges::equal): ... here.
2166 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2168 * include/bits/erase_if.h (__cpp_lib_erase_if): Define to 202002L.
2169 * include/std/deque: Likewise.
2170 * include/std/forward_list: Likewise.
2171 * include/std/list: Likewise.
2172 * include/std/string: Likewise.
2173 * include/std/vector: Likewise.
2174 * include/std/version: Likewise.
2175 * testsuite/23_containers/deque/erasure.cc: Test for new value.
2176 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
2177 * testsuite/23_containers/list/erasure.cc: Likewise.
2178 * testsuite/23_containers/map/erasure.cc: Likewise.
2179 * testsuite/23_containers/set/erasure.cc: Likewise.
2180 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2181 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
2182 * testsuite/23_containers/vector/erasure.cc: Likewise.
2184 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2186 * include/bits/random.h (uniform_random_bit_generator): Require min()
2187 and max() to be constant expressions and min() to be less than max().
2188 * testsuite/26_numerics/random/concept.cc: Check additional cases.
2189 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
2191 2020-02-13 Patrick Palka <ppalka@redhat.com>
2193 * include/Makefile.am: Add <bits/ranges_uninitialized.h>.
2194 * include/Makefile.in: Regenerate.
2195 * include/bits/ranges_uninitialized.h: New header.
2196 * include/std/memory: Include it.
2197 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: New
2199 * .../uninitialized_copy/constrained.cc: New test.
2200 * .../uninitialized_default_construct/constrained.cc: New test.
2201 * .../uninitialized_fill/constrained.cc: New test.
2202 * .../uninitialized_move/constrained.cc: New test.
2203 * .../uninitialized_value_construct/constrained.cc: New test.
2205 * include/Makefile.am: Add bits/ranges_algobase.h
2206 * include/Makefile.in: Regenerate.
2207 * bits/ranges_algo.h: Include <bits/ranges_algobase.h> and refactor
2209 (__detail::__is_normal_iterator, __detail::is_reverse_iterator,
2210 __detail::__is_move_iterator, copy_result, move_result,
2211 __equal, equal, copy_result, move_result, move_backward_result,
2212 copy_backward_result, __copy_or_move_backward, __copy_or_move, copy,
2213 move, copy_backward, move_backward, copy_n_result, copy_n, fill_n,
2214 fill): Split out into ...
2215 * bits/range_algobase.h: ... this new header.
2217 2020-02-12 Patrick Palka <ppalka@redhat.com>
2219 LWG 3389 and LWG 3390
2220 * include/bits/stl_iterator.h (move_move_iterator): Use std::move when
2221 constructing the move_iterator with __i.
2222 (counted_iterator::counted_iterator): Use std::move when initializing
2224 * testsuite/24_iterators/counted_iterator/lwg3389.cc: New test.
2225 * testsuite/24_iterators/move_iterator/lwg3390.cc: New test.
2227 2020-02-12 Sandra Loosemore <sandra@codesourcery.com>
2232 * configure: Regenerated.
2234 2020-02-12 François Dumont <fdumont@gcc.gnu.org>
2236 * include/bits/hashtable.h
2237 (_Hashtable<>(_Hashtable&&, std::allocator_type&)): Add
2238 missing std namespace qualification to forward call.
2240 2020-02-09 Jonathan Wakely <jwakely@redhat.com>
2242 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Fix
2244 * testsuite/20_util/function_objects/range.cmp/less.ccL Likewise.
2246 * include/std/ranges: Fix non-ASCII characters in comment.
2248 * include/bits/range_cmp.h (__detail::__eq_builtin_ptr_cmp): Require
2249 equality comparison to be valid and return bool.
2250 (__detail::__less_builtin_ptr_cmp): Likewise for less-than comparison.
2251 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Check
2252 type with ambiguous conversion to fundamental types.
2253 * testsuite/20_util/function_objects/range.cmp/less.cc: Likewise.
2255 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2257 * include/bits/iterator_concepts.h (iter_difference_t, iter_value_t):
2259 (readable_traits): Rename to indirectly_readable_traits.
2260 (readable): Rename to indirectly_readable.
2261 (writable): Rename to indirectly_writable.
2262 (__detail::__iter_exchange_move): Do not use remove_reference_t.
2263 (indirectly_swappable): Adjust requires expression parameter types.
2265 * include/bits/ranges_algo.h (ranges::transform, ranges::replace)
2266 (ranges::replace_if, ranges::generate_n, ranges::generate)
2267 (ranges::remove): Use new name for writable.
2268 * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow):
2269 Use new name for readable.
2270 * include/ext/pointer.h (readable_traits<_Pointer_adapter<P>>): Use
2271 new name for readable_traits.
2272 * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise.
2273 * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for
2274 new definition of indirectly_readable.
2276 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Change
2277 to take parameters of common_iterator, instead of the common_iterator
2278 type itself. Fix argument for __common_iter_has_arrow constraint.
2279 (iterator_traits<common_iterator<I, S>>::pointer): Adjust.
2281 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2283 * include/std/ranges (iota_view): Add braces to prevent -Wempty-body
2285 (basic_istream_view::_Iterator::operator++()): Add missing return.
2287 2020-02-07 Patrick Palka <ppalka@redhat.com>
2289 * include/bits/ranges_algo.h: Remove extraneous &&.
2291 * include/std/ranges (ranges::__detail::__stream_extractable,
2292 ranges::basic_istream_view, ranges::istream_view): Define.
2293 * testsuite/std/ranges/istream_view: New test.
2295 Implement C++20 range adaptors
2296 * include/std/ranges: Include <bits/refwrap.h> and <tuple>.
2297 (subrange::_S_store_size): Mark as const instead of constexpr to
2298 avoid what seems to be a bug in GCC.
2299 (__detail::__box): Give it defaulted copy and move constructors.
2300 (ranges::views::_Single::operator()): Mark constexpr.
2301 (ranges::views::_Iota::operator()): Mark constexpr.
2302 (__detail::Empty): Define.
2303 (ranges::views::__closure::_RangeAdaptor,
2304 ranges::views::__closure::_RangeAdaptorClosure, ref_view, all_view,
2305 ranges::views::all, ranges::__detail::find_if,
2306 ranges::__detail::find_if_not, ranges::__detail::mismatch,
2307 ranges::detail::min, filter_view, ranges::views::filter, transform_view,
2308 ranges::views::transform, take_view, ranges::views::take,
2309 take_while_view, ranges::views::take_while, drop_view,
2310 ranges::views::drop, join_view, ranges::views::join,
2311 __detail::require_constant, __detail::tiny_range, split_view,
2312 ranges::views::split, ranges::views::_Counted, ranges::views::counted,
2313 common_view, ranges::views::common, reverse_view,
2314 ranges::views::reverse,
2315 ranges::views::__detail::__is_reversible_subrange,
2316 ranges::views::__detail::__is_reverse_view, reverse_view,
2317 ranges::views::reverse, __detail::__has_tuple_element, elements_view,
2318 ranges::views::elements, ranges::views::keys, ranges::views::values):
2320 (views): Alias for ranges::views.
2321 (tuple_size<ranges::subrange<>>, tuple_element<0, ranges::subrange>,
2322 tuple_element<1, ranges::subrange>): New partial specializations.
2323 * testsuite/std/ranges/adaptors/all.cc: New test.
2324 * testsuite/std/ranges/adaptors/common.cc: Likewise.
2325 * testsuite/std/ranges/adaptors/counted.cc: Likewise.
2326 * testsuite/std/ranges/adaptors/drop.cc: Likewise.
2327 * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
2328 * testsuite/std/ranges/adaptors/elements.cc: Likewise.
2329 * testsuite/std/ranges/adaptors/filter.cc: Likewise.
2330 * testsuite/std/ranges/adaptors/join.cc: Likewise.
2331 * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
2332 * testsuite/std/ranges/adaptors/split.cc: Likewise.
2333 * testsuite/std/ranges/adaptors/take.cc: Likewise.
2334 * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
2335 * testsuite/std/ranges/adaptors/transform.cc: Likewise.
2337 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2339 * libsupc++/compare (__cmp_cat::type): Define typedef for underlying
2340 type of enumerations and comparison category types.
2341 (__cmp_cat::_Ord, __cmp_cat::_Ncmp): Add underlying type.
2342 (__cmp_cat::_Ncmp::unordered): Change value to 2.
2343 (partial_ordering::_M_value, weak_ordering::_M_value)
2344 (strong_ordering::_M_value): Change type to __cmp_cat::type.
2345 (partial_ordering::_M_is_ordered): Remove data member.
2346 (partial_ordering): Use second bit of _M_value for unordered. Adjust
2347 comparison operators.
2348 (weak_ordering::operator partial_ordering): Simplify to remove
2350 (operator<=>(unspecified, weak_ordering)): Likewise.
2351 (strong_ordering::operator partial_ordering): Likewise.
2352 (strong_ordering::operator weak_ordering): Likewise.
2353 (operator<=>(unspecified, strong_ordering)): Likewise.
2354 * testsuite/18_support/comparisons/categories/partialord.cc: New test.
2355 * testsuite/18_support/comparisons/categories/strongord.cc: New test.
2356 * testsuite/18_support/comparisons/categories/weakord.cc: New test.
2358 * include/std/ranges (iota_view::_Iterator): Fix typo in name of
2359 __cpp_lib_three_way_comparison macro and use deduced return type for
2361 * testsuite/std/ranges/iota/iterator.cc: New test.
2363 2020-02-07 Patrick Palka <ppalka@redhat.com>
2364 Jonathan Wakely <jwakely@redhat.com>
2366 Implement C++20 constrained algorithms
2367 * include/Makefile.am: Add new header.
2368 * include/Makefile.in: Regenerate.
2369 * include/std/algorithm: Include <bits/ranges_algo.h>.
2370 * include/bits/ranges_algo.h: New file.
2371 * testsuite/25_algorithms/adjacent_find/constrained.cc: New test.
2372 * testsuite/25_algorithms/all_of/constrained.cc: New test.
2373 * testsuite/25_algorithms/any_of/constrained.cc: New test.
2374 * testsuite/25_algorithms/binary_search/constrained.cc: New test.
2375 * testsuite/25_algorithms/copy/constrained.cc: New test.
2376 * testsuite/25_algorithms/copy_backward/constrained.cc: New test.
2377 * testsuite/25_algorithms/copy_if/constrained.cc: New test.
2378 * testsuite/25_algorithms/copy_n/constrained.cc: New test.
2379 * testsuite/25_algorithms/count/constrained.cc: New test.
2380 * testsuite/25_algorithms/count_if/constrained.cc: New test.
2381 * testsuite/25_algorithms/equal/constrained.cc: New test.
2382 * testsuite/25_algorithms/equal_range/constrained.cc: New test.
2383 * testsuite/25_algorithms/fill/constrained.cc: New test.
2384 * testsuite/25_algorithms/fill_n/constrained.cc: New test.
2385 * testsuite/25_algorithms/find/constrained.cc: New test.
2386 * testsuite/25_algorithms/find_end/constrained.cc: New test.
2387 * testsuite/25_algorithms/find_first_of/constrained.cc: New test.
2388 * testsuite/25_algorithms/find_if/constrained.cc: New test.
2389 * testsuite/25_algorithms/find_if_not/constrained.cc: New test.
2390 * testsuite/25_algorithms/for_each/constrained.cc: New test.
2391 * testsuite/25_algorithms/generate/constrained.cc: New test.
2392 * testsuite/25_algorithms/generate_n/constrained.cc: New test.
2393 * testsuite/25_algorithms/heap/constrained.cc: New test.
2394 * testsuite/25_algorithms/includes/constrained.cc: New test.
2395 * testsuite/25_algorithms/inplace_merge/constrained.cc: New test.
2396 * testsuite/25_algorithms/is_partitioned/constrained.cc: New test.
2397 * testsuite/25_algorithms/is_permutation/constrained.cc: New test.
2398 * testsuite/25_algorithms/is_sorted/constrained.cc: New test.
2399 * testsuite/25_algorithms/is_sorted_until/constrained.cc: New test.
2400 * testsuite/25_algorithms/lexicographical_compare/constrained.cc: New
2402 * testsuite/25_algorithms/lower_bound/constrained.cc: New test.
2403 * testsuite/25_algorithms/max/constrained.cc: New test.
2404 * testsuite/25_algorithms/max_element/constrained.cc: New test.
2405 * testsuite/25_algorithms/merge/constrained.cc: New test.
2406 * testsuite/25_algorithms/min/constrained.cc: New test.
2407 * testsuite/25_algorithms/min_element/constrained.cc: New test.
2408 * testsuite/25_algorithms/minmax/constrained.cc: New test.
2409 * testsuite/25_algorithms/minmax_element/constrained.cc: New test.
2410 * testsuite/25_algorithms/mismatch/constrained.cc: New test.
2411 * testsuite/25_algorithms/move/constrained.cc: New test.
2412 * testsuite/25_algorithms/move_backward/constrained.cc: New test.
2413 * testsuite/25_algorithms/next_permutation/constrained.cc: New test.
2414 * testsuite/25_algorithms/none_of/constrained.cc: New test.
2415 * testsuite/25_algorithms/nth_element/constrained.cc: New test.
2416 * testsuite/25_algorithms/partial_sort/constrained.cc: New test.
2417 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test.
2418 * testsuite/25_algorithms/partition/constrained.cc: New test.
2419 * testsuite/25_algorithms/partition_copy/constrained.cc: New test.
2420 * testsuite/25_algorithms/partition_point/constrained.cc: New test.
2421 * testsuite/25_algorithms/prev_permutation/constrained.cc: New test.
2422 * testsuite/25_algorithms/remove/constrained.cc: New test.
2423 * testsuite/25_algorithms/remove_copy/constrained.cc: New test.
2424 * testsuite/25_algorithms/remove_copy_if/constrained.cc: New test.
2425 * testsuite/25_algorithms/remove_if/constrained.cc: New test.
2426 * testsuite/25_algorithms/replace/constrained.cc: New test.
2427 * testsuite/25_algorithms/replace_copy/constrained.cc: New test.
2428 * testsuite/25_algorithms/replace_copy_if/constrained.cc: New test.
2429 * testsuite/25_algorithms/replace_if/constrained.cc: New test.
2430 * testsuite/25_algorithms/reverse/constrained.cc: New test.
2431 * testsuite/25_algorithms/reverse_copy/constrained.cc: New test.
2432 * testsuite/25_algorithms/rotate/constrained.cc: New test.
2433 * testsuite/25_algorithms/rotate_copy/constrained.cc: New test.
2434 * testsuite/25_algorithms/search/constrained.cc: New test.
2435 * testsuite/25_algorithms/search_n/constrained.cc: New test.
2436 * testsuite/25_algorithms/set_difference/constrained.cc: New test.
2437 * testsuite/25_algorithms/set_intersection/constrained.cc: New test.
2438 * testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New
2440 * testsuite/25_algorithms/set_union/constrained.cc: New test.
2441 * testsuite/25_algorithms/shuffle/constrained.cc: New test.
2442 * testsuite/25_algorithms/sort/constrained.cc: New test.
2443 * testsuite/25_algorithms/stable_partition/constrained.cc: New test.
2444 * testsuite/25_algorithms/stable_sort/constrained.cc: New test.
2445 * testsuite/25_algorithms/swap_ranges/constrained.cc: New test.
2446 * testsuite/25_algorithms/transform/constrained.cc: New test.
2447 * testsuite/25_algorithms/unique/constrained.cc: New test.
2448 * testsuite/25_algorithms/unique_copy/constrained.cc: New test.
2449 * testsuite/25_algorithms/upper_bound/constrained.cc: New test.
2451 2020-02-06 Jonathan Wakely <jwakely@redhat.com>
2453 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Fix PR
2454 number in comment. Fix indentation.
2456 * include/bits/stl_algobase.h (__iter_swap, __iter_swap<true>): Remove
2457 redundant _GLIBCXX20_CONSTEXPR.
2459 * include/std/ranges (viewable_range): Replace decay_t with
2460 remove_cvref_t (LWG 3375).
2462 2020-02-05 Jonathan Wakely <jwakely@redhat.com>
2464 * include/bits/iterator_concepts.h (iter_reference_t)
2465 (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t):
2466 Remove workarounds for PR c++/67704.
2467 * testsuite/24_iterators/aliases.cc: New test.
2469 2020-02-05 Patrick Palka <ppalka@redhat.com>
2471 * include/bits/stl_iterator.h (move_iterator::move_iterator): Move __i
2472 when initializing _M_current.
2473 (move_iterator::base): Split into two overloads differing in
2474 ref-qualifiers as in P1207R4 for C++20.
2476 2020-02-04 Jonathan Wakely <jwakely@redhat.com>
2478 * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Un-define after
2482 * include/bits/unique_ptr.h (__uniq_ptr_impl::swap): Define.
2483 (unique_ptr::swap, unique_ptr<T[], D>::swap): Call it.
2484 * testsuite/20_util/unique_ptr/modifiers/93562.cc: New test.
2486 2020-02-01 Andrew Burgess <andrew.burgess@embecosm.com>
2488 * configure: Regenerate.
2490 2020-01-31 Patrick Palka <ppalka@redhat.com>
2492 * testsuite/24_iterators/range_operations/distance.cc: Do not assume
2493 test_range::end() returns the same type as test_range::begin().
2494 * testsuite/24_iterators/range_operations/next.cc: Likewise.
2495 * testsuite/24_iterators/range_operations/prev.cc: Likewise.
2496 * testsuite/util/testsuite_iterators.h (__gnu_test::test_range::end):
2497 Always return a sentinel<I>.
2499 2020-01-29 Jonathan Wakely <jwakely@redhat.com>
2502 * include/std/stop_token (stop_token::stop_possible()): Call new
2503 _M_stop_possible() function.
2504 (stop_token::stop_requested()): Do not use stop_possible().
2505 (stop_token::binary_semaphore): New class, as temporary stand-in for
2506 std::binary_semaphore.
2507 (stop_token::_Stop_cb::_M_callback): Add noexcept to type.
2508 (stop_token::_Stop_cb::_M_destroyed, stop_token::_Stop_cb::_M_done):
2509 New data members for symchronization with stop_callback destruction.
2510 (stop_token::_Stop_cb::_Stop_cb): Make non-template.
2511 (stop_token::_Stop_cb::_M_linked, stop_token::_Stop_cb::_S_execute):
2513 (stop_token::_Stop_cb::_M_run): New member function.
2514 (stop_token::_Stop_state::_M_stopped, stop_token::_Stop_state::_M_mtx):
2516 (stop_token::_Stop_state::_M_owners): New data member to track
2517 reference count for ownership.
2518 (stop_token::_Stop_state::_M_value): New data member combining a
2519 spinlock, the stop requested flag, and the reference count for
2520 associated stop_source objects.
2521 (stop_token::_Stop_state::_M_requester): New data member for
2522 synchronization with stop_callback destruction.
2523 (stop_token::_Stop_state::_M_stop_possible()): New member function.
2524 (stop_token::_Stop_state::_M_stop_requested()): Inspect relevant bit
2526 (stop_token::_Stop_state::_M_add_owner)
2527 (stop_token::_Stop_state::_M_release_ownership)
2528 (stop_token::_Stop_state::_M_add_ssrc)
2529 (stop_token::_Stop_state::_M_sub_ssrc): New member functions for
2530 updating reference counts.
2531 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2532 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2533 (stop_token::_Stop_state::_M_try_lock)
2534 (stop_token::_Stop_state::_M_try_lock_and_stop)
2535 (stop_token::_Stop_state::_M_do_try_lock): New member functions for
2537 (stop_token::_Stop_state::_M_request_stop): Use atomic operations to
2538 read and update state. Release lock while running callbacks. Use new
2539 data members to synchronize with callback destruction.
2540 (stop_token::_Stop_state::_M_remove_callback): Likewise.
2541 (stop_token::_Stop_state::_M_register_callback): Use atomic operations
2542 to read and update state.
2543 (stop_token::_Stop_state_ref): Handle type to manage _Stop_state,
2544 replacing shared_ptr.
2545 (stop_source::stop_source(const stop_source&)): Update reference count.
2546 (stop_source::operator=(const stop_source&)): Likewise.
2547 (stop_source::~stop_source()): Likewise.
2548 (stop_source::stop_source(stop_source&&)): Define as defaulted.
2549 (stop_source::operator=(stop_source&&)): Establish postcondition on
2551 (stop_callback): Enforce preconditions on template parameter. Replace
2552 base class with data member of new _Cb_impl type.
2553 (stop_callback::stop_callback(const stop_token&, Cb&&))
2554 (stop_callback::stop_callback(stop_token&&, Cb&&)): Fix TOCTTOU race.
2555 (stop_callback::_Cb_impl): New type wrapping _Callback member and
2556 defining the _S_execute member function.
2557 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: New
2559 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: New test.
2560 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: New test.
2561 * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
2563 * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: New
2565 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: New test.
2566 * testsuite/30_threads/stop_token/stop_source/assign.cc: New test.
2567 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: New
2570 * libsupc++/compare (__detail::__3way_builtin_ptr_cmp): Use
2571 three_way_comparable_with.
2572 (__detail::__3way_cmp_with): Remove workaround for fixed bug.
2573 (compare_three_way::operator()): Remove redundant constraint from
2575 (__detail::_Synth3way::operator()): Use three_way_comparable_with
2576 instead of workaround.
2577 * testsuite/18_support/comparisons/object/93479.cc: Prune extra
2578 output due to simplified constraints on compare_three_way::operator().
2581 * libsupc++/compare (__3way_builtin_ptr_cmp): Require <=> to be valid.
2582 * testsuite/18_support/comparisons/object/93479.cc: New test.
2584 * testsuite/std/ranges/access/end.cc: Do not assume test_range::end()
2585 returns the same type as test_range::begin(). Add comments.
2586 * testsuite/std/ranges/access/rbegin.cc: Likewise.
2587 * testsuite/std/ranges/access/rend.cc: Likewise.
2588 * testsuite/std/ranges/range.cc: Do not assume the sentinel for
2589 test_range is the same as its iterator type.
2590 * testsuite/util/testsuite_iterators.h (test_range::sentinel): Add
2591 operator- overloads to satisfy sized_sentinel_for when the iterator
2592 satisfies random_access_iterator.
2594 2020-01-28 Jonathan Wakely <jwakely@redhat.com>
2597 * include/bits/refwrap.h (reference_wrapper::operator()): Restrict
2598 static assertion to object types.
2601 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for
2602 clock_gettime instead of explicit glibc version check.
2603 * configure: Regenerate.
2605 2020-01-28 Martin Liska <mliska@suse.cz>
2608 * include/std/atomic: Fix typo.
2609 * include/std/optional: Likewise.
2611 2020-01-27 Andrew Burgess <andrew.burgess@embecosm.com>
2613 * configure: Regenerate.
2615 2020-01-27 Jonathan Wakely <jwakely@redhat.com>
2618 * include/std/span (span): Fix deduction guide.
2619 * testsuite/23_containers/span/deduction.cc: New test.
2621 2020-01-24 Jonathan Wakely <jwakely@redhat.com>
2623 * libsupc++/compare (__cmp_cat::_Eq): Remove enumeration type.
2624 (__cmp_cat::_Ord::equivalent): Add enumerator.
2625 (__cmp_cat::_Ord::_Less, __cmp_cat::_Ord::_Greater): Rename to less
2627 (partial_ordering, weak_ordering, strong_ordering): Remove
2628 constructors taking __cmp_cat::_Eq parameters. Use renamed
2631 2020-01-24 Maciej W. Rozycki <macro@wdc.com>
2633 * acinclude.m4: Handle `--with-toolexeclibdir='.
2634 * Makefile.in: Regenerate.
2635 * aclocal.m4: Regenerate.
2636 * configure: Regenerate.
2637 * doc/Makefile.in: Regenerate.
2638 * include/Makefile.in: Regenerate.
2639 * libsupc++/Makefile.in: Regenerate.
2640 * po/Makefile.in: Regenerate.
2641 * python/Makefile.in: Regenerate.
2642 * src/Makefile.in: Regenerate.
2643 * src/c++11/Makefile.in: Regenerate.
2644 * src/c++17/Makefile.in: Regenerate.
2645 * src/c++98/Makefile.in: Regenerate.
2646 * src/filesystem/Makefile.in: Regenerate.
2647 * testsuite/Makefile.in: Regenerate.
2649 2020-01-23 Alexandre Oliva <oliva@adacore.com>
2651 * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Reject macros.
2652 * configure: Rebuild.
2654 * testsuite/27_io/fpos/mbstate_t/1.cc: Zero-init mbstate_t.
2656 2020-01-23 Jonathan Wakely <jwakely@redhat.com>
2659 * include/Makefile.am (${host_builddir}/largefile-config.h): Simplify
2661 * include/Makefile.in: Regenerate.
2663 2020-01-20 Jonathan Wakely <jwakely@redhat.com>
2665 * doc/xml/faq.xml: Fix grammar.
2666 * doc/xml/manual/appendix_contributing.xml: Improve instructions.
2667 * doc/xml/manual/spine.xml: Update copyright years.
2668 * doc/html/*: Regenerate.
2670 2020-01-19 Eric S. Raymond <esr@thyrsus.com>
2672 * doc/xml/faq.xml: Update for SVN -> Git transition.
2673 * doc/xml/manual/appendix_contributing.xml: Likewise.
2674 * doc/xml/manual/status_cxx1998.xml: Likewise.
2675 * doc/xml/manual/status_cxx2011.xml: Likewise.
2676 * doc/xml/manual/status_cxx2014.xml: Likewise.
2677 * doc/xml/manual/status_cxx2017.xml: Likewise.
2678 * doc/xml/manual/status_cxx2020.xml: Likewise.
2679 * doc/xml/manual/status_cxxtr1.xml: Likewise.
2680 * doc/xml/manual/status_cxxtr24733.xml: Likewise.
2682 2020-01-18 Iain Sandoe <iain@sandoe.co.uk>
2684 * include/Makefile.am: Add coroutine to the std set.
2685 * include/Makefile.in: Regenerated.
2686 * include/std/coroutine: New file.
2688 2020-01-17 Jonathan Wakely <jwakely@redhat.com>
2691 * include/bits/c++config: Only do PSTL config when the header is
2692 present, to fix freestanding.
2693 * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare allocation
2694 functions if they were detected by configure.
2696 2020-01-16 Kai-Uwe Eckhardt <kuehro@gmx.de>
2697 Matthew Bauer <mjbauer95@gmail.com>
2698 Jonathan Wakely <jwakely@redhat.com>
2700 PR bootstrap/64271 (partial)
2701 * config/os/bsd/netbsd/ctype_base.h (ctype_base::mask): Change type
2703 (ctype_base::alpha, ctype_base::digit, ctype_base::xdigit)
2704 (ctype_base::print, ctype_base::graph, ctype_base::alnum): Sync
2705 definitions with NetBSD upstream.
2706 (ctype_base::blank): Use _CTYPE_BL.
2707 * config/os/bsd/netbsd/ctype_configure_char.cc (_C_ctype_): Remove
2709 (ctype<char>::classic_table): Use _C_ctype_tab_ instead of _C_ctype_.
2710 (ctype<char>::do_toupper, ctype<char>::do_tolower): Cast char
2711 parameters to unsigned char.
2712 * config/os/bsd/netbsd/ctype_inline.h (ctype<char>::is): Likewise.
2714 2020-01-16 François Dumont <fdumont@gcc.gnu.org>
2717 * include/bits/hashtable.h (_Hashtable<>): Make _Equality<> friend.
2718 * include/bits/hashtable_policy.h: Include <bits/stl_algo.h>.
2719 (_Equality_base): Remove.
2720 (_Equality<>::_M_equal): Review implementation. Use
2721 std::is_permutation.
2722 * testsuite/23_containers/unordered_multiset/operators/1.cc
2723 (Hash, Equal, test02, test03): New.
2724 * testsuite/23_containers/unordered_set/operators/1.cc
2725 (Hash, Equal, test02, test03): New.
2727 2020-01-15 Jonathan Wakely <jwakely@redhat.com>
2730 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type):
2731 Move here from <bits/range_access.h> and define using __int128 when
2733 (__is_integer_like, __is_signed_integer_like): Move here from
2734 <bits/range_access.h>.
2735 (weakly_incrementable): Use __is_signed_integer_like.
2736 * include/bits/range_access.h (__max_diff_type, __max_size_type)
2737 (__is_integer_like, __is_signed_integer_like): Move to
2738 <bits/iterator_concepts.h>.
2739 (__make_unsigned_like_t): Move here from <ranges>.
2740 * include/std/ranges (__make_unsigned_like_t): Move to
2741 <bits/range_access.h>.
2742 (iota_view): Replace using-directive with using-declarations.
2743 * testsuite/std/ranges/iota/93267.cc: New test.
2744 * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory.
2746 2020-01-13 Jonathan Wakely <jwakely@redhat.com>
2749 * include/bits/fs_path.h (path::generic_string<C,A>)
2750 [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Convert root-dir to forward-slash.
2751 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Check
2752 root-dir is converted to forward slash in generic pathname.
2753 * testsuite/27_io/filesystem/path/generic/utf.cc: New test.
2754 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: New test.
2757 * include/bits/atomic_base.h (__cpp_lib_atomic_value_initialization):
2759 (__atomic_flag_base, __atomic_base, __atomic_base<_PTp*>)
2760 (__atomic_float): Add default member initializer for C++20.
2761 * include/std/atomic (atomic): Likewise.
2762 (atomic::atomic()): Remove noexcept-specifier on default constructor.
2763 * include/std/version (__cpp_lib_atomic_value_initialization): Define.
2764 * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-error line
2766 * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2767 * testsuite/29_atomics/atomic/cons/value_init.cc: New test.
2768 * testsuite/29_atomics/atomic_flag/cons/value_init.cc: New test.
2769 * testsuite/29_atomics/atomic_flag/requirements/trivial.cc: Adjust
2770 expected result for is_trivially_default_constructible.
2771 * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
2772 * testsuite/29_atomics/atomic_float/value_init.cc: New test.
2773 * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Likewise.
2774 * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
2775 * testsuite/29_atomics/atomic_integral/cons/value_init.cc
2776 * testsuite/29_atomics/atomic_integral/requirements/trivial.cc: Adjust
2777 expected results for is_trivially_default_constructible.
2778 * testsuite/util/testsuite_common_types.h (has_trivial_dtor): Add
2781 2020-01-10 Jonathan Wakely <jwakely@redhat.com>
2783 * testsuite/util/testsuite_iterators.h: Improve comment.
2785 * testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11
2786 initialization syntax.
2789 * include/bits/streambuf_iterator.h (istreambuf_iterator): Make type
2790 of base class independent of __cplusplus value.
2791 [__cplusplus < 201103L] (istreambuf_iterator::reference): Override the
2792 type defined in the base class
2793 * testsuite/24_iterators/istreambuf_iterator/92285.cc: New test.
2794 * testsuite/24_iterators/istreambuf_iterator/requirements/
2795 base_classes.cc: Adjust expected base class for C++98.
2797 2020-01-09 Olivier Hainque <hainque@adacore.com>
2799 * doc/xml/manual/appendix_contributing.xml: Document _C2
2800 as a reserved identifier, by VxWorks.
2801 * include/bits/stl_map.h: Rename _C2 template typenames as _Cmp2.
2802 * include/bits/stl_multimap.h: Likewise.
2804 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2806 * include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==)
2807 (_ExtPtr_allocator::operator!=): Add missing const qualifiers.
2808 * include/ext/pointer.h (readable_traits<_Pointer_adapter<S>>): Add
2809 partial specialization to disambiguate the two constrained
2812 * include/experimental/type_traits (experimental::is_pod_v): Disable
2813 -Wdeprecated-declarations warnings around reference to std::is_pod.
2814 * include/std/type_traits (is_pod_v): Likewise.
2815 * testsuite/18_support/max_align_t/requirements/2.cc: Also check
2816 is_standard_layout and is_trivial. Do not check is_pod for C++20.
2817 * testsuite/20_util/is_pod/requirements/explicit_instantiation.cc:
2818 Add -Wno-deprecated for C++20.
2819 * testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise.
2820 * testsuite/20_util/is_pod/value.cc: Likewise.
2821 * testsuite/experimental/type_traits/value.cc: Likewise.
2823 2020-01-09 JeanHeyd "ThePhD" Meneide <phdofthehouse@gmail.com>
2825 * include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro.
2826 * include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20.
2827 * testuite/20_util/is_pod/deprecated-2a.cc: New test.
2829 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2832 * include/bits/random.h (operator>>): Check stream operation succeeds.
2833 * include/bits/random.tcc (operator<<): Remove redundant __ostream_type
2835 (operator>>): Remove redundant __istream_type typedefs. Check stream
2837 (__extract_params): New function to fill a vector from a stream.
2838 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
2841 * config/abi/pre/gnu.ver: Add new exports.
2842 * include/std/memory_resource (memory_resource::~memory_resource()):
2843 Do not define inline.
2844 (monotonic_buffer_resource::~monotonic_buffer_resource()): Likewise.
2845 * src/c++17/memory_resource.cc (memory_resource::~memory_resource()):
2847 (monotonic_buffer_resource::~monotonic_buffer_resource()): Define.
2848 * testsuite/20_util/monotonic_buffer_resource/93208.cc: New test.
2850 2020-01-09 François Dumont <fdumont@gcc.gnu.org>
2853 * include/bits/hashtable.h (_Hashtable<>::__alloc_node_gen_t): New
2855 (_Hashtable<>::__fwd_value_for): New.
2856 (_Hashtable<>::_M_assign_elements<>): Remove _NodeGenerator template
2858 (_Hashtable<>::_M_assign<>): Add _Ht template parameter.
2859 (_Hashtable<>::operator=(const _Hashtable<>&)): Adapt.
2860 (_Hashtable<>::_M_move_assign): Adapt. Replace std::move_if_noexcept
2862 (_Hashtable<>::_Hashtable(const _Hashtable&)): Adapt.
2863 (_Hashtable<>::_Hashtable(const _Hashtable&, const allocator_type&)):
2865 (_Hashtable<>::_Hashtable(_Hashtable&&, const allocator_type&)):
2867 * testsuite/23_containers/unordered_set/92124.cc: New.
2869 2020-01-08 Jonathan Wakely <jwakely@redhat.com>
2872 * src/c++17/fs_ops.cc (do_remove_all): New function implementing more
2873 detailed error reporting for remove_all. Check result of recursive
2874 call before incrementing iterator.
2875 (remove_all(const path&), remove_all(const path&, error_code&)): Use
2877 * src/filesystem/ops.cc (remove_all(const path&, error_code&)): Check
2878 result of recursive call before incrementing iterator.
2879 * testsuite/27_io/filesystem/operations/remove_all.cc: Check errors
2880 are reported correctly.
2881 * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise.
2883 2020-01-07 Thomas Rodgers <trodgers@redhat.com>
2885 * include/std/condition_variable
2886 (condition_variable_any::wait_on): Rename to match current draft
2888 (condition_variable_any::wait_on_until): Likewise.
2889 (condition_variable_any::wait_on_for): Likewise.
2890 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
2891 Adjust tests to account for renamed methods.
2893 2020-01-07 François Dumont <fdumont@gcc.gnu.org>
2896 * include/bits/stl_tree.h
2897 (_Rb_tree<>::_M_move_assign(_Rb_tree&, false_type)): Replace
2898 std::move_if_noexcept by std::move.
2899 * testsuite/23_containers/map/92124.cc: New.
2900 * testsuite/23_containers/set/92124.cc: New.
2902 2020-01-06 Jonathan Wakely <jwakely@redhat.com>
2904 * include/std/stop_token (stop_token): Remove operator!= (LWG 3254).
2905 (stop_source): Likewise (LWG 3362).
2906 * testsuite/30_threads/stop_token/stop_source.cc: Test equality
2909 * include/bits/stl_algobase.h (__is_byte_iter, __min_cmp)
2910 (lexicographical_compare_three_way): Do not depend on
2912 * include/std/version (__cpp_lib_three_way_comparison): Only define
2913 when __cpp_lib_concepts is defined.
2914 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
2916 2020-01-03 Jonathan Wakely <jwakely@redhat.com>
2918 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
2919 Only define four-argument overload when __cpp_lib_concepts is defined.
2921 2020-01-01 John David Anglin <danglin@gcc.gnu.org>
2923 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
2925 2020-01-01 Jakub Jelinek <jakub@redhat.com>
2927 Update copyright years.
2929 Copyright (C) 2020 Free Software Foundation, Inc.
2931 Copying and distribution of this file, with or without modification,
2932 are permitted in any medium without royalty provided the copyright
2933 notice and this notice are preserved.