1 2020-05-21 Jonathan Wakely <jwakely@redhat.com>
3 * include/experimental/bits/net.h (__endpoint, __protocol)
4 (__acceptable_protocol, __inet_protocol): New concepts.
5 (__detail::__is_endpoint): Move trait from <experimental/socket>.
6 (__is_protocol, __is_acceptable_protocol, __is_inet_protocol): New
8 (__endpoint, __protocol, __acceptable_protocol): New variable
10 * include/experimental/socket (__is_endpoint): Move to net.h header.
11 (basic_socket, basic_socket_acceptor): Check requirements.
13 * include/experimental/executor (use_future_t::use_future_t()): Fix
14 incorrect noexcept-specifier.
15 * include/experimental/internet (basic_resolver_results): Adjust
17 * include/experimental/socket (__basic_socket_impl::release): Add
19 (basic_socket(io_context&, const endpoint_type&)): Fix argument to
21 (basic_socket::release(), basic_socket::release(error_code&)): Add
22 missing member functions.
23 (basic_socket::is_open()): Add nodiscard attribute.
24 (basic_socket::close(error_code&)): Pass argument to base function.
25 (basic_socket_acceptor::release())
26 (basic_socket_acceptor::release(error_code&)): Add missing member
28 (basic_socket_acceptor::is_open()): Add nodiscard attribute.
29 (basic_socket_streambuf::error()): Add noexcept.
30 (basic_socket_iostream::error()): Likewise.
31 * testsuite/experimental/net/socket/basic_socket.cc: New test.
33 * include/experimental/buffer: Replace typedefs with
35 * include/experimental/executor: Likewise.
36 * include/experimental/internet: Likewise.
37 * include/experimental/socket: Likewise.
38 * include/experimental/timer: Likewise.
40 2020-05-19 Jonathan Wakely <jwakely@redhat.com>
43 * src/c++11/random.cc (__x86_rdseed): Allow fallback function to be
45 (__x86_rdseed_rdrand): New function that uses rdseed with rdrand
47 (random_device::_M_init): Use __x86_rdseed_rdrand when both
48 instructions are available.
49 * testsuite/26_numerics/random/random_device/94087.cc: New test.
51 2020-05-19 Patrick Palka <ppalka@redhat.com>
54 * testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value
56 * testsuite/20_util/tuple/element_access/get_neg.cc: Likewise.
58 2020-05-15 H.J. Lu <hongjiu.lu@intel.com>
61 * configure: Regenerated.
63 2020-05-14 H.J. Lu <hongjiu.lu@intel.com>
65 * configure: Regenerated.
67 2020-05-13 Alexandre Oliva <oliva@adacore.com>
70 * include/experimental/memory_resource
71 (__resource_adaptor_imp::do_allocate): Handle max_align_t on
72 x86-vxworks as on x86-solaris.
73 (__resource_adaptor_imp::do_deallocate): Likewise.
74 * testsuite/experimental/memory_resource/new_delete_resource.cc:
76 (BAD_MAX_ALIGN_T): Define on x86-vxworks as on x86-solaris.
77 (test03): Drop max-align test for char-aligned alloc.
79 2020-05-08 Ulrich Drepper <drepper@redhat.com>
81 * include/bits/atomic_base.h (atomic_flag): Implement test member
83 * include/std/version: Define __cpp_lib_atomic_flag_test.
84 * testsuite/29_atomics/atomic_flag/test/explicit.cc: New file.
85 * testsuite/29_atomics/atomic_flag/test/implicit.cc: New file.
87 2020-05-07 Jonathan Wakely <jwakely@redhat.com>
89 PR libstdc++/94971 (partial)
90 * include/bits/ranges_algo.h (ranges::__sample_fn): Qualify
91 std::sample using macro to work in parallel mode.
92 (__sort_fn): Likewise for std::sort.
93 (ranges::__nth_element_fn): Likewise for std::nth_element.
94 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
95 Likewise for std::__min_cmp.
96 * include/parallel/algobase.h (lexicographical_compare_three_way):
97 Add to namespace std::__parallel.
100 * include/parallel/multiway_merge.h (_GuardedIterator::operator*)
101 (_GuardedIterator::operator _RAIter, _UnguardedIterator::operator*)
102 (_UnguardedIterator::operator _RAIter): Add const qualifier.
103 (operator<(_GuardedIterator&, _GuardedIterator&)
104 (operator<=(_GuardedIterator&, _GuardedIterator&)
105 (operator<(_UnguardedIterator&, _UnguardedIterator&)
106 (operator<=(_UnguardedIterator&, _UnguardedIterator&): Change
107 parameters to const references.
109 2020-05-07 Eric Botcazou <ebotcazou@adacore.com>
111 * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Update.
112 * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
114 2020-05-06 François Dumont <fdumont@gcc.gnu.org>
116 * include/bits/stl_algobase.h (struct _Bit_iterator): New declaration.
117 (std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise.
118 * include/bits/stl_bvector.h (__fill_bvector): Move outside
119 _GLIBCXX_STD_C namespace.
120 (fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename
122 (__fill_a1): ...this.
123 * testsuite/25_algorithms/fill/bvector/1.cc: New.
125 2020-05-06 H.J. Lu <hongjiu.lu@intel.com>
127 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
129 2020-05-06 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
131 * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
132 * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
134 * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
135 * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
138 2020-05-06 Martin Liska <mliska@suse.cz>
141 2020-05-05 Martin Liska <mliska@suse.cz>
143 * include/parallel/multiway_merge.h:
144 Use const for _Compare template argument.
146 2020-05-06 Jonathan Wakely <jwakely@redhat.com>
148 * doc/xml/manual/abi.xml (abi.versioning.history): Document library
149 versions for GCC 9.[123] and 10.1 releases.
150 * doc/html/*: Regenerate.
152 2020-05-06 Jakub Jelinek <jakub@redhat.com>
154 * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
155 * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
156 * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
157 * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
158 * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
159 * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
160 * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
162 2020-05-05 Martin Liska <mliska@suse.cz>
165 * include/parallel/multiway_merge.h:
166 Use const for _Compare template argument.
168 2020-05-04 Fangrui Song <maskray@google.com>
170 * libsupc++/cxxabi.h (__cxa_finalize): Fix return type.
172 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
174 * doc/xml/faq.xml: Use working link for SGI STL FAQ.
175 * doc/html/*: Regenerate.
178 * src/c++17/memory_resource.cc
179 (monotonic_buffer_resource::_Chunk::release): Use size_t for shift
182 2020-05-04 Nathan Sidwell <nathan@acm.org>
185 * libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to
186 ptrdiff_t before negation, to show intent more clearly.
188 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
191 * src/c++17/memory_resource.cc (synchronized_pool_resource::_TPools):
192 Add comment about single-threaded behaviour.
193 (synchronized_pool_resource::_TPools::move_nonempty_chunks()): Hoist
194 class member access out of loop.
195 (synchronized_pool_resource::synchronized_pool_resource())
196 (synchronized_pool_resource::~synchronized_pool_resource())
197 (synchronized_pool_resource::release()): Check __gthread_active_p
198 before creating and/or deleting the thread-specific data key.
199 (synchronized_pool_resource::_M_thread_specific_pools()): Adjust
201 (synchronized_pool_resource::do_allocate(size_t, size_t)): Add fast
202 path for single-threaded case.
203 (synchronized_pool_resource::do_deallocate(void*, size_t, size_t)):
204 Likewise. Return if unable to find a pool that owns the allocation.
205 * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
207 * testsuite/20_util/synchronized_pool_resource/cons_single.cc: New
209 * testsuite/20_util/synchronized_pool_resource/release_single.cc: New
212 2020-05-03 Jonathan Wakely <jwakely@redhat.com>
215 * include/bits/stl_algobase.h (__fill_a1): Make overload for byte types
216 usable in constant expressions.
217 * testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and
220 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
223 * testsuite/17_intro/badnames.cc: Test values between _E9 and _E24 too.
225 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
226 Patrick Palka <ppalka@redhat.com>
229 * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove):
230 Add trait to determine return type and an alias for it.
231 (ranges::__cust_imove::_IMove::operator()): Use __result instead of
233 (iter_rvalue_reference_t): Use _IMove::__type instead of checking
234 the result of ranges::iter_move.
235 (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t
236 instead of checking the result of ranges::iter_move.
237 * testsuite/24_iterators/customization_points/92894.cc: New test.
238 * testsuite/24_iterators/indirect_callable/92894.cc: New test.
240 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
243 * include/std/type_traits (__is_complete_or_unbounded): Replace
245 * testsuite/17_intro/badnames.cc: New test.
247 2020-04-30 Jonathan Wakely <jwakely@redhat.com>
250 * include/bits/alloc_traits.h (allocator_traits::_S_construct)
251 (allocator_traits::_S_destroy)
252 (allocator_traits<allocator<T>>::construct): Use traits in
254 * include/bits/allocator.h (allocator<void>::construct)
255 (allocator<void>::destroy): Likewise.
256 * include/ext/malloc_allocator.h (malloc_allocator::construct)
257 (malloc_allocator::destroy): Likewise.
258 * include/ext/new_allocator.h (new_allocator::construct)
259 (new_allocator::destroy): Likewise.
260 * testsuite/20_util/allocator/89510.cc: New test.
261 * testsuite/ext/malloc_allocator/89510.cc: New test.
262 * testsuite/ext/new_allocator/89510.cc: New test.
264 2020-04-29 Jonathan Wakely <jwakely@redhat.com>
267 * include/bits/basic_string.tcc: Update comment about explicit
270 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
273 * include/bits/allocator.h (__cpp_lib_allocator_is_always_equal):
274 Remove non-standard macro.
275 * include/bits/stl_iterator.h (__cpp_lib_constexpr_iterator): Define
276 to indicate P1032R1 support.
277 * include/bits/stl_pair.h (__cpp_lib_constexpr_utility): Likewise.
278 * include/std/string_view (__cpp_lib_constexpr_string_view): Likewise.
279 * include/std/tuple (__cpp_lib_constexpr_tuple): Likewise.
280 * include/std/version (__cpp_lib_allocator_is_always_equal): Remove.
281 (__cpp_lib_constexpr_iterator, __cpp_lib_constexpr_string_view)
282 (__cpp_lib_constexpr_tuple, __cpp_lib_constexpr_utility): Define.
283 * testsuite/20_util/function_objects/constexpr_searcher.cc: Check
285 * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: Likewise.
286 * testsuite/21_strings/basic_string_view/operations/copy/char/
287 constexpr.cc: Likewise.
288 * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
291 * include/bits/alloc_traits.h (_S_construct): Restore placement
292 new-expression for C++11/14/17 and call std::construct_at directly
294 * include/bits/stl_construct.h (_Construct): Revert to non-constexpr
295 function returning void.
296 * testsuite/20_util/specialized_algorithms/
297 uninitialized_value_construct/94831.cc: New test.
298 * testsuite/23_containers/vector/cons/94831.cc: New test.
300 2020-04-28 Patrick Palka <ppalka@redhat.com>
302 LWG 3433 subrange::advance(n) has UB when n < 0
303 * include/std/ranges (subrange::prev): Fix typo.
304 (subrange::advance): Handle a negative argument as per the proposed
305 resolution of LWG 3433.
306 * testsuite/std/ranges/subrange/lwg3433.cc: New test.
308 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
309 Iain Sandoe <iain@sandoe.co.uk>
312 * include/std/coroutine: Implement handing for non-
313 class coroutine return types.
315 2020-04-24 Jonathan Wakely <jwakely@redhat.com>
317 * include/experimental/executor (service_already_exists): Make default
318 constructor public (LWG 3414).
319 * testsuite/experimental/net/execution_context/make_service.cc: Check
320 the service_already_exists can be default constructed.
322 2020-04-24 Kamlesh Kumar <kamleshbhalui@gmail.com>
323 Jonathan Wakely <jwakely@redhat.com>
327 * include/std/any (any): Rename template parameters for consistency
329 (any::_Decay): Rename to _Decay_if_not_any.
330 (any::any(T&&):: Remove is_constructible from constraints. Remove
331 non-standard overload.
332 (any::any(in_place_type_t<T>, Args&&...))
333 (any::any(in_place_type_t<T>, initializer_list<U>, Args&&...))
334 (any::emplace(Args&&...))
335 (any::emplace(initializer_list<U>, Args&&...)):
336 Use decay_t instead of _Decay.
337 * testsuite/20_util/any/cons/90415.cc: New test.
338 * testsuite/20_util/any/cons/92156.cc: New Test.
339 * testsuite/20_util/any/misc/any_cast_neg.cc: Make dg-error directives
341 * testsuite/20_util/any/modifiers/92156.cc: New test.
343 2020-04-23 Jonathan Wakely <jwakely@redhat.com>
345 * doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
346 * doc/html/*: Regenerate.
348 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Revert
349 value for C++17 to 201803L because P0858R0 is supported for C++17.
350 * include/std/version (__cpp_lib_array_constexpr): Likewise.
351 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
352 Check for value corresponding to P0031R0 features being tested.
353 * testsuite/23_containers/array/requirements/constexpr_iter.cc:
354 Check for value corresponding to P0858R0 features being tested.
356 * include/std/version (__cpp_lib_three_way_comparison): Define for
359 2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
361 * include/experimental/net/executor (system_context): Mark
362 system_context::system_context() = delete.
363 * testsuite/experimental/net/executor/1.cc: Add new
364 test to check system_context is not default constructible.
366 2020-04-23 Iain Sandoe <iain@sandoe.co.uk>
368 * include/std/coroutine: Update the inline namespace to __n4861.
369 Add the __cpp_lib_coroutine define, set to 201902L.
370 * include/std/version: Add __cpp_lib_coroutine, set to 201902L.
372 2020-04-22 Jonathan Wakely <jwakely@redhat.com>
374 * include/std/execution (__cpp_lib_execution): Define to indicate
375 support for P0024R2 and P1001R2.
376 * include/std/version (__cpp_lib_execution): Define.
377 * testsuite/25_algorithms/pstl/feature_test.cc: Only test macro
378 defined by <algorithm>, move other tests to new tests ...
379 * testsuite/25_algorithms/pstl/feature_test-2.cc: New test.
380 * testsuite/25_algorithms/pstl/feature_test-3.cc: New test.
381 * testsuite/25_algorithms/pstl/feature_test-4.cc: New test.
382 * testsuite/25_algorithms/pstl/feature_test-5.cc: New test.
384 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define
385 different values for C++17 and C++20, to indicate different feature
386 sets. Update value for C++20 to indicate P1032R1 support.
387 * include/std/version (__cpp_lib_array_constexpr): Likewise.
388 * testsuite/23_containers/array/comparison_operators/constexpr.cc:
389 Check feature test macro.
390 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
392 * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check
394 * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test
395 in C++17 mode and check feature test macro.
397 * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define
399 * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be
400 defined by <utility>.
402 * include/std/functional (__cpp_lib_concepts): Update macro value to
403 indicate P1964R2 support.
404 * include/std/version (__cpp_lib_concepts): Likewise.
405 * testsuite/std/concepts/1.cc: Adjust expected value.
406 * testsuite/std/concepts/2.cc: Likewise.
408 * include/std/functional (__cpp_lib_constexpr_invoke): Rename to
409 __cpp_lib_constexpr_functional.
410 * include/std/version (__cpp_lib_constexpr_invoke): Likewise.
411 * testsuite/20_util/function_objects/invoke/constexpr.cc: Adjust.
413 * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to
414 indicate P1006R1 support.
415 (__cpp_lib_to_address): Define to indicate P0653R2 support.
416 * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate
418 * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate
420 * include/std/atomic (__cpp_lib_atomic_float): Define to indicate
422 * include/std/memory (__cpp_lib_assume_aligned): Define to indicate
424 * include/std/memory_resource (__cpp_lib_polymorphic_allocator):
425 Define to indicate P0339R6 support.
426 * include/std/string_view (__cpp_lib_starts_ends_with): Define to
427 indicate P0457R2 support.
428 * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define
429 to indicate P0758R1 support.
430 (__cpp_lib_remove_cvref): Define to indicate P0550R2 support.
431 (__cpp_lib_type_identity): Define to indicate P0887R1 support.
432 * include/std/version (__cpp_lib_atomic_float)
433 (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref)
434 (__cpp_lib_type_identity, __cpp_lib_assume_aligned)
435 (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator)
436 (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with)
437 (__cpp_lib_to_address): Define.
438 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
440 * include/bits/stl_map.h (__cpp_lib_map_insertion): Remove old
442 * include/bits/unordered_map.h (__cpp_lib_unordered_map_insertion):
444 * include/std/version (__cpp_lib_map_insertion)
445 (__cpp_lib_unordered_map_insertion): Remove.
447 * include/std/condition_variable (__cpp_lib_jthread): Remove
448 redundant definition.
449 * include/std/stop_token (__cpp_lib_jthread): Update macro value to
450 indicate P1869R1 support.
451 * include/std/version (__cpp_lib_jthread): Update value.
452 * testsuite/30_threads/condition_variable_any/stop_token/1.cc: Check
453 for updated macro value.
454 * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
456 * testsuite/30_threads/jthread/1.cc: Likewise.
457 * testsuite/30_threads/jthread/2.cc: Likewise.
458 * testsuite/30_threads/stop_token/1.cc: Likewise.
459 * testsuite/30_threads/stop_token/2.cc: Likewise.
461 * testsuite/21_strings/basic_string/erasure.cc: Check for
462 __cpp_lib_erase_if macro.
463 * testsuite/23_containers/deque/erasure.cc: Add header name to #error
465 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
466 * testsuite/23_containers/list/erasure.cc: Likewise.
467 * testsuite/23_containers/map/erasure.cc: Likewise.
468 * testsuite/23_containers/set/erasure.cc: Likewise.
469 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
470 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
471 * testsuite/23_containers/vector/erasure.cc: Likewise.
473 2020-04-21 Jonathan Wakely <jwakely@redhat.com>
475 * include/bits/stl_iterator.h (__normal_iterator): Use synth-three-way
476 to define operator<=>.
477 * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: New test.
479 * doc/Makefile.am (xml_sources_manual): Add missing XML files.
480 * doc/Makefile.in: Regenerate.
481 * doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead
483 * doc/xml/manual/status_cxx2011.xml: Formatting and other corrections
484 to the C++11 status table.
485 * doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature
486 proposals with table matching contents of the C++14 standard.
487 * doc/xml/manual/status_cxx2017.xml: Add table matching contents of
489 * doc/html/*: Regenerate.
492 * include/std/type_traits (__is_nt_constructible_impl): Add partial
493 specializations for bounded arrays with non-empty initializers.
494 * testsuite/20_util/is_nothrow_constructible/value_c++20.cc: New test.
496 2020-04-20 Thomas Rodgers <trodgers@redhat.com>
498 * testsuite/lib/libstdc++.exp: Add additional_flags=
499 -DTBB_SUPRESS_DEPRECATED_MESSAGES=1 to suppress warnings when
500 compiling with a newer Thread Building Blocks.
502 2020-04-20 Jonathan Wakely <jwakely@redhat.com>
504 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
506 * testsuite/20_util/is_constructible/51185.cc: Make test class a
507 non-aggregate so that the test verifies the same thing in all -std
509 * testsuite/20_util/is_constructible/value-2.cc: Adjust expected
510 results for some types when paren-init for aggregates is supported.
512 * include/std/version (__cpp_lib_three_way_comparison): Update value.
513 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
514 (__detail::__synth3way): Add noexcept-specifier.
516 * include/bits/stl_map.h (map): Define operator<=> and remove
518 * include/bits/stl_multimap.h (multimap): Likewise.
519 * include/bits/stl_multiset.h (multiset): Likewise.
520 * include/bits/stl_set.h (set): Likewise.
521 * include/bits/stl_tree.h (_Rb_tree): Likewise.
522 (_Rb_tree_iterator, _Rb_tree_const_iterator): Remove redundant
523 operator!= for C++20.
524 * include/debug/map.h (__gnu_debug::map): Define operator<=> for C++20.
525 * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
526 * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
527 * include/debug/set.h (__gnu_debug::set): Likewise.
528 * testsuite/23_containers/map/operators/cmp_c++20.cc: New test.
529 * testsuite/23_containers/multimap/operators/cmp_c++20.cc: New test.
530 * testsuite/23_containers/multiset/operators/cmp_c++20.cc: New test.
531 * testsuite/23_containers/set/operators/cmp_c++20.cc: New test.
533 2020-04-20 Matthias Kretz <kretz@kde.org>
535 * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose.
537 2020-04-19 Jonathan Wakely <jwakely@redhat.com>
539 * include/bits/stl_queue.h (queue): Define operator<=> for C++20.
540 * include/bits/stl_stack.h (stack): Likewise.
541 * testsuite/23_containers/queue/cmp_c++20.cc: New test.
542 * testsuite/23_containers/stack/cmp_c++20.cc: New test.
544 * include/bits/unordered_map.h (unordered_map, unordered_multimap):
545 Remove redundant operator!= for C++20.
546 * include/bits/unordered_set.h (unordered_set, unordered_multiset):
548 * include/debug/unordered_map (unordered_map, unordered_multimap):
550 * include/debug/unordered_set (unordered_set, unordered_multiset):
554 * include/debug/formatter.h (_Error_formatter::_Parameter): Fix
555 redundant assignment in constructor.
557 2020-04-18 Jonathan Wakely <jwakely@redhat.com>
559 * include/std/chrono (duration, time_point): Define operator<=> and
560 remove redundant operator!= for C++20.
561 * testsuite/20_util/duration/comparison_operators/three_way.cc: New
563 * testsuite/20_util/time_point/comparison_operators/three_way.cc: New
566 * testsuite/util/native_type/native_priority_queue.hpp: Use
567 allocator_traits to rebind allocator.
569 2020-04-17 Jonathan Wakely <jwakely@redhat.com>
571 * include/bits/forward_list.h (forward_list): Define operator<=> and
572 remove redundant comparison operators for C++20.
573 * include/bits/stl_bvector.h (vector<bool, Alloc>): Likewise.
574 * include/bits/stl_deque.h (deque): Likewise.
575 * include/bits/stl_iterator.h (__normal_iterator): Likewise.
576 * include/bits/stl_list.h (list): Likewise.
577 * include/bits/stl_vector.h (vector): Likewise.
578 * include/debug/deque (__gnu_debug::deque): Likewise.
579 * include/debug/forward_list (__gnu_debug::forward_list): Likewise.
580 * include/debug/list (__gnu_debug::list): Likewise.
581 * include/debug/safe_iterator.h (__gnu_debug::_Safe_iterator):
583 * include/debug/vector (__gnu_debug::vector): Likewise.
584 * include/ext/pointer.h (__gnu_cxx::_Pointer_adapter): Define
585 operator<=> for C++20.
586 * testsuite/23_containers/deque/operators/cmp_c++20.cc: New test.
587 * testsuite/23_containers/forward_list/cmp_c++20.cc: New test.
588 * testsuite/23_containers/list/cmp_c++20.cc: New test.
589 * testsuite/23_containers/vector/bool/cmp_c++20.cc: New test.
590 * testsuite/23_containers/vector/cmp_c++20.cc: New test.
592 * include/bits/basic_string.h (basic_string): Define operator<=> and
593 remove redundant comparison operators for C++20.
594 * include/bits/char_traits.h (__gnu_cxx::char_traits, char_traits):
595 Add comparison_category members.
596 (__detail::__char_traits_cmp_cat): New helper to get comparison
597 category from char traits class.
598 * include/bits/regex.h (regex_traits::_RegexMask::operator!=): Do not
600 (sub_match): Define operator<=> and remove redundant comparison
602 (match_results): Remove redundant operator!= for C++20.
603 * include/std/string_view (basic_string_view): Define operator<=> and
604 remove redundant comparison operators for C++20.
605 * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc: New
607 * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc:
609 * testsuite/21_strings/basic_string_view/operations/copy/char/
610 constexpr.cc: Initialize variable.
611 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
612 constexpr.cc: Likewise.
613 * testsuite/21_strings/basic_string_view/operators/char/2.cc: Add
614 dg-do directive and remove comments showing incorrect signatures.
615 * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
617 * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc:
619 * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc:
621 * testsuite/28_regex/sub_match/compare_c++20.cc: New test.
623 2020-04-16 Jonathan Wakely <jwakely@redhat.com>
625 * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Remove
626 name of unused parameter.
628 2020-04-15 Jonathan Wakely <jwakely@redhat.com>
630 * include/bits/fs_dir.h (file_status): Define operator== for C++20.
631 (directory_entry): Define operator<=> and remove redundant comparison
633 * include/bits/fs_fwd.h (space_info): Define operator== for C++20.
634 * include/bits/fs_path.h (path): Define operator<=> and remove
635 redundant comparison operators for C++20.
636 * testsuite/27_io/filesystem/path/compare/compare.cc: Fix comment.
637 * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
638 * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
639 * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
641 * include/bits/allocator.h (operator!=): Do not define for C++20.
642 * include/bits/locale_classes.h (operator!=): Likewise.
643 * include/bits/std_function.h (operator==(nullptr_t, const function&))
644 (operator!=(const function&, nullptr_t))
645 (operator!=(nullptr_t, const function&)): Likewise.
646 * include/ext/bitmap_allocator.h (operator!=): Likewise.
647 * include/ext/debug_allocator.h (operator!=): Likewise.
648 * include/ext/extptr_allocator.h (operator!=): Likewise.
649 * include/ext/malloc_allocator.h (operator!=): Likewise.
650 * include/ext/mt_allocator.h (operator!=): Likewise.
651 * include/ext/new_allocator.h (operator!=): Likewise.
652 * include/ext/pool_allocator.h (operator!=): Likewise.
653 * include/ext/throw_allocator.h (operator!=): Likewise.
654 * include/std/bitset (bitset::operator!=): Likewise.
655 * include/std/memory_resource (operator!=): Likewise.
656 * include/std/scoped_allocator (operator!=): Likewise.
658 * include/std/typeindex (operator<=>): Define for C++20.
659 * testsuite/20_util/typeindex/comparison_operators_c++20.cc: New test.
661 2020-04-14 Jonathan Wakely <jwakely@redhat.com>
663 * libsupc++/compare (compare_three_way): Fix constraint so that
664 BUILTIN-PTR-THREE-WAY does not require three_way_comparable_with.
665 * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc:
669 * include/bits/shared_ptr.h (operator<=>): Define for C++20.
670 * include/bits/shared_ptr_base.h (operator<=>): Likewise.
671 * include/bits/unique_ptr.h (operator<=>): Add inline specifier.
672 * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc: New test.
673 * testsuite/20_util/shared_ptr/comparison/less.cc: Do not expect
674 std::less<A*> to be used when comparing std::shared_ptr<A> objects in
678 * libsupc++/compare (__unspec): Add noexcept-specifier to constructor.
679 * testsuite/18_support/comparisons/categories/94565.cc: New test.
681 2020-04-13 Iain Sandoe <iain@sandoe.co.uk>
683 * include/std/coroutine: Update coroutines builtin define,
686 2020-04-09 Jonathan Wakely <jwakely@redhat.com>
688 * libsupc++/compare (compare_three_way): Fix noexcept-specifier.
689 (strong_order, weak_order, partial_order): Replace uses of <=> with
690 compare_three_way function object (LWG 3324).
691 * testsuite/18_support/comparisons/algorithms/partial_order.cc: Add
692 equality operator so that X satisfies three_way_comparable.
693 * testsuite/18_support/comparisons/algorithms/strong_order.cc:
695 * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise.
697 * include/bits/unique_ptr.h (operator<=>): Define for C++20.
698 * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
699 * testsuite/20_util/default_delete/void_neg.cc: Likewise.
700 * testsuite/20_util/unique_ptr/comparison/compare.cc: New test.
701 * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc: New test.
703 2020-04-08 Jonathan Wakely <jwakely@redhat.com>
705 * include/bits/slice_array.h (operator==(const slice&, const slice&)):
707 * include/std/complex (operator==(const T&, const complex<T>&))
708 (operator!=(const complex<T>&, const complex<T>&))
709 (operator!=(const complex<T>&, const T&))
710 (operator!=(const T&, const complex<T>&)): Do not declare for C++20.
711 * testsuite/26_numerics/slice/compare.cc: New test.
713 * include/std/charconv (to_chars_result, from_chars_result): Add
714 defaulted equality comparisons for C++20.
715 * testsuite/20_util/from_chars/compare.cc: New test.
716 * testsuite/20_util/to_chars/compare.cc: New test.
718 2020-04-07 Jonathan Wakely <jwakely@redhat.com>
721 * include/std/charconv (__integer_to_chars_result_type)
722 (__integer_from_chars_result_type): Use __or_ instead of __or_v_ to
724 * testsuite/20_util/from_chars/1.cc: Run test as C++14 and replace
725 use of std::string_view with std::string.
726 * testsuite/20_util/from_chars/2.cc: Likewise.
727 * testsuite/20_util/to_chars/1.cc: Likewise.
728 * testsuite/20_util/to_chars/2.cc: Likewise.
730 2020-04-06 Jonathan Wakely <jwakely@redhat.com>
733 * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Make it
734 usable in constant expressions for C++20.
735 (__gnu_cxx::char_traits::copy, __gnu_cxx::char_traits::assign): Add
736 _GLIBCXX20_CONSTEXPR.
737 (std::char_traits<char>, std::char_traits<wchar_t>)
738 (std::char_traits<char8_t>): Make move, copy and assign usable in
739 constant expressions for C++20.
740 (std::char_traits<char16_t>, std::char_traits<char32_t>): Make move
741 and copy usable in constant expressions for C++20.
742 * include/std/string_view (basic_string_view::copy): Add
743 _GLIBCXX20_CONSTEXPR.
744 * testsuite/21_strings/basic_string_view/operations/copy/char/
745 constexpr.cc: New test.
746 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
747 constexpr.cc: New test.
749 2020-04-05 Gerald Pfeifer <gerald@pfeifer.com>
751 * doc/xml/manual/appendix_contributing.xml: Refer to Git
752 documentation instead of Subversion. Switch to https.
753 * doc/html/manual/appendix_contributing.html: Regenerate.
755 2020-04-03 Jonathan Wakely <jwakely@redhat.com>
758 * include/bits/ptr_traits.h (__to_address): Add special case for debug
759 iterators, to avoid dereferenceable check.
760 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
761 * testsuite/20_util/to_address/debug.cc: New test.
763 2020-04-01 Andrea Corallo <andrea.corallo@arm.com>
765 * testsuite/experimental/net/execution_context/use_service.cc:
766 Require pthread and gthreads.
768 2020-04-01 Gerald Pfeifer <gerald@pfeifer.com>
770 * doc/xml/manual/appendix_free.xml: Move "free books" list from
772 * doc/html/manual/appendix_free.html: Regenerate.
774 2020-03-31 Ville Voutilainen <ville.voutilainen@gmail.com>
776 Library-side tests for parenthesized aggregate init
781 * testsuite/20_util/allocator_traits/members/92878_92947.cc: New.
782 * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
783 * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
784 * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
785 * testsuite/20_util/optional/assignment/92878_92947.cc: Likewise.
786 * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
787 * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
788 * testsuite/20_util/shared_ptr/creation/92878_92947.cc: Likewise.
789 * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
791 * testsuite/20_util/unique_ptr/creation/92878_92947.cc: Likewise.
792 * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
793 * testsuite/20_util/variant/92878_92947.cc: Likewise.
794 * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
796 * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
798 * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
800 * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
802 * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
804 * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
806 * testsuite/23_containers/priority_queue/92878_92947.cc: Likewise.
807 * testsuite/23_containers/queue/92878_92947.cc: Likewise.
808 * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
810 * testsuite/23_containers/stack/92878_92947.cc: Likewise.
811 * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
813 * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
815 * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
817 * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
819 * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
822 2020-03-28 Jonathan Wakely <jwakely@redhat.com>
824 * testsuite/20_util/is_constructible/value-2.cc: Fix test to account
825 for changes due to parenthesized aggregate-initialization in C++20.
826 * testsuite/20_util/time_point/cons/81468.cc: Fix test to not clash
827 with std::chrono::sys_time in C++20.
829 * include/bits/stl_iterator.h (reverse_iterator): Use requires-clause
830 to constrain C++20 versions of comparison operators. Fix backwards
831 logic of relational operators.
832 (move_iterator): Use requires-clause to constrain comparison operators
833 in C++20. Do not declare non-standard same-type overloads for C++20.
834 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Check result
835 of comparisons and check using greedy_ops type.
836 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Likewise.
837 * testsuite/24_iterators/move_iterator/greedy_ops.cc: Remove redundant
838 main function from compile-only test.
839 * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise.
841 2020-03-27 Jonathan Wakely <jwakely@redhat.com>
843 * include/bits/range_cmp.h (__cpp_lib_ranges): Define.
844 * include/bits/stl_iterator.h: Check value of __cpp_concepts so that
845 C++20 concepts are required.
846 * include/bits/stl_iterator_base_types.h: Likewise.
847 * include/std/concepts: Likewise.
848 * include/std/version: Likewise.
849 * testsuite/std/ranges/headers/ranges/synopsis.cc: Check feature test
852 * include/bits/stl_iterator.h (reverse_iterator::iterator_concept)
853 (reverse_iterator::iterator_category): Define for C++20.
854 (reverse_iterator): Define comparison operators correctly for C++20.
855 (__normal_iterator): Add constraints to comparison operators for C++20.
856 (move_iterator::operator++(int)) [__cpp_lib_concepts]: Define new
857 overload for input iterators.
858 (move_iterator): Add constraints to comparison operators for C++20.
859 Define operator<=> for C++20.
860 * testsuite/24_iterators/move_iterator/input_iterator.cc: New test.
861 * testsuite/24_iterators/move_iterator/move_only.cc: New test.
862 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: New test.
863 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: New test.
865 * include/bits/iterator_concepts.h (__detail::__decay_copy)
866 (__detail::__member_begin, __detail::__adl_begin): Move here from
867 <bits/range_access.h>.
868 (__detail::__ranges_begin, __detail::__range_iter_t): Define.
869 * bits/range_access.h (__cust_access::__decay_copy)
870 (__cust_access::__member_begin, __cust_access::__adl_begin): Move to
871 <bits/iterator_concepts.h>.
872 (ranges::iterator_t): Use __detail::__range_iter_t.
873 * include/bits/stl_iterator.h (back_insert_iterator): Simplify
874 conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members.
875 (front_insert_iterator): Likewise.
876 (insert_iterator): Implement changes from P0896R4 for C++20.
877 * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test.
878 * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test.
879 * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust
880 for inclusion in synopsis_c++20.cc which expects different signatures
881 for some function templates.
882 * testsuite/24_iterators/insert_iterator/constexpr.cc: New test.
884 * include/std/type_traits (__is_array_convertible): Move definition
885 to immediately after is_convertible.
887 2020-03-26 Jonathan Wakely <jwakely@redhat.com>
889 * include/std/chrono (chrono::days, chrono::weeks, chrono::years)
890 (chrono::months, chrono::sys_days, chrono::local_t)
891 (chrono::local_time, chrono::local_seconds, chrono::local_days):
893 (chrono::time_point): Add missing static assert.
894 * testsuite/20_util/time_point/requirements/duration_neg.cc: New test.
895 * testsuite/std/time/clock/file/overview.cc: New test.
896 * testsuite/std/time/clock/file/members.cc: New test.
897 * testsuite/std/time/syn_c++20.cc: New test.
899 2020-03-25 Mike Crowe <mac@mcrowe.com>
901 * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
903 * testsuite/30_threads/shared_timed_mutex/try_lock_until/2.cc: New
906 2020-03-25 Jonathan Wakely <jwakely@redhat.com>
908 * include/bits/fs_fwd.h (filesystem::__file_clock): Move to ...
909 * include/std/chrono (filesystem::__file_clock): Here.
910 (filesystem::__file_clock::from_sys, filesystem::__file_clock::to_sys):
911 Define public member functions for C++20.
912 (is_clock, is_clock_v): Define traits for C++20.
913 * include/std/condition_variable (condition_variable::wait_until): Add
914 check for valid clock.
915 * include/std/future (_State_baseV2::wait_until): Likewise.
916 * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Likewise.
917 * include/std/shared_mutex (shared_timed_mutex::try_lock_shared_until):
919 * include/std/thread (this_thread::sleep_until): Likewise.
920 * testsuite/30_threads/condition_variable/members/2.cc: Qualify
921 slow_clock with new namespace.
922 * testsuite/30_threads/condition_variable/members/clock_neg.cc: New
924 * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
926 * testsuite/30_threads/future/members/clock_neg.cc: New test.
927 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
928 Qualify slow_clock with new namespace.
929 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/
930 clock_neg.cc: New test.
931 * testsuite/30_threads/shared_future/members/clock_neg.cc: New
933 * testsuite/30_threads/shared_lock/locking/clock_neg.cc: New test.
934 * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
936 * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Qualify
937 slow_clock with new namespace.
938 * testsuite/30_threads/timed_mutex/try_lock_until/4.cc: Likewise.
939 * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc: New
941 * testsuite/30_threads/unique_lock/locking/clock_neg.cc: New test.
942 * testsuite/std/time/traits/is_clock.cc: New test.
943 * testsuite/util/slow_clock.h (slow_clock): Move to __gnu_test
946 2020-03-21 Jonathan Wakely <jwakely@redhat.com>
949 * include/experimental/bits/fs_path.h (path::generic_string<C,T,A>()):
950 * testsuite/experimental/filesystem/path/generic/generic_string.cc:
951 Improve test coverage.
954 * include/bits/fs_path.h (path::_S_str_convert): Replace first
955 parameter with basic_string_view so that strings with different
956 allocators can be accepted.
957 (path::generic_string<C,T,A>()): Use basic_string object that uses the
958 right allocator type.
959 * testsuite/27_io/filesystem/path/generic/94242.cc: New test.
960 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Improve
963 2020-03-18 Jonathan Wakely <jwakely@redhat.com>
966 * include/std/type_traits (__is_nt_default_constructible_atom): Remove.
967 (__is_nt_default_constructible_impl): Remove.
968 (__is_nothrow_default_constructible_impl): Remove.
969 (__is_nt_constructible_impl): Add bool template parameter. Adjust
970 partial specializations.
971 (__is_nothrow_constructible_impl): Replace class template with alias
973 (is_nothrow_default_constructible): Derive from alias template
974 __is_nothrow_constructible_impl instead of
975 __is_nothrow_default_constructible_impl.
976 * testsuite/20_util/is_nothrow_constructible/94003.cc: New test.
978 * include/std/stop_token (stop_token::_Stop_state_ref): Define
979 comparison operators explicitly if the compiler won't synthesize them.
981 * include/bits/stl_algobase.h (__lexicographical_compare_aux): Check
982 __cpp_lib_concepts before using iter_reference_t.
983 * include/bits/stream_iterator.h (istream_iterator): Check
984 __cpp_lib_concepts before using default_sentinel_t.
985 * include/bits/streambuf_iterator.h (istreambuf_iterator): Likewise.
988 * include/experimental/executor (executor::executor(Executor)): Call
989 make_shared directly instead of _M_create. Create _Tgt1 object.
990 (executor::executor(allocator_arg_t, const ProtoAlloc&, Executor)):
991 Call allocate_shared directly instead of _M_create. Create _Tgt2
993 (executor::target_type): Add cast needed for new _Tgt interface.
994 (executor::target): Define when RTTI is disabled. Use _Tgt::_M_func.
995 (executor::_Tgt): Define the same interface whether RTTI is enabled or
997 (executor::_Tgt::target_type, executor::_Tgt::target): Do not use
998 std::type_info in the interface.
999 (executor::_Tgt::_M_func): Add data member.
1000 (executor::_TgtImpl): Replace with _Tgt1 and _Tgt2 class templates.
1001 (executor::_Tgt1::_S_func): Define function to access target without
1003 (executor::_M_create): Remove.
1004 (operator==, operator!=): Simplify comparisons for executor.
1005 * include/experimental/socket (is_error_code_enum<socket_errc>):
1006 Define specialization before use.
1007 * testsuite/experimental/net/executor/1.cc: New test.
1009 2020-03-16 Jonathan Wakely <jwakely@redhat.com>
1012 * include/experimental/executor (service_already_exists): Add default
1013 constructor. Declare make_service to be a friend.
1014 * testsuite/experimental/net/execution_context/make_service.cc: New
1017 2020-03-12 Jonathan Wakely <jwakely@redhat.com>
1019 * testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Do not pass
1020 a null pointer to functions with nonnull(1) attribute.
1022 2020-03-11 Patrick Palka <ppalka@redhat.com>
1024 * include/std/ranges (split_view::_OuterIter::_OuterIter): Typo fix,
1025 'address' -> 'std::__addressof'.
1026 * testsuite/std/ranges/adaptors/split.cc: Test taking the split_view of
1027 a non-forward input_range.
1028 * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Make
1029 default constructor protected instead of deleted, like with
1030 input_iterator_wrapper.
1031 (test_range::iterator): Add comment explaining that this type is used
1032 only when the underlying wrapper is input_iterator_wrapper or
1033 output_iterator_wrapper. Remove delegating defaulted constructor so
1034 that the inherited default constructor is used instead.
1036 LWG 3286 ranges::size is not required to be valid after a call to
1037 ranges::begin on an input range
1038 * include/std/ranges (subrange::subrange): Split single-argument
1039 constructor into two, one constrained by _S_store_size and another by
1041 (take_view::begin): Call size() before calling ranges::begin(_M_base).
1042 * testsuite/std/ranges/adaptors/lwg3286.cc: New test.
1043 * testsuite/std/ranges/subrange/lwg3286.cc: New test.
1045 2020-03-10 Jonathan Wakely <jwakely@redhat.com>
1047 * include/std/ranges (split_view::_OuterIter::__at_end): Use __current
1048 instead of _M_current.
1049 (split_view::_OuterIter::operator++): Likewise.
1051 * include/std/ranges (transform_view::_Iterator::__iter_move): Remove.
1052 (transform_view::_Iterator::operator*): Add noexcept-specifier.
1053 (transform_view::_Iterator::iter_move): Inline __iter_move body here.
1054 (split_view::_OuterIter::__current): Add noexcept.
1055 (split_view::_InnerIter::__iter_swap): Remove.
1056 (split_view::_InnerIter::__iter_move): Remove.
1057 (split_view::_InnerIter::_M_i_current): New accessors.
1058 (split_view::_InnerIter::__at_end): Use _M_i_current().
1059 (split_view::_InnerIter::operator*): Likewise.
1060 (split_view::_InnerIter::operator++): Likewise.
1061 (iter_move(const _InnerIter&)): Likewise.
1062 (iter_swap(const _InnerIter&, const _InnerIter&)): Likewise.
1063 * testsuite/std/ranges/adaptors/split.cc: Check noexcept-specifier
1064 for iter_move and iter_swap on split_view's inner iterator.
1067 * include/std/ranges (ranges::transform_view::_Iterator::iter_move):
1068 Change expression in noexcept-specifier to match function body.
1070 * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Add
1071 comment explaining multiple dg-do directives.
1072 * testsuite/24_iterators/ostream_iterator/1.cc: Fix do-do directive
1073 so test is run as well as compiled.
1075 2020-03-09 Jonathan Wakely <jwakely@redhat.com>
1078 * src/c++17/fs_path.cc (path::operator+=(const path&)): Add kluge to
1079 handle concatenations that change the type of the first component.
1080 (path::operator+=(basic_string_view<value_type>)): Likewise.
1081 * testsuite/27_io/filesystem/path/concat/94063.cc: New test.
1083 2020-03-06 Patrick Palka <ppalka@redhat.com>
1085 * include/std/ranges (join_view::_Sentinel<_Const>): Befriend
1086 join_view::_Sentinel<!_Const>.
1087 * testsuite/std/ranges/adaptors/join.cc: Augment test.
1090 * include/bits/range_access.h (__cust_access::_Empty::operator()):
1091 Declare return type to be bool instead of auto.
1092 * testsuite/std/ranges/adaptors/93978.cc: New test.
1094 2020-03-06 Jonathan Wakely <jwakely@redhat.com>
1097 * include/std/shared_mutex [!PTHREAD_RWLOCK_INITIALIZER]
1098 (__shared_mutex_pthread::__shared_mutex_pthread()): Remove incorrect
1099 second argument to __glibcxx_rwlock_init.
1100 * testsuite/30_threads/shared_timed_mutex/94069.cc: New test.
1103 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Adjust
1104 test to not fail due to PR 94063.
1105 * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
1106 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
1108 2020-03-06 Andreas Krebbel <krebbel@linux.ibm.com>
1110 * src/c++11/system_error.cc: Omit the ENOTSUP case statement if it
1113 2020-03-05 Jonathan Wakely <jwakely@redhat.com>
1115 * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
1116 * testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
1117 * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
1118 * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
1119 for return value, and in comparison.
1120 * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
1123 * include/std/string_view: Include <bits/ostream_insert.h>.
1124 * testsuite/21_strings/basic_string_view/inserters/94051.cc: New test.
1126 2020-03-04 Jonathan Wakely <jwakely@redhat.com>
1128 * include/bits/cpp_type_traits.h (__memcpyable): Fix comment.
1130 2020-03-04 Patrick Palka <ppalka@redhat.com>
1133 * include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine
1134 condition for when to use memset, making sure to additionally check that
1135 the output pointer's value type is a non-volatile byte type. Instead of
1136 requiring that the fill type is a byte type, just require that it's an
1138 * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
1140 * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
1142 * testsuite/25_algorithms/fill/94013.cc: Uncomment part of test that was
1143 blocked by PR 94017.
1144 * testsuite/25_algorithms/fill/94017.cc: New test.
1145 * testsuite/25_algorithms/fill_n/94017.cc: New test.
1147 LWG 3355 The memory algorithms should support move-only input iterators
1149 * include/bits/ranges_uninitialized.h
1150 (__uninitialized_copy_fn::operator()): Use std::move to avoid attempting
1151 to copy __ifirst, which could be a move-only input iterator. Use
1152 operator- instead of ranges::distance to compute distance from a sized
1154 (__uninitialized_copy_n_fn::operator()): Likewise.
1155 (__uninitialized_move_fn::operator()): Likewise.
1156 (__uninitialized_move_n_fn::operator()): Likewise.
1157 (__uninitialized_destroy_fn::operator()): Use std::move to avoid
1158 attempting to copy __first.
1159 (__uninitialized_destroy_n_fn::operator()): Likewise.
1160 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1162 * .../specialized_algorithms/uninitialized_copy/constrained.cc:
1164 * .../specialized_algorithms/uninitialized_move/constrained.cc:
1167 * testsuite/util/testsuite_iterators.h (test_range::get_iterator): Make
1168 protected instead of private.
1169 (test_sized_range_sized_sent): New.
1171 * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy):
1172 New testsuite iterator.
1173 * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it.
1174 * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
1176 * include/bits/ranges_uninitialized.h
1177 (uninitialized_copy_fn::operator()): Pass a reference type as the first
1178 argument to is_nothrow_assignable_v.
1179 (uninitialized_copy_fn::operator()): Likewise.
1180 (uninitialized_move_fn::operator()): Likewise. Return an in_out_result
1181 with the input iterator stripped of its move_iterator.
1182 (uninitialized_move_n_fn::operator()): Likewise.
1183 (uninitialized_fill_fn::operator()): Pass a reference type as the first
1184 argument to is_nothrow_assignable_v.
1185 (uninitialized_fill_n_fn::operator()): Likewise.
1187 2020-03-03 Jonathan Wakely <jwakely@redhat.com>
1190 * include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New
1191 traits to control when to use memmove and memcmp optimizations.
1192 (__is_nonvolatile_trivially_copyable): New helper trait.
1193 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not
1194 use memcmp optimization with volatile data.
1195 * include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable.
1196 (__copy_or_move, __copy_or_move_backward): Use __memcpyable.
1197 * include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable.
1198 (__copy_move_backward_a2): Likewise.
1199 (__equal_aux1): Use __memcmpable.
1200 (__lexicographical_compare_aux): Do not use memcmp optimization with
1202 * testsuite/25_algorithms/copy/94013.cc: New test.
1203 * testsuite/25_algorithms/copy_backward/94013.cc: New test.
1204 * testsuite/25_algorithms/equal/94013.cc: New test.
1205 * testsuite/25_algorithms/fill/94013.cc: New test.
1206 * testsuite/25_algorithms/lexicographical_compare/94013.cc: New test.
1207 * testsuite/25_algorithms/move/94013.cc: New test.
1208 * testsuite/25_algorithms/move_backward/94013.cc: New test.
1210 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
1211 Avoid redundant iterator comparisons (LWG 3410).
1213 2020-03-02 Jonathan Wakely <jwakely@redhat.com>
1216 * include/bits/stl_algobase.h (__memcmp): Allow pointer types to
1218 * testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test.
1220 * include/std/ranges (__detail::__maybe_empty_t): Rename to
1222 (__adaptor::_RangeAdaptor, join_view, split_view): Use new name.
1224 * include/bits/ranges_algo.h (shift_right): Add 'typename' to
1227 2020-03-01 H.J. Lu <hongjiu.lu@intel.com>
1229 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
1231 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1233 * testsuite/17_intro/headers/c++1998/charset.cc: Skip on *-*-hpux*.
1234 * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
1235 * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
1236 * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
1237 * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
1239 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
1240 Add libatomic option.
1241 * testsuite/30_threads/jthread/jthread.cc: Likewise.
1243 2020-02-29 François Dumont <fdumont@gcc.gnu.org>
1245 * include/bits/stl_algo.h
1246 (__find_if, __count_if, __is_permutation, std::is_permutation): Move...
1247 * include/bits/stl_algobase.h: ...here.
1248 * include/bits/hashtable_policy.h: Remove <bits/stl_algo.h> include.
1250 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1252 * testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
1254 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
1256 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
1257 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
1258 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
1259 * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
1260 * testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
1261 * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
1262 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
1266 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
1268 2020-02-28 Patrick Palka <ppalka@redhat.com>
1271 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
1272 Fix condition for when to use memcmp, making it consistent with the
1273 corresponding condition used in std::lexicographical_compare.
1274 * testsuite/25_algorithms/lexicographical_compare/93972.cc: New test.
1276 * testsuite/26_numerics/headers/numeric/synopsis.cc: Add signatures for
1277 functions introduced in C++11, C++17 and C++2a. Add 'constexpr' to
1278 existing signatures for C++2a.
1280 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1282 * testsuite/24_iterators/range_operations/advance_debug_neg.cc: Run
1283 test instead of just compiling it.
1285 2020-02-28 Patrick Palka <ppalka@redhat.com>
1287 * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to false
1288 whenever the underlying range models common_range.
1290 * include/std/ranges (__detail::_CachedPosition): New struct.
1291 (views::filter_view::_S_needs_cached_begin): New member variable.
1292 (views::filter_view::_M_cached_begin): New member variable.
1293 (views::filter_view::begin): Use _M_cached_begin to cache its
1295 (views::drop_view::_S_needs_cached_begin): New static member variable.
1296 (views::drop_view::_M_cached_begin): New member variable.
1297 (views::drop_view::begin): Use _M_cached_begin to cache its result
1298 when _S_needs_cached_begin.
1299 (views::drop_while_view::_M_cached_begin): New member variable.
1300 (views::drop_while_view::begin): Use _M_cached_begin to cache its
1302 (views::reverse_view::_S_needs_cached_begin): New static member
1304 (views::reverse_view::_M_cached_begin): New member variable.
1305 (views::reverse_view::begin): Use _M_cached_begin to cache its result
1306 when _S_needs_cached_begin.
1307 * testsuite/std/ranges/adaptors/drop.cc: Augment test to check that
1308 drop_view::begin caches its result.
1309 * testsuite/std/ranges/adaptors/drop_while.cc: Augment test to check
1310 that drop_while_view::begin caches its result.
1311 * testsuite/std/ranges/adaptors/filter.cc: Augment test to check that
1312 filter_view::begin caches its result.
1313 * testsuite/std/ranges/adaptors/reverse.cc: Augment test to check that
1314 reverse_view::begin caches its result.
1316 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1318 * testsuite/27_io/filesystem/operations/last_write_time.cc: Fixes for
1319 filesystems that silently truncate timestamps.
1320 * testsuite/experimental/filesystem/operations/last_write_time.cc:
1323 * testsuite/21_strings/basic_string/cons/char/1.cc: Disable
1324 -Wstringop-overflow warnings.
1326 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1328 * testsuite/lib/libstdc++.exp (v3_target_compile): Add
1329 -fdiagnostics-urls=never to options.
1331 2020-02-27 Patrick Palka <ppalka@redhat.com>
1333 * include/std/ranges (transform_view::_Iterator<_Const>): Befriend
1335 (transform_view::_Sentinel<_Const>): Befriend _Sentinel<!_Const>.
1336 (take_view::_Sentinel<_Const>): Likewise.
1337 (take_while_view::_Sentinel<_Const>): Likewise.
1338 (split_view::_OuterIter<_Const>): Befriend _OuterIter<!_Const>.
1339 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1340 * testsuite/std/ranges/adaptors/take.cc: Augment test.
1341 * testsuite/std/ranges/adaptors/take_while.cc: Augment test.
1342 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1344 * testsuite/25_algorithms/copy/constrained.cc: Don't assume that the
1345 base() of a vector<>::iterator is a pointer.
1346 * testsuite/25_algorithms/copy_backward/constrained.cc: Likewise.
1347 * testsuite/25_algorithms/move/constrained.cc: Likewise.
1348 * testsuite/25_algorithms/move_backward/constrained.cc: Likewise.
1349 * testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data()
1351 * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
1352 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise.
1353 * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
1354 * testsuite/25_algorithms/sort/constrained.cc: Likewise.
1355 * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
1357 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1359 * include/debug/array (operator<=>): Define for C++20.
1360 * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
1361 Adjust dg-error line numbers.
1362 * testsuite/23_containers/array/tuple_interface/
1363 tuple_element_debug_neg.cc: Likewise.
1365 * testsuite/23_containers/span/back_assert_neg.cc: Add #undef before
1366 defining _GLIBCXX_ASSERTIONS.
1367 * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
1368 * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
1369 * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
1370 * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
1371 * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
1372 * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
1373 * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise.
1374 * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise.
1375 * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise.
1376 * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise.
1377 * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise.
1378 * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
1380 * include/debug/string (__gnu_debug::basic_string::insert): Fix for
1381 C++98 where the member function of the base class returns void.
1383 * testsuite/util/testsuite_iterators.h (forward_iterator_wrapper): Add
1384 equality comparisons that support value-initialized iterators.
1386 * include/bits/boost_concept_check.h (__function_requires): Add
1387 _GLIBCXX14_CONSTEXPR.
1388 * testsuite/25_algorithms/min/concept_checks.cc: New test.
1390 2020-02-26 Patrick Palka <ppalka@redhat.com>
1393 * include/std/ranges (split_view::_InnerIter::operator==): Compare
1394 the operands' _M_i rather than their _M_i.current().
1395 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1397 P1645R1 constexpr for <numeric> algorithms
1398 * include/bits/stl_numeric.h (iota, accumulate, inner_product,
1399 partial_sum, adjacent_difference): Make conditionally constexpr for
1401 * include/std/numeric (__cpp_lib_constexpr_numeric): Define this feature
1403 (reduce, transform_reduce, exclusive_scan, inclusive_scan,
1404 transform_exclusive_scan, transform_inclusive_scan): Make conditionally
1405 constexpr for C++20.
1406 * include/std/version (__cpp_lib_constexpr_numeric): Define.
1407 * testsuite/26_numerics/accumulate/constexpr.cc: New test.
1408 * testsuite/26_numerics/adjacent_difference/constexpr.cc: Likewise.
1409 * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
1410 * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
1411 * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
1412 * testsuite/26_numerics/iota/constexpr.cc: Likewise.
1413 * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
1414 * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
1415 * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc: Likewise.
1416 * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc: Likewise.
1417 * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
1419 2020-02-26 Jonathan Wakely <jwakely@redhat.com>
1421 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Declare
1422 variables in smaller scope and avoid calling ranges::distance when we
1423 know they are pointers. Remove statically-unreachable use of
1424 __builtin_unreachable().
1425 * include/bits/stl_algobase.h (__lexicographical_compare::__lc):
1428 * include/std/ranges (__detail::__maybe_empty_t): Define new helper
1430 (__detail::__maybe_const_t): Likewise.
1431 (__adaptor::_RangeAdaptor): Use __maybe_empty_t.
1432 (transform_view, take_view, take_while_view, elements_view): Use
1434 (join_view, split_view): Use both.
1436 2020-02-25 Patrick Palka <ppalka@redhat.com>
1438 LWG 3397 basic_istream_view::iterator should not provide
1440 * include/std/ranges (basic_istream_view:_Iterator::iterator_category):
1442 (basic_istream_view:_Iterator::iterator_concept): ... this.
1443 * testsuite/std/ranges/istream_view.cc: Augment test.
1445 LWG 3325 Constrain return type of transformation function for
1447 * include/std/ranges (transform_view): Constrain the return type of the
1448 transformation function as per LWG 3325.
1449 * testsuite/std/ranges/adaptors/lwg3325_neg.cc: New test.
1451 LWG 3313 join_view::_Iterator::operator-- is incorrectly constrained
1452 * include/std/ranges (join_view::_Iterator::operator--): Require that
1453 range_reference_t<_Base> models common_range.
1454 * testsuite/std/ranges/adaptors/lwg3313_neg.cc: New test.
1456 LWG 3301 transform_view::_Iterator has incorrect iterator_category
1457 * include/std/ranges (transform_view::_Iterator::_S_iter_cat): Adjust
1458 determination of iterator_category as per LWG 3301.
1459 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1461 LWG 3292 iota_view is under-constrained
1462 * include/std/ranges (iota_view): Require that _Winc models semiregular
1464 * testsuite/std/ranges/iota/lwg3292_neg.cc: New test.
1466 2020-02-25 Jonathan Wakely <jwakely@redhat.com>
1468 * include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove
1469 during constant evaluation. Call __builtin_memmove directly instead of
1471 (__copy_or_move_backward): Likewise.
1472 * include/bits/stl_algobase.h (__memmove): Remove.
1473 (__copy_move<M, true, random_access_iterator_tag>::__copy_m)
1474 (__copy_move_backward<M, true, random_access_iterator_tag>::__copy_m):
1475 Use __builtin_memmove directly instead of __memmove.
1476 (__copy_move_a2): Do not use memmove during constant evaluation.
1477 (__copy_move_backward_a2): Use _IsMove constant to select correct
1478 __copy_move_backward specialization.
1479 * testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies
1480 begin turned into moves during constant evaluation.
1482 * testsuite/25_algorithms/move_backward/93872.cc: Add test left out of
1486 * include/bits/stl_algobase.h (__memmove): Cast away const before
1487 doing move assignment.
1488 * testsuite/25_algorithms/move/93872.cc: New test.
1489 * testsuite/25_algorithms/move_backward/93872.cc: New test.
1491 2020-02-24 Patrick Palka <ppalka@redhat.com>
1494 * include/bits/ranges_algobase.h (__copy_or_move,
1495 __copy_or_move_backward): Don't inspect the iter_value_t of the output
1496 iterator, instead inspect its iterator_traits directly.
1497 * include/bits/stl_iterator.h (back_insert_iterator::container):
1498 Conditionally initialize.
1499 (back_insert_iterator::difference_type): Conditionally define.
1500 (back_insert_iterator::back_insert_iterator): Conditionally define this
1501 default constructor.
1502 (front_insert_iterator::container): Conditionally initialize.
1503 (front_insert_iterator::difference_type): Conditionally define.
1504 (front_insert_iterator::front_insert_iterator): Conditionally define
1505 this default constructor.
1506 * 24_iterators/back_insert_iterator/pr93884.cc: New test.
1507 * 24_iterators/front_insert_iterator/pr93884.cc: New test.
1509 P0769R2 Add shift to <algorithm>
1510 * include/bits/ranges_algo.h (shift_left, shift_right): New.
1511 * testsuite/25_algorithms/shift_left/1.cc: New test.
1512 * testsuite/25_algorithms/shift_right/1.cc: New test.
1514 2020-02-24 Jonathan Wakely <jwakely@redhat.com>
1516 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1517 Make noexcept-specifier conditional.
1518 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: Check
1521 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1523 (operator==(istream_iterator, default_sentinel_t)): Add operator.
1524 (ostream_iterator::difference_type): Define to ptrdiff_t for C++20.
1525 * include/bits/streambuf_iterator.h
1526 (istreambuf_iterator(default_sentinel_t)): Add constructor.
1527 (operator==(istreambuf_iterator, default_sentinel_t)): Add operator.
1528 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
1530 * testsuite/24_iterators/istream_iterator/sentinel.cc: New test.
1531 * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
1533 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
1535 * include/std/ranges (__deep_const_range, __enable_view_impl): Remove.
1536 (ranges::enable_view): Simplify (LWG 3326).
1537 * include/bits/range_access.h (ranges::enable_view): Declare.
1538 * include/bits/regex.h (__enable_view_impl): Remove partial
1540 * include/bits/stl_multiset.h (__enable_view_impl): Likewise.
1541 * include/bits/stl_set.h (__enable_view_impl): Likewise.
1542 * include/bits/unordered_set.h (__enable_view_impl): Likewise.
1543 * include/debug/multiset.h (__enable_view_impl): Likewise.
1544 * include/debug/set.h (__enable_view_impl): Likewise.
1545 * include/debug/unordered_set (__enable_view_impl): Likewise.
1546 * include/experimental/string_view (ranges::enable_view): Define
1547 partial specialization.
1548 * include/std/span (ranges::enable_view): Likewise.
1549 * include/std/string_view (ranges::enable_view): Likewise.
1550 * testsuite/std/ranges/view.cc: Check satisfaction of updated concept.
1552 2020-02-21 Jonathan Wakely <jwakely@redhat.com>
1554 * include/std/optional (operator<=>(optional<T>, optional<U>))
1555 (operator<=>(optional<T>, nullopt), operator<=>(optional<T>, U)):
1557 * include/std/tuple (__tuple_cmp): New helper function for <=>.
1558 (operator<=>(tuple<T...>, tuple<U>...)): Define for C++20.
1559 * include/std/variant (operator<=>(variant<T...>, variant<T...>))
1560 (operator<=>(monostate, monostate)): Define for C++20.
1561 * testsuite/20_util/optional/relops/three_way.cc: New test.
1562 * testsuite/20_util/tuple/comparison_operators/three_way.cc: New test.
1563 * testsuite/20_util/variant/89851.cc: Move to ...
1564 * testsuite/20_util/variant/relops/89851.cc: ... here.
1565 * testsuite/20_util/variant/90008.cc: Move to ...
1566 * testsuite/20_util/variant/relops/90008.cc: ... here.
1567 * testsuite/20_util/variant/relops/three_way.cc: New test.
1569 2020-02-20 Patrick Palka <ppalka@redhat.com>
1571 * include/std/ranges (views::__adaptor::__maybe_refwrap): New utility
1573 (views::__adaptor::_RangeAdaptor::operator()): Add comments. Use
1574 __maybe_refwrap to capture lvalue references by reference, and then use
1575 unwrap_reference_t to forward the by-reference captures as references.
1576 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1577 * testsuite/std/ranges/adaptors/split_neg.cc: New test.
1579 * include/std/ranges (iota_view): Forward declare _Sentinel.
1580 (iota_view::_Iterator): Befriend _Sentinel.
1581 (iota_view::_Sentinel::_M_equal): New member function.
1582 (iota_view::_Sentinel::operator==): Use it.
1583 (views::_Iota::operator()): Forward __f using the correct type.
1584 * testsuite/std/ranges/access/ssize.cc (test06): Don't call views::iota
1585 with integers of different signedness, to appease iota_view's deduction
1587 * testsuite/std/ranges/iota/iota_view.cc: Augment test.
1589 2020-02-20 Jonathan Wakely <jwakely@redhat.com>
1591 * include/bits/range_access.h (ranges::begin): Reject array of
1593 (ranges::end, ranges::size): Require arrays to be bounded.
1594 (ranges::data): Require lvalue or borrowed_range.
1595 (ranges::iterator_t): Remove constraint.
1596 * testsuite/std/ranges/access/begin.cc: Do not check array of
1598 * testsuite/std/ranges/access/begin_neg.cc: New test.
1599 * testsuite/std/ranges/access/end_neg.cc: Adjust expected error.
1600 * testsuite/std/ranges/access/size_neg.cc: Adjust expected error.
1601 * testsuite/std/ranges/access/ssize.cc: Do not check array of
1604 * include/std/system_error (error_category::operator<=>)
1605 (operator<=>(const error_code&, const error_code&))
1606 (operator<=>(const error_condition&, const error_condition&)): Define
1608 * testsuite/19_diagnostics/error_category/operators/less.cc: New test.
1609 * testsuite/19_diagnostics/error_category/operators/three_way.cc: New
1611 * testsuite/19_diagnostics/error_code/operators/equal.cc: Remove
1613 * testsuite/19_diagnostics/error_code/operators/less.cc: New test.
1614 * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Remove
1616 * testsuite/19_diagnostics/error_code/operators/three_way.cc: New test.
1617 * testsuite/19_diagnostics/error_condition/operators/equal.cc: Remove
1619 * testsuite/19_diagnostics/error_condition/operators/less.cc: New test.
1620 * testsuite/19_diagnostics/error_condition/operators/not_equal.cc:
1621 Remove incorrect comment.
1622 * testsuite/19_diagnostics/error_condition/operators/three_way.cc: New
1625 * libsupc++/typeinfo (type_info::operator!=): Remove for C++20.
1627 * include/std/thread (thread::id::operator<=>): Define for C++20.
1628 * testsuite/30_threads/thread/id/70294.cc: Do not take addresses of
1629 functions in namespace std.
1630 * testsuite/30_threads/thread/id/operators_c++20.cc: New test.
1632 2020-02-19 Patrick Palka <ppalka@redhat.com>
1634 * testsuite/std/ranges/adaptors/split.cc (test03): Don't include the
1635 null terminator of the underlying string as part of the test_range.
1636 (main): Call test03.
1638 2020-02-19 Jonathan Wakely <jwakely@redhat.com>
1640 * include/bits/stl_iterator.h (common_iterator): Add copyable<I>
1641 requirement (LWG 3385).
1642 * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust
1643 expected declaration.
1645 * include/std/ranges (take_while_view, drop_view, drop_while_view)
1646 (elements_view:_Iterator): Initialize data members (LWG 3364).
1648 * libsupc++/compare (three_way_comparable): Remove always-false check
1649 that should have been removed with weak_equality (P1959R0).
1650 (three_way_comparable_with): Likewise. Reorder requirements (LWG 3360).
1652 * include/std/concepts (__detail::__partially_ordered_with): Move here
1654 (totally_ordered, totally_ordered_with): Use __partially_ordered_with
1655 to simplify definition (LWG 3331).
1656 * libsupc++/compare (__detail::__partially_ordered_with): Move to
1659 * include/std/concepts (totally_ordered_with): Remove redundant
1660 requirement (LWG 3329).
1662 * include/std/ranges (__detail::__convertible_to_non_slicing): New
1664 (__detail::__pair_like_convertible_to): Remove.
1665 (__detail::__pair_like_convertible_from): Add requirements for
1666 non-slicing conversions.
1667 (subrange): Constrain constructors with __convertible_to_non_slicing.
1668 Remove constructors from pair-like types. Add new deduction guide.
1669 * testsuite/std/ranges/subrange/lwg3282_neg.cc: New test.
1671 * include/bits/iterator_concepts.h (iter_move): Add declaration to
1672 prevent unqualified lookup finding a suitable declaration (LWG 3247).
1674 * include/std/memory_resource (polymorphic_allocator::allocate)
1675 (polymorphic_allocator::allocate_object): Change type of exception to
1676 bad_array_new_length (LWG 3237).
1677 * testsuite/20_util/polymorphic_allocator/lwg3237.cc: New test.
1679 * include/std/type_traits (__cpp_lib_unwrap_ref): Define (LWG 3348).
1680 * include/std/version (__cpp_lib_unwrap_ref): Likewise.
1681 * testsuite/20_util/unwrap_reference/1.cc: Check macro.
1682 * testsuite/20_util/unwrap_reference/3.cc: New test.
1684 * include/std/numeric (midpoint(T8, T*)): Do not check for complete
1685 type during overload resolution, use static assert instead (LWG 3200).
1686 * testsuite/26_numerics/midpoint/pointer.cc: Do not test with
1688 * testsuite/26_numerics/midpoint/pointer_neg.cc: New test.
1690 * include/std/span (span(T (&)[N])): Use non-deduced context to
1691 prevent first parameter from interfering with class template argument
1692 deduction (LWG 3369).
1693 * testsuite/23_containers/span/deduction.cc: Add missing 'const'.
1694 * testsuite/23_containers/span/lwg3255.cc: Check for construction from
1697 * include/std/span (span::const_iterator, span::const_reverse_iterator)
1698 (span::cbegin(), span::cend(), span::crbegin(), span::crend()):
1700 * testsuite/23_containers/span/everything.cc: Replace uses of cbegin
1702 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1704 * testsuite/20_util/specialized_algorithms/uninitialized_copy/
1705 constrained.cc: Likewise.
1706 * testsuite/20_util/specialized_algorithms/
1707 uninitialized_default_construct/constrained.cc: Likewise.
1708 * testsuite/20_util/specialized_algorithms/uninitialized_fill/
1709 constrained.cc: Likewise.
1710 * testsuite/20_util/specialized_algorithms/uninitialized_move/
1711 constrained.cc: Likewise.
1712 * testsuite/20_util/specialized_algorithms/
1713 uninitialized_value_construct/constrained.cc: Likewise.
1715 * include/bits/range_access.h (range_size_t): Define alias template.
1716 * include/std/ranges (all_view): Rename to views::all_t (LWG 3335).
1717 * testsuite/std/ranges/adaptors/filter.cc: Adjust to new name.
1719 * include/std/ranges (filter_view, transform_view, take_view)
1720 (join_view, split_view, reverse_view): Remove commented-out converting
1721 constructors (LWG 3280).
1723 * include/std/memory (uninitialized_construct_using_allocator): Use
1724 std::construct_at (LWG 3321).
1726 * include/std/memory_resource (polymorphic_allocator::allocate_bytes)
1727 (polymorphic_allocator::allocate_object)
1728 (polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304).
1730 LWG 3379. "safe" in several library names is misleading
1731 * include/bits/range_access.h (enable_safe_range): Rename to
1732 enable_borrowed_range.
1733 (__detail::__maybe_safe_range): Rename to __maybe_borrowed_range.
1734 (safe_range): Rename to borrowed_range.
1735 * include/bits/ranges_algo.h: Adjust to use new names.
1736 * include/bits/ranges_algobase.h: Likewise.
1737 * include/bits/ranges_uninitialized.h: Likewise.
1738 * include/std/ranges: Likewise.
1739 (safe_iterator_t): Rename to borrowed_iterator_t.
1740 (safe_subrange_t): Rename to borrowed_subrange_t.
1741 * include/std/span: Adjust to use new names.
1742 * include/std/string_view: Likewise.
1743 * include/experimental/string_view: Likewise.
1744 * testsuite/std/ranges/access/begin.cc: Likewise.
1745 * testsuite/std/ranges/access/cbegin.cc: Likewise.
1746 * testsuite/std/ranges/access/cdata.cc: Likewise.
1747 * testsuite/std/ranges/access/cend.cc: Likewise.
1748 * testsuite/std/ranges/access/crbegin.cc: Likewise.
1749 * testsuite/std/ranges/access/crend.cc: Likewise.
1750 * testsuite/std/ranges/access/data.cc: Likewise.
1751 * testsuite/std/ranges/access/end.cc: Likewise.
1752 * testsuite/std/ranges/access/rbegin.cc: Likewise.
1753 * testsuite/std/ranges/access/rend.cc: Likewise.
1754 * testsuite/std/ranges/safe_range.cc: Likewise.
1755 * testsuite/std/ranges/safe_range_types.cc: Likewise.
1756 * testsuite/util/testsuite_iterators.h: Likewise.
1758 * include/std/ranges (tuple_element<0, const subrange<I, S, K>>)
1759 (tuple_element<1, const subrange<I, S, K>>): Add partial
1760 specializations (LWG 3398).
1761 * testsuite/std/ranges/subrange/tuple_like.cc: New test.
1763 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1764 (__adjacent_find_fn, __remove_if_fn, __remove_copy_if_fn)
1765 (__unique_fn, __unique_copy_fn): Remove redundant conversions to bool.
1767 2020-02-18 Patrick Palka <ppalka@redhat.com>
1769 P1983R0 Wording for GB301, US296, US292, US291, and US283
1770 * include/std/ranges (filter_view::pred): New member function.
1771 (join_view::_Iterator::_Iterator): Remove now-redundant comment since
1772 P1983R0 fixes the highlighted issue in the same way.
1773 (join_view::_Iterator<_Const>): Add friend
1774 join_view::_Iterator<!_Const>.
1775 (join_view::_M_inner): Remove mutable specifier, effectively reverting
1776 the proposed wording changes of P3278.
1777 (join_view::begin): Refine the condition for when to return a const
1779 (split_view::_OuterIter::_OuterIter): Adjust constraints.
1780 * testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred
1783 2020-02-18 Jonathan Wakely <jwakely@redhat.com>
1786 * include/std/ranges (_RangeAdaptor): Add deduction guide.
1787 (filter_view::_Iterator): Add alias _Vp_iter and use in place of
1789 (filter_view::_Iterator::_S_iter_cat()): Add 'typename'.
1790 (transform_view::_Iterator): Add alias _Base_iter and use in place of
1792 (transform_view::_Iterator::_S_iter_cat()): Add 'typename'.
1793 (join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases.
1794 (join_view::_Iterator::_S_iter_cat()): Add 'typename'.
1795 (split_view::_InnerIter::_S_iter_cat()): Likewise.
1797 * testsuite/20_util/integer_comparisons/equal.cc: Fix invalid
1798 assumption that long is wider than int.
1799 * testsuite/20_util/integer_comparisons/greater_equal.cc: Likewise.
1800 * testsuite/20_util/integer_comparisons/less.cc: Likewise.
1801 * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
1802 * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
1804 P1976R2 Fixed-size span construction from dynamic range
1805 * include/std/span (__cpp_lib_span): Update value.
1806 (span(It, size_type), span(It, End)): Make conditionally explicit. Add
1808 (span(R&&), span(const span<OType, OExtent>&)): Likewise and relax
1810 (span::first<Count>(), span::last<Count>()): Use explicit type in
1812 (as_bytes, as_writable_bytes): Likewise.
1813 * include/std/version (__cpp_lib_span): Update value.
1814 * testsuite/23_containers/span/1.cc: Check new value.
1815 * testsuite/23_containers/span/2.cc: Check new value.
1816 * testsuite/23_containers/span/explicit.cc: New test.
1818 * include/std/span (span::__is_compatible_array): Simplify alias
1819 template by using requires-clause.
1820 (span::__is_compatible_ref): New alias template for constraining
1822 (span::__is_compatible_iterator, span::__is_compatible_range): Remove.
1823 (span(It, size_type), span(It, End)): Use __is_compatible_ref.
1824 (span(T(&)[N], span(array<T, N>&), span(const array<T, N>&)): Remove
1825 redundant parentheses.
1826 (span(R&&)): Add missing constraints.
1828 * include/std/span (span): Reorder members and rename template
1829 parameters to match declarations in the C++2a working paper.
1831 P2116R0 Remove tuple-like protocol support from fixed-extent span
1832 * include/std/span (get, tuple_size, tuple_element): Remove.
1833 * testsuite/23_containers/span/everything.cc: Remove checks for
1835 * testsuite/23_containers/span/get_neg.cc: Remove.
1836 * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove.
1837 * testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove.
1838 * testsuite/23_containers/span/tuple_size_neg.cc: Remove.
1840 2020-02-17 Patrick Palka <ppalka@redhat.com>
1842 P2106R0 Alternative wording for GB315 and GB316
1843 * include/bits/ranges_algo.h (in_fun_result): New.
1844 (for_each_result, for_each_n_result): Change into an alias of
1846 (in_in_result): New.
1847 (mismatch_result): Change into an alias of in_in_result.
1848 (copy_if_result): Change into an alias of in_out_result.
1849 (swap_ranges_result): Change into an alias of in_in_result.
1850 (unary_transform_result): Change into an alias of in_out_result.
1851 (in_in_out_result): New.
1852 (binary_transform_result): Change into an alias of in_in_out_result.
1853 (replace_copy_result, replace_copy_if_result, remove_copy_if_result,
1854 remove_copy_result, unique_copy_result, reverse_copy_result,
1855 rotate_copy_result, partial_sort_copy_result): Change into an alias of
1857 (in_out_out_result): New.
1858 (partition_copy_result, merge_result): Change into an alias of
1860 (set_union_result, set_intersection_result): Change into an alias of
1862 (set_difference_result): Change into an alias of in_out_result.
1863 (set_symmetric_difference): Change into an alias of in_in_out_result.
1864 (min_max_result): New.
1865 (minmax_result, minmax_element_result): Change into an alias of
1867 (in_found_result): New.
1868 (next_permutation_result, prev_permutation_result): Change into an alias
1870 (__next_permutation_fn::operator(), __prev_permutation_fn::operator()):
1871 Adjust following changes to next_permutation_result and
1872 prev_permutation_result.
1873 * include/bits/ranges_algobase.h (in_out_result): New.
1874 (copy_result, move_result, move_backward_result, copy_backward_result,
1875 copy_n_result): Change into an alias of in_out_result.
1876 * include/bits/ranges_uninitialized.h (uninitialized_copy_result,
1877 uninitialized_copy_n_result, uninitialized_move_result,
1878 uninitialized_move_n_result): Likewise.
1879 * testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of
1880 structured bindings.
1881 * testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise.
1883 P1243R4 Rangify new algorithms
1884 * include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn,
1885 for_each_n, __sample_fn, sample, __clamp_fn, clamp): New.
1886 * testsuite/25_algorithms/clamp/constrained.cc: New test.
1887 * testsuite/25_algorithms/for_each/constrained.cc: Augment test.
1888 * testsuite/25_algorithms/sample/constrained.cc: New test.
1890 2020-02-17 Jonathan Wakely <jwakely@redhat.com>
1892 P1964R2 Wording for boolean-testable
1893 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1894 (__adjacent_find_fn): Cast result of predicate to bool.
1895 * include/std/concepts (__boolean): Remove.
1896 (__detail::__boolean_testable_impl, __detail::__boolean_testable): Add
1897 new helper concepts.
1898 (__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with)
1899 (predicate): Use __boolean_testable instead of boolean.
1900 * libsupc++/compare (__detail::__partially_ordered, _Synth3way):
1903 P1970R2 Consistency for size() functions: Add ranges::ssize
1904 * include/bits/range_access.h (_SSize, ssize): Define for C++20.
1905 * testsuite/std/ranges/access/ssize.cc: New test.
1907 P1956R1 On the names of low-level bit manipulation functions
1908 * include/bits/hashtable_policy.h: Update comment.
1909 * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename.
1910 (ispow2, ceil2, floor2, log2p1): Likewise.
1911 (__cpp_lib_int_pow2): Add feature test macro.
1912 * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1.
1913 * include/std/memory (assume_aligned): Adjust use of ispow2.
1914 * include/std/version (__cpp_lib_int_pow2): Add.
1915 * libsupc++/new_opa.cc: Adjust use of __ispow2.
1916 * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1.
1917 * testsuite/17_intro/freestanding.cc: Adjust use of ispow2.
1918 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ...
1919 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here.
1920 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ...
1921 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here.
1922 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ...
1923 * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here.
1924 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ...
1925 * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here.
1926 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ...
1927 * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
1929 * include/std/charconv: Add comment.
1931 PR libstdc++/92546 (partial)
1932 * include/bits/random.h (uniform_random_bit_generator): Move definition
1933 to <bits/uniform_int_dist.h>.
1934 * include/bits/ranges_algo.h: Include <bits/uniform_int_dist.h> instead
1936 * include/bits/ranges_algobase.h: Do not include <cmath>.
1937 * include/bits/uniform_int_dist.h (uniform_random_bit_generator):
1939 * include/std/ranges: Do not include <limits>.
1940 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
1942 PR libstdc++/92546 (partial)
1943 * include/Makefile.am: Add new header.
1944 * include/Makefile.in: Regenerate.
1945 * include/bits/int_limits.h: New header.
1946 * include/bits/parse_numbers.h (__select_int::_Select_int): Replace
1947 numeric_limits with __detail::__int_limits.
1948 * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one)
1949 (__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1):
1951 * include/std/charconv (__to_chars_8, __from_chars_binary)
1952 (__from_chars_alpha_to_num, from_chars): Likewise.
1953 * include/std/memory_resource (polymorphic_allocator::allocate)
1954 (polymorphic_allocator::allocate_object): Likewise.
1955 * include/std/string_view (basic_string_view::_S_compare): Likewise.
1956 * include/std/utility (in_range): Likewise.
1957 * testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for
1958 extra error about incomplete type __int_limits<bool>.
1959 * testsuite/26_numerics/bit/bit.count/countl_one.cc: Include <limits>.
1960 * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
1961 * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
1962 * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
1963 * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
1964 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Likewise.
1965 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise.
1966 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1967 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1968 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1969 * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
1970 * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
1972 * python/libstdcxx/v6/printers.py (StdCmpCatPrinter.to_string): Update
1973 value for partial_ordering::unordered.
1975 * include/bits/iterator_concepts.h (indirectly_copyable_storable): Add
1976 const-qualified expression variations.
1977 * include/std/concepts (copyable): Likewise.
1979 * include/std/type_traits (__is_standard_integer): New helper trait.
1980 * include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater)
1981 (cmp_less_equal, cmp_greater_equal, in_range): Define for C++20.
1982 * include/std/version (__cpp_lib_integer_comparison_functions): Define.
1983 * testsuite/20_util/integer_comparisons/1.cc: New test.
1984 * testsuite/20_util/integer_comparisons/2.cc: New test.
1985 * testsuite/20_util/integer_comparisons/equal.cc: New test.
1986 * testsuite/20_util/integer_comparisons/equal_neg.cc: New test.
1987 * testsuite/20_util/integer_comparisons/greater_equal.cc: New test.
1988 * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test.
1989 * testsuite/20_util/integer_comparisons/greater_neg.cc: New test.
1990 * testsuite/20_util/integer_comparisons/in_range.cc: New test.
1991 * testsuite/20_util/integer_comparisons/in_range_neg.cc: New test.
1992 * testsuite/20_util/integer_comparisons/less.cc: New test.
1993 * testsuite/20_util/integer_comparisons/less_equal.cc: New test.
1994 * testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test.
1995 * testsuite/20_util/integer_comparisons/less_neg.cc: New test.
1996 * testsuite/20_util/integer_comparisons/not_equal.cc: New test.
1997 * testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test.
1999 2020-02-16 Patrick Palka <ppalka@redhat.com>
2001 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
2002 Move code after an early exit constexpr if to under an else branch.
2003 * include/bits/ranges_algobase.h (__equal_fn::operator()): Likewise.
2005 2020-02-15 Patrick Palka <ppalka@redhat.com>
2007 * include/bits/ranges_algo.h: Adjust whitespace and formatting.
2008 * include/bits/ranges_algobase.h: Likewise.
2009 * include/bits/ranges_uninitialized.h: Likewise.
2011 * include/bits/ranges_algo.h: (adjacent_find, all_of, any_of,
2012 binary_search, copy_if, count, count_if, equal_range, find, find_end,
2013 find_first_of, find_if, find_if_not, for_each, generate, generate_n,
2014 includes, inplace_merge, is_heap, is_heap_until, is_partitioned,
2015 is_permutation, is_sorted, is_sorted_until, lexicographical_compare,
2016 lower_bound, make_heap, max, max_element, merge, min, min_element,
2017 minmax, minmax_element, mismatch, next_permutation, none_of,
2018 nth_element, partial_sort, partial_sort_copy, partition, partition_copy,
2019 partition_point, pop_heap, prev_permutation, push_heap, remove,
2020 remove_copy, remove_copy_if, remove_if, replace, replace_copy,
2021 replace_copy_if, replace_if, reverse, reverse_copy, rotate, rotate_copy,
2022 search, search_n, set_difference, set_intersection,
2023 set_symmetric_difference, set_union, shuffle, sort, sort_heap,
2024 stable_partition, stable_sort, swap_ranges, transform, unique,
2025 unique_copy, upper_bound): Convert into function objects.
2026 * include/bits/ranges_algobase.h: (equal, copy, move, copy_n, fill_n,
2027 fill, move_backward, copy_backward): Likewise.
2028 * include/bits/ranges_uninitialized.h (uninitialized_default_construct,
2029 uninitialized_default_construct_n, uninitialized_value_construct,
2030 uninitialized_value_construct_n, uninitialized_copy,
2031 uninitialized_copy_n, uninitialized_move, uninitialized_move_n,
2032 uninitialized_fill, uninitialized_fill_n, construct_at, destroy_at,
2033 destroy, destroy_n): Likewise.
2035 * include/bits/ranges_algo.h (ranges::__find_end): Fold into ...
2036 (ranges::find_end): ... here.
2037 (ranges::__lexicographical_compare): Fold into ...
2038 (ranges::lexicographical_compare): ... here.
2039 * include/bits/ranges_algobase.h (ranges::__equal): Fold into ...
2040 (ranges::equal): ... here.
2042 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2044 * include/bits/erase_if.h (__cpp_lib_erase_if): Define to 202002L.
2045 * include/std/deque: Likewise.
2046 * include/std/forward_list: Likewise.
2047 * include/std/list: Likewise.
2048 * include/std/string: Likewise.
2049 * include/std/vector: Likewise.
2050 * include/std/version: Likewise.
2051 * testsuite/23_containers/deque/erasure.cc: Test for new value.
2052 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
2053 * testsuite/23_containers/list/erasure.cc: Likewise.
2054 * testsuite/23_containers/map/erasure.cc: Likewise.
2055 * testsuite/23_containers/set/erasure.cc: Likewise.
2056 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2057 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
2058 * testsuite/23_containers/vector/erasure.cc: Likewise.
2060 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2062 * include/bits/random.h (uniform_random_bit_generator): Require min()
2063 and max() to be constant expressions and min() to be less than max().
2064 * testsuite/26_numerics/random/concept.cc: Check additional cases.
2065 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
2067 2020-02-13 Patrick Palka <ppalka@redhat.com>
2069 * include/Makefile.am: Add <bits/ranges_uninitialized.h>.
2070 * include/Makefile.in: Regenerate.
2071 * include/bits/ranges_uninitialized.h: New header.
2072 * include/std/memory: Include it.
2073 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: New
2075 * .../uninitialized_copy/constrained.cc: New test.
2076 * .../uninitialized_default_construct/constrained.cc: New test.
2077 * .../uninitialized_fill/constrained.cc: New test.
2078 * .../uninitialized_move/constrained.cc: New test.
2079 * .../uninitialized_value_construct/constrained.cc: New test.
2081 * include/Makefile.am: Add bits/ranges_algobase.h
2082 * include/Makefile.in: Regenerate.
2083 * bits/ranges_algo.h: Include <bits/ranges_algobase.h> and refactor
2085 (__detail::__is_normal_iterator, __detail::is_reverse_iterator,
2086 __detail::__is_move_iterator, copy_result, move_result,
2087 __equal, equal, copy_result, move_result, move_backward_result,
2088 copy_backward_result, __copy_or_move_backward, __copy_or_move, copy,
2089 move, copy_backward, move_backward, copy_n_result, copy_n, fill_n,
2090 fill): Split out into ...
2091 * bits/range_algobase.h: ... this new header.
2093 2020-02-12 Patrick Palka <ppalka@redhat.com>
2095 LWG 3389 and LWG 3390
2096 * include/bits/stl_iterator.h (move_move_iterator): Use std::move when
2097 constructing the move_iterator with __i.
2098 (counted_iterator::counted_iterator): Use std::move when initializing
2100 * testsuite/24_iterators/counted_iterator/lwg3389.cc: New test.
2101 * testsuite/24_iterators/move_iterator/lwg3390.cc: New test.
2103 2020-02-12 Sandra Loosemore <sandra@codesourcery.com>
2108 * configure: Regenerated.
2110 2020-02-12 François Dumont <fdumont@gcc.gnu.org>
2112 * include/bits/hashtable.h
2113 (_Hashtable<>(_Hashtable&&, std::allocator_type&)): Add
2114 missing std namespace qualification to forward call.
2116 2020-02-09 Jonathan Wakely <jwakely@redhat.com>
2118 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Fix
2120 * testsuite/20_util/function_objects/range.cmp/less.ccL Likewise.
2122 * include/std/ranges: Fix non-ASCII characters in comment.
2124 * include/bits/range_cmp.h (__detail::__eq_builtin_ptr_cmp): Require
2125 equality comparison to be valid and return bool.
2126 (__detail::__less_builtin_ptr_cmp): Likewise for less-than comparison.
2127 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Check
2128 type with ambiguous conversion to fundamental types.
2129 * testsuite/20_util/function_objects/range.cmp/less.cc: Likewise.
2131 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2133 * include/bits/iterator_concepts.h (iter_difference_t, iter_value_t):
2135 (readable_traits): Rename to indirectly_readable_traits.
2136 (readable): Rename to indirectly_readable.
2137 (writable): Rename to indirectly_writable.
2138 (__detail::__iter_exchange_move): Do not use remove_reference_t.
2139 (indirectly_swappable): Adjust requires expression parameter types.
2141 * include/bits/ranges_algo.h (ranges::transform, ranges::replace)
2142 (ranges::replace_if, ranges::generate_n, ranges::generate)
2143 (ranges::remove): Use new name for writable.
2144 * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow):
2145 Use new name for readable.
2146 * include/ext/pointer.h (readable_traits<_Pointer_adapter<P>>): Use
2147 new name for readable_traits.
2148 * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise.
2149 * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for
2150 new definition of indirectly_readable.
2152 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Change
2153 to take parameters of common_iterator, instead of the common_iterator
2154 type itself. Fix argument for __common_iter_has_arrow constraint.
2155 (iterator_traits<common_iterator<I, S>>::pointer): Adjust.
2157 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2159 * include/std/ranges (iota_view): Add braces to prevent -Wempty-body
2161 (basic_istream_view::_Iterator::operator++()): Add missing return.
2163 2020-02-07 Patrick Palka <ppalka@redhat.com>
2165 * include/bits/ranges_algo.h: Remove extraneous &&.
2167 * include/std/ranges (ranges::__detail::__stream_extractable,
2168 ranges::basic_istream_view, ranges::istream_view): Define.
2169 * testsuite/std/ranges/istream_view: New test.
2171 Implement C++20 range adaptors
2172 * include/std/ranges: Include <bits/refwrap.h> and <tuple>.
2173 (subrange::_S_store_size): Mark as const instead of constexpr to
2174 avoid what seems to be a bug in GCC.
2175 (__detail::__box): Give it defaulted copy and move constructors.
2176 (ranges::views::_Single::operator()): Mark constexpr.
2177 (ranges::views::_Iota::operator()): Mark constexpr.
2178 (__detail::Empty): Define.
2179 (ranges::views::__closure::_RangeAdaptor,
2180 ranges::views::__closure::_RangeAdaptorClosure, ref_view, all_view,
2181 ranges::views::all, ranges::__detail::find_if,
2182 ranges::__detail::find_if_not, ranges::__detail::mismatch,
2183 ranges::detail::min, filter_view, ranges::views::filter, transform_view,
2184 ranges::views::transform, take_view, ranges::views::take,
2185 take_while_view, ranges::views::take_while, drop_view,
2186 ranges::views::drop, join_view, ranges::views::join,
2187 __detail::require_constant, __detail::tiny_range, split_view,
2188 ranges::views::split, ranges::views::_Counted, ranges::views::counted,
2189 common_view, ranges::views::common, reverse_view,
2190 ranges::views::reverse,
2191 ranges::views::__detail::__is_reversible_subrange,
2192 ranges::views::__detail::__is_reverse_view, reverse_view,
2193 ranges::views::reverse, __detail::__has_tuple_element, elements_view,
2194 ranges::views::elements, ranges::views::keys, ranges::views::values):
2196 (views): Alias for ranges::views.
2197 (tuple_size<ranges::subrange<>>, tuple_element<0, ranges::subrange>,
2198 tuple_element<1, ranges::subrange>): New partial specializations.
2199 * testsuite/std/ranges/adaptors/all.cc: New test.
2200 * testsuite/std/ranges/adaptors/common.cc: Likewise.
2201 * testsuite/std/ranges/adaptors/counted.cc: Likewise.
2202 * testsuite/std/ranges/adaptors/drop.cc: Likewise.
2203 * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
2204 * testsuite/std/ranges/adaptors/elements.cc: Likewise.
2205 * testsuite/std/ranges/adaptors/filter.cc: Likewise.
2206 * testsuite/std/ranges/adaptors/join.cc: Likewise.
2207 * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
2208 * testsuite/std/ranges/adaptors/split.cc: Likewise.
2209 * testsuite/std/ranges/adaptors/take.cc: Likewise.
2210 * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
2211 * testsuite/std/ranges/adaptors/transform.cc: Likewise.
2213 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2215 * libsupc++/compare (__cmp_cat::type): Define typedef for underlying
2216 type of enumerations and comparison category types.
2217 (__cmp_cat::_Ord, __cmp_cat::_Ncmp): Add underlying type.
2218 (__cmp_cat::_Ncmp::unordered): Change value to 2.
2219 (partial_ordering::_M_value, weak_ordering::_M_value)
2220 (strong_ordering::_M_value): Change type to __cmp_cat::type.
2221 (partial_ordering::_M_is_ordered): Remove data member.
2222 (partial_ordering): Use second bit of _M_value for unordered. Adjust
2223 comparison operators.
2224 (weak_ordering::operator partial_ordering): Simplify to remove
2226 (operator<=>(unspecified, weak_ordering)): Likewise.
2227 (strong_ordering::operator partial_ordering): Likewise.
2228 (strong_ordering::operator weak_ordering): Likewise.
2229 (operator<=>(unspecified, strong_ordering)): Likewise.
2230 * testsuite/18_support/comparisons/categories/partialord.cc: New test.
2231 * testsuite/18_support/comparisons/categories/strongord.cc: New test.
2232 * testsuite/18_support/comparisons/categories/weakord.cc: New test.
2234 * include/std/ranges (iota_view::_Iterator): Fix typo in name of
2235 __cpp_lib_three_way_comparison macro and use deduced return type for
2237 * testsuite/std/ranges/iota/iterator.cc: New test.
2239 2020-02-07 Patrick Palka <ppalka@redhat.com>
2240 Jonathan Wakely <jwakely@redhat.com>
2242 Implement C++20 constrained algorithms
2243 * include/Makefile.am: Add new header.
2244 * include/Makefile.in: Regenerate.
2245 * include/std/algorithm: Include <bits/ranges_algo.h>.
2246 * include/bits/ranges_algo.h: New file.
2247 * testsuite/25_algorithms/adjacent_find/constrained.cc: New test.
2248 * testsuite/25_algorithms/all_of/constrained.cc: New test.
2249 * testsuite/25_algorithms/any_of/constrained.cc: New test.
2250 * testsuite/25_algorithms/binary_search/constrained.cc: New test.
2251 * testsuite/25_algorithms/copy/constrained.cc: New test.
2252 * testsuite/25_algorithms/copy_backward/constrained.cc: New test.
2253 * testsuite/25_algorithms/copy_if/constrained.cc: New test.
2254 * testsuite/25_algorithms/copy_n/constrained.cc: New test.
2255 * testsuite/25_algorithms/count/constrained.cc: New test.
2256 * testsuite/25_algorithms/count_if/constrained.cc: New test.
2257 * testsuite/25_algorithms/equal/constrained.cc: New test.
2258 * testsuite/25_algorithms/equal_range/constrained.cc: New test.
2259 * testsuite/25_algorithms/fill/constrained.cc: New test.
2260 * testsuite/25_algorithms/fill_n/constrained.cc: New test.
2261 * testsuite/25_algorithms/find/constrained.cc: New test.
2262 * testsuite/25_algorithms/find_end/constrained.cc: New test.
2263 * testsuite/25_algorithms/find_first_of/constrained.cc: New test.
2264 * testsuite/25_algorithms/find_if/constrained.cc: New test.
2265 * testsuite/25_algorithms/find_if_not/constrained.cc: New test.
2266 * testsuite/25_algorithms/for_each/constrained.cc: New test.
2267 * testsuite/25_algorithms/generate/constrained.cc: New test.
2268 * testsuite/25_algorithms/generate_n/constrained.cc: New test.
2269 * testsuite/25_algorithms/heap/constrained.cc: New test.
2270 * testsuite/25_algorithms/includes/constrained.cc: New test.
2271 * testsuite/25_algorithms/inplace_merge/constrained.cc: New test.
2272 * testsuite/25_algorithms/is_partitioned/constrained.cc: New test.
2273 * testsuite/25_algorithms/is_permutation/constrained.cc: New test.
2274 * testsuite/25_algorithms/is_sorted/constrained.cc: New test.
2275 * testsuite/25_algorithms/is_sorted_until/constrained.cc: New test.
2276 * testsuite/25_algorithms/lexicographical_compare/constrained.cc: New
2278 * testsuite/25_algorithms/lower_bound/constrained.cc: New test.
2279 * testsuite/25_algorithms/max/constrained.cc: New test.
2280 * testsuite/25_algorithms/max_element/constrained.cc: New test.
2281 * testsuite/25_algorithms/merge/constrained.cc: New test.
2282 * testsuite/25_algorithms/min/constrained.cc: New test.
2283 * testsuite/25_algorithms/min_element/constrained.cc: New test.
2284 * testsuite/25_algorithms/minmax/constrained.cc: New test.
2285 * testsuite/25_algorithms/minmax_element/constrained.cc: New test.
2286 * testsuite/25_algorithms/mismatch/constrained.cc: New test.
2287 * testsuite/25_algorithms/move/constrained.cc: New test.
2288 * testsuite/25_algorithms/move_backward/constrained.cc: New test.
2289 * testsuite/25_algorithms/next_permutation/constrained.cc: New test.
2290 * testsuite/25_algorithms/none_of/constrained.cc: New test.
2291 * testsuite/25_algorithms/nth_element/constrained.cc: New test.
2292 * testsuite/25_algorithms/partial_sort/constrained.cc: New test.
2293 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test.
2294 * testsuite/25_algorithms/partition/constrained.cc: New test.
2295 * testsuite/25_algorithms/partition_copy/constrained.cc: New test.
2296 * testsuite/25_algorithms/partition_point/constrained.cc: New test.
2297 * testsuite/25_algorithms/prev_permutation/constrained.cc: New test.
2298 * testsuite/25_algorithms/remove/constrained.cc: New test.
2299 * testsuite/25_algorithms/remove_copy/constrained.cc: New test.
2300 * testsuite/25_algorithms/remove_copy_if/constrained.cc: New test.
2301 * testsuite/25_algorithms/remove_if/constrained.cc: New test.
2302 * testsuite/25_algorithms/replace/constrained.cc: New test.
2303 * testsuite/25_algorithms/replace_copy/constrained.cc: New test.
2304 * testsuite/25_algorithms/replace_copy_if/constrained.cc: New test.
2305 * testsuite/25_algorithms/replace_if/constrained.cc: New test.
2306 * testsuite/25_algorithms/reverse/constrained.cc: New test.
2307 * testsuite/25_algorithms/reverse_copy/constrained.cc: New test.
2308 * testsuite/25_algorithms/rotate/constrained.cc: New test.
2309 * testsuite/25_algorithms/rotate_copy/constrained.cc: New test.
2310 * testsuite/25_algorithms/search/constrained.cc: New test.
2311 * testsuite/25_algorithms/search_n/constrained.cc: New test.
2312 * testsuite/25_algorithms/set_difference/constrained.cc: New test.
2313 * testsuite/25_algorithms/set_intersection/constrained.cc: New test.
2314 * testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New
2316 * testsuite/25_algorithms/set_union/constrained.cc: New test.
2317 * testsuite/25_algorithms/shuffle/constrained.cc: New test.
2318 * testsuite/25_algorithms/sort/constrained.cc: New test.
2319 * testsuite/25_algorithms/stable_partition/constrained.cc: New test.
2320 * testsuite/25_algorithms/stable_sort/constrained.cc: New test.
2321 * testsuite/25_algorithms/swap_ranges/constrained.cc: New test.
2322 * testsuite/25_algorithms/transform/constrained.cc: New test.
2323 * testsuite/25_algorithms/unique/constrained.cc: New test.
2324 * testsuite/25_algorithms/unique_copy/constrained.cc: New test.
2325 * testsuite/25_algorithms/upper_bound/constrained.cc: New test.
2327 2020-02-06 Jonathan Wakely <jwakely@redhat.com>
2329 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Fix PR
2330 number in comment. Fix indentation.
2332 * include/bits/stl_algobase.h (__iter_swap, __iter_swap<true>): Remove
2333 redundant _GLIBCXX20_CONSTEXPR.
2335 * include/std/ranges (viewable_range): Replace decay_t with
2336 remove_cvref_t (LWG 3375).
2338 2020-02-05 Jonathan Wakely <jwakely@redhat.com>
2340 * include/bits/iterator_concepts.h (iter_reference_t)
2341 (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t):
2342 Remove workarounds for PR c++/67704.
2343 * testsuite/24_iterators/aliases.cc: New test.
2345 2020-02-05 Patrick Palka <ppalka@redhat.com>
2347 * include/bits/stl_iterator.h (move_iterator::move_iterator): Move __i
2348 when initializing _M_current.
2349 (move_iterator::base): Split into two overloads differing in
2350 ref-qualifiers as in P1207R4 for C++20.
2352 2020-02-04 Jonathan Wakely <jwakely@redhat.com>
2354 * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Un-define after
2358 * include/bits/unique_ptr.h (__uniq_ptr_impl::swap): Define.
2359 (unique_ptr::swap, unique_ptr<T[], D>::swap): Call it.
2360 * testsuite/20_util/unique_ptr/modifiers/93562.cc: New test.
2362 2020-02-01 Andrew Burgess <andrew.burgess@embecosm.com>
2364 * configure: Regenerate.
2366 2020-01-31 Patrick Palka <ppalka@redhat.com>
2368 * testsuite/24_iterators/range_operations/distance.cc: Do not assume
2369 test_range::end() returns the same type as test_range::begin().
2370 * testsuite/24_iterators/range_operations/next.cc: Likewise.
2371 * testsuite/24_iterators/range_operations/prev.cc: Likewise.
2372 * testsuite/util/testsuite_iterators.h (__gnu_test::test_range::end):
2373 Always return a sentinel<I>.
2375 2020-01-29 Jonathan Wakely <jwakely@redhat.com>
2378 * include/std/stop_token (stop_token::stop_possible()): Call new
2379 _M_stop_possible() function.
2380 (stop_token::stop_requested()): Do not use stop_possible().
2381 (stop_token::binary_semaphore): New class, as temporary stand-in for
2382 std::binary_semaphore.
2383 (stop_token::_Stop_cb::_M_callback): Add noexcept to type.
2384 (stop_token::_Stop_cb::_M_destroyed, stop_token::_Stop_cb::_M_done):
2385 New data members for symchronization with stop_callback destruction.
2386 (stop_token::_Stop_cb::_Stop_cb): Make non-template.
2387 (stop_token::_Stop_cb::_M_linked, stop_token::_Stop_cb::_S_execute):
2389 (stop_token::_Stop_cb::_M_run): New member function.
2390 (stop_token::_Stop_state::_M_stopped, stop_token::_Stop_state::_M_mtx):
2392 (stop_token::_Stop_state::_M_owners): New data member to track
2393 reference count for ownership.
2394 (stop_token::_Stop_state::_M_value): New data member combining a
2395 spinlock, the stop requested flag, and the reference count for
2396 associated stop_source objects.
2397 (stop_token::_Stop_state::_M_requester): New data member for
2398 synchronization with stop_callback destruction.
2399 (stop_token::_Stop_state::_M_stop_possible()): New member function.
2400 (stop_token::_Stop_state::_M_stop_requested()): Inspect relevant bit
2402 (stop_token::_Stop_state::_M_add_owner)
2403 (stop_token::_Stop_state::_M_release_ownership)
2404 (stop_token::_Stop_state::_M_add_ssrc)
2405 (stop_token::_Stop_state::_M_sub_ssrc): New member functions for
2406 updating reference counts.
2407 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2408 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2409 (stop_token::_Stop_state::_M_try_lock)
2410 (stop_token::_Stop_state::_M_try_lock_and_stop)
2411 (stop_token::_Stop_state::_M_do_try_lock): New member functions for
2413 (stop_token::_Stop_state::_M_request_stop): Use atomic operations to
2414 read and update state. Release lock while running callbacks. Use new
2415 data members to synchronize with callback destruction.
2416 (stop_token::_Stop_state::_M_remove_callback): Likewise.
2417 (stop_token::_Stop_state::_M_register_callback): Use atomic operations
2418 to read and update state.
2419 (stop_token::_Stop_state_ref): Handle type to manage _Stop_state,
2420 replacing shared_ptr.
2421 (stop_source::stop_source(const stop_source&)): Update reference count.
2422 (stop_source::operator=(const stop_source&)): Likewise.
2423 (stop_source::~stop_source()): Likewise.
2424 (stop_source::stop_source(stop_source&&)): Define as defaulted.
2425 (stop_source::operator=(stop_source&&)): Establish postcondition on
2427 (stop_callback): Enforce preconditions on template parameter. Replace
2428 base class with data member of new _Cb_impl type.
2429 (stop_callback::stop_callback(const stop_token&, Cb&&))
2430 (stop_callback::stop_callback(stop_token&&, Cb&&)): Fix TOCTTOU race.
2431 (stop_callback::_Cb_impl): New type wrapping _Callback member and
2432 defining the _S_execute member function.
2433 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: New
2435 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: New test.
2436 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: New test.
2437 * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
2439 * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: New
2441 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: New test.
2442 * testsuite/30_threads/stop_token/stop_source/assign.cc: New test.
2443 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: New
2446 * libsupc++/compare (__detail::__3way_builtin_ptr_cmp): Use
2447 three_way_comparable_with.
2448 (__detail::__3way_cmp_with): Remove workaround for fixed bug.
2449 (compare_three_way::operator()): Remove redundant constraint from
2451 (__detail::_Synth3way::operator()): Use three_way_comparable_with
2452 instead of workaround.
2453 * testsuite/18_support/comparisons/object/93479.cc: Prune extra
2454 output due to simplified constraints on compare_three_way::operator().
2457 * libsupc++/compare (__3way_builtin_ptr_cmp): Require <=> to be valid.
2458 * testsuite/18_support/comparisons/object/93479.cc: New test.
2460 * testsuite/std/ranges/access/end.cc: Do not assume test_range::end()
2461 returns the same type as test_range::begin(). Add comments.
2462 * testsuite/std/ranges/access/rbegin.cc: Likewise.
2463 * testsuite/std/ranges/access/rend.cc: Likewise.
2464 * testsuite/std/ranges/range.cc: Do not assume the sentinel for
2465 test_range is the same as its iterator type.
2466 * testsuite/util/testsuite_iterators.h (test_range::sentinel): Add
2467 operator- overloads to satisfy sized_sentinel_for when the iterator
2468 satisfies random_access_iterator.
2470 2020-01-28 Jonathan Wakely <jwakely@redhat.com>
2473 * include/bits/refwrap.h (reference_wrapper::operator()): Restrict
2474 static assertion to object types.
2477 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for
2478 clock_gettime instead of explicit glibc version check.
2479 * configure: Regenerate.
2481 2020-01-28 Martin Liska <mliska@suse.cz>
2484 * include/std/atomic: Fix typo.
2485 * include/std/optional: Likewise.
2487 2020-01-27 Andrew Burgess <andrew.burgess@embecosm.com>
2489 * configure: Regenerate.
2491 2020-01-27 Jonathan Wakely <jwakely@redhat.com>
2494 * include/std/span (span): Fix deduction guide.
2495 * testsuite/23_containers/span/deduction.cc: New test.
2497 2020-01-24 Jonathan Wakely <jwakely@redhat.com>
2499 * libsupc++/compare (__cmp_cat::_Eq): Remove enumeration type.
2500 (__cmp_cat::_Ord::equivalent): Add enumerator.
2501 (__cmp_cat::_Ord::_Less, __cmp_cat::_Ord::_Greater): Rename to less
2503 (partial_ordering, weak_ordering, strong_ordering): Remove
2504 constructors taking __cmp_cat::_Eq parameters. Use renamed
2507 2020-01-24 Maciej W. Rozycki <macro@wdc.com>
2509 * acinclude.m4: Handle `--with-toolexeclibdir='.
2510 * Makefile.in: Regenerate.
2511 * aclocal.m4: Regenerate.
2512 * configure: Regenerate.
2513 * doc/Makefile.in: Regenerate.
2514 * include/Makefile.in: Regenerate.
2515 * libsupc++/Makefile.in: Regenerate.
2516 * po/Makefile.in: Regenerate.
2517 * python/Makefile.in: Regenerate.
2518 * src/Makefile.in: Regenerate.
2519 * src/c++11/Makefile.in: Regenerate.
2520 * src/c++17/Makefile.in: Regenerate.
2521 * src/c++98/Makefile.in: Regenerate.
2522 * src/filesystem/Makefile.in: Regenerate.
2523 * testsuite/Makefile.in: Regenerate.
2525 2020-01-23 Alexandre Oliva <oliva@adacore.com>
2527 * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Reject macros.
2528 * configure: Rebuild.
2530 * testsuite/27_io/fpos/mbstate_t/1.cc: Zero-init mbstate_t.
2532 2020-01-23 Jonathan Wakely <jwakely@redhat.com>
2535 * include/Makefile.am (${host_builddir}/largefile-config.h): Simplify
2537 * include/Makefile.in: Regenerate.
2539 2020-01-20 Jonathan Wakely <jwakely@redhat.com>
2541 * doc/xml/faq.xml: Fix grammar.
2542 * doc/xml/manual/appendix_contributing.xml: Improve instructions.
2543 * doc/xml/manual/spine.xml: Update copyright years.
2544 * doc/html/*: Regenerate.
2546 2020-01-19 Eric S. Raymond <esr@thyrsus.com>
2548 * doc/xml/faq.xml: Update for SVN -> Git transition.
2549 * doc/xml/manual/appendix_contributing.xml: Likewise.
2550 * doc/xml/manual/status_cxx1998.xml: Likewise.
2551 * doc/xml/manual/status_cxx2011.xml: Likewise.
2552 * doc/xml/manual/status_cxx2014.xml: Likewise.
2553 * doc/xml/manual/status_cxx2017.xml: Likewise.
2554 * doc/xml/manual/status_cxx2020.xml: Likewise.
2555 * doc/xml/manual/status_cxxtr1.xml: Likewise.
2556 * doc/xml/manual/status_cxxtr24733.xml: Likewise.
2558 2020-01-18 Iain Sandoe <iain@sandoe.co.uk>
2560 * include/Makefile.am: Add coroutine to the std set.
2561 * include/Makefile.in: Regenerated.
2562 * include/std/coroutine: New file.
2564 2020-01-17 Jonathan Wakely <jwakely@redhat.com>
2567 * include/bits/c++config: Only do PSTL config when the header is
2568 present, to fix freestanding.
2569 * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare allocation
2570 functions if they were detected by configure.
2572 2020-01-16 Kai-Uwe Eckhardt <kuehro@gmx.de>
2573 Matthew Bauer <mjbauer95@gmail.com>
2574 Jonathan Wakely <jwakely@redhat.com>
2576 PR bootstrap/64271 (partial)
2577 * config/os/bsd/netbsd/ctype_base.h (ctype_base::mask): Change type
2579 (ctype_base::alpha, ctype_base::digit, ctype_base::xdigit)
2580 (ctype_base::print, ctype_base::graph, ctype_base::alnum): Sync
2581 definitions with NetBSD upstream.
2582 (ctype_base::blank): Use _CTYPE_BL.
2583 * config/os/bsd/netbsd/ctype_configure_char.cc (_C_ctype_): Remove
2585 (ctype<char>::classic_table): Use _C_ctype_tab_ instead of _C_ctype_.
2586 (ctype<char>::do_toupper, ctype<char>::do_tolower): Cast char
2587 parameters to unsigned char.
2588 * config/os/bsd/netbsd/ctype_inline.h (ctype<char>::is): Likewise.
2590 2020-01-16 François Dumont <fdumont@gcc.gnu.org>
2593 * include/bits/hashtable.h (_Hashtable<>): Make _Equality<> friend.
2594 * include/bits/hashtable_policy.h: Include <bits/stl_algo.h>.
2595 (_Equality_base): Remove.
2596 (_Equality<>::_M_equal): Review implementation. Use
2597 std::is_permutation.
2598 * testsuite/23_containers/unordered_multiset/operators/1.cc
2599 (Hash, Equal, test02, test03): New.
2600 * testsuite/23_containers/unordered_set/operators/1.cc
2601 (Hash, Equal, test02, test03): New.
2603 2020-01-15 Jonathan Wakely <jwakely@redhat.com>
2606 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type):
2607 Move here from <bits/range_access.h> and define using __int128 when
2609 (__is_integer_like, __is_signed_integer_like): Move here from
2610 <bits/range_access.h>.
2611 (weakly_incrementable): Use __is_signed_integer_like.
2612 * include/bits/range_access.h (__max_diff_type, __max_size_type)
2613 (__is_integer_like, __is_signed_integer_like): Move to
2614 <bits/iterator_concepts.h>.
2615 (__make_unsigned_like_t): Move here from <ranges>.
2616 * include/std/ranges (__make_unsigned_like_t): Move to
2617 <bits/range_access.h>.
2618 (iota_view): Replace using-directive with using-declarations.
2619 * testsuite/std/ranges/iota/93267.cc: New test.
2620 * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory.
2622 2020-01-13 Jonathan Wakely <jwakely@redhat.com>
2625 * include/bits/fs_path.h (path::generic_string<C,A>)
2626 [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Convert root-dir to forward-slash.
2627 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Check
2628 root-dir is converted to forward slash in generic pathname.
2629 * testsuite/27_io/filesystem/path/generic/utf.cc: New test.
2630 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: New test.
2633 * include/bits/atomic_base.h (__cpp_lib_atomic_value_initialization):
2635 (__atomic_flag_base, __atomic_base, __atomic_base<_PTp*>)
2636 (__atomic_float): Add default member initializer for C++20.
2637 * include/std/atomic (atomic): Likewise.
2638 (atomic::atomic()): Remove noexcept-specifier on default constructor.
2639 * include/std/version (__cpp_lib_atomic_value_initialization): Define.
2640 * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-error line
2642 * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2643 * testsuite/29_atomics/atomic/cons/value_init.cc: New test.
2644 * testsuite/29_atomics/atomic_flag/cons/value_init.cc: New test.
2645 * testsuite/29_atomics/atomic_flag/requirements/trivial.cc: Adjust
2646 expected result for is_trivially_default_constructible.
2647 * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
2648 * testsuite/29_atomics/atomic_float/value_init.cc: New test.
2649 * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Likewise.
2650 * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
2651 * testsuite/29_atomics/atomic_integral/cons/value_init.cc
2652 * testsuite/29_atomics/atomic_integral/requirements/trivial.cc: Adjust
2653 expected results for is_trivially_default_constructible.
2654 * testsuite/util/testsuite_common_types.h (has_trivial_dtor): Add
2657 2020-01-10 Jonathan Wakely <jwakely@redhat.com>
2659 * testsuite/util/testsuite_iterators.h: Improve comment.
2661 * testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11
2662 initialization syntax.
2665 * include/bits/streambuf_iterator.h (istreambuf_iterator): Make type
2666 of base class independent of __cplusplus value.
2667 [__cplusplus < 201103L] (istreambuf_iterator::reference): Override the
2668 type defined in the base class
2669 * testsuite/24_iterators/istreambuf_iterator/92285.cc: New test.
2670 * testsuite/24_iterators/istreambuf_iterator/requirements/
2671 base_classes.cc: Adjust expected base class for C++98.
2673 2020-01-09 Olivier Hainque <hainque@adacore.com>
2675 * doc/xml/manual/appendix_contributing.xml: Document _C2
2676 as a reserved identifier, by VxWorks.
2677 * include/bits/stl_map.h: Rename _C2 template typenames as _Cmp2.
2678 * include/bits/stl_multimap.h: Likewise.
2680 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2682 * include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==)
2683 (_ExtPtr_allocator::operator!=): Add missing const qualifiers.
2684 * include/ext/pointer.h (readable_traits<_Pointer_adapter<S>>): Add
2685 partial specialization to disambiguate the two constrained
2688 * include/experimental/type_traits (experimental::is_pod_v): Disable
2689 -Wdeprecated-declarations warnings around reference to std::is_pod.
2690 * include/std/type_traits (is_pod_v): Likewise.
2691 * testsuite/18_support/max_align_t/requirements/2.cc: Also check
2692 is_standard_layout and is_trivial. Do not check is_pod for C++20.
2693 * testsuite/20_util/is_pod/requirements/explicit_instantiation.cc:
2694 Add -Wno-deprecated for C++20.
2695 * testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise.
2696 * testsuite/20_util/is_pod/value.cc: Likewise.
2697 * testsuite/experimental/type_traits/value.cc: Likewise.
2699 2020-01-09 JeanHeyd "ThePhD" Meneide <phdofthehouse@gmail.com>
2701 * include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro.
2702 * include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20.
2703 * testuite/20_util/is_pod/deprecated-2a.cc: New test.
2705 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2708 * include/bits/random.h (operator>>): Check stream operation succeeds.
2709 * include/bits/random.tcc (operator<<): Remove redundant __ostream_type
2711 (operator>>): Remove redundant __istream_type typedefs. Check stream
2713 (__extract_params): New function to fill a vector from a stream.
2714 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
2717 * config/abi/pre/gnu.ver: Add new exports.
2718 * include/std/memory_resource (memory_resource::~memory_resource()):
2719 Do not define inline.
2720 (monotonic_buffer_resource::~monotonic_buffer_resource()): Likewise.
2721 * src/c++17/memory_resource.cc (memory_resource::~memory_resource()):
2723 (monotonic_buffer_resource::~monotonic_buffer_resource()): Define.
2724 * testsuite/20_util/monotonic_buffer_resource/93208.cc: New test.
2726 2020-01-09 François Dumont <fdumont@gcc.gnu.org>
2729 * include/bits/hashtable.h (_Hashtable<>::__alloc_node_gen_t): New
2731 (_Hashtable<>::__fwd_value_for): New.
2732 (_Hashtable<>::_M_assign_elements<>): Remove _NodeGenerator template
2734 (_Hashtable<>::_M_assign<>): Add _Ht template parameter.
2735 (_Hashtable<>::operator=(const _Hashtable<>&)): Adapt.
2736 (_Hashtable<>::_M_move_assign): Adapt. Replace std::move_if_noexcept
2738 (_Hashtable<>::_Hashtable(const _Hashtable&)): Adapt.
2739 (_Hashtable<>::_Hashtable(const _Hashtable&, const allocator_type&)):
2741 (_Hashtable<>::_Hashtable(_Hashtable&&, const allocator_type&)):
2743 * testsuite/23_containers/unordered_set/92124.cc: New.
2745 2020-01-08 Jonathan Wakely <jwakely@redhat.com>
2748 * src/c++17/fs_ops.cc (do_remove_all): New function implementing more
2749 detailed error reporting for remove_all. Check result of recursive
2750 call before incrementing iterator.
2751 (remove_all(const path&), remove_all(const path&, error_code&)): Use
2753 * src/filesystem/ops.cc (remove_all(const path&, error_code&)): Check
2754 result of recursive call before incrementing iterator.
2755 * testsuite/27_io/filesystem/operations/remove_all.cc: Check errors
2756 are reported correctly.
2757 * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise.
2759 2020-01-07 Thomas Rodgers <trodgers@redhat.com>
2761 * include/std/condition_variable
2762 (condition_variable_any::wait_on): Rename to match current draft
2764 (condition_variable_any::wait_on_until): Likewise.
2765 (condition_variable_any::wait_on_for): Likewise.
2766 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
2767 Adjust tests to account for renamed methods.
2769 2020-01-07 François Dumont <fdumont@gcc.gnu.org>
2772 * include/bits/stl_tree.h
2773 (_Rb_tree<>::_M_move_assign(_Rb_tree&, false_type)): Replace
2774 std::move_if_noexcept by std::move.
2775 * testsuite/23_containers/map/92124.cc: New.
2776 * testsuite/23_containers/set/92124.cc: New.
2778 2020-01-06 Jonathan Wakely <jwakely@redhat.com>
2780 * include/std/stop_token (stop_token): Remove operator!= (LWG 3254).
2781 (stop_source): Likewise (LWG 3362).
2782 * testsuite/30_threads/stop_token/stop_source.cc: Test equality
2785 * include/bits/stl_algobase.h (__is_byte_iter, __min_cmp)
2786 (lexicographical_compare_three_way): Do not depend on
2788 * include/std/version (__cpp_lib_three_way_comparison): Only define
2789 when __cpp_lib_concepts is defined.
2790 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
2792 2020-01-03 Jonathan Wakely <jwakely@redhat.com>
2794 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
2795 Only define four-argument overload when __cpp_lib_concepts is defined.
2797 2020-01-01 John David Anglin <danglin@gcc.gnu.org>
2799 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
2801 2020-01-01 Jakub Jelinek <jakub@redhat.com>
2803 Update copyright years.
2805 Copyright (C) 2020 Free Software Foundation, Inc.
2807 Copying and distribution of this file, with or without modification,
2808 are permitted in any medium without royalty provided the copyright
2809 notice and this notice are preserved.