1 2020-05-21 Jonathan Wakely <jwakely@redhat.com>
3 * include/experimental/executor (use_future_t::use_future_t()): Fix
4 incorrect noexcept-specifier.
5 * include/experimental/internet (basic_resolver_results): Adjust
7 * include/experimental/socket (__basic_socket_impl::release): Add
9 (basic_socket(io_context&, const endpoint_type&)): Fix argument to
11 (basic_socket::release(), basic_socket::release(error_code&)): Add
12 missing member functions.
13 (basic_socket::is_open()): Add nodiscard attribute.
14 (basic_socket::close(error_code&)): Pass argument to base function.
15 (basic_socket_acceptor::release())
16 (basic_socket_acceptor::release(error_code&)): Add missing member
18 (basic_socket_acceptor::is_open()): Add nodiscard attribute.
19 (basic_socket_streambuf::error()): Add noexcept.
20 (basic_socket_iostream::error()): Likewise.
21 * testsuite/experimental/net/socket/basic_socket.cc: New test.
23 * include/experimental/buffer: Replace typedefs with
25 * include/experimental/executor: Likewise.
26 * include/experimental/internet: Likewise.
27 * include/experimental/socket: Likewise.
28 * include/experimental/timer: Likewise.
30 2020-05-19 Jonathan Wakely <jwakely@redhat.com>
33 * src/c++11/random.cc (__x86_rdseed): Allow fallback function to be
35 (__x86_rdseed_rdrand): New function that uses rdseed with rdrand
37 (random_device::_M_init): Use __x86_rdseed_rdrand when both
38 instructions are available.
39 * testsuite/26_numerics/random/random_device/94087.cc: New test.
41 2020-05-19 Patrick Palka <ppalka@redhat.com>
44 * testsuite/20_util/pair/astuple/get_neg.cc: Prune "type/value
46 * testsuite/20_util/tuple/element_access/get_neg.cc: Likewise.
48 2020-05-15 H.J. Lu <hongjiu.lu@intel.com>
51 * configure: Regenerated.
53 2020-05-14 H.J. Lu <hongjiu.lu@intel.com>
55 * configure: Regenerated.
57 2020-05-13 Alexandre Oliva <oliva@adacore.com>
60 * include/experimental/memory_resource
61 (__resource_adaptor_imp::do_allocate): Handle max_align_t on
62 x86-vxworks as on x86-solaris.
63 (__resource_adaptor_imp::do_deallocate): Likewise.
64 * testsuite/experimental/memory_resource/new_delete_resource.cc:
66 (BAD_MAX_ALIGN_T): Define on x86-vxworks as on x86-solaris.
67 (test03): Drop max-align test for char-aligned alloc.
69 2020-05-08 Ulrich Drepper <drepper@redhat.com>
71 * include/bits/atomic_base.h (atomic_flag): Implement test member
73 * include/std/version: Define __cpp_lib_atomic_flag_test.
74 * testsuite/29_atomics/atomic_flag/test/explicit.cc: New file.
75 * testsuite/29_atomics/atomic_flag/test/implicit.cc: New file.
77 2020-05-07 Jonathan Wakely <jwakely@redhat.com>
79 PR libstdc++/94971 (partial)
80 * include/bits/ranges_algo.h (ranges::__sample_fn): Qualify
81 std::sample using macro to work in parallel mode.
82 (__sort_fn): Likewise for std::sort.
83 (ranges::__nth_element_fn): Likewise for std::nth_element.
84 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
85 Likewise for std::__min_cmp.
86 * include/parallel/algobase.h (lexicographical_compare_three_way):
87 Add to namespace std::__parallel.
90 * include/parallel/multiway_merge.h (_GuardedIterator::operator*)
91 (_GuardedIterator::operator _RAIter, _UnguardedIterator::operator*)
92 (_UnguardedIterator::operator _RAIter): Add const qualifier.
93 (operator<(_GuardedIterator&, _GuardedIterator&)
94 (operator<=(_GuardedIterator&, _GuardedIterator&)
95 (operator<(_UnguardedIterator&, _UnguardedIterator&)
96 (operator<=(_UnguardedIterator&, _UnguardedIterator&): Change
97 parameters to const references.
99 2020-05-07 Eric Botcazou <ebotcazou@adacore.com>
101 * config/abi/post/sparc64-linux-gnu/baseline_symbols.txt: Update.
102 * config/abi/post/sparc64-linux-gnu/32/baseline_symbols.txt: Likewise.
104 2020-05-06 François Dumont <fdumont@gcc.gnu.org>
106 * include/bits/stl_algobase.h (struct _Bit_iterator): New declaration.
107 (std::__fill_a1(_Bit_iterator, _Bit_iterator, const bool&)): Likewise.
108 * include/bits/stl_bvector.h (__fill_bvector): Move outside
109 _GLIBCXX_STD_C namespace.
110 (fill(_Bit_iterator, _Bit_iterator, const bool&)): Likewise and rename
112 (__fill_a1): ...this.
113 * testsuite/25_algorithms/fill/bvector/1.cc: New.
115 2020-05-06 H.J. Lu <hongjiu.lu@intel.com>
117 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
119 2020-05-06 Rainer Orth <ro@CeBiTec.Uni-Bielefeld.DE>
121 * config/abi/post/i386-solaris/baseline_symbols.txt: Regenerate.
122 * config/abi/post/i386-solaris/amd64/baseline_symbols.txt:
124 * config/abi/post/sparc-solaris/baseline_symbols.txt: Likewise.
125 * config/abi/post/sparc-solaris/sparcv9/baseline_symbols.txt:
128 2020-05-06 Martin Liska <mliska@suse.cz>
131 2020-05-05 Martin Liska <mliska@suse.cz>
133 * include/parallel/multiway_merge.h:
134 Use const for _Compare template argument.
136 2020-05-06 Jonathan Wakely <jwakely@redhat.com>
138 * doc/xml/manual/abi.xml (abi.versioning.history): Document library
139 versions for GCC 9.[123] and 10.1 releases.
140 * doc/html/*: Regenerate.
142 2020-05-06 Jakub Jelinek <jakub@redhat.com>
144 * config/abi/post/x86_64-linux-gnu/baseline_symbols.txt: Update.
145 * config/abi/post/x86_64-linux-gnu/32/baseline_symbols.txt: Update.
146 * config/abi/post/i386-linux-gnu/baseline_symbols.txt: Update.
147 * config/abi/post/i486-linux-gnu/baseline_symbols.txt: Update.
148 * config/abi/post/aarch64-linux-gnu/baseline_symbols.txt: Update.
149 * config/abi/post/s390x-linux-gnu/baseline_symbols.txt: Update.
150 * config/abi/post/powerpc64-linux-gnu/baseline_symbols.txt: Update.
152 2020-05-05 Martin Liska <mliska@suse.cz>
155 * include/parallel/multiway_merge.h:
156 Use const for _Compare template argument.
158 2020-05-04 Fangrui Song <maskray@google.com>
160 * libsupc++/cxxabi.h (__cxa_finalize): Fix return type.
162 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
164 * doc/xml/faq.xml: Use working link for SGI STL FAQ.
165 * doc/html/*: Regenerate.
168 * src/c++17/memory_resource.cc
169 (monotonic_buffer_resource::_Chunk::release): Use size_t for shift
172 2020-05-04 Nathan Sidwell <nathan@acm.org>
175 * libsupc++/dyncast.cc (__dynamic_cast): Cast offsetof to
176 ptrdiff_t before negation, to show intent more clearly.
178 2020-05-04 Jonathan Wakely <jwakely@redhat.com>
181 * src/c++17/memory_resource.cc (synchronized_pool_resource::_TPools):
182 Add comment about single-threaded behaviour.
183 (synchronized_pool_resource::_TPools::move_nonempty_chunks()): Hoist
184 class member access out of loop.
185 (synchronized_pool_resource::synchronized_pool_resource())
186 (synchronized_pool_resource::~synchronized_pool_resource())
187 (synchronized_pool_resource::release()): Check __gthread_active_p
188 before creating and/or deleting the thread-specific data key.
189 (synchronized_pool_resource::_M_thread_specific_pools()): Adjust
191 (synchronized_pool_resource::do_allocate(size_t, size_t)): Add fast
192 path for single-threaded case.
193 (synchronized_pool_resource::do_deallocate(void*, size_t, size_t)):
194 Likewise. Return if unable to find a pool that owns the allocation.
195 * testsuite/20_util/synchronized_pool_resource/allocate_single.cc:
197 * testsuite/20_util/synchronized_pool_resource/cons_single.cc: New
199 * testsuite/20_util/synchronized_pool_resource/release_single.cc: New
202 2020-05-03 Jonathan Wakely <jwakely@redhat.com>
205 * include/bits/stl_algobase.h (__fill_a1): Make overload for byte types
206 usable in constant expressions.
207 * testsuite/25_algorithms/fill_n/constexpr.cc: Test with bytes and
210 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
213 * testsuite/17_intro/badnames.cc: Test values between _E9 and _E24 too.
215 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
216 Patrick Palka <ppalka@redhat.com>
219 * include/bits/iterator_concepts.h (ranges::__cust_imove::_IMove):
220 Add trait to determine return type and an alias for it.
221 (ranges::__cust_imove::_IMove::operator()): Use __result instead of
223 (iter_rvalue_reference_t): Use _IMove::__type instead of checking
224 the result of ranges::iter_move.
225 (__detail::__indirectly_readable_impl): Use iter_rvalue_reference_t
226 instead of checking the result of ranges::iter_move.
227 * testsuite/24_iterators/customization_points/92894.cc: New test.
228 * testsuite/24_iterators/indirect_callable/92894.cc: New test.
230 2020-05-01 Jonathan Wakely <jwakely@redhat.com>
233 * include/std/type_traits (__is_complete_or_unbounded): Replace
235 * testsuite/17_intro/badnames.cc: New test.
237 2020-04-30 Jonathan Wakely <jwakely@redhat.com>
240 * include/bits/alloc_traits.h (allocator_traits::_S_construct)
241 (allocator_traits::_S_destroy)
242 (allocator_traits<allocator<T>>::construct): Use traits in
244 * include/bits/allocator.h (allocator<void>::construct)
245 (allocator<void>::destroy): Likewise.
246 * include/ext/malloc_allocator.h (malloc_allocator::construct)
247 (malloc_allocator::destroy): Likewise.
248 * include/ext/new_allocator.h (new_allocator::construct)
249 (new_allocator::destroy): Likewise.
250 * testsuite/20_util/allocator/89510.cc: New test.
251 * testsuite/ext/malloc_allocator/89510.cc: New test.
252 * testsuite/ext/new_allocator/89510.cc: New test.
254 2020-04-29 Jonathan Wakely <jwakely@redhat.com>
257 * include/bits/basic_string.tcc: Update comment about explicit
260 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
263 * include/bits/allocator.h (__cpp_lib_allocator_is_always_equal):
264 Remove non-standard macro.
265 * include/bits/stl_iterator.h (__cpp_lib_constexpr_iterator): Define
266 to indicate P1032R1 support.
267 * include/bits/stl_pair.h (__cpp_lib_constexpr_utility): Likewise.
268 * include/std/string_view (__cpp_lib_constexpr_string_view): Likewise.
269 * include/std/tuple (__cpp_lib_constexpr_tuple): Likewise.
270 * include/std/version (__cpp_lib_allocator_is_always_equal): Remove.
271 (__cpp_lib_constexpr_iterator, __cpp_lib_constexpr_string_view)
272 (__cpp_lib_constexpr_tuple, __cpp_lib_constexpr_utility): Define.
273 * testsuite/20_util/function_objects/constexpr_searcher.cc: Check
275 * testsuite/20_util/tuple/cons/constexpr_allocator_arg_t.cc: Likewise.
276 * testsuite/21_strings/basic_string_view/operations/copy/char/
277 constexpr.cc: Likewise.
278 * testsuite/24_iterators/insert_iterator/constexpr.cc: Likewise.
281 * include/bits/alloc_traits.h (_S_construct): Restore placement
282 new-expression for C++11/14/17 and call std::construct_at directly
284 * include/bits/stl_construct.h (_Construct): Revert to non-constexpr
285 function returning void.
286 * testsuite/20_util/specialized_algorithms/
287 uninitialized_value_construct/94831.cc: New test.
288 * testsuite/23_containers/vector/cons/94831.cc: New test.
290 2020-04-28 Patrick Palka <ppalka@redhat.com>
292 LWG 3433 subrange::advance(n) has UB when n < 0
293 * include/std/ranges (subrange::prev): Fix typo.
294 (subrange::advance): Handle a negative argument as per the proposed
295 resolution of LWG 3433.
296 * testsuite/std/ranges/subrange/lwg3433.cc: New test.
298 2020-04-28 Jonathan Wakely <jwakely@redhat.com>
299 Iain Sandoe <iain@sandoe.co.uk>
302 * include/std/coroutine: Implement handing for non-
303 class coroutine return types.
305 2020-04-24 Jonathan Wakely <jwakely@redhat.com>
307 * include/experimental/executor (service_already_exists): Make default
308 constructor public (LWG 3414).
309 * testsuite/experimental/net/execution_context/make_service.cc: Check
310 the service_already_exists can be default constructed.
312 2020-04-24 Kamlesh Kumar <kamleshbhalui@gmail.com>
313 Jonathan Wakely <jwakely@redhat.com>
317 * include/std/any (any): Rename template parameters for consistency
319 (any::_Decay): Rename to _Decay_if_not_any.
320 (any::any(T&&):: Remove is_constructible from constraints. Remove
321 non-standard overload.
322 (any::any(in_place_type_t<T>, Args&&...))
323 (any::any(in_place_type_t<T>, initializer_list<U>, Args&&...))
324 (any::emplace(Args&&...))
325 (any::emplace(initializer_list<U>, Args&&...)):
326 Use decay_t instead of _Decay.
327 * testsuite/20_util/any/cons/90415.cc: New test.
328 * testsuite/20_util/any/cons/92156.cc: New Test.
329 * testsuite/20_util/any/misc/any_cast_neg.cc: Make dg-error directives
331 * testsuite/20_util/any/modifiers/92156.cc: New test.
333 2020-04-23 Jonathan Wakely <jwakely@redhat.com>
335 * doc/xml/manual/status_cxx2020.xml: Update C++20 status table.
336 * doc/html/*: Regenerate.
338 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Revert
339 value for C++17 to 201803L because P0858R0 is supported for C++17.
340 * include/std/version (__cpp_lib_array_constexpr): Likewise.
341 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
342 Check for value corresponding to P0031R0 features being tested.
343 * testsuite/23_containers/array/requirements/constexpr_iter.cc:
344 Check for value corresponding to P0858R0 features being tested.
346 * include/std/version (__cpp_lib_three_way_comparison): Define for
349 2020-04-23 Thomas Rodgers <rodgert@appliantology.com>
351 * include/experimental/net/executor (system_context): Mark
352 system_context::system_context() = delete.
353 * testsuite/experimental/net/executor/1.cc: Add new
354 test to check system_context is not default constructible.
356 2020-04-23 Iain Sandoe <iain@sandoe.co.uk>
358 * include/std/coroutine: Update the inline namespace to __n4861.
359 Add the __cpp_lib_coroutine define, set to 201902L.
360 * include/std/version: Add __cpp_lib_coroutine, set to 201902L.
362 2020-04-22 Jonathan Wakely <jwakely@redhat.com>
364 * include/std/execution (__cpp_lib_execution): Define to indicate
365 support for P0024R2 and P1001R2.
366 * include/std/version (__cpp_lib_execution): Define.
367 * testsuite/25_algorithms/pstl/feature_test.cc: Only test macro
368 defined by <algorithm>, move other tests to new tests ...
369 * testsuite/25_algorithms/pstl/feature_test-2.cc: New test.
370 * testsuite/25_algorithms/pstl/feature_test-3.cc: New test.
371 * testsuite/25_algorithms/pstl/feature_test-4.cc: New test.
372 * testsuite/25_algorithms/pstl/feature_test-5.cc: New test.
374 * include/bits/stl_iterator.h (__cpp_lib_array_constexpr): Define
375 different values for C++17 and C++20, to indicate different feature
376 sets. Update value for C++20 to indicate P1032R1 support.
377 * include/std/version (__cpp_lib_array_constexpr): Likewise.
378 * testsuite/23_containers/array/comparison_operators/constexpr.cc:
379 Check feature test macro.
380 * testsuite/23_containers/array/element_access/constexpr_c++17.cc:
382 * testsuite/23_containers/array/requirements/constexpr_fill.cc: Check
384 * testsuite/23_containers/array/requirements/constexpr_iter.cc: Test
385 in C++17 mode and check feature test macro.
387 * include/std/utility (__cpp_lib_constexpr_algorithms): Do not define
389 * testsuite/20_util/exchange/constexpr.cc: Do not expect macro to be
390 defined by <utility>.
392 * include/std/functional (__cpp_lib_concepts): Update macro value to
393 indicate P1964R2 support.
394 * include/std/version (__cpp_lib_concepts): Likewise.
395 * testsuite/std/concepts/1.cc: Adjust expected value.
396 * testsuite/std/concepts/2.cc: Likewise.
398 * include/std/functional (__cpp_lib_constexpr_invoke): Rename to
399 __cpp_lib_constexpr_functional.
400 * include/std/version (__cpp_lib_constexpr_invoke): Likewise.
401 * testsuite/20_util/function_objects/invoke/constexpr.cc: Adjust.
403 * include/bits/ptr_traits.h (__cpp_lib_constexpr_memory): Define to
404 indicate P1006R1 support.
405 (__cpp_lib_to_address): Define to indicate P0653R2 support.
406 * include/bits/range_access.h (__cpp_lib_ssize): Define to indicate
408 * include/bits/ranges_algo.h (__cpp_lib_shift): Define to indicate
410 * include/std/atomic (__cpp_lib_atomic_float): Define to indicate
412 * include/std/memory (__cpp_lib_assume_aligned): Define to indicate
414 * include/std/memory_resource (__cpp_lib_polymorphic_allocator):
415 Define to indicate P0339R6 support.
416 * include/std/string_view (__cpp_lib_starts_ends_with): Define to
417 indicate P0457R2 support.
418 * include/std/type_traits (__cpp_lib_is_nothrow_convertible): Define
419 to indicate P0758R1 support.
420 (__cpp_lib_remove_cvref): Define to indicate P0550R2 support.
421 (__cpp_lib_type_identity): Define to indicate P0887R1 support.
422 * include/std/version (__cpp_lib_atomic_float)
423 (__cpp_lib_is_nothrow_convertible, __cpp_lib_remove_cvref)
424 (__cpp_lib_type_identity, __cpp_lib_assume_aligned)
425 (__cpp_lib_constexpr_memory, __cpp_lib_polymorphic_allocator)
426 (__cpp_lib_shift, __cpp_lib_ssize, __cpp_lib_starts_ends_with)
427 (__cpp_lib_to_address): Define.
428 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
430 * include/bits/stl_map.h (__cpp_lib_map_insertion): Remove old
432 * include/bits/unordered_map.h (__cpp_lib_unordered_map_insertion):
434 * include/std/version (__cpp_lib_map_insertion)
435 (__cpp_lib_unordered_map_insertion): Remove.
437 * include/std/condition_variable (__cpp_lib_jthread): Remove
438 redundant definition.
439 * include/std/stop_token (__cpp_lib_jthread): Update macro value to
440 indicate P1869R1 support.
441 * include/std/version (__cpp_lib_jthread): Update value.
442 * testsuite/30_threads/condition_variable_any/stop_token/1.cc: Check
443 for updated macro value.
444 * testsuite/30_threads/condition_variable_any/stop_token/2.cc:
446 * testsuite/30_threads/jthread/1.cc: Likewise.
447 * testsuite/30_threads/jthread/2.cc: Likewise.
448 * testsuite/30_threads/stop_token/1.cc: Likewise.
449 * testsuite/30_threads/stop_token/2.cc: Likewise.
451 * testsuite/21_strings/basic_string/erasure.cc: Check for
452 __cpp_lib_erase_if macro.
453 * testsuite/23_containers/deque/erasure.cc: Add header name to #error
455 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
456 * testsuite/23_containers/list/erasure.cc: Likewise.
457 * testsuite/23_containers/map/erasure.cc: Likewise.
458 * testsuite/23_containers/set/erasure.cc: Likewise.
459 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
460 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
461 * testsuite/23_containers/vector/erasure.cc: Likewise.
463 2020-04-21 Jonathan Wakely <jwakely@redhat.com>
465 * include/bits/stl_iterator.h (__normal_iterator): Use synth-three-way
466 to define operator<=>.
467 * testsuite/24_iterators/normal_iterator/cmp_c++20.cc: New test.
469 * doc/Makefile.am (xml_sources_manual): Add missing XML files.
470 * doc/Makefile.in: Regenerate.
471 * doc/xml/manual/status_cxx1998.xml: Refer to "this section" instead
473 * doc/xml/manual/status_cxx2011.xml: Formatting and other corrections
474 to the C++11 status table.
475 * doc/xml/manual/status_cxx2014.xml: Replace list of C++14 feature
476 proposals with table matching contents of the C++14 standard.
477 * doc/xml/manual/status_cxx2017.xml: Add table matching contents of
479 * doc/html/*: Regenerate.
482 * include/std/type_traits (__is_nt_constructible_impl): Add partial
483 specializations for bounded arrays with non-empty initializers.
484 * testsuite/20_util/is_nothrow_constructible/value_c++20.cc: New test.
486 2020-04-20 Thomas Rodgers <trodgers@redhat.com>
488 * testsuite/lib/libstdc++.exp: Add additional_flags=
489 -DTBB_SUPRESS_DEPRECATED_MESSAGES=1 to suppress warnings when
490 compiling with a newer Thread Building Blocks.
492 2020-04-20 Jonathan Wakely <jwakely@redhat.com>
494 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
496 * testsuite/20_util/is_constructible/51185.cc: Make test class a
497 non-aggregate so that the test verifies the same thing in all -std
499 * testsuite/20_util/is_constructible/value-2.cc: Adjust expected
500 results for some types when paren-init for aggregates is supported.
502 * include/std/version (__cpp_lib_three_way_comparison): Update value.
503 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
504 (__detail::__synth3way): Add noexcept-specifier.
506 * include/bits/stl_map.h (map): Define operator<=> and remove
508 * include/bits/stl_multimap.h (multimap): Likewise.
509 * include/bits/stl_multiset.h (multiset): Likewise.
510 * include/bits/stl_set.h (set): Likewise.
511 * include/bits/stl_tree.h (_Rb_tree): Likewise.
512 (_Rb_tree_iterator, _Rb_tree_const_iterator): Remove redundant
513 operator!= for C++20.
514 * include/debug/map.h (__gnu_debug::map): Define operator<=> for C++20.
515 * include/debug/multimap.h (__gnu_debug::multimap): Likewise.
516 * include/debug/multiset.h (__gnu_debug::multiset): Likewise.
517 * include/debug/set.h (__gnu_debug::set): Likewise.
518 * testsuite/23_containers/map/operators/cmp_c++20.cc: New test.
519 * testsuite/23_containers/multimap/operators/cmp_c++20.cc: New test.
520 * testsuite/23_containers/multiset/operators/cmp_c++20.cc: New test.
521 * testsuite/23_containers/set/operators/cmp_c++20.cc: New test.
523 2020-04-20 Matthias Kretz <kretz@kde.org>
525 * testsuite/lib/libstdc++.exp: Avoid illegal argument to verbose.
527 2020-04-19 Jonathan Wakely <jwakely@redhat.com>
529 * include/bits/stl_queue.h (queue): Define operator<=> for C++20.
530 * include/bits/stl_stack.h (stack): Likewise.
531 * testsuite/23_containers/queue/cmp_c++20.cc: New test.
532 * testsuite/23_containers/stack/cmp_c++20.cc: New test.
534 * include/bits/unordered_map.h (unordered_map, unordered_multimap):
535 Remove redundant operator!= for C++20.
536 * include/bits/unordered_set.h (unordered_set, unordered_multiset):
538 * include/debug/unordered_map (unordered_map, unordered_multimap):
540 * include/debug/unordered_set (unordered_set, unordered_multiset):
544 * include/debug/formatter.h (_Error_formatter::_Parameter): Fix
545 redundant assignment in constructor.
547 2020-04-18 Jonathan Wakely <jwakely@redhat.com>
549 * include/std/chrono (duration, time_point): Define operator<=> and
550 remove redundant operator!= for C++20.
551 * testsuite/20_util/duration/comparison_operators/three_way.cc: New
553 * testsuite/20_util/time_point/comparison_operators/three_way.cc: New
556 * testsuite/util/native_type/native_priority_queue.hpp: Use
557 allocator_traits to rebind allocator.
559 2020-04-17 Jonathan Wakely <jwakely@redhat.com>
561 * include/bits/forward_list.h (forward_list): Define operator<=> and
562 remove redundant comparison operators for C++20.
563 * include/bits/stl_bvector.h (vector<bool, Alloc>): Likewise.
564 * include/bits/stl_deque.h (deque): Likewise.
565 * include/bits/stl_iterator.h (__normal_iterator): Likewise.
566 * include/bits/stl_list.h (list): Likewise.
567 * include/bits/stl_vector.h (vector): Likewise.
568 * include/debug/deque (__gnu_debug::deque): Likewise.
569 * include/debug/forward_list (__gnu_debug::forward_list): Likewise.
570 * include/debug/list (__gnu_debug::list): Likewise.
571 * include/debug/safe_iterator.h (__gnu_debug::_Safe_iterator):
573 * include/debug/vector (__gnu_debug::vector): Likewise.
574 * include/ext/pointer.h (__gnu_cxx::_Pointer_adapter): Define
575 operator<=> for C++20.
576 * testsuite/23_containers/deque/operators/cmp_c++20.cc: New test.
577 * testsuite/23_containers/forward_list/cmp_c++20.cc: New test.
578 * testsuite/23_containers/list/cmp_c++20.cc: New test.
579 * testsuite/23_containers/vector/bool/cmp_c++20.cc: New test.
580 * testsuite/23_containers/vector/cmp_c++20.cc: New test.
582 * include/bits/basic_string.h (basic_string): Define operator<=> and
583 remove redundant comparison operators for C++20.
584 * include/bits/char_traits.h (__gnu_cxx::char_traits, char_traits):
585 Add comparison_category members.
586 (__detail::__char_traits_cmp_cat): New helper to get comparison
587 category from char traits class.
588 * include/bits/regex.h (regex_traits::_RegexMask::operator!=): Do not
590 (sub_match): Define operator<=> and remove redundant comparison
592 (match_results): Remove redundant operator!= for C++20.
593 * include/std/string_view (basic_string_view): Define operator<=> and
594 remove redundant comparison operators for C++20.
595 * testsuite/21_strings/basic_string/operators/char/cmp_c++20.cc: New
597 * testsuite/21_strings/basic_string/operators/wchar_t/cmp_c++20.cc:
599 * testsuite/21_strings/basic_string_view/operations/copy/char/
600 constexpr.cc: Initialize variable.
601 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
602 constexpr.cc: Likewise.
603 * testsuite/21_strings/basic_string_view/operators/char/2.cc: Add
604 dg-do directive and remove comments showing incorrect signatures.
605 * testsuite/21_strings/basic_string_view/operators/wchar_t/2.cc:
607 * testsuite/21_strings/basic_string_view/operators/char/cmp_c++20.cc:
609 * testsuite/21_strings/basic_string_view/operators/wchar_t/cmp_c++20.cc:
611 * testsuite/28_regex/sub_match/compare_c++20.cc: New test.
613 2020-04-16 Jonathan Wakely <jwakely@redhat.com>
615 * testsuite/20_util/unsynchronized_pool_resource/allocate.cc: Remove
616 name of unused parameter.
618 2020-04-15 Jonathan Wakely <jwakely@redhat.com>
620 * include/bits/fs_dir.h (file_status): Define operator== for C++20.
621 (directory_entry): Define operator<=> and remove redundant comparison
623 * include/bits/fs_fwd.h (space_info): Define operator== for C++20.
624 * include/bits/fs_path.h (path): Define operator<=> and remove
625 redundant comparison operators for C++20.
626 * testsuite/27_io/filesystem/path/compare/compare.cc: Fix comment.
627 * testsuite/27_io/filesystem/path/compare/lwg2936.cc: Likewise.
628 * testsuite/27_io/filesystem/path/compare/path.cc: Likewise.
629 * testsuite/27_io/filesystem/path/compare/strings.cc: Likewise.
631 * include/bits/allocator.h (operator!=): Do not define for C++20.
632 * include/bits/locale_classes.h (operator!=): Likewise.
633 * include/bits/std_function.h (operator==(nullptr_t, const function&))
634 (operator!=(const function&, nullptr_t))
635 (operator!=(nullptr_t, const function&)): Likewise.
636 * include/ext/bitmap_allocator.h (operator!=): Likewise.
637 * include/ext/debug_allocator.h (operator!=): Likewise.
638 * include/ext/extptr_allocator.h (operator!=): Likewise.
639 * include/ext/malloc_allocator.h (operator!=): Likewise.
640 * include/ext/mt_allocator.h (operator!=): Likewise.
641 * include/ext/new_allocator.h (operator!=): Likewise.
642 * include/ext/pool_allocator.h (operator!=): Likewise.
643 * include/ext/throw_allocator.h (operator!=): Likewise.
644 * include/std/bitset (bitset::operator!=): Likewise.
645 * include/std/memory_resource (operator!=): Likewise.
646 * include/std/scoped_allocator (operator!=): Likewise.
648 * include/std/typeindex (operator<=>): Define for C++20.
649 * testsuite/20_util/typeindex/comparison_operators_c++20.cc: New test.
651 2020-04-14 Jonathan Wakely <jwakely@redhat.com>
653 * libsupc++/compare (compare_three_way): Fix constraint so that
654 BUILTIN-PTR-THREE-WAY does not require three_way_comparable_with.
655 * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc:
659 * include/bits/shared_ptr.h (operator<=>): Define for C++20.
660 * include/bits/shared_ptr_base.h (operator<=>): Likewise.
661 * include/bits/unique_ptr.h (operator<=>): Add inline specifier.
662 * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc: New test.
663 * testsuite/20_util/shared_ptr/comparison/less.cc: Do not expect
664 std::less<A*> to be used when comparing std::shared_ptr<A> objects in
668 * libsupc++/compare (__unspec): Add noexcept-specifier to constructor.
669 * testsuite/18_support/comparisons/categories/94565.cc: New test.
671 2020-04-13 Iain Sandoe <iain@sandoe.co.uk>
673 * include/std/coroutine: Update coroutines builtin define,
676 2020-04-09 Jonathan Wakely <jwakely@redhat.com>
678 * libsupc++/compare (compare_three_way): Fix noexcept-specifier.
679 (strong_order, weak_order, partial_order): Replace uses of <=> with
680 compare_three_way function object (LWG 3324).
681 * testsuite/18_support/comparisons/algorithms/partial_order.cc: Add
682 equality operator so that X satisfies three_way_comparable.
683 * testsuite/18_support/comparisons/algorithms/strong_order.cc:
685 * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise.
687 * include/bits/unique_ptr.h (operator<=>): Define for C++20.
688 * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
689 * testsuite/20_util/default_delete/void_neg.cc: Likewise.
690 * testsuite/20_util/unique_ptr/comparison/compare.cc: New test.
691 * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc: New test.
693 2020-04-08 Jonathan Wakely <jwakely@redhat.com>
695 * include/bits/slice_array.h (operator==(const slice&, const slice&)):
697 * include/std/complex (operator==(const T&, const complex<T>&))
698 (operator!=(const complex<T>&, const complex<T>&))
699 (operator!=(const complex<T>&, const T&))
700 (operator!=(const T&, const complex<T>&)): Do not declare for C++20.
701 * testsuite/26_numerics/slice/compare.cc: New test.
703 * include/std/charconv (to_chars_result, from_chars_result): Add
704 defaulted equality comparisons for C++20.
705 * testsuite/20_util/from_chars/compare.cc: New test.
706 * testsuite/20_util/to_chars/compare.cc: New test.
708 2020-04-07 Jonathan Wakely <jwakely@redhat.com>
711 * include/std/charconv (__integer_to_chars_result_type)
712 (__integer_from_chars_result_type): Use __or_ instead of __or_v_ to
714 * testsuite/20_util/from_chars/1.cc: Run test as C++14 and replace
715 use of std::string_view with std::string.
716 * testsuite/20_util/from_chars/2.cc: Likewise.
717 * testsuite/20_util/to_chars/1.cc: Likewise.
718 * testsuite/20_util/to_chars/2.cc: Likewise.
720 2020-04-06 Jonathan Wakely <jwakely@redhat.com>
723 * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Make it
724 usable in constant expressions for C++20.
725 (__gnu_cxx::char_traits::copy, __gnu_cxx::char_traits::assign): Add
726 _GLIBCXX20_CONSTEXPR.
727 (std::char_traits<char>, std::char_traits<wchar_t>)
728 (std::char_traits<char8_t>): Make move, copy and assign usable in
729 constant expressions for C++20.
730 (std::char_traits<char16_t>, std::char_traits<char32_t>): Make move
731 and copy usable in constant expressions for C++20.
732 * include/std/string_view (basic_string_view::copy): Add
733 _GLIBCXX20_CONSTEXPR.
734 * testsuite/21_strings/basic_string_view/operations/copy/char/
735 constexpr.cc: New test.
736 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
737 constexpr.cc: New test.
739 2020-04-05 Gerald Pfeifer <gerald@pfeifer.com>
741 * doc/xml/manual/appendix_contributing.xml: Refer to Git
742 documentation instead of Subversion. Switch to https.
743 * doc/html/manual/appendix_contributing.html: Regenerate.
745 2020-04-03 Jonathan Wakely <jwakely@redhat.com>
748 * include/bits/ptr_traits.h (__to_address): Add special case for debug
749 iterators, to avoid dereferenceable check.
750 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
751 * testsuite/20_util/to_address/debug.cc: New test.
753 2020-04-01 Andrea Corallo <andrea.corallo@arm.com>
755 * testsuite/experimental/net/execution_context/use_service.cc:
756 Require pthread and gthreads.
758 2020-04-01 Gerald Pfeifer <gerald@pfeifer.com>
760 * doc/xml/manual/appendix_free.xml: Move "free books" list from
762 * doc/html/manual/appendix_free.html: Regenerate.
764 2020-03-31 Ville Voutilainen <ville.voutilainen@gmail.com>
766 Library-side tests for parenthesized aggregate init
771 * testsuite/20_util/allocator_traits/members/92878_92947.cc: New.
772 * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
773 * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
774 * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
775 * testsuite/20_util/optional/assignment/92878_92947.cc: Likewise.
776 * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
777 * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
778 * testsuite/20_util/shared_ptr/creation/92878_92947.cc: Likewise.
779 * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
781 * testsuite/20_util/unique_ptr/creation/92878_92947.cc: Likewise.
782 * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
783 * testsuite/20_util/variant/92878_92947.cc: Likewise.
784 * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
786 * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
788 * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
790 * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
792 * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
794 * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
796 * testsuite/23_containers/priority_queue/92878_92947.cc: Likewise.
797 * testsuite/23_containers/queue/92878_92947.cc: Likewise.
798 * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
800 * testsuite/23_containers/stack/92878_92947.cc: Likewise.
801 * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
803 * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
805 * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
807 * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
809 * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
812 2020-03-28 Jonathan Wakely <jwakely@redhat.com>
814 * testsuite/20_util/is_constructible/value-2.cc: Fix test to account
815 for changes due to parenthesized aggregate-initialization in C++20.
816 * testsuite/20_util/time_point/cons/81468.cc: Fix test to not clash
817 with std::chrono::sys_time in C++20.
819 * include/bits/stl_iterator.h (reverse_iterator): Use requires-clause
820 to constrain C++20 versions of comparison operators. Fix backwards
821 logic of relational operators.
822 (move_iterator): Use requires-clause to constrain comparison operators
823 in C++20. Do not declare non-standard same-type overloads for C++20.
824 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Check result
825 of comparisons and check using greedy_ops type.
826 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Likewise.
827 * testsuite/24_iterators/move_iterator/greedy_ops.cc: Remove redundant
828 main function from compile-only test.
829 * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise.
831 2020-03-27 Jonathan Wakely <jwakely@redhat.com>
833 * include/bits/range_cmp.h (__cpp_lib_ranges): Define.
834 * include/bits/stl_iterator.h: Check value of __cpp_concepts so that
835 C++20 concepts are required.
836 * include/bits/stl_iterator_base_types.h: Likewise.
837 * include/std/concepts: Likewise.
838 * include/std/version: Likewise.
839 * testsuite/std/ranges/headers/ranges/synopsis.cc: Check feature test
842 * include/bits/stl_iterator.h (reverse_iterator::iterator_concept)
843 (reverse_iterator::iterator_category): Define for C++20.
844 (reverse_iterator): Define comparison operators correctly for C++20.
845 (__normal_iterator): Add constraints to comparison operators for C++20.
846 (move_iterator::operator++(int)) [__cpp_lib_concepts]: Define new
847 overload for input iterators.
848 (move_iterator): Add constraints to comparison operators for C++20.
849 Define operator<=> for C++20.
850 * testsuite/24_iterators/move_iterator/input_iterator.cc: New test.
851 * testsuite/24_iterators/move_iterator/move_only.cc: New test.
852 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: New test.
853 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: New test.
855 * include/bits/iterator_concepts.h (__detail::__decay_copy)
856 (__detail::__member_begin, __detail::__adl_begin): Move here from
857 <bits/range_access.h>.
858 (__detail::__ranges_begin, __detail::__range_iter_t): Define.
859 * bits/range_access.h (__cust_access::__decay_copy)
860 (__cust_access::__member_begin, __cust_access::__adl_begin): Move to
861 <bits/iterator_concepts.h>.
862 (ranges::iterator_t): Use __detail::__range_iter_t.
863 * include/bits/stl_iterator.h (back_insert_iterator): Simplify
864 conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members.
865 (front_insert_iterator): Likewise.
866 (insert_iterator): Implement changes from P0896R4 for C++20.
867 * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test.
868 * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test.
869 * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust
870 for inclusion in synopsis_c++20.cc which expects different signatures
871 for some function templates.
872 * testsuite/24_iterators/insert_iterator/constexpr.cc: New test.
874 * include/std/type_traits (__is_array_convertible): Move definition
875 to immediately after is_convertible.
877 2020-03-26 Jonathan Wakely <jwakely@redhat.com>
879 * include/std/chrono (chrono::days, chrono::weeks, chrono::years)
880 (chrono::months, chrono::sys_days, chrono::local_t)
881 (chrono::local_time, chrono::local_seconds, chrono::local_days):
883 (chrono::time_point): Add missing static assert.
884 * testsuite/20_util/time_point/requirements/duration_neg.cc: New test.
885 * testsuite/std/time/clock/file/overview.cc: New test.
886 * testsuite/std/time/clock/file/members.cc: New test.
887 * testsuite/std/time/syn_c++20.cc: New test.
889 2020-03-25 Mike Crowe <mac@mcrowe.com>
891 * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
893 * testsuite/30_threads/shared_timed_mutex/try_lock_until/2.cc: New
896 2020-03-25 Jonathan Wakely <jwakely@redhat.com>
898 * include/bits/fs_fwd.h (filesystem::__file_clock): Move to ...
899 * include/std/chrono (filesystem::__file_clock): Here.
900 (filesystem::__file_clock::from_sys, filesystem::__file_clock::to_sys):
901 Define public member functions for C++20.
902 (is_clock, is_clock_v): Define traits for C++20.
903 * include/std/condition_variable (condition_variable::wait_until): Add
904 check for valid clock.
905 * include/std/future (_State_baseV2::wait_until): Likewise.
906 * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Likewise.
907 * include/std/shared_mutex (shared_timed_mutex::try_lock_shared_until):
909 * include/std/thread (this_thread::sleep_until): Likewise.
910 * testsuite/30_threads/condition_variable/members/2.cc: Qualify
911 slow_clock with new namespace.
912 * testsuite/30_threads/condition_variable/members/clock_neg.cc: New
914 * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
916 * testsuite/30_threads/future/members/clock_neg.cc: New test.
917 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
918 Qualify slow_clock with new namespace.
919 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/
920 clock_neg.cc: New test.
921 * testsuite/30_threads/shared_future/members/clock_neg.cc: New
923 * testsuite/30_threads/shared_lock/locking/clock_neg.cc: New test.
924 * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
926 * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Qualify
927 slow_clock with new namespace.
928 * testsuite/30_threads/timed_mutex/try_lock_until/4.cc: Likewise.
929 * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc: New
931 * testsuite/30_threads/unique_lock/locking/clock_neg.cc: New test.
932 * testsuite/std/time/traits/is_clock.cc: New test.
933 * testsuite/util/slow_clock.h (slow_clock): Move to __gnu_test
936 2020-03-21 Jonathan Wakely <jwakely@redhat.com>
939 * include/experimental/bits/fs_path.h (path::generic_string<C,T,A>()):
940 * testsuite/experimental/filesystem/path/generic/generic_string.cc:
941 Improve test coverage.
944 * include/bits/fs_path.h (path::_S_str_convert): Replace first
945 parameter with basic_string_view so that strings with different
946 allocators can be accepted.
947 (path::generic_string<C,T,A>()): Use basic_string object that uses the
948 right allocator type.
949 * testsuite/27_io/filesystem/path/generic/94242.cc: New test.
950 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Improve
953 2020-03-18 Jonathan Wakely <jwakely@redhat.com>
956 * include/std/type_traits (__is_nt_default_constructible_atom): Remove.
957 (__is_nt_default_constructible_impl): Remove.
958 (__is_nothrow_default_constructible_impl): Remove.
959 (__is_nt_constructible_impl): Add bool template parameter. Adjust
960 partial specializations.
961 (__is_nothrow_constructible_impl): Replace class template with alias
963 (is_nothrow_default_constructible): Derive from alias template
964 __is_nothrow_constructible_impl instead of
965 __is_nothrow_default_constructible_impl.
966 * testsuite/20_util/is_nothrow_constructible/94003.cc: New test.
968 * include/std/stop_token (stop_token::_Stop_state_ref): Define
969 comparison operators explicitly if the compiler won't synthesize them.
971 * include/bits/stl_algobase.h (__lexicographical_compare_aux): Check
972 __cpp_lib_concepts before using iter_reference_t.
973 * include/bits/stream_iterator.h (istream_iterator): Check
974 __cpp_lib_concepts before using default_sentinel_t.
975 * include/bits/streambuf_iterator.h (istreambuf_iterator): Likewise.
978 * include/experimental/executor (executor::executor(Executor)): Call
979 make_shared directly instead of _M_create. Create _Tgt1 object.
980 (executor::executor(allocator_arg_t, const ProtoAlloc&, Executor)):
981 Call allocate_shared directly instead of _M_create. Create _Tgt2
983 (executor::target_type): Add cast needed for new _Tgt interface.
984 (executor::target): Define when RTTI is disabled. Use _Tgt::_M_func.
985 (executor::_Tgt): Define the same interface whether RTTI is enabled or
987 (executor::_Tgt::target_type, executor::_Tgt::target): Do not use
988 std::type_info in the interface.
989 (executor::_Tgt::_M_func): Add data member.
990 (executor::_TgtImpl): Replace with _Tgt1 and _Tgt2 class templates.
991 (executor::_Tgt1::_S_func): Define function to access target without
993 (executor::_M_create): Remove.
994 (operator==, operator!=): Simplify comparisons for executor.
995 * include/experimental/socket (is_error_code_enum<socket_errc>):
996 Define specialization before use.
997 * testsuite/experimental/net/executor/1.cc: New test.
999 2020-03-16 Jonathan Wakely <jwakely@redhat.com>
1002 * include/experimental/executor (service_already_exists): Add default
1003 constructor. Declare make_service to be a friend.
1004 * testsuite/experimental/net/execution_context/make_service.cc: New
1007 2020-03-12 Jonathan Wakely <jwakely@redhat.com>
1009 * testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Do not pass
1010 a null pointer to functions with nonnull(1) attribute.
1012 2020-03-11 Patrick Palka <ppalka@redhat.com>
1014 * include/std/ranges (split_view::_OuterIter::_OuterIter): Typo fix,
1015 'address' -> 'std::__addressof'.
1016 * testsuite/std/ranges/adaptors/split.cc: Test taking the split_view of
1017 a non-forward input_range.
1018 * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Make
1019 default constructor protected instead of deleted, like with
1020 input_iterator_wrapper.
1021 (test_range::iterator): Add comment explaining that this type is used
1022 only when the underlying wrapper is input_iterator_wrapper or
1023 output_iterator_wrapper. Remove delegating defaulted constructor so
1024 that the inherited default constructor is used instead.
1026 LWG 3286 ranges::size is not required to be valid after a call to
1027 ranges::begin on an input range
1028 * include/std/ranges (subrange::subrange): Split single-argument
1029 constructor into two, one constrained by _S_store_size and another by
1031 (take_view::begin): Call size() before calling ranges::begin(_M_base).
1032 * testsuite/std/ranges/adaptors/lwg3286.cc: New test.
1033 * testsuite/std/ranges/subrange/lwg3286.cc: New test.
1035 2020-03-10 Jonathan Wakely <jwakely@redhat.com>
1037 * include/std/ranges (split_view::_OuterIter::__at_end): Use __current
1038 instead of _M_current.
1039 (split_view::_OuterIter::operator++): Likewise.
1041 * include/std/ranges (transform_view::_Iterator::__iter_move): Remove.
1042 (transform_view::_Iterator::operator*): Add noexcept-specifier.
1043 (transform_view::_Iterator::iter_move): Inline __iter_move body here.
1044 (split_view::_OuterIter::__current): Add noexcept.
1045 (split_view::_InnerIter::__iter_swap): Remove.
1046 (split_view::_InnerIter::__iter_move): Remove.
1047 (split_view::_InnerIter::_M_i_current): New accessors.
1048 (split_view::_InnerIter::__at_end): Use _M_i_current().
1049 (split_view::_InnerIter::operator*): Likewise.
1050 (split_view::_InnerIter::operator++): Likewise.
1051 (iter_move(const _InnerIter&)): Likewise.
1052 (iter_swap(const _InnerIter&, const _InnerIter&)): Likewise.
1053 * testsuite/std/ranges/adaptors/split.cc: Check noexcept-specifier
1054 for iter_move and iter_swap on split_view's inner iterator.
1057 * include/std/ranges (ranges::transform_view::_Iterator::iter_move):
1058 Change expression in noexcept-specifier to match function body.
1060 * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Add
1061 comment explaining multiple dg-do directives.
1062 * testsuite/24_iterators/ostream_iterator/1.cc: Fix do-do directive
1063 so test is run as well as compiled.
1065 2020-03-09 Jonathan Wakely <jwakely@redhat.com>
1068 * src/c++17/fs_path.cc (path::operator+=(const path&)): Add kluge to
1069 handle concatenations that change the type of the first component.
1070 (path::operator+=(basic_string_view<value_type>)): Likewise.
1071 * testsuite/27_io/filesystem/path/concat/94063.cc: New test.
1073 2020-03-06 Patrick Palka <ppalka@redhat.com>
1075 * include/std/ranges (join_view::_Sentinel<_Const>): Befriend
1076 join_view::_Sentinel<!_Const>.
1077 * testsuite/std/ranges/adaptors/join.cc: Augment test.
1080 * include/bits/range_access.h (__cust_access::_Empty::operator()):
1081 Declare return type to be bool instead of auto.
1082 * testsuite/std/ranges/adaptors/93978.cc: New test.
1084 2020-03-06 Jonathan Wakely <jwakely@redhat.com>
1087 * include/std/shared_mutex [!PTHREAD_RWLOCK_INITIALIZER]
1088 (__shared_mutex_pthread::__shared_mutex_pthread()): Remove incorrect
1089 second argument to __glibcxx_rwlock_init.
1090 * testsuite/30_threads/shared_timed_mutex/94069.cc: New test.
1093 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Adjust
1094 test to not fail due to PR 94063.
1095 * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
1096 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
1098 2020-03-06 Andreas Krebbel <krebbel@linux.ibm.com>
1100 * src/c++11/system_error.cc: Omit the ENOTSUP case statement if it
1103 2020-03-05 Jonathan Wakely <jwakely@redhat.com>
1105 * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
1106 * testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
1107 * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
1108 * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
1109 for return value, and in comparison.
1110 * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
1113 * include/std/string_view: Include <bits/ostream_insert.h>.
1114 * testsuite/21_strings/basic_string_view/inserters/94051.cc: New test.
1116 2020-03-04 Jonathan Wakely <jwakely@redhat.com>
1118 * include/bits/cpp_type_traits.h (__memcpyable): Fix comment.
1120 2020-03-04 Patrick Palka <ppalka@redhat.com>
1123 * include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine
1124 condition for when to use memset, making sure to additionally check that
1125 the output pointer's value type is a non-volatile byte type. Instead of
1126 requiring that the fill type is a byte type, just require that it's an
1128 * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
1130 * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
1132 * testsuite/25_algorithms/fill/94013.cc: Uncomment part of test that was
1133 blocked by PR 94017.
1134 * testsuite/25_algorithms/fill/94017.cc: New test.
1135 * testsuite/25_algorithms/fill_n/94017.cc: New test.
1137 LWG 3355 The memory algorithms should support move-only input iterators
1139 * include/bits/ranges_uninitialized.h
1140 (__uninitialized_copy_fn::operator()): Use std::move to avoid attempting
1141 to copy __ifirst, which could be a move-only input iterator. Use
1142 operator- instead of ranges::distance to compute distance from a sized
1144 (__uninitialized_copy_n_fn::operator()): Likewise.
1145 (__uninitialized_move_fn::operator()): Likewise.
1146 (__uninitialized_move_n_fn::operator()): Likewise.
1147 (__uninitialized_destroy_fn::operator()): Use std::move to avoid
1148 attempting to copy __first.
1149 (__uninitialized_destroy_n_fn::operator()): Likewise.
1150 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1152 * .../specialized_algorithms/uninitialized_copy/constrained.cc:
1154 * .../specialized_algorithms/uninitialized_move/constrained.cc:
1157 * testsuite/util/testsuite_iterators.h (test_range::get_iterator): Make
1158 protected instead of private.
1159 (test_sized_range_sized_sent): New.
1161 * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy):
1162 New testsuite iterator.
1163 * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it.
1164 * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
1166 * include/bits/ranges_uninitialized.h
1167 (uninitialized_copy_fn::operator()): Pass a reference type as the first
1168 argument to is_nothrow_assignable_v.
1169 (uninitialized_copy_fn::operator()): Likewise.
1170 (uninitialized_move_fn::operator()): Likewise. Return an in_out_result
1171 with the input iterator stripped of its move_iterator.
1172 (uninitialized_move_n_fn::operator()): Likewise.
1173 (uninitialized_fill_fn::operator()): Pass a reference type as the first
1174 argument to is_nothrow_assignable_v.
1175 (uninitialized_fill_n_fn::operator()): Likewise.
1177 2020-03-03 Jonathan Wakely <jwakely@redhat.com>
1180 * include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New
1181 traits to control when to use memmove and memcmp optimizations.
1182 (__is_nonvolatile_trivially_copyable): New helper trait.
1183 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not
1184 use memcmp optimization with volatile data.
1185 * include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable.
1186 (__copy_or_move, __copy_or_move_backward): Use __memcpyable.
1187 * include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable.
1188 (__copy_move_backward_a2): Likewise.
1189 (__equal_aux1): Use __memcmpable.
1190 (__lexicographical_compare_aux): Do not use memcmp optimization with
1192 * testsuite/25_algorithms/copy/94013.cc: New test.
1193 * testsuite/25_algorithms/copy_backward/94013.cc: New test.
1194 * testsuite/25_algorithms/equal/94013.cc: New test.
1195 * testsuite/25_algorithms/fill/94013.cc: New test.
1196 * testsuite/25_algorithms/lexicographical_compare/94013.cc: New test.
1197 * testsuite/25_algorithms/move/94013.cc: New test.
1198 * testsuite/25_algorithms/move_backward/94013.cc: New test.
1200 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
1201 Avoid redundant iterator comparisons (LWG 3410).
1203 2020-03-02 Jonathan Wakely <jwakely@redhat.com>
1206 * include/bits/stl_algobase.h (__memcmp): Allow pointer types to
1208 * testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test.
1210 * include/std/ranges (__detail::__maybe_empty_t): Rename to
1212 (__adaptor::_RangeAdaptor, join_view, split_view): Use new name.
1214 * include/bits/ranges_algo.h (shift_right): Add 'typename' to
1217 2020-03-01 H.J. Lu <hongjiu.lu@intel.com>
1219 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
1221 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1223 * testsuite/17_intro/headers/c++1998/charset.cc: Skip on *-*-hpux*.
1224 * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
1225 * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
1226 * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
1227 * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
1229 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
1230 Add libatomic option.
1231 * testsuite/30_threads/jthread/jthread.cc: Likewise.
1233 2020-02-29 François Dumont <fdumont@gcc.gnu.org>
1235 * include/bits/stl_algo.h
1236 (__find_if, __count_if, __is_permutation, std::is_permutation): Move...
1237 * include/bits/stl_algobase.h: ...here.
1238 * include/bits/hashtable_policy.h: Remove <bits/stl_algo.h> include.
1240 2020-02-29 John David Anglin <danglin@gcc.gnu.org>
1242 * testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
1244 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
1246 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
1247 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
1248 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
1249 * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
1250 * testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
1251 * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
1252 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
1256 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
1258 2020-02-28 Patrick Palka <ppalka@redhat.com>
1261 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
1262 Fix condition for when to use memcmp, making it consistent with the
1263 corresponding condition used in std::lexicographical_compare.
1264 * testsuite/25_algorithms/lexicographical_compare/93972.cc: New test.
1266 * testsuite/26_numerics/headers/numeric/synopsis.cc: Add signatures for
1267 functions introduced in C++11, C++17 and C++2a. Add 'constexpr' to
1268 existing signatures for C++2a.
1270 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1272 * testsuite/24_iterators/range_operations/advance_debug_neg.cc: Run
1273 test instead of just compiling it.
1275 2020-02-28 Patrick Palka <ppalka@redhat.com>
1277 * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to false
1278 whenever the underlying range models common_range.
1280 * include/std/ranges (__detail::_CachedPosition): New struct.
1281 (views::filter_view::_S_needs_cached_begin): New member variable.
1282 (views::filter_view::_M_cached_begin): New member variable.
1283 (views::filter_view::begin): Use _M_cached_begin to cache its
1285 (views::drop_view::_S_needs_cached_begin): New static member variable.
1286 (views::drop_view::_M_cached_begin): New member variable.
1287 (views::drop_view::begin): Use _M_cached_begin to cache its result
1288 when _S_needs_cached_begin.
1289 (views::drop_while_view::_M_cached_begin): New member variable.
1290 (views::drop_while_view::begin): Use _M_cached_begin to cache its
1292 (views::reverse_view::_S_needs_cached_begin): New static member
1294 (views::reverse_view::_M_cached_begin): New member variable.
1295 (views::reverse_view::begin): Use _M_cached_begin to cache its result
1296 when _S_needs_cached_begin.
1297 * testsuite/std/ranges/adaptors/drop.cc: Augment test to check that
1298 drop_view::begin caches its result.
1299 * testsuite/std/ranges/adaptors/drop_while.cc: Augment test to check
1300 that drop_while_view::begin caches its result.
1301 * testsuite/std/ranges/adaptors/filter.cc: Augment test to check that
1302 filter_view::begin caches its result.
1303 * testsuite/std/ranges/adaptors/reverse.cc: Augment test to check that
1304 reverse_view::begin caches its result.
1306 2020-02-28 Jonathan Wakely <jwakely@redhat.com>
1308 * testsuite/27_io/filesystem/operations/last_write_time.cc: Fixes for
1309 filesystems that silently truncate timestamps.
1310 * testsuite/experimental/filesystem/operations/last_write_time.cc:
1313 * testsuite/21_strings/basic_string/cons/char/1.cc: Disable
1314 -Wstringop-overflow warnings.
1316 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1318 * testsuite/lib/libstdc++.exp (v3_target_compile): Add
1319 -fdiagnostics-urls=never to options.
1321 2020-02-27 Patrick Palka <ppalka@redhat.com>
1323 * include/std/ranges (transform_view::_Iterator<_Const>): Befriend
1325 (transform_view::_Sentinel<_Const>): Befriend _Sentinel<!_Const>.
1326 (take_view::_Sentinel<_Const>): Likewise.
1327 (take_while_view::_Sentinel<_Const>): Likewise.
1328 (split_view::_OuterIter<_Const>): Befriend _OuterIter<!_Const>.
1329 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1330 * testsuite/std/ranges/adaptors/take.cc: Augment test.
1331 * testsuite/std/ranges/adaptors/take_while.cc: Augment test.
1332 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1334 * testsuite/25_algorithms/copy/constrained.cc: Don't assume that the
1335 base() of a vector<>::iterator is a pointer.
1336 * testsuite/25_algorithms/copy_backward/constrained.cc: Likewise.
1337 * testsuite/25_algorithms/move/constrained.cc: Likewise.
1338 * testsuite/25_algorithms/move_backward/constrained.cc: Likewise.
1339 * testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data()
1341 * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
1342 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise.
1343 * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
1344 * testsuite/25_algorithms/sort/constrained.cc: Likewise.
1345 * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
1347 2020-02-27 Jonathan Wakely <jwakely@redhat.com>
1349 * include/debug/array (operator<=>): Define for C++20.
1350 * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
1351 Adjust dg-error line numbers.
1352 * testsuite/23_containers/array/tuple_interface/
1353 tuple_element_debug_neg.cc: Likewise.
1355 * testsuite/23_containers/span/back_assert_neg.cc: Add #undef before
1356 defining _GLIBCXX_ASSERTIONS.
1357 * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
1358 * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
1359 * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
1360 * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
1361 * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
1362 * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
1363 * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise.
1364 * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise.
1365 * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise.
1366 * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise.
1367 * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise.
1368 * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
1370 * include/debug/string (__gnu_debug::basic_string::insert): Fix for
1371 C++98 where the member function of the base class returns void.
1373 * testsuite/util/testsuite_iterators.h (forward_iterator_wrapper): Add
1374 equality comparisons that support value-initialized iterators.
1376 * include/bits/boost_concept_check.h (__function_requires): Add
1377 _GLIBCXX14_CONSTEXPR.
1378 * testsuite/25_algorithms/min/concept_checks.cc: New test.
1380 2020-02-26 Patrick Palka <ppalka@redhat.com>
1383 * include/std/ranges (split_view::_InnerIter::operator==): Compare
1384 the operands' _M_i rather than their _M_i.current().
1385 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1387 P1645R1 constexpr for <numeric> algorithms
1388 * include/bits/stl_numeric.h (iota, accumulate, inner_product,
1389 partial_sum, adjacent_difference): Make conditionally constexpr for
1391 * include/std/numeric (__cpp_lib_constexpr_numeric): Define this feature
1393 (reduce, transform_reduce, exclusive_scan, inclusive_scan,
1394 transform_exclusive_scan, transform_inclusive_scan): Make conditionally
1395 constexpr for C++20.
1396 * include/std/version (__cpp_lib_constexpr_numeric): Define.
1397 * testsuite/26_numerics/accumulate/constexpr.cc: New test.
1398 * testsuite/26_numerics/adjacent_difference/constexpr.cc: Likewise.
1399 * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
1400 * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
1401 * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
1402 * testsuite/26_numerics/iota/constexpr.cc: Likewise.
1403 * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
1404 * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
1405 * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc: Likewise.
1406 * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc: Likewise.
1407 * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
1409 2020-02-26 Jonathan Wakely <jwakely@redhat.com>
1411 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Declare
1412 variables in smaller scope and avoid calling ranges::distance when we
1413 know they are pointers. Remove statically-unreachable use of
1414 __builtin_unreachable().
1415 * include/bits/stl_algobase.h (__lexicographical_compare::__lc):
1418 * include/std/ranges (__detail::__maybe_empty_t): Define new helper
1420 (__detail::__maybe_const_t): Likewise.
1421 (__adaptor::_RangeAdaptor): Use __maybe_empty_t.
1422 (transform_view, take_view, take_while_view, elements_view): Use
1424 (join_view, split_view): Use both.
1426 2020-02-25 Patrick Palka <ppalka@redhat.com>
1428 LWG 3397 basic_istream_view::iterator should not provide
1430 * include/std/ranges (basic_istream_view:_Iterator::iterator_category):
1432 (basic_istream_view:_Iterator::iterator_concept): ... this.
1433 * testsuite/std/ranges/istream_view.cc: Augment test.
1435 LWG 3325 Constrain return type of transformation function for
1437 * include/std/ranges (transform_view): Constrain the return type of the
1438 transformation function as per LWG 3325.
1439 * testsuite/std/ranges/adaptors/lwg3325_neg.cc: New test.
1441 LWG 3313 join_view::_Iterator::operator-- is incorrectly constrained
1442 * include/std/ranges (join_view::_Iterator::operator--): Require that
1443 range_reference_t<_Base> models common_range.
1444 * testsuite/std/ranges/adaptors/lwg3313_neg.cc: New test.
1446 LWG 3301 transform_view::_Iterator has incorrect iterator_category
1447 * include/std/ranges (transform_view::_Iterator::_S_iter_cat): Adjust
1448 determination of iterator_category as per LWG 3301.
1449 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
1451 LWG 3292 iota_view is under-constrained
1452 * include/std/ranges (iota_view): Require that _Winc models semiregular
1454 * testsuite/std/ranges/iota/lwg3292_neg.cc: New test.
1456 2020-02-25 Jonathan Wakely <jwakely@redhat.com>
1458 * include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove
1459 during constant evaluation. Call __builtin_memmove directly instead of
1461 (__copy_or_move_backward): Likewise.
1462 * include/bits/stl_algobase.h (__memmove): Remove.
1463 (__copy_move<M, true, random_access_iterator_tag>::__copy_m)
1464 (__copy_move_backward<M, true, random_access_iterator_tag>::__copy_m):
1465 Use __builtin_memmove directly instead of __memmove.
1466 (__copy_move_a2): Do not use memmove during constant evaluation.
1467 (__copy_move_backward_a2): Use _IsMove constant to select correct
1468 __copy_move_backward specialization.
1469 * testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies
1470 begin turned into moves during constant evaluation.
1472 * testsuite/25_algorithms/move_backward/93872.cc: Add test left out of
1476 * include/bits/stl_algobase.h (__memmove): Cast away const before
1477 doing move assignment.
1478 * testsuite/25_algorithms/move/93872.cc: New test.
1479 * testsuite/25_algorithms/move_backward/93872.cc: New test.
1481 2020-02-24 Patrick Palka <ppalka@redhat.com>
1484 * include/bits/ranges_algobase.h (__copy_or_move,
1485 __copy_or_move_backward): Don't inspect the iter_value_t of the output
1486 iterator, instead inspect its iterator_traits directly.
1487 * include/bits/stl_iterator.h (back_insert_iterator::container):
1488 Conditionally initialize.
1489 (back_insert_iterator::difference_type): Conditionally define.
1490 (back_insert_iterator::back_insert_iterator): Conditionally define this
1491 default constructor.
1492 (front_insert_iterator::container): Conditionally initialize.
1493 (front_insert_iterator::difference_type): Conditionally define.
1494 (front_insert_iterator::front_insert_iterator): Conditionally define
1495 this default constructor.
1496 * 24_iterators/back_insert_iterator/pr93884.cc: New test.
1497 * 24_iterators/front_insert_iterator/pr93884.cc: New test.
1499 P0769R2 Add shift to <algorithm>
1500 * include/bits/ranges_algo.h (shift_left, shift_right): New.
1501 * testsuite/25_algorithms/shift_left/1.cc: New test.
1502 * testsuite/25_algorithms/shift_right/1.cc: New test.
1504 2020-02-24 Jonathan Wakely <jwakely@redhat.com>
1506 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1507 Make noexcept-specifier conditional.
1508 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: Check
1511 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
1513 (operator==(istream_iterator, default_sentinel_t)): Add operator.
1514 (ostream_iterator::difference_type): Define to ptrdiff_t for C++20.
1515 * include/bits/streambuf_iterator.h
1516 (istreambuf_iterator(default_sentinel_t)): Add constructor.
1517 (operator==(istreambuf_iterator, default_sentinel_t)): Add operator.
1518 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
1520 * testsuite/24_iterators/istream_iterator/sentinel.cc: New test.
1521 * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
1523 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
1525 * include/std/ranges (__deep_const_range, __enable_view_impl): Remove.
1526 (ranges::enable_view): Simplify (LWG 3326).
1527 * include/bits/range_access.h (ranges::enable_view): Declare.
1528 * include/bits/regex.h (__enable_view_impl): Remove partial
1530 * include/bits/stl_multiset.h (__enable_view_impl): Likewise.
1531 * include/bits/stl_set.h (__enable_view_impl): Likewise.
1532 * include/bits/unordered_set.h (__enable_view_impl): Likewise.
1533 * include/debug/multiset.h (__enable_view_impl): Likewise.
1534 * include/debug/set.h (__enable_view_impl): Likewise.
1535 * include/debug/unordered_set (__enable_view_impl): Likewise.
1536 * include/experimental/string_view (ranges::enable_view): Define
1537 partial specialization.
1538 * include/std/span (ranges::enable_view): Likewise.
1539 * include/std/string_view (ranges::enable_view): Likewise.
1540 * testsuite/std/ranges/view.cc: Check satisfaction of updated concept.
1542 2020-02-21 Jonathan Wakely <jwakely@redhat.com>
1544 * include/std/optional (operator<=>(optional<T>, optional<U>))
1545 (operator<=>(optional<T>, nullopt), operator<=>(optional<T>, U)):
1547 * include/std/tuple (__tuple_cmp): New helper function for <=>.
1548 (operator<=>(tuple<T...>, tuple<U>...)): Define for C++20.
1549 * include/std/variant (operator<=>(variant<T...>, variant<T...>))
1550 (operator<=>(monostate, monostate)): Define for C++20.
1551 * testsuite/20_util/optional/relops/three_way.cc: New test.
1552 * testsuite/20_util/tuple/comparison_operators/three_way.cc: New test.
1553 * testsuite/20_util/variant/89851.cc: Move to ...
1554 * testsuite/20_util/variant/relops/89851.cc: ... here.
1555 * testsuite/20_util/variant/90008.cc: Move to ...
1556 * testsuite/20_util/variant/relops/90008.cc: ... here.
1557 * testsuite/20_util/variant/relops/three_way.cc: New test.
1559 2020-02-20 Patrick Palka <ppalka@redhat.com>
1561 * include/std/ranges (views::__adaptor::__maybe_refwrap): New utility
1563 (views::__adaptor::_RangeAdaptor::operator()): Add comments. Use
1564 __maybe_refwrap to capture lvalue references by reference, and then use
1565 unwrap_reference_t to forward the by-reference captures as references.
1566 * testsuite/std/ranges/adaptors/split.cc: Augment test.
1567 * testsuite/std/ranges/adaptors/split_neg.cc: New test.
1569 * include/std/ranges (iota_view): Forward declare _Sentinel.
1570 (iota_view::_Iterator): Befriend _Sentinel.
1571 (iota_view::_Sentinel::_M_equal): New member function.
1572 (iota_view::_Sentinel::operator==): Use it.
1573 (views::_Iota::operator()): Forward __f using the correct type.
1574 * testsuite/std/ranges/access/ssize.cc (test06): Don't call views::iota
1575 with integers of different signedness, to appease iota_view's deduction
1577 * testsuite/std/ranges/iota/iota_view.cc: Augment test.
1579 2020-02-20 Jonathan Wakely <jwakely@redhat.com>
1581 * include/bits/range_access.h (ranges::begin): Reject array of
1583 (ranges::end, ranges::size): Require arrays to be bounded.
1584 (ranges::data): Require lvalue or borrowed_range.
1585 (ranges::iterator_t): Remove constraint.
1586 * testsuite/std/ranges/access/begin.cc: Do not check array of
1588 * testsuite/std/ranges/access/begin_neg.cc: New test.
1589 * testsuite/std/ranges/access/end_neg.cc: Adjust expected error.
1590 * testsuite/std/ranges/access/size_neg.cc: Adjust expected error.
1591 * testsuite/std/ranges/access/ssize.cc: Do not check array of
1594 * include/std/system_error (error_category::operator<=>)
1595 (operator<=>(const error_code&, const error_code&))
1596 (operator<=>(const error_condition&, const error_condition&)): Define
1598 * testsuite/19_diagnostics/error_category/operators/less.cc: New test.
1599 * testsuite/19_diagnostics/error_category/operators/three_way.cc: New
1601 * testsuite/19_diagnostics/error_code/operators/equal.cc: Remove
1603 * testsuite/19_diagnostics/error_code/operators/less.cc: New test.
1604 * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Remove
1606 * testsuite/19_diagnostics/error_code/operators/three_way.cc: New test.
1607 * testsuite/19_diagnostics/error_condition/operators/equal.cc: Remove
1609 * testsuite/19_diagnostics/error_condition/operators/less.cc: New test.
1610 * testsuite/19_diagnostics/error_condition/operators/not_equal.cc:
1611 Remove incorrect comment.
1612 * testsuite/19_diagnostics/error_condition/operators/three_way.cc: New
1615 * libsupc++/typeinfo (type_info::operator!=): Remove for C++20.
1617 * include/std/thread (thread::id::operator<=>): Define for C++20.
1618 * testsuite/30_threads/thread/id/70294.cc: Do not take addresses of
1619 functions in namespace std.
1620 * testsuite/30_threads/thread/id/operators_c++20.cc: New test.
1622 2020-02-19 Patrick Palka <ppalka@redhat.com>
1624 * testsuite/std/ranges/adaptors/split.cc (test03): Don't include the
1625 null terminator of the underlying string as part of the test_range.
1626 (main): Call test03.
1628 2020-02-19 Jonathan Wakely <jwakely@redhat.com>
1630 * include/bits/stl_iterator.h (common_iterator): Add copyable<I>
1631 requirement (LWG 3385).
1632 * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust
1633 expected declaration.
1635 * include/std/ranges (take_while_view, drop_view, drop_while_view)
1636 (elements_view:_Iterator): Initialize data members (LWG 3364).
1638 * libsupc++/compare (three_way_comparable): Remove always-false check
1639 that should have been removed with weak_equality (P1959R0).
1640 (three_way_comparable_with): Likewise. Reorder requirements (LWG 3360).
1642 * include/std/concepts (__detail::__partially_ordered_with): Move here
1644 (totally_ordered, totally_ordered_with): Use __partially_ordered_with
1645 to simplify definition (LWG 3331).
1646 * libsupc++/compare (__detail::__partially_ordered_with): Move to
1649 * include/std/concepts (totally_ordered_with): Remove redundant
1650 requirement (LWG 3329).
1652 * include/std/ranges (__detail::__convertible_to_non_slicing): New
1654 (__detail::__pair_like_convertible_to): Remove.
1655 (__detail::__pair_like_convertible_from): Add requirements for
1656 non-slicing conversions.
1657 (subrange): Constrain constructors with __convertible_to_non_slicing.
1658 Remove constructors from pair-like types. Add new deduction guide.
1659 * testsuite/std/ranges/subrange/lwg3282_neg.cc: New test.
1661 * include/bits/iterator_concepts.h (iter_move): Add declaration to
1662 prevent unqualified lookup finding a suitable declaration (LWG 3247).
1664 * include/std/memory_resource (polymorphic_allocator::allocate)
1665 (polymorphic_allocator::allocate_object): Change type of exception to
1666 bad_array_new_length (LWG 3237).
1667 * testsuite/20_util/polymorphic_allocator/lwg3237.cc: New test.
1669 * include/std/type_traits (__cpp_lib_unwrap_ref): Define (LWG 3348).
1670 * include/std/version (__cpp_lib_unwrap_ref): Likewise.
1671 * testsuite/20_util/unwrap_reference/1.cc: Check macro.
1672 * testsuite/20_util/unwrap_reference/3.cc: New test.
1674 * include/std/numeric (midpoint(T8, T*)): Do not check for complete
1675 type during overload resolution, use static assert instead (LWG 3200).
1676 * testsuite/26_numerics/midpoint/pointer.cc: Do not test with
1678 * testsuite/26_numerics/midpoint/pointer_neg.cc: New test.
1680 * include/std/span (span(T (&)[N])): Use non-deduced context to
1681 prevent first parameter from interfering with class template argument
1682 deduction (LWG 3369).
1683 * testsuite/23_containers/span/deduction.cc: Add missing 'const'.
1684 * testsuite/23_containers/span/lwg3255.cc: Check for construction from
1687 * include/std/span (span::const_iterator, span::const_reverse_iterator)
1688 (span::cbegin(), span::cend(), span::crbegin(), span::crend()):
1690 * testsuite/23_containers/span/everything.cc: Replace uses of cbegin
1692 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1694 * testsuite/20_util/specialized_algorithms/uninitialized_copy/
1695 constrained.cc: Likewise.
1696 * testsuite/20_util/specialized_algorithms/
1697 uninitialized_default_construct/constrained.cc: Likewise.
1698 * testsuite/20_util/specialized_algorithms/uninitialized_fill/
1699 constrained.cc: Likewise.
1700 * testsuite/20_util/specialized_algorithms/uninitialized_move/
1701 constrained.cc: Likewise.
1702 * testsuite/20_util/specialized_algorithms/
1703 uninitialized_value_construct/constrained.cc: Likewise.
1705 * include/bits/range_access.h (range_size_t): Define alias template.
1706 * include/std/ranges (all_view): Rename to views::all_t (LWG 3335).
1707 * testsuite/std/ranges/adaptors/filter.cc: Adjust to new name.
1709 * include/std/ranges (filter_view, transform_view, take_view)
1710 (join_view, split_view, reverse_view): Remove commented-out converting
1711 constructors (LWG 3280).
1713 * include/std/memory (uninitialized_construct_using_allocator): Use
1714 std::construct_at (LWG 3321).
1716 * include/std/memory_resource (polymorphic_allocator::allocate_bytes)
1717 (polymorphic_allocator::allocate_object)
1718 (polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304).
1720 LWG 3379. "safe" in several library names is misleading
1721 * include/bits/range_access.h (enable_safe_range): Rename to
1722 enable_borrowed_range.
1723 (__detail::__maybe_safe_range): Rename to __maybe_borrowed_range.
1724 (safe_range): Rename to borrowed_range.
1725 * include/bits/ranges_algo.h: Adjust to use new names.
1726 * include/bits/ranges_algobase.h: Likewise.
1727 * include/bits/ranges_uninitialized.h: Likewise.
1728 * include/std/ranges: Likewise.
1729 (safe_iterator_t): Rename to borrowed_iterator_t.
1730 (safe_subrange_t): Rename to borrowed_subrange_t.
1731 * include/std/span: Adjust to use new names.
1732 * include/std/string_view: Likewise.
1733 * include/experimental/string_view: Likewise.
1734 * testsuite/std/ranges/access/begin.cc: Likewise.
1735 * testsuite/std/ranges/access/cbegin.cc: Likewise.
1736 * testsuite/std/ranges/access/cdata.cc: Likewise.
1737 * testsuite/std/ranges/access/cend.cc: Likewise.
1738 * testsuite/std/ranges/access/crbegin.cc: Likewise.
1739 * testsuite/std/ranges/access/crend.cc: Likewise.
1740 * testsuite/std/ranges/access/data.cc: Likewise.
1741 * testsuite/std/ranges/access/end.cc: Likewise.
1742 * testsuite/std/ranges/access/rbegin.cc: Likewise.
1743 * testsuite/std/ranges/access/rend.cc: Likewise.
1744 * testsuite/std/ranges/safe_range.cc: Likewise.
1745 * testsuite/std/ranges/safe_range_types.cc: Likewise.
1746 * testsuite/util/testsuite_iterators.h: Likewise.
1748 * include/std/ranges (tuple_element<0, const subrange<I, S, K>>)
1749 (tuple_element<1, const subrange<I, S, K>>): Add partial
1750 specializations (LWG 3398).
1751 * testsuite/std/ranges/subrange/tuple_like.cc: New test.
1753 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1754 (__adjacent_find_fn, __remove_if_fn, __remove_copy_if_fn)
1755 (__unique_fn, __unique_copy_fn): Remove redundant conversions to bool.
1757 2020-02-18 Patrick Palka <ppalka@redhat.com>
1759 P1983R0 Wording for GB301, US296, US292, US291, and US283
1760 * include/std/ranges (filter_view::pred): New member function.
1761 (join_view::_Iterator::_Iterator): Remove now-redundant comment since
1762 P1983R0 fixes the highlighted issue in the same way.
1763 (join_view::_Iterator<_Const>): Add friend
1764 join_view::_Iterator<!_Const>.
1765 (join_view::_M_inner): Remove mutable specifier, effectively reverting
1766 the proposed wording changes of P3278.
1767 (join_view::begin): Refine the condition for when to return a const
1769 (split_view::_OuterIter::_OuterIter): Adjust constraints.
1770 * testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred
1773 2020-02-18 Jonathan Wakely <jwakely@redhat.com>
1776 * include/std/ranges (_RangeAdaptor): Add deduction guide.
1777 (filter_view::_Iterator): Add alias _Vp_iter and use in place of
1779 (filter_view::_Iterator::_S_iter_cat()): Add 'typename'.
1780 (transform_view::_Iterator): Add alias _Base_iter and use in place of
1782 (transform_view::_Iterator::_S_iter_cat()): Add 'typename'.
1783 (join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases.
1784 (join_view::_Iterator::_S_iter_cat()): Add 'typename'.
1785 (split_view::_InnerIter::_S_iter_cat()): Likewise.
1787 * testsuite/20_util/integer_comparisons/equal.cc: Fix invalid
1788 assumption that long is wider than int.
1789 * testsuite/20_util/integer_comparisons/greater_equal.cc: Likewise.
1790 * testsuite/20_util/integer_comparisons/less.cc: Likewise.
1791 * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
1792 * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
1794 P1976R2 Fixed-size span construction from dynamic range
1795 * include/std/span (__cpp_lib_span): Update value.
1796 (span(It, size_type), span(It, End)): Make conditionally explicit. Add
1798 (span(R&&), span(const span<OType, OExtent>&)): Likewise and relax
1800 (span::first<Count>(), span::last<Count>()): Use explicit type in
1802 (as_bytes, as_writable_bytes): Likewise.
1803 * include/std/version (__cpp_lib_span): Update value.
1804 * testsuite/23_containers/span/1.cc: Check new value.
1805 * testsuite/23_containers/span/2.cc: Check new value.
1806 * testsuite/23_containers/span/explicit.cc: New test.
1808 * include/std/span (span::__is_compatible_array): Simplify alias
1809 template by using requires-clause.
1810 (span::__is_compatible_ref): New alias template for constraining
1812 (span::__is_compatible_iterator, span::__is_compatible_range): Remove.
1813 (span(It, size_type), span(It, End)): Use __is_compatible_ref.
1814 (span(T(&)[N], span(array<T, N>&), span(const array<T, N>&)): Remove
1815 redundant parentheses.
1816 (span(R&&)): Add missing constraints.
1818 * include/std/span (span): Reorder members and rename template
1819 parameters to match declarations in the C++2a working paper.
1821 P2116R0 Remove tuple-like protocol support from fixed-extent span
1822 * include/std/span (get, tuple_size, tuple_element): Remove.
1823 * testsuite/23_containers/span/everything.cc: Remove checks for
1825 * testsuite/23_containers/span/get_neg.cc: Remove.
1826 * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove.
1827 * testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove.
1828 * testsuite/23_containers/span/tuple_size_neg.cc: Remove.
1830 2020-02-17 Patrick Palka <ppalka@redhat.com>
1832 P2106R0 Alternative wording for GB315 and GB316
1833 * include/bits/ranges_algo.h (in_fun_result): New.
1834 (for_each_result, for_each_n_result): Change into an alias of
1836 (in_in_result): New.
1837 (mismatch_result): Change into an alias of in_in_result.
1838 (copy_if_result): Change into an alias of in_out_result.
1839 (swap_ranges_result): Change into an alias of in_in_result.
1840 (unary_transform_result): Change into an alias of in_out_result.
1841 (in_in_out_result): New.
1842 (binary_transform_result): Change into an alias of in_in_out_result.
1843 (replace_copy_result, replace_copy_if_result, remove_copy_if_result,
1844 remove_copy_result, unique_copy_result, reverse_copy_result,
1845 rotate_copy_result, partial_sort_copy_result): Change into an alias of
1847 (in_out_out_result): New.
1848 (partition_copy_result, merge_result): Change into an alias of
1850 (set_union_result, set_intersection_result): Change into an alias of
1852 (set_difference_result): Change into an alias of in_out_result.
1853 (set_symmetric_difference): Change into an alias of in_in_out_result.
1854 (min_max_result): New.
1855 (minmax_result, minmax_element_result): Change into an alias of
1857 (in_found_result): New.
1858 (next_permutation_result, prev_permutation_result): Change into an alias
1860 (__next_permutation_fn::operator(), __prev_permutation_fn::operator()):
1861 Adjust following changes to next_permutation_result and
1862 prev_permutation_result.
1863 * include/bits/ranges_algobase.h (in_out_result): New.
1864 (copy_result, move_result, move_backward_result, copy_backward_result,
1865 copy_n_result): Change into an alias of in_out_result.
1866 * include/bits/ranges_uninitialized.h (uninitialized_copy_result,
1867 uninitialized_copy_n_result, uninitialized_move_result,
1868 uninitialized_move_n_result): Likewise.
1869 * testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of
1870 structured bindings.
1871 * testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise.
1873 P1243R4 Rangify new algorithms
1874 * include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn,
1875 for_each_n, __sample_fn, sample, __clamp_fn, clamp): New.
1876 * testsuite/25_algorithms/clamp/constrained.cc: New test.
1877 * testsuite/25_algorithms/for_each/constrained.cc: Augment test.
1878 * testsuite/25_algorithms/sample/constrained.cc: New test.
1880 2020-02-17 Jonathan Wakely <jwakely@redhat.com>
1882 P1964R2 Wording for boolean-testable
1883 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1884 (__adjacent_find_fn): Cast result of predicate to bool.
1885 * include/std/concepts (__boolean): Remove.
1886 (__detail::__boolean_testable_impl, __detail::__boolean_testable): Add
1887 new helper concepts.
1888 (__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with)
1889 (predicate): Use __boolean_testable instead of boolean.
1890 * libsupc++/compare (__detail::__partially_ordered, _Synth3way):
1893 P1970R2 Consistency for size() functions: Add ranges::ssize
1894 * include/bits/range_access.h (_SSize, ssize): Define for C++20.
1895 * testsuite/std/ranges/access/ssize.cc: New test.
1897 P1956R1 On the names of low-level bit manipulation functions
1898 * include/bits/hashtable_policy.h: Update comment.
1899 * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename.
1900 (ispow2, ceil2, floor2, log2p1): Likewise.
1901 (__cpp_lib_int_pow2): Add feature test macro.
1902 * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1.
1903 * include/std/memory (assume_aligned): Adjust use of ispow2.
1904 * include/std/version (__cpp_lib_int_pow2): Add.
1905 * libsupc++/new_opa.cc: Adjust use of __ispow2.
1906 * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1.
1907 * testsuite/17_intro/freestanding.cc: Adjust use of ispow2.
1908 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ...
1909 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here.
1910 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ...
1911 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here.
1912 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ...
1913 * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here.
1914 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ...
1915 * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here.
1916 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ...
1917 * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
1919 * include/std/charconv: Add comment.
1921 PR libstdc++/92546 (partial)
1922 * include/bits/random.h (uniform_random_bit_generator): Move definition
1923 to <bits/uniform_int_dist.h>.
1924 * include/bits/ranges_algo.h: Include <bits/uniform_int_dist.h> instead
1926 * include/bits/ranges_algobase.h: Do not include <cmath>.
1927 * include/bits/uniform_int_dist.h (uniform_random_bit_generator):
1929 * include/std/ranges: Do not include <limits>.
1930 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
1932 PR libstdc++/92546 (partial)
1933 * include/Makefile.am: Add new header.
1934 * include/Makefile.in: Regenerate.
1935 * include/bits/int_limits.h: New header.
1936 * include/bits/parse_numbers.h (__select_int::_Select_int): Replace
1937 numeric_limits with __detail::__int_limits.
1938 * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one)
1939 (__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1):
1941 * include/std/charconv (__to_chars_8, __from_chars_binary)
1942 (__from_chars_alpha_to_num, from_chars): Likewise.
1943 * include/std/memory_resource (polymorphic_allocator::allocate)
1944 (polymorphic_allocator::allocate_object): Likewise.
1945 * include/std/string_view (basic_string_view::_S_compare): Likewise.
1946 * include/std/utility (in_range): Likewise.
1947 * testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for
1948 extra error about incomplete type __int_limits<bool>.
1949 * testsuite/26_numerics/bit/bit.count/countl_one.cc: Include <limits>.
1950 * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
1951 * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
1952 * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
1953 * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
1954 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Likewise.
1955 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise.
1956 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1957 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1958 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1959 * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
1960 * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
1962 * python/libstdcxx/v6/printers.py (StdCmpCatPrinter.to_string): Update
1963 value for partial_ordering::unordered.
1965 * include/bits/iterator_concepts.h (indirectly_copyable_storable): Add
1966 const-qualified expression variations.
1967 * include/std/concepts (copyable): Likewise.
1969 * include/std/type_traits (__is_standard_integer): New helper trait.
1970 * include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater)
1971 (cmp_less_equal, cmp_greater_equal, in_range): Define for C++20.
1972 * include/std/version (__cpp_lib_integer_comparison_functions): Define.
1973 * testsuite/20_util/integer_comparisons/1.cc: New test.
1974 * testsuite/20_util/integer_comparisons/2.cc: New test.
1975 * testsuite/20_util/integer_comparisons/equal.cc: New test.
1976 * testsuite/20_util/integer_comparisons/equal_neg.cc: New test.
1977 * testsuite/20_util/integer_comparisons/greater_equal.cc: New test.
1978 * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test.
1979 * testsuite/20_util/integer_comparisons/greater_neg.cc: New test.
1980 * testsuite/20_util/integer_comparisons/in_range.cc: New test.
1981 * testsuite/20_util/integer_comparisons/in_range_neg.cc: New test.
1982 * testsuite/20_util/integer_comparisons/less.cc: New test.
1983 * testsuite/20_util/integer_comparisons/less_equal.cc: New test.
1984 * testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test.
1985 * testsuite/20_util/integer_comparisons/less_neg.cc: New test.
1986 * testsuite/20_util/integer_comparisons/not_equal.cc: New test.
1987 * testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test.
1989 2020-02-16 Patrick Palka <ppalka@redhat.com>
1991 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
1992 Move code after an early exit constexpr if to under an else branch.
1993 * include/bits/ranges_algobase.h (__equal_fn::operator()): Likewise.
1995 2020-02-15 Patrick Palka <ppalka@redhat.com>
1997 * include/bits/ranges_algo.h: Adjust whitespace and formatting.
1998 * include/bits/ranges_algobase.h: Likewise.
1999 * include/bits/ranges_uninitialized.h: Likewise.
2001 * include/bits/ranges_algo.h: (adjacent_find, all_of, any_of,
2002 binary_search, copy_if, count, count_if, equal_range, find, find_end,
2003 find_first_of, find_if, find_if_not, for_each, generate, generate_n,
2004 includes, inplace_merge, is_heap, is_heap_until, is_partitioned,
2005 is_permutation, is_sorted, is_sorted_until, lexicographical_compare,
2006 lower_bound, make_heap, max, max_element, merge, min, min_element,
2007 minmax, minmax_element, mismatch, next_permutation, none_of,
2008 nth_element, partial_sort, partial_sort_copy, partition, partition_copy,
2009 partition_point, pop_heap, prev_permutation, push_heap, remove,
2010 remove_copy, remove_copy_if, remove_if, replace, replace_copy,
2011 replace_copy_if, replace_if, reverse, reverse_copy, rotate, rotate_copy,
2012 search, search_n, set_difference, set_intersection,
2013 set_symmetric_difference, set_union, shuffle, sort, sort_heap,
2014 stable_partition, stable_sort, swap_ranges, transform, unique,
2015 unique_copy, upper_bound): Convert into function objects.
2016 * include/bits/ranges_algobase.h: (equal, copy, move, copy_n, fill_n,
2017 fill, move_backward, copy_backward): Likewise.
2018 * include/bits/ranges_uninitialized.h (uninitialized_default_construct,
2019 uninitialized_default_construct_n, uninitialized_value_construct,
2020 uninitialized_value_construct_n, uninitialized_copy,
2021 uninitialized_copy_n, uninitialized_move, uninitialized_move_n,
2022 uninitialized_fill, uninitialized_fill_n, construct_at, destroy_at,
2023 destroy, destroy_n): Likewise.
2025 * include/bits/ranges_algo.h (ranges::__find_end): Fold into ...
2026 (ranges::find_end): ... here.
2027 (ranges::__lexicographical_compare): Fold into ...
2028 (ranges::lexicographical_compare): ... here.
2029 * include/bits/ranges_algobase.h (ranges::__equal): Fold into ...
2030 (ranges::equal): ... here.
2032 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2034 * include/bits/erase_if.h (__cpp_lib_erase_if): Define to 202002L.
2035 * include/std/deque: Likewise.
2036 * include/std/forward_list: Likewise.
2037 * include/std/list: Likewise.
2038 * include/std/string: Likewise.
2039 * include/std/vector: Likewise.
2040 * include/std/version: Likewise.
2041 * testsuite/23_containers/deque/erasure.cc: Test for new value.
2042 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
2043 * testsuite/23_containers/list/erasure.cc: Likewise.
2044 * testsuite/23_containers/map/erasure.cc: Likewise.
2045 * testsuite/23_containers/set/erasure.cc: Likewise.
2046 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
2047 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
2048 * testsuite/23_containers/vector/erasure.cc: Likewise.
2050 2020-02-15 Jonathan Wakely <jwakely@redhat.com>
2052 * include/bits/random.h (uniform_random_bit_generator): Require min()
2053 and max() to be constant expressions and min() to be less than max().
2054 * testsuite/26_numerics/random/concept.cc: Check additional cases.
2055 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
2057 2020-02-13 Patrick Palka <ppalka@redhat.com>
2059 * include/Makefile.am: Add <bits/ranges_uninitialized.h>.
2060 * include/Makefile.in: Regenerate.
2061 * include/bits/ranges_uninitialized.h: New header.
2062 * include/std/memory: Include it.
2063 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: New
2065 * .../uninitialized_copy/constrained.cc: New test.
2066 * .../uninitialized_default_construct/constrained.cc: New test.
2067 * .../uninitialized_fill/constrained.cc: New test.
2068 * .../uninitialized_move/constrained.cc: New test.
2069 * .../uninitialized_value_construct/constrained.cc: New test.
2071 * include/Makefile.am: Add bits/ranges_algobase.h
2072 * include/Makefile.in: Regenerate.
2073 * bits/ranges_algo.h: Include <bits/ranges_algobase.h> and refactor
2075 (__detail::__is_normal_iterator, __detail::is_reverse_iterator,
2076 __detail::__is_move_iterator, copy_result, move_result,
2077 __equal, equal, copy_result, move_result, move_backward_result,
2078 copy_backward_result, __copy_or_move_backward, __copy_or_move, copy,
2079 move, copy_backward, move_backward, copy_n_result, copy_n, fill_n,
2080 fill): Split out into ...
2081 * bits/range_algobase.h: ... this new header.
2083 2020-02-12 Patrick Palka <ppalka@redhat.com>
2085 LWG 3389 and LWG 3390
2086 * include/bits/stl_iterator.h (move_move_iterator): Use std::move when
2087 constructing the move_iterator with __i.
2088 (counted_iterator::counted_iterator): Use std::move when initializing
2090 * testsuite/24_iterators/counted_iterator/lwg3389.cc: New test.
2091 * testsuite/24_iterators/move_iterator/lwg3390.cc: New test.
2093 2020-02-12 Sandra Loosemore <sandra@codesourcery.com>
2098 * configure: Regenerated.
2100 2020-02-12 François Dumont <fdumont@gcc.gnu.org>
2102 * include/bits/hashtable.h
2103 (_Hashtable<>(_Hashtable&&, std::allocator_type&)): Add
2104 missing std namespace qualification to forward call.
2106 2020-02-09 Jonathan Wakely <jwakely@redhat.com>
2108 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Fix
2110 * testsuite/20_util/function_objects/range.cmp/less.ccL Likewise.
2112 * include/std/ranges: Fix non-ASCII characters in comment.
2114 * include/bits/range_cmp.h (__detail::__eq_builtin_ptr_cmp): Require
2115 equality comparison to be valid and return bool.
2116 (__detail::__less_builtin_ptr_cmp): Likewise for less-than comparison.
2117 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Check
2118 type with ambiguous conversion to fundamental types.
2119 * testsuite/20_util/function_objects/range.cmp/less.cc: Likewise.
2121 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2123 * include/bits/iterator_concepts.h (iter_difference_t, iter_value_t):
2125 (readable_traits): Rename to indirectly_readable_traits.
2126 (readable): Rename to indirectly_readable.
2127 (writable): Rename to indirectly_writable.
2128 (__detail::__iter_exchange_move): Do not use remove_reference_t.
2129 (indirectly_swappable): Adjust requires expression parameter types.
2131 * include/bits/ranges_algo.h (ranges::transform, ranges::replace)
2132 (ranges::replace_if, ranges::generate_n, ranges::generate)
2133 (ranges::remove): Use new name for writable.
2134 * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow):
2135 Use new name for readable.
2136 * include/ext/pointer.h (readable_traits<_Pointer_adapter<P>>): Use
2137 new name for readable_traits.
2138 * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise.
2139 * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for
2140 new definition of indirectly_readable.
2142 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Change
2143 to take parameters of common_iterator, instead of the common_iterator
2144 type itself. Fix argument for __common_iter_has_arrow constraint.
2145 (iterator_traits<common_iterator<I, S>>::pointer): Adjust.
2147 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2149 * include/std/ranges (iota_view): Add braces to prevent -Wempty-body
2151 (basic_istream_view::_Iterator::operator++()): Add missing return.
2153 2020-02-07 Patrick Palka <ppalka@redhat.com>
2155 * include/bits/ranges_algo.h: Remove extraneous &&.
2157 * include/std/ranges (ranges::__detail::__stream_extractable,
2158 ranges::basic_istream_view, ranges::istream_view): Define.
2159 * testsuite/std/ranges/istream_view: New test.
2161 Implement C++20 range adaptors
2162 * include/std/ranges: Include <bits/refwrap.h> and <tuple>.
2163 (subrange::_S_store_size): Mark as const instead of constexpr to
2164 avoid what seems to be a bug in GCC.
2165 (__detail::__box): Give it defaulted copy and move constructors.
2166 (ranges::views::_Single::operator()): Mark constexpr.
2167 (ranges::views::_Iota::operator()): Mark constexpr.
2168 (__detail::Empty): Define.
2169 (ranges::views::__closure::_RangeAdaptor,
2170 ranges::views::__closure::_RangeAdaptorClosure, ref_view, all_view,
2171 ranges::views::all, ranges::__detail::find_if,
2172 ranges::__detail::find_if_not, ranges::__detail::mismatch,
2173 ranges::detail::min, filter_view, ranges::views::filter, transform_view,
2174 ranges::views::transform, take_view, ranges::views::take,
2175 take_while_view, ranges::views::take_while, drop_view,
2176 ranges::views::drop, join_view, ranges::views::join,
2177 __detail::require_constant, __detail::tiny_range, split_view,
2178 ranges::views::split, ranges::views::_Counted, ranges::views::counted,
2179 common_view, ranges::views::common, reverse_view,
2180 ranges::views::reverse,
2181 ranges::views::__detail::__is_reversible_subrange,
2182 ranges::views::__detail::__is_reverse_view, reverse_view,
2183 ranges::views::reverse, __detail::__has_tuple_element, elements_view,
2184 ranges::views::elements, ranges::views::keys, ranges::views::values):
2186 (views): Alias for ranges::views.
2187 (tuple_size<ranges::subrange<>>, tuple_element<0, ranges::subrange>,
2188 tuple_element<1, ranges::subrange>): New partial specializations.
2189 * testsuite/std/ranges/adaptors/all.cc: New test.
2190 * testsuite/std/ranges/adaptors/common.cc: Likewise.
2191 * testsuite/std/ranges/adaptors/counted.cc: Likewise.
2192 * testsuite/std/ranges/adaptors/drop.cc: Likewise.
2193 * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
2194 * testsuite/std/ranges/adaptors/elements.cc: Likewise.
2195 * testsuite/std/ranges/adaptors/filter.cc: Likewise.
2196 * testsuite/std/ranges/adaptors/join.cc: Likewise.
2197 * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
2198 * testsuite/std/ranges/adaptors/split.cc: Likewise.
2199 * testsuite/std/ranges/adaptors/take.cc: Likewise.
2200 * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
2201 * testsuite/std/ranges/adaptors/transform.cc: Likewise.
2203 2020-02-07 Jonathan Wakely <jwakely@redhat.com>
2205 * libsupc++/compare (__cmp_cat::type): Define typedef for underlying
2206 type of enumerations and comparison category types.
2207 (__cmp_cat::_Ord, __cmp_cat::_Ncmp): Add underlying type.
2208 (__cmp_cat::_Ncmp::unordered): Change value to 2.
2209 (partial_ordering::_M_value, weak_ordering::_M_value)
2210 (strong_ordering::_M_value): Change type to __cmp_cat::type.
2211 (partial_ordering::_M_is_ordered): Remove data member.
2212 (partial_ordering): Use second bit of _M_value for unordered. Adjust
2213 comparison operators.
2214 (weak_ordering::operator partial_ordering): Simplify to remove
2216 (operator<=>(unspecified, weak_ordering)): Likewise.
2217 (strong_ordering::operator partial_ordering): Likewise.
2218 (strong_ordering::operator weak_ordering): Likewise.
2219 (operator<=>(unspecified, strong_ordering)): Likewise.
2220 * testsuite/18_support/comparisons/categories/partialord.cc: New test.
2221 * testsuite/18_support/comparisons/categories/strongord.cc: New test.
2222 * testsuite/18_support/comparisons/categories/weakord.cc: New test.
2224 * include/std/ranges (iota_view::_Iterator): Fix typo in name of
2225 __cpp_lib_three_way_comparison macro and use deduced return type for
2227 * testsuite/std/ranges/iota/iterator.cc: New test.
2229 2020-02-07 Patrick Palka <ppalka@redhat.com>
2230 Jonathan Wakely <jwakely@redhat.com>
2232 Implement C++20 constrained algorithms
2233 * include/Makefile.am: Add new header.
2234 * include/Makefile.in: Regenerate.
2235 * include/std/algorithm: Include <bits/ranges_algo.h>.
2236 * include/bits/ranges_algo.h: New file.
2237 * testsuite/25_algorithms/adjacent_find/constrained.cc: New test.
2238 * testsuite/25_algorithms/all_of/constrained.cc: New test.
2239 * testsuite/25_algorithms/any_of/constrained.cc: New test.
2240 * testsuite/25_algorithms/binary_search/constrained.cc: New test.
2241 * testsuite/25_algorithms/copy/constrained.cc: New test.
2242 * testsuite/25_algorithms/copy_backward/constrained.cc: New test.
2243 * testsuite/25_algorithms/copy_if/constrained.cc: New test.
2244 * testsuite/25_algorithms/copy_n/constrained.cc: New test.
2245 * testsuite/25_algorithms/count/constrained.cc: New test.
2246 * testsuite/25_algorithms/count_if/constrained.cc: New test.
2247 * testsuite/25_algorithms/equal/constrained.cc: New test.
2248 * testsuite/25_algorithms/equal_range/constrained.cc: New test.
2249 * testsuite/25_algorithms/fill/constrained.cc: New test.
2250 * testsuite/25_algorithms/fill_n/constrained.cc: New test.
2251 * testsuite/25_algorithms/find/constrained.cc: New test.
2252 * testsuite/25_algorithms/find_end/constrained.cc: New test.
2253 * testsuite/25_algorithms/find_first_of/constrained.cc: New test.
2254 * testsuite/25_algorithms/find_if/constrained.cc: New test.
2255 * testsuite/25_algorithms/find_if_not/constrained.cc: New test.
2256 * testsuite/25_algorithms/for_each/constrained.cc: New test.
2257 * testsuite/25_algorithms/generate/constrained.cc: New test.
2258 * testsuite/25_algorithms/generate_n/constrained.cc: New test.
2259 * testsuite/25_algorithms/heap/constrained.cc: New test.
2260 * testsuite/25_algorithms/includes/constrained.cc: New test.
2261 * testsuite/25_algorithms/inplace_merge/constrained.cc: New test.
2262 * testsuite/25_algorithms/is_partitioned/constrained.cc: New test.
2263 * testsuite/25_algorithms/is_permutation/constrained.cc: New test.
2264 * testsuite/25_algorithms/is_sorted/constrained.cc: New test.
2265 * testsuite/25_algorithms/is_sorted_until/constrained.cc: New test.
2266 * testsuite/25_algorithms/lexicographical_compare/constrained.cc: New
2268 * testsuite/25_algorithms/lower_bound/constrained.cc: New test.
2269 * testsuite/25_algorithms/max/constrained.cc: New test.
2270 * testsuite/25_algorithms/max_element/constrained.cc: New test.
2271 * testsuite/25_algorithms/merge/constrained.cc: New test.
2272 * testsuite/25_algorithms/min/constrained.cc: New test.
2273 * testsuite/25_algorithms/min_element/constrained.cc: New test.
2274 * testsuite/25_algorithms/minmax/constrained.cc: New test.
2275 * testsuite/25_algorithms/minmax_element/constrained.cc: New test.
2276 * testsuite/25_algorithms/mismatch/constrained.cc: New test.
2277 * testsuite/25_algorithms/move/constrained.cc: New test.
2278 * testsuite/25_algorithms/move_backward/constrained.cc: New test.
2279 * testsuite/25_algorithms/next_permutation/constrained.cc: New test.
2280 * testsuite/25_algorithms/none_of/constrained.cc: New test.
2281 * testsuite/25_algorithms/nth_element/constrained.cc: New test.
2282 * testsuite/25_algorithms/partial_sort/constrained.cc: New test.
2283 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test.
2284 * testsuite/25_algorithms/partition/constrained.cc: New test.
2285 * testsuite/25_algorithms/partition_copy/constrained.cc: New test.
2286 * testsuite/25_algorithms/partition_point/constrained.cc: New test.
2287 * testsuite/25_algorithms/prev_permutation/constrained.cc: New test.
2288 * testsuite/25_algorithms/remove/constrained.cc: New test.
2289 * testsuite/25_algorithms/remove_copy/constrained.cc: New test.
2290 * testsuite/25_algorithms/remove_copy_if/constrained.cc: New test.
2291 * testsuite/25_algorithms/remove_if/constrained.cc: New test.
2292 * testsuite/25_algorithms/replace/constrained.cc: New test.
2293 * testsuite/25_algorithms/replace_copy/constrained.cc: New test.
2294 * testsuite/25_algorithms/replace_copy_if/constrained.cc: New test.
2295 * testsuite/25_algorithms/replace_if/constrained.cc: New test.
2296 * testsuite/25_algorithms/reverse/constrained.cc: New test.
2297 * testsuite/25_algorithms/reverse_copy/constrained.cc: New test.
2298 * testsuite/25_algorithms/rotate/constrained.cc: New test.
2299 * testsuite/25_algorithms/rotate_copy/constrained.cc: New test.
2300 * testsuite/25_algorithms/search/constrained.cc: New test.
2301 * testsuite/25_algorithms/search_n/constrained.cc: New test.
2302 * testsuite/25_algorithms/set_difference/constrained.cc: New test.
2303 * testsuite/25_algorithms/set_intersection/constrained.cc: New test.
2304 * testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New
2306 * testsuite/25_algorithms/set_union/constrained.cc: New test.
2307 * testsuite/25_algorithms/shuffle/constrained.cc: New test.
2308 * testsuite/25_algorithms/sort/constrained.cc: New test.
2309 * testsuite/25_algorithms/stable_partition/constrained.cc: New test.
2310 * testsuite/25_algorithms/stable_sort/constrained.cc: New test.
2311 * testsuite/25_algorithms/swap_ranges/constrained.cc: New test.
2312 * testsuite/25_algorithms/transform/constrained.cc: New test.
2313 * testsuite/25_algorithms/unique/constrained.cc: New test.
2314 * testsuite/25_algorithms/unique_copy/constrained.cc: New test.
2315 * testsuite/25_algorithms/upper_bound/constrained.cc: New test.
2317 2020-02-06 Jonathan Wakely <jwakely@redhat.com>
2319 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Fix PR
2320 number in comment. Fix indentation.
2322 * include/bits/stl_algobase.h (__iter_swap, __iter_swap<true>): Remove
2323 redundant _GLIBCXX20_CONSTEXPR.
2325 * include/std/ranges (viewable_range): Replace decay_t with
2326 remove_cvref_t (LWG 3375).
2328 2020-02-05 Jonathan Wakely <jwakely@redhat.com>
2330 * include/bits/iterator_concepts.h (iter_reference_t)
2331 (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t):
2332 Remove workarounds for PR c++/67704.
2333 * testsuite/24_iterators/aliases.cc: New test.
2335 2020-02-05 Patrick Palka <ppalka@redhat.com>
2337 * include/bits/stl_iterator.h (move_iterator::move_iterator): Move __i
2338 when initializing _M_current.
2339 (move_iterator::base): Split into two overloads differing in
2340 ref-qualifiers as in P1207R4 for C++20.
2342 2020-02-04 Jonathan Wakely <jwakely@redhat.com>
2344 * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Un-define after
2348 * include/bits/unique_ptr.h (__uniq_ptr_impl::swap): Define.
2349 (unique_ptr::swap, unique_ptr<T[], D>::swap): Call it.
2350 * testsuite/20_util/unique_ptr/modifiers/93562.cc: New test.
2352 2020-02-01 Andrew Burgess <andrew.burgess@embecosm.com>
2354 * configure: Regenerate.
2356 2020-01-31 Patrick Palka <ppalka@redhat.com>
2358 * testsuite/24_iterators/range_operations/distance.cc: Do not assume
2359 test_range::end() returns the same type as test_range::begin().
2360 * testsuite/24_iterators/range_operations/next.cc: Likewise.
2361 * testsuite/24_iterators/range_operations/prev.cc: Likewise.
2362 * testsuite/util/testsuite_iterators.h (__gnu_test::test_range::end):
2363 Always return a sentinel<I>.
2365 2020-01-29 Jonathan Wakely <jwakely@redhat.com>
2368 * include/std/stop_token (stop_token::stop_possible()): Call new
2369 _M_stop_possible() function.
2370 (stop_token::stop_requested()): Do not use stop_possible().
2371 (stop_token::binary_semaphore): New class, as temporary stand-in for
2372 std::binary_semaphore.
2373 (stop_token::_Stop_cb::_M_callback): Add noexcept to type.
2374 (stop_token::_Stop_cb::_M_destroyed, stop_token::_Stop_cb::_M_done):
2375 New data members for symchronization with stop_callback destruction.
2376 (stop_token::_Stop_cb::_Stop_cb): Make non-template.
2377 (stop_token::_Stop_cb::_M_linked, stop_token::_Stop_cb::_S_execute):
2379 (stop_token::_Stop_cb::_M_run): New member function.
2380 (stop_token::_Stop_state::_M_stopped, stop_token::_Stop_state::_M_mtx):
2382 (stop_token::_Stop_state::_M_owners): New data member to track
2383 reference count for ownership.
2384 (stop_token::_Stop_state::_M_value): New data member combining a
2385 spinlock, the stop requested flag, and the reference count for
2386 associated stop_source objects.
2387 (stop_token::_Stop_state::_M_requester): New data member for
2388 synchronization with stop_callback destruction.
2389 (stop_token::_Stop_state::_M_stop_possible()): New member function.
2390 (stop_token::_Stop_state::_M_stop_requested()): Inspect relevant bit
2392 (stop_token::_Stop_state::_M_add_owner)
2393 (stop_token::_Stop_state::_M_release_ownership)
2394 (stop_token::_Stop_state::_M_add_ssrc)
2395 (stop_token::_Stop_state::_M_sub_ssrc): New member functions for
2396 updating reference counts.
2397 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2398 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
2399 (stop_token::_Stop_state::_M_try_lock)
2400 (stop_token::_Stop_state::_M_try_lock_and_stop)
2401 (stop_token::_Stop_state::_M_do_try_lock): New member functions for
2403 (stop_token::_Stop_state::_M_request_stop): Use atomic operations to
2404 read and update state. Release lock while running callbacks. Use new
2405 data members to synchronize with callback destruction.
2406 (stop_token::_Stop_state::_M_remove_callback): Likewise.
2407 (stop_token::_Stop_state::_M_register_callback): Use atomic operations
2408 to read and update state.
2409 (stop_token::_Stop_state_ref): Handle type to manage _Stop_state,
2410 replacing shared_ptr.
2411 (stop_source::stop_source(const stop_source&)): Update reference count.
2412 (stop_source::operator=(const stop_source&)): Likewise.
2413 (stop_source::~stop_source()): Likewise.
2414 (stop_source::stop_source(stop_source&&)): Define as defaulted.
2415 (stop_source::operator=(stop_source&&)): Establish postcondition on
2417 (stop_callback): Enforce preconditions on template parameter. Replace
2418 base class with data member of new _Cb_impl type.
2419 (stop_callback::stop_callback(const stop_token&, Cb&&))
2420 (stop_callback::stop_callback(stop_token&&, Cb&&)): Fix TOCTTOU race.
2421 (stop_callback::_Cb_impl): New type wrapping _Callback member and
2422 defining the _S_execute member function.
2423 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: New
2425 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: New test.
2426 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: New test.
2427 * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
2429 * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: New
2431 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: New test.
2432 * testsuite/30_threads/stop_token/stop_source/assign.cc: New test.
2433 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: New
2436 * libsupc++/compare (__detail::__3way_builtin_ptr_cmp): Use
2437 three_way_comparable_with.
2438 (__detail::__3way_cmp_with): Remove workaround for fixed bug.
2439 (compare_three_way::operator()): Remove redundant constraint from
2441 (__detail::_Synth3way::operator()): Use three_way_comparable_with
2442 instead of workaround.
2443 * testsuite/18_support/comparisons/object/93479.cc: Prune extra
2444 output due to simplified constraints on compare_three_way::operator().
2447 * libsupc++/compare (__3way_builtin_ptr_cmp): Require <=> to be valid.
2448 * testsuite/18_support/comparisons/object/93479.cc: New test.
2450 * testsuite/std/ranges/access/end.cc: Do not assume test_range::end()
2451 returns the same type as test_range::begin(). Add comments.
2452 * testsuite/std/ranges/access/rbegin.cc: Likewise.
2453 * testsuite/std/ranges/access/rend.cc: Likewise.
2454 * testsuite/std/ranges/range.cc: Do not assume the sentinel for
2455 test_range is the same as its iterator type.
2456 * testsuite/util/testsuite_iterators.h (test_range::sentinel): Add
2457 operator- overloads to satisfy sized_sentinel_for when the iterator
2458 satisfies random_access_iterator.
2460 2020-01-28 Jonathan Wakely <jwakely@redhat.com>
2463 * include/bits/refwrap.h (reference_wrapper::operator()): Restrict
2464 static assertion to object types.
2467 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for
2468 clock_gettime instead of explicit glibc version check.
2469 * configure: Regenerate.
2471 2020-01-28 Martin Liska <mliska@suse.cz>
2474 * include/std/atomic: Fix typo.
2475 * include/std/optional: Likewise.
2477 2020-01-27 Andrew Burgess <andrew.burgess@embecosm.com>
2479 * configure: Regenerate.
2481 2020-01-27 Jonathan Wakely <jwakely@redhat.com>
2484 * include/std/span (span): Fix deduction guide.
2485 * testsuite/23_containers/span/deduction.cc: New test.
2487 2020-01-24 Jonathan Wakely <jwakely@redhat.com>
2489 * libsupc++/compare (__cmp_cat::_Eq): Remove enumeration type.
2490 (__cmp_cat::_Ord::equivalent): Add enumerator.
2491 (__cmp_cat::_Ord::_Less, __cmp_cat::_Ord::_Greater): Rename to less
2493 (partial_ordering, weak_ordering, strong_ordering): Remove
2494 constructors taking __cmp_cat::_Eq parameters. Use renamed
2497 2020-01-24 Maciej W. Rozycki <macro@wdc.com>
2499 * acinclude.m4: Handle `--with-toolexeclibdir='.
2500 * Makefile.in: Regenerate.
2501 * aclocal.m4: Regenerate.
2502 * configure: Regenerate.
2503 * doc/Makefile.in: Regenerate.
2504 * include/Makefile.in: Regenerate.
2505 * libsupc++/Makefile.in: Regenerate.
2506 * po/Makefile.in: Regenerate.
2507 * python/Makefile.in: Regenerate.
2508 * src/Makefile.in: Regenerate.
2509 * src/c++11/Makefile.in: Regenerate.
2510 * src/c++17/Makefile.in: Regenerate.
2511 * src/c++98/Makefile.in: Regenerate.
2512 * src/filesystem/Makefile.in: Regenerate.
2513 * testsuite/Makefile.in: Regenerate.
2515 2020-01-23 Alexandre Oliva <oliva@adacore.com>
2517 * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Reject macros.
2518 * configure: Rebuild.
2520 * testsuite/27_io/fpos/mbstate_t/1.cc: Zero-init mbstate_t.
2522 2020-01-23 Jonathan Wakely <jwakely@redhat.com>
2525 * include/Makefile.am (${host_builddir}/largefile-config.h): Simplify
2527 * include/Makefile.in: Regenerate.
2529 2020-01-20 Jonathan Wakely <jwakely@redhat.com>
2531 * doc/xml/faq.xml: Fix grammar.
2532 * doc/xml/manual/appendix_contributing.xml: Improve instructions.
2533 * doc/xml/manual/spine.xml: Update copyright years.
2534 * doc/html/*: Regenerate.
2536 2020-01-19 Eric S. Raymond <esr@thyrsus.com>
2538 * doc/xml/faq.xml: Update for SVN -> Git transition.
2539 * doc/xml/manual/appendix_contributing.xml: Likewise.
2540 * doc/xml/manual/status_cxx1998.xml: Likewise.
2541 * doc/xml/manual/status_cxx2011.xml: Likewise.
2542 * doc/xml/manual/status_cxx2014.xml: Likewise.
2543 * doc/xml/manual/status_cxx2017.xml: Likewise.
2544 * doc/xml/manual/status_cxx2020.xml: Likewise.
2545 * doc/xml/manual/status_cxxtr1.xml: Likewise.
2546 * doc/xml/manual/status_cxxtr24733.xml: Likewise.
2548 2020-01-18 Iain Sandoe <iain@sandoe.co.uk>
2550 * include/Makefile.am: Add coroutine to the std set.
2551 * include/Makefile.in: Regenerated.
2552 * include/std/coroutine: New file.
2554 2020-01-17 Jonathan Wakely <jwakely@redhat.com>
2557 * include/bits/c++config: Only do PSTL config when the header is
2558 present, to fix freestanding.
2559 * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare allocation
2560 functions if they were detected by configure.
2562 2020-01-16 Kai-Uwe Eckhardt <kuehro@gmx.de>
2563 Matthew Bauer <mjbauer95@gmail.com>
2564 Jonathan Wakely <jwakely@redhat.com>
2566 PR bootstrap/64271 (partial)
2567 * config/os/bsd/netbsd/ctype_base.h (ctype_base::mask): Change type
2569 (ctype_base::alpha, ctype_base::digit, ctype_base::xdigit)
2570 (ctype_base::print, ctype_base::graph, ctype_base::alnum): Sync
2571 definitions with NetBSD upstream.
2572 (ctype_base::blank): Use _CTYPE_BL.
2573 * config/os/bsd/netbsd/ctype_configure_char.cc (_C_ctype_): Remove
2575 (ctype<char>::classic_table): Use _C_ctype_tab_ instead of _C_ctype_.
2576 (ctype<char>::do_toupper, ctype<char>::do_tolower): Cast char
2577 parameters to unsigned char.
2578 * config/os/bsd/netbsd/ctype_inline.h (ctype<char>::is): Likewise.
2580 2020-01-16 François Dumont <fdumont@gcc.gnu.org>
2583 * include/bits/hashtable.h (_Hashtable<>): Make _Equality<> friend.
2584 * include/bits/hashtable_policy.h: Include <bits/stl_algo.h>.
2585 (_Equality_base): Remove.
2586 (_Equality<>::_M_equal): Review implementation. Use
2587 std::is_permutation.
2588 * testsuite/23_containers/unordered_multiset/operators/1.cc
2589 (Hash, Equal, test02, test03): New.
2590 * testsuite/23_containers/unordered_set/operators/1.cc
2591 (Hash, Equal, test02, test03): New.
2593 2020-01-15 Jonathan Wakely <jwakely@redhat.com>
2596 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type):
2597 Move here from <bits/range_access.h> and define using __int128 when
2599 (__is_integer_like, __is_signed_integer_like): Move here from
2600 <bits/range_access.h>.
2601 (weakly_incrementable): Use __is_signed_integer_like.
2602 * include/bits/range_access.h (__max_diff_type, __max_size_type)
2603 (__is_integer_like, __is_signed_integer_like): Move to
2604 <bits/iterator_concepts.h>.
2605 (__make_unsigned_like_t): Move here from <ranges>.
2606 * include/std/ranges (__make_unsigned_like_t): Move to
2607 <bits/range_access.h>.
2608 (iota_view): Replace using-directive with using-declarations.
2609 * testsuite/std/ranges/iota/93267.cc: New test.
2610 * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory.
2612 2020-01-13 Jonathan Wakely <jwakely@redhat.com>
2615 * include/bits/fs_path.h (path::generic_string<C,A>)
2616 [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Convert root-dir to forward-slash.
2617 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Check
2618 root-dir is converted to forward slash in generic pathname.
2619 * testsuite/27_io/filesystem/path/generic/utf.cc: New test.
2620 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: New test.
2623 * include/bits/atomic_base.h (__cpp_lib_atomic_value_initialization):
2625 (__atomic_flag_base, __atomic_base, __atomic_base<_PTp*>)
2626 (__atomic_float): Add default member initializer for C++20.
2627 * include/std/atomic (atomic): Likewise.
2628 (atomic::atomic()): Remove noexcept-specifier on default constructor.
2629 * include/std/version (__cpp_lib_atomic_value_initialization): Define.
2630 * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-error line
2632 * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
2633 * testsuite/29_atomics/atomic/cons/value_init.cc: New test.
2634 * testsuite/29_atomics/atomic_flag/cons/value_init.cc: New test.
2635 * testsuite/29_atomics/atomic_flag/requirements/trivial.cc: Adjust
2636 expected result for is_trivially_default_constructible.
2637 * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
2638 * testsuite/29_atomics/atomic_float/value_init.cc: New test.
2639 * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Likewise.
2640 * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
2641 * testsuite/29_atomics/atomic_integral/cons/value_init.cc
2642 * testsuite/29_atomics/atomic_integral/requirements/trivial.cc: Adjust
2643 expected results for is_trivially_default_constructible.
2644 * testsuite/util/testsuite_common_types.h (has_trivial_dtor): Add
2647 2020-01-10 Jonathan Wakely <jwakely@redhat.com>
2649 * testsuite/util/testsuite_iterators.h: Improve comment.
2651 * testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11
2652 initialization syntax.
2655 * include/bits/streambuf_iterator.h (istreambuf_iterator): Make type
2656 of base class independent of __cplusplus value.
2657 [__cplusplus < 201103L] (istreambuf_iterator::reference): Override the
2658 type defined in the base class
2659 * testsuite/24_iterators/istreambuf_iterator/92285.cc: New test.
2660 * testsuite/24_iterators/istreambuf_iterator/requirements/
2661 base_classes.cc: Adjust expected base class for C++98.
2663 2020-01-09 Olivier Hainque <hainque@adacore.com>
2665 * doc/xml/manual/appendix_contributing.xml: Document _C2
2666 as a reserved identifier, by VxWorks.
2667 * include/bits/stl_map.h: Rename _C2 template typenames as _Cmp2.
2668 * include/bits/stl_multimap.h: Likewise.
2670 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2672 * include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==)
2673 (_ExtPtr_allocator::operator!=): Add missing const qualifiers.
2674 * include/ext/pointer.h (readable_traits<_Pointer_adapter<S>>): Add
2675 partial specialization to disambiguate the two constrained
2678 * include/experimental/type_traits (experimental::is_pod_v): Disable
2679 -Wdeprecated-declarations warnings around reference to std::is_pod.
2680 * include/std/type_traits (is_pod_v): Likewise.
2681 * testsuite/18_support/max_align_t/requirements/2.cc: Also check
2682 is_standard_layout and is_trivial. Do not check is_pod for C++20.
2683 * testsuite/20_util/is_pod/requirements/explicit_instantiation.cc:
2684 Add -Wno-deprecated for C++20.
2685 * testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise.
2686 * testsuite/20_util/is_pod/value.cc: Likewise.
2687 * testsuite/experimental/type_traits/value.cc: Likewise.
2689 2020-01-09 JeanHeyd "ThePhD" Meneide <phdofthehouse@gmail.com>
2691 * include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro.
2692 * include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20.
2693 * testuite/20_util/is_pod/deprecated-2a.cc: New test.
2695 2020-01-09 Jonathan Wakely <jwakely@redhat.com>
2698 * include/bits/random.h (operator>>): Check stream operation succeeds.
2699 * include/bits/random.tcc (operator<<): Remove redundant __ostream_type
2701 (operator>>): Remove redundant __istream_type typedefs. Check stream
2703 (__extract_params): New function to fill a vector from a stream.
2704 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
2707 * config/abi/pre/gnu.ver: Add new exports.
2708 * include/std/memory_resource (memory_resource::~memory_resource()):
2709 Do not define inline.
2710 (monotonic_buffer_resource::~monotonic_buffer_resource()): Likewise.
2711 * src/c++17/memory_resource.cc (memory_resource::~memory_resource()):
2713 (monotonic_buffer_resource::~monotonic_buffer_resource()): Define.
2714 * testsuite/20_util/monotonic_buffer_resource/93208.cc: New test.
2716 2020-01-09 François Dumont <fdumont@gcc.gnu.org>
2719 * include/bits/hashtable.h (_Hashtable<>::__alloc_node_gen_t): New
2721 (_Hashtable<>::__fwd_value_for): New.
2722 (_Hashtable<>::_M_assign_elements<>): Remove _NodeGenerator template
2724 (_Hashtable<>::_M_assign<>): Add _Ht template parameter.
2725 (_Hashtable<>::operator=(const _Hashtable<>&)): Adapt.
2726 (_Hashtable<>::_M_move_assign): Adapt. Replace std::move_if_noexcept
2728 (_Hashtable<>::_Hashtable(const _Hashtable&)): Adapt.
2729 (_Hashtable<>::_Hashtable(const _Hashtable&, const allocator_type&)):
2731 (_Hashtable<>::_Hashtable(_Hashtable&&, const allocator_type&)):
2733 * testsuite/23_containers/unordered_set/92124.cc: New.
2735 2020-01-08 Jonathan Wakely <jwakely@redhat.com>
2738 * src/c++17/fs_ops.cc (do_remove_all): New function implementing more
2739 detailed error reporting for remove_all. Check result of recursive
2740 call before incrementing iterator.
2741 (remove_all(const path&), remove_all(const path&, error_code&)): Use
2743 * src/filesystem/ops.cc (remove_all(const path&, error_code&)): Check
2744 result of recursive call before incrementing iterator.
2745 * testsuite/27_io/filesystem/operations/remove_all.cc: Check errors
2746 are reported correctly.
2747 * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise.
2749 2020-01-07 Thomas Rodgers <trodgers@redhat.com>
2751 * include/std/condition_variable
2752 (condition_variable_any::wait_on): Rename to match current draft
2754 (condition_variable_any::wait_on_until): Likewise.
2755 (condition_variable_any::wait_on_for): Likewise.
2756 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
2757 Adjust tests to account for renamed methods.
2759 2020-01-07 François Dumont <fdumont@gcc.gnu.org>
2762 * include/bits/stl_tree.h
2763 (_Rb_tree<>::_M_move_assign(_Rb_tree&, false_type)): Replace
2764 std::move_if_noexcept by std::move.
2765 * testsuite/23_containers/map/92124.cc: New.
2766 * testsuite/23_containers/set/92124.cc: New.
2768 2020-01-06 Jonathan Wakely <jwakely@redhat.com>
2770 * include/std/stop_token (stop_token): Remove operator!= (LWG 3254).
2771 (stop_source): Likewise (LWG 3362).
2772 * testsuite/30_threads/stop_token/stop_source.cc: Test equality
2775 * include/bits/stl_algobase.h (__is_byte_iter, __min_cmp)
2776 (lexicographical_compare_three_way): Do not depend on
2778 * include/std/version (__cpp_lib_three_way_comparison): Only define
2779 when __cpp_lib_concepts is defined.
2780 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
2782 2020-01-03 Jonathan Wakely <jwakely@redhat.com>
2784 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
2785 Only define four-argument overload when __cpp_lib_concepts is defined.
2787 2020-01-01 John David Anglin <danglin@gcc.gnu.org>
2789 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
2791 2020-01-01 Jakub Jelinek <jakub@redhat.com>
2793 Update copyright years.
2795 Copyright (C) 2020 Free Software Foundation, Inc.
2797 Copying and distribution of this file, with or without modification,
2798 are permitted in any medium without royalty provided the copyright
2799 notice and this notice are preserved.