]> git.ipfire.org Git - thirdparty/gcc.git/blame - libstdc++-v3/ChangeLog
libstdc++: Add spaceship operator to std::type_index
[thirdparty/gcc.git] / libstdc++-v3 / ChangeLog
CommitLineData
4714fd14
JW
12020-04-15 Jonathan Wakely <jwakely@redhat.com>
2
3 * include/std/typeindex (operator<=>): Define for C++20.
4 * testsuite/20_util/typeindex/comparison_operators_c++20.cc: New test.
5
597601aa
JW
62020-04-14 Jonathan Wakely <jwakely@redhat.com>
7
e1e9e8d7
JW
8 * libsupc++/compare (compare_three_way): Fix constraint so that
9 BUILTIN-PTR-THREE-WAY does not require three_way_comparable_with.
10 * testsuite/18_support/comparisons/object/builtin-ptr-three-way.cc:
11 New test.
12
f5fa62ed
JW
13 PR libstdc++/94562
14 * include/bits/shared_ptr.h (operator<=>): Define for C++20.
15 * include/bits/shared_ptr_base.h (operator<=>): Likewise.
16 * include/bits/unique_ptr.h (operator<=>): Add inline specifier.
17 * testsuite/20_util/shared_ptr/comparison/cmp_c++20.cc: New test.
18 * testsuite/20_util/shared_ptr/comparison/less.cc: Do not expect
19 std::less<A*> to be used when comparing std::shared_ptr<A> objects in
20 C++20.
21
597601aa
JW
22 PR libstdc++/94565
23 * libsupc++/compare (__unspec): Add noexcept-specifier to constructor.
24 * testsuite/18_support/comparisons/categories/94565.cc: New test.
25
fa9a57ed
JW
262020-04-13 Iain Sandoe <iain@sandoe.co.uk>
27
28 * include/std/coroutine: Update coroutines builtin define,
29 per n4861.
30
5b074864
JW
312020-04-09 Jonathan Wakely <jwakely@redhat.com>
32
3fd1c229
JW
33 * libsupc++/compare (compare_three_way): Fix noexcept-specifier.
34 (strong_order, weak_order, partial_order): Replace uses of <=> with
35 compare_three_way function object (LWG 3324).
36 * testsuite/18_support/comparisons/algorithms/partial_order.cc: Add
37 equality operator so that X satisfies three_way_comparable.
38 * testsuite/18_support/comparisons/algorithms/strong_order.cc:
39 Likewise.
40 * testsuite/18_support/comparisons/algorithms/weak_order.cc: Likewise.
41
5b074864
JW
42 * include/bits/unique_ptr.h (operator<=>): Define for C++20.
43 * testsuite/20_util/default_delete/48631_neg.cc: Adjust dg-error line.
44 * testsuite/20_util/default_delete/void_neg.cc: Likewise.
45 * testsuite/20_util/unique_ptr/comparison/compare.cc: New test.
46 * testsuite/20_util/unique_ptr/comparison/compare_c++20.cc: New test.
47
e18cd376
JW
482020-04-08 Jonathan Wakely <jwakely@redhat.com>
49
ef389dad
JW
50 * include/bits/slice_array.h (operator==(const slice&, const slice&)):
51 Define for C++20.
52 * include/std/complex (operator==(const T&, const complex<T>&))
53 (operator!=(const complex<T>&, const complex<T>&))
54 (operator!=(const complex<T>&, const T&))
55 (operator!=(const T&, const complex<T>&)): Do not declare for C++20.
56 * testsuite/26_numerics/slice/compare.cc: New test.
57
e18cd376
JW
58 * include/std/charconv (to_chars_result, from_chars_result): Add
59 defaulted equality comparisons for C++20.
60 * testsuite/20_util/from_chars/compare.cc: New test.
61 * testsuite/20_util/to_chars/compare.cc: New test.
62
c104e8f1
JW
632020-04-07 Jonathan Wakely <jwakely@redhat.com>
64
65 PR libstdc++/94520
66 * include/std/charconv (__integer_to_chars_result_type)
67 (__integer_from_chars_result_type): Use __or_ instead of __or_v_ to
68 allow use in C++14.
69 * testsuite/20_util/from_chars/1.cc: Run test as C++14 and replace
70 use of std::string_view with std::string.
71 * testsuite/20_util/from_chars/2.cc: Likewise.
72 * testsuite/20_util/to_chars/1.cc: Likewise.
73 * testsuite/20_util/to_chars/2.cc: Likewise.
74
b6966987
JW
752020-04-06 Jonathan Wakely <jwakely@redhat.com>
76
77 PR libstdc++/94498
78 * include/bits/char_traits.h (__gnu_cxx::char_traits::move): Make it
79 usable in constant expressions for C++20.
80 (__gnu_cxx::char_traits::copy, __gnu_cxx::char_traits::assign): Add
81 _GLIBCXX20_CONSTEXPR.
82 (std::char_traits<char>, std::char_traits<wchar_t>)
83 (std::char_traits<char8_t>): Make move, copy and assign usable in
84 constant expressions for C++20.
85 (std::char_traits<char16_t>, std::char_traits<char32_t>): Make move
86 and copy usable in constant expressions for C++20.
87 * include/std/string_view (basic_string_view::copy): Add
88 _GLIBCXX20_CONSTEXPR.
89 * testsuite/21_strings/basic_string_view/operations/copy/char/
90 constexpr.cc: New test.
91 * testsuite/21_strings/basic_string_view/operations/copy/wchar_t/
92 constexpr.cc: New test.
93
2a1a0c8c
GP
942020-04-05 Gerald Pfeifer <gerald@pfeifer.com>
95
96 * doc/xml/manual/appendix_contributing.xml: Refer to Git
97 documentation instead of Subversion. Switch to https.
98 * doc/html/manual/appendix_contributing.html: Regenerate.
99
24fe8c8e
JW
1002020-04-03 Jonathan Wakely <jwakely@redhat.com>
101
102 PR libstdc++/93960
103 * include/bits/ptr_traits.h (__to_address): Add special case for debug
104 iterators, to avoid dereferenceable check.
105 * testsuite/20_util/to_address/1_neg.cc: Adjust dg-error line number.
106 * testsuite/20_util/to_address/debug.cc: New test.
107
c1effaa2
AC
1082020-04-01 Andrea Corallo <andrea.corallo@arm.com>
109
110 * testsuite/experimental/net/execution_context/use_service.cc:
111 Require pthread and gthreads.
112
6c557ba5
GP
1132020-04-01 Gerald Pfeifer <gerald@pfeifer.com>
114
115 * doc/xml/manual/appendix_free.xml: Move "free books" list from
116 fsf.org to gnu.org.
117 * doc/html/manual/appendix_free.html: Regenerate.
118
e06cde87
VV
1192020-03-31 Ville Voutilainen <ville.voutilainen@gmail.com>
120
121 Library-side tests for parenthesized aggregate init
122
123 PR c++/92878
124 PR c++/92947
125
126 * testsuite/20_util/allocator_traits/members/92878_92947.cc: New.
127 * testsuite/20_util/any/assign/92878_92947.cc: Likewise.
128 * testsuite/20_util/any/cons/92878_92947.cc: Likewise.
129 * testsuite/20_util/is_constructible/92878_92947.cc: Likewise.
130 * testsuite/20_util/optional/assignment/92878_92947.cc: Likewise.
131 * testsuite/20_util/optional/cons/92878_92947.cc: Likewise.
132 * testsuite/20_util/pair/cons/92878_92947.cc: Likewise.
133 * testsuite/20_util/shared_ptr/creation/92878_92947.cc: Likewise.
134 * testsuite/20_util/specialized_algorithms/construct_at/92878_92947.cc:
135 Likewise.
136 * testsuite/20_util/unique_ptr/creation/92878_92947.cc: Likewise.
137 * testsuite/20_util/uses_allocator/92878_92947.cc: Likewise.
138 * testsuite/20_util/variant/92878_92947.cc: Likewise.
139 * testsuite/23_containers/deque/modifiers/emplace/92878_92947.cc:
140 Likewise.
141 * testsuite/23_containers/forward_list/modifiers/92878_92947.cc:
142 Likewise.
143 * testsuite/23_containers/list/modifiers/emplace/92878_92947.cc:
144 Likewise.
145 * testsuite/23_containers/map/modifiers/emplace/92878_92947.cc:
146 Likewise.
147 * testsuite/23_containers/multimap/modifiers/emplace/92878_92947.cc:
148 Likewise.
149 * testsuite/23_containers/multiset/modifiers/emplace/92878_92947.cc:
150 Likewise.
151 * testsuite/23_containers/priority_queue/92878_92947.cc: Likewise.
152 * testsuite/23_containers/queue/92878_92947.cc: Likewise.
153 * testsuite/23_containers/set/modifiers/emplace/92878_92947.cc:
154 Likewise.
155 * testsuite/23_containers/stack/92878_92947.cc: Likewise.
156 * testsuite/23_containers/unordered_map/modifiers/92878_92947.cc:
157 Likewise.
158 * testsuite/23_containers/unordered_multimap/modifiers/92878_92947.cc:
159 Likewise.
160 * testsuite/23_containers/unordered_multiset/modifiers/92878_92947.cc:
161 Likewise.
162 * testsuite/23_containers/unordered_set/modifiers/92878_92947.cc:
163 Likewise.
164 * testsuite/23_containers/vector/modifiers/emplace/92878_92947.cc:
165 Likewise.
166
42cda3ba
JW
1672020-03-28 Jonathan Wakely <jwakely@redhat.com>
168
f6b2b790
JW
169 * testsuite/20_util/is_constructible/value-2.cc: Fix test to account
170 for changes due to parenthesized aggregate-initialization in C++20.
171 * testsuite/20_util/time_point/cons/81468.cc: Fix test to not clash
172 with std::chrono::sys_time in C++20.
173
42cda3ba
JW
174 * include/bits/stl_iterator.h (reverse_iterator): Use requires-clause
175 to constrain C++20 versions of comparison operators. Fix backwards
176 logic of relational operators.
177 (move_iterator): Use requires-clause to constrain comparison operators
178 in C++20. Do not declare non-standard same-type overloads for C++20.
179 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: Check result
180 of comparisons and check using greedy_ops type.
181 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: Likewise.
182 * testsuite/24_iterators/move_iterator/greedy_ops.cc: Remove redundant
183 main function from compile-only test.
184 * testsuite/24_iterators/reverse_iterator/greedy_ops.cc: Likewise.
185
0302a2de
JW
1862020-03-27 Jonathan Wakely <jwakely@redhat.com>
187
b8a28a06
JW
188 * include/bits/range_cmp.h (__cpp_lib_ranges): Define.
189 * include/bits/stl_iterator.h: Check value of __cpp_concepts so that
190 C++20 concepts are required.
191 * include/bits/stl_iterator_base_types.h: Likewise.
192 * include/std/concepts: Likewise.
193 * include/std/version: Likewise.
194 * testsuite/std/ranges/headers/ranges/synopsis.cc: Check feature test
195 macro.
196
81a8d137
JW
197 * include/bits/stl_iterator.h (reverse_iterator::iterator_concept)
198 (reverse_iterator::iterator_category): Define for C++20.
199 (reverse_iterator): Define comparison operators correctly for C++20.
200 (__normal_iterator): Add constraints to comparison operators for C++20.
201 (move_iterator::operator++(int)) [__cpp_lib_concepts]: Define new
202 overload for input iterators.
203 (move_iterator): Add constraints to comparison operators for C++20.
204 Define operator<=> for C++20.
205 * testsuite/24_iterators/move_iterator/input_iterator.cc: New test.
206 * testsuite/24_iterators/move_iterator/move_only.cc: New test.
207 * testsuite/24_iterators/move_iterator/rel_ops_c++20.cc: New test.
208 * testsuite/24_iterators/reverse_iterator/rel_ops_c++20.cc: New test.
209
ae6076b5
JW
210 * include/bits/iterator_concepts.h (__detail::__decay_copy)
211 (__detail::__member_begin, __detail::__adl_begin): Move here from
212 <bits/range_access.h>.
213 (__detail::__ranges_begin, __detail::__range_iter_t): Define.
214 * bits/range_access.h (__cust_access::__decay_copy)
215 (__cust_access::__member_begin, __cust_access::__adl_begin): Move to
216 <bits/iterator_concepts.h>.
217 (ranges::iterator_t): Use __detail::__range_iter_t.
218 * include/bits/stl_iterator.h (back_insert_iterator): Simplify
219 conditional compilation. Add _GLIBCXX20_CONSTEXPR to all members.
220 (front_insert_iterator): Likewise.
221 (insert_iterator): Implement changes from P0896R4 for C++20.
222 * testsuite/24_iterators/back_insert_iterator/constexpr.cc: New test.
223 * testsuite/24_iterators/front_insert_iterator/constexpr.cc: New test.
224 * testsuite/24_iterators/headers/iterator/synopsis_c++17.cc: Adjust
225 for inclusion in synopsis_c++20.cc which expects different signatures
226 for some function templates.
227 * testsuite/24_iterators/insert_iterator/constexpr.cc: New test.
228
0302a2de
JW
229 * include/std/type_traits (__is_array_convertible): Move definition
230 to immediately after is_convertible.
231
16948c54
JW
2322020-03-26 Jonathan Wakely <jwakely@redhat.com>
233
234 * include/std/chrono (chrono::days, chrono::weeks, chrono::years)
235 (chrono::months, chrono::sys_days, chrono::local_t)
236 (chrono::local_time, chrono::local_seconds, chrono::local_days):
237 Define for C++20.
238 (chrono::time_point): Add missing static assert.
239 * testsuite/20_util/time_point/requirements/duration_neg.cc: New test.
240 * testsuite/std/time/clock/file/overview.cc: New test.
241 * testsuite/std/time/clock/file/members.cc: New test.
242 * testsuite/std/time/syn_c++20.cc: New test.
243
9673d11e 2442020-03-25 Mike Crowe <mac@mcrowe.com>
bf1fc37b 245
e3ef3719
JW
246 * testsuite/30_threads/shared_timed_mutex/try_lock_until/1.cc: New
247 test.
248 * testsuite/30_threads/shared_timed_mutex/try_lock_until/2.cc: New
249 test.
250
9673d11e
JW
2512020-03-25 Jonathan Wakely <jwakely@redhat.com>
252
bf1fc37b
JW
253 * include/bits/fs_fwd.h (filesystem::__file_clock): Move to ...
254 * include/std/chrono (filesystem::__file_clock): Here.
255 (filesystem::__file_clock::from_sys, filesystem::__file_clock::to_sys):
256 Define public member functions for C++20.
257 (is_clock, is_clock_v): Define traits for C++20.
258 * include/std/condition_variable (condition_variable::wait_until): Add
259 check for valid clock.
260 * include/std/future (_State_baseV2::wait_until): Likewise.
261 * include/std/mutex (__timed_mutex_impl::_M_try_lock_until): Likewise.
262 * include/std/shared_mutex (shared_timed_mutex::try_lock_shared_until):
263 Likewise.
264 * include/std/thread (this_thread::sleep_until): Likewise.
265 * testsuite/30_threads/condition_variable/members/2.cc: Qualify
266 slow_clock with new namespace.
267 * testsuite/30_threads/condition_variable/members/clock_neg.cc: New
268 test.
269 * testsuite/30_threads/condition_variable_any/members/clock_neg.cc:
270 New test.
271 * testsuite/30_threads/future/members/clock_neg.cc: New test.
272 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/3.cc:
273 Qualify slow_clock with new namespace.
274 * testsuite/30_threads/recursive_timed_mutex/try_lock_until/
275 clock_neg.cc: New test.
276 * testsuite/30_threads/shared_future/members/clock_neg.cc: New
277 test.
278 * testsuite/30_threads/shared_lock/locking/clock_neg.cc: New test.
279 * testsuite/30_threads/shared_timed_mutex/try_lock_until/clock_neg.cc:
280 New test.
281 * testsuite/30_threads/timed_mutex/try_lock_until/3.cc: Qualify
282 slow_clock with new namespace.
283 * testsuite/30_threads/timed_mutex/try_lock_until/4.cc: Likewise.
284 * testsuite/30_threads/timed_mutex/try_lock_until/clock_neg.cc: New
285 test.
286 * testsuite/30_threads/unique_lock/locking/clock_neg.cc: New test.
287 * testsuite/std/time/traits/is_clock.cc: New test.
288 * testsuite/util/slow_clock.h (slow_clock): Move to __gnu_test
289 namespace.
290
9fc98511
JW
2912020-03-21 Jonathan Wakely <jwakely@redhat.com>
292
a577c0c2
JW
293 PR libstdc++/93245
294 * include/experimental/bits/fs_path.h (path::generic_string<C,T,A>()):
295 * testsuite/experimental/filesystem/path/generic/generic_string.cc:
296 Improve test coverage.
297
9fc98511
JW
298 PR libstdc++/94242
299 * include/bits/fs_path.h (path::_S_str_convert): Replace first
300 parameter with basic_string_view so that strings with different
301 allocators can be accepted.
302 (path::generic_string<C,T,A>()): Use basic_string object that uses the
303 right allocator type.
304 * testsuite/27_io/filesystem/path/generic/94242.cc: New test.
305 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Improve
306 test coverage.
307
98f29f56
JW
3082020-03-18 Jonathan Wakely <jwakely@redhat.com>
309
b3341826
JW
310 PR libstdc++/94033
311 * include/std/type_traits (__is_nt_default_constructible_atom): Remove.
312 (__is_nt_default_constructible_impl): Remove.
313 (__is_nothrow_default_constructible_impl): Remove.
314 (__is_nt_constructible_impl): Add bool template parameter. Adjust
315 partial specializations.
316 (__is_nothrow_constructible_impl): Replace class template with alias
317 template.
318 (is_nothrow_default_constructible): Derive from alias template
319 __is_nothrow_constructible_impl instead of
320 __is_nothrow_default_constructible_impl.
321 * testsuite/20_util/is_nothrow_constructible/94003.cc: New test.
322
e5de406f
JW
323 * include/std/stop_token (stop_token::_Stop_state_ref): Define
324 comparison operators explicitly if the compiler won't synthesize them.
325
07522ae9
JW
326 * include/bits/stl_algobase.h (__lexicographical_compare_aux): Check
327 __cpp_lib_concepts before using iter_reference_t.
328 * include/bits/stream_iterator.h (istream_iterator): Check
329 __cpp_lib_concepts before using default_sentinel_t.
330 * include/bits/streambuf_iterator.h (istreambuf_iterator): Likewise.
331
98f29f56
JW
332 PR libstdc++/94203
333 * include/experimental/executor (executor::executor(Executor)): Call
334 make_shared directly instead of _M_create. Create _Tgt1 object.
335 (executor::executor(allocator_arg_t, const ProtoAlloc&, Executor)):
336 Call allocate_shared directly instead of _M_create. Create _Tgt2
337 object.
338 (executor::target_type): Add cast needed for new _Tgt interface.
339 (executor::target): Define when RTTI is disabled. Use _Tgt::_M_func.
340 (executor::_Tgt): Define the same interface whether RTTI is enabled or
341 not.
342 (executor::_Tgt::target_type, executor::_Tgt::target): Do not use
343 std::type_info in the interface.
344 (executor::_Tgt::_M_func): Add data member.
345 (executor::_TgtImpl): Replace with _Tgt1 and _Tgt2 class templates.
346 (executor::_Tgt1::_S_func): Define function to access target without
347 depending on RTTI.
348 (executor::_M_create): Remove.
349 (operator==, operator!=): Simplify comparisons for executor.
350 * include/experimental/socket (is_error_code_enum<socket_errc>):
351 Define specialization before use.
352 * testsuite/experimental/net/executor/1.cc: New test.
353
c62f5e6e
JW
3542020-03-16 Jonathan Wakely <jwakely@redhat.com>
355
356 PR libstdc++/94199
357 * include/experimental/executor (service_already_exists): Add default
358 constructor. Declare make_service to be a friend.
359 * testsuite/experimental/net/execution_context/make_service.cc: New
360 test.
361
fcc443b9
JW
3622020-03-12 Jonathan Wakely <jwakely@redhat.com>
363
364 * testsuite/tr1/8_c_compatibility/cstdlib/functions.cc: Do not pass
365 a null pointer to functions with nonnull(1) attribute.
366
8f0d8cd8
PP
3672020-03-11 Patrick Palka <ppalka@redhat.com>
368
4512b7d8
PP
369 * include/std/ranges (split_view::_OuterIter::_OuterIter): Typo fix,
370 'address' -> 'std::__addressof'.
371 * testsuite/std/ranges/adaptors/split.cc: Test taking the split_view of
372 a non-forward input_range.
373 * testsuite/util/testsuite_iterators.h (output_iterator_wrapper): Make
374 default constructor protected instead of deleted, like with
375 input_iterator_wrapper.
376 (test_range::iterator): Add comment explaining that this type is used
377 only when the underlying wrapper is input_iterator_wrapper or
378 output_iterator_wrapper. Remove delegating defaulted constructor so
379 that the inherited default constructor is used instead.
380
8f0d8cd8
PP
381 LWG 3286 ranges::size is not required to be valid after a call to
382 ranges::begin on an input range
383 * include/std/ranges (subrange::subrange): Split single-argument
384 constructor into two, one constrained by _S_store_size and another by
385 !_S_store_size.
386 (take_view::begin): Call size() before calling ranges::begin(_M_base).
387 * testsuite/std/ranges/adaptors/lwg3286.cc: New test.
388 * testsuite/std/ranges/subrange/lwg3286.cc: New test.
389
3654d49d
JW
3902020-03-10 Jonathan Wakely <jwakely@redhat.com>
391
0b7f1e24
JW
392 * include/std/ranges (split_view::_OuterIter::__at_end): Use __current
393 instead of _M_current.
394 (split_view::_OuterIter::operator++): Likewise.
395
cf0c3a45
JW
396 * include/std/ranges (transform_view::_Iterator::__iter_move): Remove.
397 (transform_view::_Iterator::operator*): Add noexcept-specifier.
398 (transform_view::_Iterator::iter_move): Inline __iter_move body here.
399 (split_view::_OuterIter::__current): Add noexcept.
400 (split_view::_InnerIter::__iter_swap): Remove.
401 (split_view::_InnerIter::__iter_move): Remove.
402 (split_view::_InnerIter::_M_i_current): New accessors.
403 (split_view::_InnerIter::__at_end): Use _M_i_current().
404 (split_view::_InnerIter::operator*): Likewise.
405 (split_view::_InnerIter::operator++): Likewise.
406 (iter_move(const _InnerIter&)): Likewise.
407 (iter_swap(const _InnerIter&, const _InnerIter&)): Likewise.
408 * testsuite/std/ranges/adaptors/split.cc: Check noexcept-specifier
409 for iter_move and iter_swap on split_view's inner iterator.
410
c222eabc
JW
411 PR c++/94117
412 * include/std/ranges (ranges::transform_view::_Iterator::iter_move):
413 Change expression in noexcept-specifier to match function body.
414
3654d49d
JW
415 * testsuite/23_containers/unordered_set/allocator/ext_ptr.cc: Add
416 comment explaining multiple dg-do directives.
417 * testsuite/24_iterators/ostream_iterator/1.cc: Fix do-do directive
418 so test is run as well as compiled.
419
ea182fe6
JW
4202020-03-09 Jonathan Wakely <jwakely@redhat.com>
421
422 PR libstdc++/94063
423 * src/c++17/fs_path.cc (path::operator+=(const path&)): Add kluge to
424 handle concatenations that change the type of the first component.
425 (path::operator+=(basic_string_view<value_type>)): Likewise.
426 * testsuite/27_io/filesystem/path/concat/94063.cc: New test.
427
6d082cd9
PP
4282020-03-06 Patrick Palka <ppalka@redhat.com>
429
6aa2ca21
PP
430 * include/std/ranges (join_view::_Sentinel<_Const>): Befriend
431 join_view::_Sentinel<!_Const>.
432 * testsuite/std/ranges/adaptors/join.cc: Augment test.
433
6d082cd9
PP
434 PR libstdc++/93978
435 * include/bits/range_access.h (__cust_access::_Empty::operator()):
436 Declare return type to be bool instead of auto.
437 * testsuite/std/ranges/adaptors/93978.cc: New test.
438
180eeeae
JW
4392020-03-06 Jonathan Wakely <jwakely@redhat.com>
440
4cdcb2c9 441 PR libstdc++/94069
b0815713
JW
442 * include/std/shared_mutex [!PTHREAD_RWLOCK_INITIALIZER]
443 (__shared_mutex_pthread::__shared_mutex_pthread()): Remove incorrect
444 second argument to __glibcxx_rwlock_init.
445 * testsuite/30_threads/shared_timed_mutex/94069.cc: New test.
446
180eeeae
JW
447 PR libstdc++/93244
448 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Adjust
449 test to not fail due to PR 94063.
450 * testsuite/27_io/filesystem/path/generic/utf.cc: Likewise.
451 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: Likewise.
452
28119fba
AK
4532020-03-06 Andreas Krebbel <krebbel@linux.ibm.com>
454
455 * src/c++11/system_error.cc: Omit the ENOTSUP case statement if it
456 would match ENOSYS.
457
6a705283
JW
4582020-03-05 Jonathan Wakely <jwakely@redhat.com>
459
9412b35a
JW
460 * testsuite/27_io/filesystem/operations/all.cc: Mark unused variable.
461 * testsuite/27_io/filesystem/operations/copy.cc: Fix typo.
462 * testsuite/experimental/filesystem/operations/copy.cc: Likewise.
463 * testsuite/27_io/filesystem/operations/file_size.cc: Use correct type
464 for return value, and in comparison.
465 * testsuite/experimental/filesystem/operations/file_size.cc: Likewise.
466
6a705283
JW
467 PR libstdc++/94051
468 * include/std/string_view: Include <bits/ostream_insert.h>.
469 * testsuite/21_strings/basic_string_view/inserters/94051.cc: New test.
470
94f7d7ec
JW
4712020-03-04 Jonathan Wakely <jwakely@redhat.com>
472
473 * include/bits/cpp_type_traits.h (__memcpyable): Fix comment.
474
05779e2c
PP
4752020-03-04 Patrick Palka <ppalka@redhat.com>
476
712b182a
PP
477 PR libstdc++/94017
478 * include/bits/ranges_algobase.h (__fill_n_fn::operator()): Refine
479 condition for when to use memset, making sure to additionally check that
480 the output pointer's value type is a non-volatile byte type. Instead of
481 requiring that the fill type is a byte type, just require that it's an
482 integral type.
483 * testsuite/20_util/specialized_algorithms/uninitialized_fill/94017.cc:
484 New test.
485 * testsuite/20_util/specialized_algorithms/uninitialized_fill_n/94017.cc:
486 New test.
487 * testsuite/25_algorithms/fill/94013.cc: Uncomment part of test that was
488 blocked by PR 94017.
489 * testsuite/25_algorithms/fill/94017.cc: New test.
490 * testsuite/25_algorithms/fill_n/94017.cc: New test.
491
144dfc68
PP
492 LWG 3355 The memory algorithms should support move-only input iterators
493 introduced by P1207
494 * include/bits/ranges_uninitialized.h
495 (__uninitialized_copy_fn::operator()): Use std::move to avoid attempting
496 to copy __ifirst, which could be a move-only input iterator. Use
497 operator- instead of ranges::distance to compute distance from a sized
498 sentinel.
499 (__uninitialized_copy_n_fn::operator()): Likewise.
500 (__uninitialized_move_fn::operator()): Likewise.
501 (__uninitialized_move_n_fn::operator()): Likewise.
502 (__uninitialized_destroy_fn::operator()): Use std::move to avoid
503 attempting to copy __first.
504 (__uninitialized_destroy_n_fn::operator()): Likewise.
505 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
506 Augment test.
507 * .../specialized_algorithms/uninitialized_copy/constrained.cc:
508 Likewise.
509 * .../specialized_algorithms/uninitialized_move/constrained.cc:
510 Likewise.
511
26af9cd8
PP
512 * testsuite/util/testsuite_iterators.h (test_range::get_iterator): Make
513 protected instead of private.
514 (test_sized_range_sized_sent): New.
515
d6d4b339
PP
516 * testsuite/util/testsuite_iterators.h (input_iterator_wrapper_nocopy):
517 New testsuite iterator.
518 * testsuite/24_iterators/counted_iterator/lwg3389.cc: use it.
519 * testsuite/24_iterators/move_iterator/lwg3390.cc: Likewise.
520
05779e2c
PP
521 * include/bits/ranges_uninitialized.h
522 (uninitialized_copy_fn::operator()): Pass a reference type as the first
523 argument to is_nothrow_assignable_v.
524 (uninitialized_copy_fn::operator()): Likewise.
525 (uninitialized_move_fn::operator()): Likewise. Return an in_out_result
526 with the input iterator stripped of its move_iterator.
527 (uninitialized_move_n_fn::operator()): Likewise.
528 (uninitialized_fill_fn::operator()): Pass a reference type as the first
529 argument to is_nothrow_assignable_v.
530 (uninitialized_fill_n_fn::operator()): Likewise.
531
9b4f00dd
JW
5322020-03-03 Jonathan Wakely <jwakely@redhat.com>
533
462f6c20
JW
534 PR libstdc++/94013
535 * include/bits/cpp_type_traits.h (__memcpyable, __memcmpable): New
536 traits to control when to use memmove and memcmp optimizations.
537 (__is_nonvolatile_trivially_copyable): New helper trait.
538 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Do not
539 use memcmp optimization with volatile data.
540 * include/bits/ranges_algobase.h (__equal_fn): Use __memcmpable.
541 (__copy_or_move, __copy_or_move_backward): Use __memcpyable.
542 * include/bits/stl_algobase.h (__copy_move_a2): Use __memcpyable.
543 (__copy_move_backward_a2): Likewise.
544 (__equal_aux1): Use __memcmpable.
545 (__lexicographical_compare_aux): Do not use memcmp optimization with
546 volatile data.
547 * testsuite/25_algorithms/copy/94013.cc: New test.
548 * testsuite/25_algorithms/copy_backward/94013.cc: New test.
549 * testsuite/25_algorithms/equal/94013.cc: New test.
550 * testsuite/25_algorithms/fill/94013.cc: New test.
551 * testsuite/25_algorithms/lexicographical_compare/94013.cc: New test.
552 * testsuite/25_algorithms/move/94013.cc: New test.
553 * testsuite/25_algorithms/move_backward/94013.cc: New test.
554
9b4f00dd
JW
555 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
556 Avoid redundant iterator comparisons (LWG 3410).
557
5fad0003
JW
5582020-03-02 Jonathan Wakely <jwakely@redhat.com>
559
d112e173
JW
560 PR libstdc++/93972
561 * include/bits/stl_algobase.h (__memcmp): Allow pointer types to
562 differ.
563 * testsuite/25_algorithms/lexicographical_compare/uchar.cc: New test.
564
4c391563
JW
565 * include/std/ranges (__detail::__maybe_empty_t): Rename to
566 __maybe_present_t.
567 (__adaptor::_RangeAdaptor, join_view, split_view): Use new name.
568
5fad0003
JW
569 * include/bits/ranges_algo.h (shift_right): Add 'typename' to
570 dependent type.
571
fed76afb
L
5722020-03-01 H.J. Lu <hongjiu.lu@intel.com>
573
574 * config/abi/post/x86_64-linux-gnu/x32/baseline_symbols.txt: Updated.
575
bd55ce63
JDA
5762020-02-29 John David Anglin <danglin@gcc.gnu.org>
577
566f544c
JDA
578 * testsuite/17_intro/headers/c++1998/charset.cc: Skip on *-*-hpux*.
579 * testsuite/17_intro/headers/c++2011/charset.cc: Likewise.
580 * testsuite/17_intro/headers/c++2014/charset.cc: Likewise.
581 * testsuite/17_intro/headers/c++2017/charset.cc: Likewise.
582 * testsuite/17_intro/headers/c++2020/charset.cc: Likewise.
583
bd55ce63
JDA
584 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
585 Add libatomic option.
586 * testsuite/30_threads/jthread/jthread.cc: Likewise.
587
44c85722
FD
5882020-02-29 François Dumont <fdumont@gcc.gnu.org>
589
590 * include/bits/stl_algo.h
591 (__find_if, __count_if, __is_permutation, std::is_permutation): Move...
592 * include/bits/stl_algobase.h: ...here.
593 * include/bits/hashtable_policy.h: Remove <bits/stl_algo.h> include.
594
d4912dc7
JDA
5952020-02-29 John David Anglin <danglin@gcc.gnu.org>
596
68a1a11f
JDA
597 * testsuite/30_threads/stop_token/stop_callback.cc: Add libatomic
598 option.
599 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc:
600 Likewise.
601 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: Likewise.
602 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: Likewise.
603 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: Likewise.
604 * testsuite/30_threads/stop_token/stop_source.cc: Likewise.
605 * testsuite/30_threads/stop_token/stop_source/assign.cc: Likewise.
606 * testsuite/30_threads/stop_token/stop_token.cc: Likewise.
607 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc:
608 Likewise.
609
d4912dc7
JDA
610 PR libstdc++/92906
611 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
612
799270b4
PP
6132020-02-28 Patrick Palka <ppalka@redhat.com>
614
ce33801f
PP
615 PR libstdc++/93972
616 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
617 Fix condition for when to use memcmp, making it consistent with the
618 corresponding condition used in std::lexicographical_compare.
619 * testsuite/25_algorithms/lexicographical_compare/93972.cc: New test.
620
799270b4
PP
621 * testsuite/26_numerics/headers/numeric/synopsis.cc: Add signatures for
622 functions introduced in C++11, C++17 and C++2a. Add 'constexpr' to
623 existing signatures for C++2a.
624
4735f92d
JW
6252020-02-28 Jonathan Wakely <jwakely@redhat.com>
626
627 * testsuite/24_iterators/range_operations/advance_debug_neg.cc: Run
628 test instead of just compiling it.
629
a1535015
PP
6302020-02-28 Patrick Palka <ppalka@redhat.com>
631
77e596cf
PP
632 * include/std/ranges (reverse_view::_S_needs_cached_begin): Set to false
633 whenever the underlying range models common_range.
634
a1535015
PP
635 * include/std/ranges (__detail::_CachedPosition): New struct.
636 (views::filter_view::_S_needs_cached_begin): New member variable.
637 (views::filter_view::_M_cached_begin): New member variable.
638 (views::filter_view::begin): Use _M_cached_begin to cache its
639 result.
640 (views::drop_view::_S_needs_cached_begin): New static member variable.
641 (views::drop_view::_M_cached_begin): New member variable.
642 (views::drop_view::begin): Use _M_cached_begin to cache its result
643 when _S_needs_cached_begin.
644 (views::drop_while_view::_M_cached_begin): New member variable.
645 (views::drop_while_view::begin): Use _M_cached_begin to cache its
646 result.
647 (views::reverse_view::_S_needs_cached_begin): New static member
648 variable.
649 (views::reverse_view::_M_cached_begin): New member variable.
650 (views::reverse_view::begin): Use _M_cached_begin to cache its result
651 when _S_needs_cached_begin.
652 * testsuite/std/ranges/adaptors/drop.cc: Augment test to check that
653 drop_view::begin caches its result.
654 * testsuite/std/ranges/adaptors/drop_while.cc: Augment test to check
655 that drop_while_view::begin caches its result.
656 * testsuite/std/ranges/adaptors/filter.cc: Augment test to check that
657 filter_view::begin caches its result.
658 * testsuite/std/ranges/adaptors/reverse.cc: Augment test to check that
659 reverse_view::begin caches its result.
660
86e2dc22
JW
6612020-02-28 Jonathan Wakely <jwakely@redhat.com>
662
a51a546c
JW
663 * testsuite/27_io/filesystem/operations/last_write_time.cc: Fixes for
664 filesystems that silently truncate timestamps.
665 * testsuite/experimental/filesystem/operations/last_write_time.cc:
666 Likewise.
667
86e2dc22
JW
668 * testsuite/21_strings/basic_string/cons/char/1.cc: Disable
669 -Wstringop-overflow warnings.
670
44949494
JW
6712020-02-27 Jonathan Wakely <jwakely@redhat.com>
672
673 * testsuite/lib/libstdc++.exp (v3_target_compile): Add
674 -fdiagnostics-urls=never to options.
675
10a32d47
PP
6762020-02-27 Patrick Palka <ppalka@redhat.com>
677
ba49e9eb
PP
678 * include/std/ranges (transform_view::_Iterator<_Const>): Befriend
679 _Iterator<!_Const>.
680 (transform_view::_Sentinel<_Const>): Befriend _Sentinel<!_Const>.
681 (take_view::_Sentinel<_Const>): Likewise.
682 (take_while_view::_Sentinel<_Const>): Likewise.
683 (split_view::_OuterIter<_Const>): Befriend _OuterIter<!_Const>.
684 * testsuite/std/ranges/adaptors/split.cc: Augment test.
685 * testsuite/std/ranges/adaptors/take.cc: Augment test.
686 * testsuite/std/ranges/adaptors/take_while.cc: Augment test.
687 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
688
10a32d47
PP
689 * testsuite/25_algorithms/copy/constrained.cc: Don't assume that the
690 base() of a vector<>::iterator is a pointer.
691 * testsuite/25_algorithms/copy_backward/constrained.cc: Likewise.
692 * testsuite/25_algorithms/move/constrained.cc: Likewise.
693 * testsuite/25_algorithms/move_backward/constrained.cc: Likewise.
694 * testsuite/25_algorithms/inplace_merge/constrained.cc: Use foo.data()
695 instead of &foo[0].
696 * testsuite/25_algorithms/partial_sort/constrained.cc: Likewise.
697 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: Likewise.
698 * testsuite/25_algorithms/shuffle/constrained.cc: Likewise.
699 * testsuite/25_algorithms/sort/constrained.cc: Likewise.
700 * testsuite/25_algorithms/stable_sort/constrained.cc: Likewise.
701
eb8e6a30
JW
7022020-02-27 Jonathan Wakely <jwakely@redhat.com>
703
ae705159
JW
704 * include/debug/array (operator<=>): Define for C++20.
705 * testsuite/23_containers/array/tuple_interface/get_debug_neg.cc:
706 Adjust dg-error line numbers.
707 * testsuite/23_containers/array/tuple_interface/
708 tuple_element_debug_neg.cc: Likewise.
709
b112e3cb
JW
710 * testsuite/23_containers/span/back_assert_neg.cc: Add #undef before
711 defining _GLIBCXX_ASSERTIONS.
712 * testsuite/23_containers/span/first_2_assert_neg.cc: Likewise.
713 * testsuite/23_containers/span/first_assert_neg.cc: Likewise.
714 * testsuite/23_containers/span/front_assert_neg.cc: Likewise.
715 * testsuite/23_containers/span/index_op_assert_neg.cc: Likewise.
716 * testsuite/23_containers/span/last_2_assert_neg.cc: Likewise.
717 * testsuite/23_containers/span/last_assert_neg.cc: Likewise.
718 * testsuite/23_containers/span/subspan_2_assert_neg.cc: Likewise.
719 * testsuite/23_containers/span/subspan_3_assert_neg.cc: Likewise.
720 * testsuite/23_containers/span/subspan_4_assert_neg.cc: Likewise.
721 * testsuite/23_containers/span/subspan_5_assert_neg.cc: Likewise.
722 * testsuite/23_containers/span/subspan_6_assert_neg.cc: Likewise.
723 * testsuite/23_containers/span/subspan_assert_neg.cc: Likewise.
724
f32a3662
JW
725 * include/debug/string (__gnu_debug::basic_string::insert): Fix for
726 C++98 where the member function of the base class returns void.
727
e94f2542
JW
728 * testsuite/util/testsuite_iterators.h (forward_iterator_wrapper): Add
729 equality comparisons that support value-initialized iterators.
730
eb8e6a30
JW
731 * include/bits/boost_concept_check.h (__function_requires): Add
732 _GLIBCXX14_CONSTEXPR.
733 * testsuite/25_algorithms/min/concept_checks.cc: New test.
734
fd335985
PP
7352020-02-26 Patrick Palka <ppalka@redhat.com>
736
8ce13842
PP
737 PR libstdc++/93936
738 * include/std/ranges (split_view::_InnerIter::operator==): Compare
739 the operands' _M_i rather than their _M_i.current().
740 * testsuite/std/ranges/adaptors/split.cc: Augment test.
741
fd335985
PP
742 P1645R1 constexpr for <numeric> algorithms
743 * include/bits/stl_numeric.h (iota, accumulate, inner_product,
744 partial_sum, adjacent_difference): Make conditionally constexpr for
745 C++20.
746 * include/std/numeric (__cpp_lib_constexpr_numeric): Define this feature
747 test macro.
748 (reduce, transform_reduce, exclusive_scan, inclusive_scan,
749 transform_exclusive_scan, transform_inclusive_scan): Make conditionally
750 constexpr for C++20.
751 * include/std/version (__cpp_lib_constexpr_numeric): Define.
752 * testsuite/26_numerics/accumulate/constexpr.cc: New test.
753 * testsuite/26_numerics/adjacent_difference/constexpr.cc: Likewise.
754 * testsuite/26_numerics/exclusive_scan/constexpr.cc: Likewise.
755 * testsuite/26_numerics/inclusive_scan/constexpr.cc: Likewise.
756 * testsuite/26_numerics/inner_product/constexpr.cc: Likewise.
757 * testsuite/26_numerics/iota/constexpr.cc: Likewise.
758 * testsuite/26_numerics/partial_sum/constexpr.cc: Likewise.
759 * testsuite/26_numerics/reduce/constexpr.cc: Likewise.
760 * testsuite/26_numerics/transform_exclusive_scan/constexpr.cc: Likewise.
761 * testsuite/26_numerics/transform_inclusive_scan/constexpr.cc: Likewise.
762 * testsuite/26_numerics/transform_reduce/constexpr.cc: Likewise.
763
8017d95c
JW
7642020-02-26 Jonathan Wakely <jwakely@redhat.com>
765
113f0a63
JW
766 * include/bits/ranges_algo.h (__lexicographical_compare_fn): Declare
767 variables in smaller scope and avoid calling ranges::distance when we
768 know they are pointers. Remove statically-unreachable use of
769 __builtin_unreachable().
770 * include/bits/stl_algobase.h (__lexicographical_compare::__lc):
771 Define inline.
772
8017d95c
JW
773 * include/std/ranges (__detail::__maybe_empty_t): Define new helper
774 alias.
775 (__detail::__maybe_const_t): Likewise.
776 (__adaptor::_RangeAdaptor): Use __maybe_empty_t.
777 (transform_view, take_view, take_while_view, elements_view): Use
778 __maybe_const_t.
779 (join_view, split_view): Use both.
780
7f0f1083
PP
7812020-02-25 Patrick Palka <ppalka@redhat.com>
782
76a8c0f6
PP
783 LWG 3397 basic_istream_view::iterator should not provide
784 iterator_category
785 * include/std/ranges (basic_istream_view:_Iterator::iterator_category):
786 Rename to ...
787 (basic_istream_view:_Iterator::iterator_concept): ... this.
788 * testsuite/std/ranges/istream_view.cc: Augment test.
789
ec15da7c
PP
790 LWG 3325 Constrain return type of transformation function for
791 transform_view
792 * include/std/ranges (transform_view): Constrain the return type of the
793 transformation function as per LWG 3325.
794 * testsuite/std/ranges/adaptors/lwg3325_neg.cc: New test.
795
55c4b3f4
PP
796 LWG 3313 join_view::_Iterator::operator-- is incorrectly constrained
797 * include/std/ranges (join_view::_Iterator::operator--): Require that
798 range_reference_t<_Base> models common_range.
799 * testsuite/std/ranges/adaptors/lwg3313_neg.cc: New test.
800
510bd1c1
PP
801 LWG 3301 transform_view::_Iterator has incorrect iterator_category
802 * include/std/ranges (transform_view::_Iterator::_S_iter_cat): Adjust
803 determination of iterator_category as per LWG 3301.
804 * testsuite/std/ranges/adaptors/transform.cc: Augment test.
805
7f0f1083
PP
806 LWG 3292 iota_view is under-constrained
807 * include/std/ranges (iota_view): Require that _Winc models semiregular
808 as per LWG 3292.
809 * testsuite/std/ranges/iota/lwg3292_neg.cc: New test.
810
dfb93d05 8112020-02-25 Jonathan Wakely <jwakely@redhat.com>
5b904f17 812
490350a1
JW
813 * include/bits/ranges_algobase.h (__copy_or_move): Do not use memmove
814 during constant evaluation. Call __builtin_memmove directly instead of
815 __memmove.
816 (__copy_or_move_backward): Likewise.
817 * include/bits/stl_algobase.h (__memmove): Remove.
818 (__copy_move<M, true, random_access_iterator_tag>::__copy_m)
819 (__copy_move_backward<M, true, random_access_iterator_tag>::__copy_m):
820 Use __builtin_memmove directly instead of __memmove.
821 (__copy_move_a2): Do not use memmove during constant evaluation.
822 (__copy_move_backward_a2): Use _IsMove constant to select correct
823 __copy_move_backward specialization.
824 * testsuite/25_algorithms/copy_backward/constexpr.cc: Check for copies
825 begin turned into moves during constant evaluation.
826
6de946e6
JW
827 * testsuite/25_algorithms/move_backward/93872.cc: Add test left out of
828 previous commit.
829
5b904f17
JW
830 PR libstdc++/93872
831 * include/bits/stl_algobase.h (__memmove): Cast away const before
832 doing move assignment.
833 * testsuite/25_algorithms/move/93872.cc: New test.
834 * testsuite/25_algorithms/move_backward/93872.cc: New test.
835
c5eab4ed
PP
8362020-02-24 Patrick Palka <ppalka@redhat.com>
837
85c143d0
PP
838 PR libstdc++/93884
839 * include/bits/ranges_algobase.h (__copy_or_move,
840 __copy_or_move_backward): Don't inspect the iter_value_t of the output
841 iterator, instead inspect its iterator_traits directly.
842 * include/bits/stl_iterator.h (back_insert_iterator::container):
843 Conditionally initialize.
844 (back_insert_iterator::difference_type): Conditionally define.
845 (back_insert_iterator::back_insert_iterator): Conditionally define this
846 default constructor.
847 (front_insert_iterator::container): Conditionally initialize.
848 (front_insert_iterator::difference_type): Conditionally define.
849 (front_insert_iterator::front_insert_iterator): Conditionally define
850 this default constructor.
851 * 24_iterators/back_insert_iterator/pr93884.cc: New test.
852 * 24_iterators/front_insert_iterator/pr93884.cc: New test.
853
c5eab4ed
PP
854 P0769R2 Add shift to <algorithm>
855 * include/bits/ranges_algo.h (shift_left, shift_right): New.
856 * testsuite/25_algorithms/shift_left/1.cc: New test.
857 * testsuite/25_algorithms/shift_right/1.cc: New test.
858
3841739c
JW
8592020-02-24 Jonathan Wakely <jwakely@redhat.com>
860
8566286e
JW
861 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
862 Make noexcept-specifier conditional.
863 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc: Check
864 noexcept-specifier.
865
120e8734
JW
866 * include/bits/stream_iterator.h (istream_iterator(default_sentinel_t)):
867 Add constructor.
868 (operator==(istream_iterator, default_sentinel_t)): Add operator.
869 (ostream_iterator::difference_type): Define to ptrdiff_t for C++20.
870 * include/bits/streambuf_iterator.h
871 (istreambuf_iterator(default_sentinel_t)): Add constructor.
872 (operator==(istreambuf_iterator, default_sentinel_t)): Add operator.
873 * testsuite/24_iterators/istream_iterator/cons/sentinel.cc:
874 New test.
875 * testsuite/24_iterators/istream_iterator/sentinel.cc: New test.
876 * testsuite/24_iterators/istreambuf_iterator/cons/sentinel.cc:
877 New test.
878 * testsuite/24_iterators/istreambuf_iterator/sentinel.cc: New test.
879
3841739c
JW
880 * include/std/ranges (__deep_const_range, __enable_view_impl): Remove.
881 (ranges::enable_view): Simplify (LWG 3326).
882 * include/bits/range_access.h (ranges::enable_view): Declare.
883 * include/bits/regex.h (__enable_view_impl): Remove partial
884 specialization.
885 * include/bits/stl_multiset.h (__enable_view_impl): Likewise.
886 * include/bits/stl_set.h (__enable_view_impl): Likewise.
887 * include/bits/unordered_set.h (__enable_view_impl): Likewise.
888 * include/debug/multiset.h (__enable_view_impl): Likewise.
889 * include/debug/set.h (__enable_view_impl): Likewise.
890 * include/debug/unordered_set (__enable_view_impl): Likewise.
891 * include/experimental/string_view (ranges::enable_view): Define
892 partial specialization.
893 * include/std/span (ranges::enable_view): Likewise.
894 * include/std/string_view (ranges::enable_view): Likewise.
895 * testsuite/std/ranges/view.cc: Check satisfaction of updated concept.
896
9e589880
JW
8972020-02-21 Jonathan Wakely <jwakely@redhat.com>
898
899 * include/std/optional (operator<=>(optional<T>, optional<U>))
900 (operator<=>(optional<T>, nullopt), operator<=>(optional<T>, U)):
901 Define for C++20.
902 * include/std/tuple (__tuple_cmp): New helper function for <=>.
903 (operator<=>(tuple<T...>, tuple<U>...)): Define for C++20.
904 * include/std/variant (operator<=>(variant<T...>, variant<T...>))
905 (operator<=>(monostate, monostate)): Define for C++20.
906 * testsuite/20_util/optional/relops/three_way.cc: New test.
907 * testsuite/20_util/tuple/comparison_operators/three_way.cc: New test.
908 * testsuite/20_util/variant/89851.cc: Move to ...
909 * testsuite/20_util/variant/relops/89851.cc: ... here.
910 * testsuite/20_util/variant/90008.cc: Move to ...
911 * testsuite/20_util/variant/relops/90008.cc: ... here.
912 * testsuite/20_util/variant/relops/three_way.cc: New test.
913
5586e506
PP
9142020-02-20 Patrick Palka <ppalka@redhat.com>
915
6e63438a
PP
916 * include/std/ranges (views::__adaptor::__maybe_refwrap): New utility
917 function.
918 (views::__adaptor::_RangeAdaptor::operator()): Add comments. Use
919 __maybe_refwrap to capture lvalue references by reference, and then use
920 unwrap_reference_t to forward the by-reference captures as references.
921 * testsuite/std/ranges/adaptors/split.cc: Augment test.
922 * testsuite/std/ranges/adaptors/split_neg.cc: New test.
923
5586e506
PP
924 * include/std/ranges (iota_view): Forward declare _Sentinel.
925 (iota_view::_Iterator): Befriend _Sentinel.
926 (iota_view::_Sentinel::_M_equal): New member function.
927 (iota_view::_Sentinel::operator==): Use it.
928 (views::_Iota::operator()): Forward __f using the correct type.
929 * testsuite/std/ranges/access/ssize.cc (test06): Don't call views::iota
930 with integers of different signedness, to appease iota_view's deduction
931 guide.
932 * testsuite/std/ranges/iota/iota_view.cc: Augment test.
933
c7b591f3
JW
9342020-02-20 Jonathan Wakely <jwakely@redhat.com>
935
e817c23f
JW
936 * include/bits/range_access.h (ranges::begin): Reject array of
937 incomplete type.
938 (ranges::end, ranges::size): Require arrays to be bounded.
939 (ranges::data): Require lvalue or borrowed_range.
940 (ranges::iterator_t): Remove constraint.
941 * testsuite/std/ranges/access/begin.cc: Do not check array of
942 incomplete type.
943 * testsuite/std/ranges/access/begin_neg.cc: New test.
944 * testsuite/std/ranges/access/end_neg.cc: Adjust expected error.
945 * testsuite/std/ranges/access/size_neg.cc: Adjust expected error.
946 * testsuite/std/ranges/access/ssize.cc: Do not check array of
947 incomplete type.
948
4be779f5
JW
949 * include/std/system_error (error_category::operator<=>)
950 (operator<=>(const error_code&, const error_code&))
951 (operator<=>(const error_condition&, const error_condition&)): Define
952 for C++20.
953 * testsuite/19_diagnostics/error_category/operators/less.cc: New test.
954 * testsuite/19_diagnostics/error_category/operators/three_way.cc: New
955 test.
956 * testsuite/19_diagnostics/error_code/operators/equal.cc: Remove
957 incorrect comment.
958 * testsuite/19_diagnostics/error_code/operators/less.cc: New test.
959 * testsuite/19_diagnostics/error_code/operators/not_equal.cc: Remove
960 incorrect comment.
961 * testsuite/19_diagnostics/error_code/operators/three_way.cc: New test.
962 * testsuite/19_diagnostics/error_condition/operators/equal.cc: Remove
963 incorrect comment.
964 * testsuite/19_diagnostics/error_condition/operators/less.cc: New test.
965 * testsuite/19_diagnostics/error_condition/operators/not_equal.cc:
966 Remove incorrect comment.
967 * testsuite/19_diagnostics/error_condition/operators/three_way.cc: New
968 test.
969
20fa41e6
JW
970 * libsupc++/typeinfo (type_info::operator!=): Remove for C++20.
971
c7b591f3
JW
972 * include/std/thread (thread::id::operator<=>): Define for C++20.
973 * testsuite/30_threads/thread/id/70294.cc: Do not take addresses of
974 functions in namespace std.
975 * testsuite/30_threads/thread/id/operators_c++20.cc: New test.
976
38c7b74d
PP
9772020-02-19 Patrick Palka <ppalka@redhat.com>
978
979 * testsuite/std/ranges/adaptors/split.cc (test03): Don't include the
980 null terminator of the underlying string as part of the test_range.
981 (main): Call test03.
982
a45fb21a
JW
9832020-02-19 Jonathan Wakely <jwakely@redhat.com>
984
1b425f3a
JW
985 * include/bits/stl_iterator.h (common_iterator): Add copyable<I>
986 requirement (LWG 3385).
987 * testsuite/24_iterators/headers/iterator/synopsis_c++20.cc: Adjust
988 expected declaration.
989
7433536b
JW
990 * include/std/ranges (take_while_view, drop_view, drop_while_view)
991 (elements_view:_Iterator): Initialize data members (LWG 3364).
992
256f67aa
JW
993 * libsupc++/compare (three_way_comparable): Remove always-false check
994 that should have been removed with weak_equality (P1959R0).
995 (three_way_comparable_with): Likewise. Reorder requirements (LWG 3360).
996
0294dc5f
JW
997 * include/std/concepts (__detail::__partially_ordered_with): Move here
998 from <compare>.
999 (totally_ordered, totally_ordered_with): Use __partially_ordered_with
1000 to simplify definition (LWG 3331).
1001 * libsupc++/compare (__detail::__partially_ordered_with): Move to
1002 <concepts>.
1003
241ed965
JW
1004 * include/std/concepts (totally_ordered_with): Remove redundant
1005 requirement (LWG 3329).
1006
77f5310f
JW
1007 * include/std/ranges (__detail::__convertible_to_non_slicing): New
1008 helper concept.
1009 (__detail::__pair_like_convertible_to): Remove.
1010 (__detail::__pair_like_convertible_from): Add requirements for
1011 non-slicing conversions.
1012 (subrange): Constrain constructors with __convertible_to_non_slicing.
1013 Remove constructors from pair-like types. Add new deduction guide.
1014 * testsuite/std/ranges/subrange/lwg3282_neg.cc: New test.
1015
59aa9e57
JW
1016 * include/bits/iterator_concepts.h (iter_move): Add declaration to
1017 prevent unqualified lookup finding a suitable declaration (LWG 3247).
1018
e89100ef
JW
1019 * include/std/memory_resource (polymorphic_allocator::allocate)
1020 (polymorphic_allocator::allocate_object): Change type of exception to
1021 bad_array_new_length (LWG 3237).
1022 * testsuite/20_util/polymorphic_allocator/lwg3237.cc: New test.
1023
bb54e0b8
JW
1024 * include/std/type_traits (__cpp_lib_unwrap_ref): Define (LWG 3348).
1025 * include/std/version (__cpp_lib_unwrap_ref): Likewise.
1026 * testsuite/20_util/unwrap_reference/1.cc: Check macro.
1027 * testsuite/20_util/unwrap_reference/3.cc: New test.
1028
5f031f97
JW
1029 * include/std/numeric (midpoint(T8, T*)): Do not check for complete
1030 type during overload resolution, use static assert instead (LWG 3200).
1031 * testsuite/26_numerics/midpoint/pointer.cc: Do not test with
1032 incomplete type.
1033 * testsuite/26_numerics/midpoint/pointer_neg.cc: New test.
1034
66ae31eb
JW
1035 * include/std/span (span(T (&)[N])): Use non-deduced context to
1036 prevent first parameter from interfering with class template argument
1037 deduction (LWG 3369).
1038 * testsuite/23_containers/span/deduction.cc: Add missing 'const'.
1039 * testsuite/23_containers/span/lwg3255.cc: Check for construction from
1040 rvalues.
1041
247f410b
JW
1042 * include/std/span (span::const_iterator, span::const_reverse_iterator)
1043 (span::cbegin(), span::cend(), span::crbegin(), span::crend()):
1044 Remove (LWG 3320).
1045 * testsuite/23_containers/span/everything.cc: Replace uses of cbegin
1046 and cend.
1047 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc:
1048 Likewise.
1049 * testsuite/20_util/specialized_algorithms/uninitialized_copy/
1050 constrained.cc: Likewise.
1051 * testsuite/20_util/specialized_algorithms/
1052 uninitialized_default_construct/constrained.cc: Likewise.
1053 * testsuite/20_util/specialized_algorithms/uninitialized_fill/
1054 constrained.cc: Likewise.
1055 * testsuite/20_util/specialized_algorithms/uninitialized_move/
1056 constrained.cc: Likewise.
1057 * testsuite/20_util/specialized_algorithms/
1058 uninitialized_value_construct/constrained.cc: Likewise.
1059
aca60ecf
JW
1060 * include/bits/range_access.h (range_size_t): Define alias template.
1061 * include/std/ranges (all_view): Rename to views::all_t (LWG 3335).
1062 * testsuite/std/ranges/adaptors/filter.cc: Adjust to new name.
1063
4cc3b275
JW
1064 * include/std/ranges (filter_view, transform_view, take_view)
1065 (join_view, split_view, reverse_view): Remove commented-out converting
1066 constructors (LWG 3280).
1067
5f3641d0
JW
1068 * include/std/memory (uninitialized_construct_using_allocator): Use
1069 std::construct_at (LWG 3321).
1070
020a03ee
JW
1071 * include/std/memory_resource (polymorphic_allocator::allocate_bytes)
1072 (polymorphic_allocator::allocate_object)
1073 (polymorphic_allocator::new_object): Add nodiscard attribute (LWG3304).
1074
15411a64
JW
1075 LWG 3379. "safe" in several library names is misleading
1076 * include/bits/range_access.h (enable_safe_range): Rename to
1077 enable_borrowed_range.
1078 (__detail::__maybe_safe_range): Rename to __maybe_borrowed_range.
1079 (safe_range): Rename to borrowed_range.
1080 * include/bits/ranges_algo.h: Adjust to use new names.
1081 * include/bits/ranges_algobase.h: Likewise.
1082 * include/bits/ranges_uninitialized.h: Likewise.
1083 * include/std/ranges: Likewise.
1084 (safe_iterator_t): Rename to borrowed_iterator_t.
1085 (safe_subrange_t): Rename to borrowed_subrange_t.
1086 * include/std/span: Adjust to use new names.
1087 * include/std/string_view: Likewise.
1088 * include/experimental/string_view: Likewise.
1089 * testsuite/std/ranges/access/begin.cc: Likewise.
1090 * testsuite/std/ranges/access/cbegin.cc: Likewise.
1091 * testsuite/std/ranges/access/cdata.cc: Likewise.
1092 * testsuite/std/ranges/access/cend.cc: Likewise.
1093 * testsuite/std/ranges/access/crbegin.cc: Likewise.
1094 * testsuite/std/ranges/access/crend.cc: Likewise.
1095 * testsuite/std/ranges/access/data.cc: Likewise.
1096 * testsuite/std/ranges/access/end.cc: Likewise.
1097 * testsuite/std/ranges/access/rbegin.cc: Likewise.
1098 * testsuite/std/ranges/access/rend.cc: Likewise.
1099 * testsuite/std/ranges/safe_range.cc: Likewise.
1100 * testsuite/std/ranges/safe_range_types.cc: Likewise.
1101 * testsuite/util/testsuite_iterators.h: Likewise.
1102
fa89adaa
JW
1103 * include/std/ranges (tuple_element<0, const subrange<I, S, K>>)
1104 (tuple_element<1, const subrange<I, S, K>>): Add partial
1105 specializations (LWG 3398).
1106 * testsuite/std/ranges/subrange/tuple_like.cc: New test.
1107
a45fb21a
JW
1108 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1109 (__adjacent_find_fn, __remove_if_fn, __remove_copy_if_fn)
1110 (__unique_fn, __unique_copy_fn): Remove redundant conversions to bool.
1111
242b4fb7
PP
11122020-02-18 Patrick Palka <ppalka@redhat.com>
1113
1114 P1983R0 Wording for GB301, US296, US292, US291, and US283
1115 * include/std/ranges (filter_view::pred): New member function.
1116 (join_view::_Iterator::_Iterator): Remove now-redundant comment since
1117 P1983R0 fixes the highlighted issue in the same way.
1118 (join_view::_Iterator<_Const>): Add friend
1119 join_view::_Iterator<!_Const>.
1120 (join_view::_M_inner): Remove mutable specifier, effectively reverting
1121 the proposed wording changes of P3278.
1122 (join_view::begin): Refine the condition for when to return a const
1123 iterator.
1124 (split_view::_OuterIter::_OuterIter): Adjust constraints.
1125 * testsuite/std/ranges/adaptors/filter.cc: Test that filter_view::pred
1126 exists and works.
1127
f5b4dc38
JW
11282020-02-18 Jonathan Wakely <jwakely@redhat.com>
1129
a5b213dd
JW
1130 PR libstdc++/93818
1131 * include/std/ranges (_RangeAdaptor): Add deduction guide.
1132 (filter_view::_Iterator): Add alias _Vp_iter and use in place of
1133 iterator_t<_Vp>.
1134 (filter_view::_Iterator::_S_iter_cat()): Add 'typename'.
1135 (transform_view::_Iterator): Add alias _Base_iter and use in place of
1136 iterator_t<_Base>.
1137 (transform_view::_Iterator::_S_iter_cat()): Add 'typename'.
1138 (join_view::_Iterator): Add _Outer_iter and _Inner_iter aliases.
1139 (join_view::_Iterator::_S_iter_cat()): Add 'typename'.
1140 (split_view::_InnerIter::_S_iter_cat()): Likewise.
1141
ce7b39d0
JW
1142 * testsuite/20_util/integer_comparisons/equal.cc: Fix invalid
1143 assumption that long is wider than int.
1144 * testsuite/20_util/integer_comparisons/greater_equal.cc: Likewise.
1145 * testsuite/20_util/integer_comparisons/less.cc: Likewise.
1146 * testsuite/20_util/integer_comparisons/less_equal.cc: Likewise.
1147 * testsuite/20_util/integer_comparisons/not_equal.cc: Likewise.
1148
9b8e2dea
JW
1149 P1976R2 Fixed-size span construction from dynamic range
1150 * include/std/span (__cpp_lib_span): Update value.
1151 (span(It, size_type), span(It, End)): Make conditionally explicit. Add
1152 assertion.
1153 (span(R&&), span(const span<OType, OExtent>&)): Likewise and relax
1154 constraints.
1155 (span::first<Count>(), span::last<Count>()): Use explicit type in
1156 return statement.
1157 (as_bytes, as_writable_bytes): Likewise.
1158 * include/std/version (__cpp_lib_span): Update value.
1159 * testsuite/23_containers/span/1.cc: Check new value.
1160 * testsuite/23_containers/span/2.cc: Check new value.
1161 * testsuite/23_containers/span/explicit.cc: New test.
1162
d6c9e372
JW
1163 * include/std/span (span::__is_compatible_array): Simplify alias
1164 template by using requires-clause.
1165 (span::__is_compatible_ref): New alias template for constraining
1166 constructors.
1167 (span::__is_compatible_iterator, span::__is_compatible_range): Remove.
1168 (span(It, size_type), span(It, End)): Use __is_compatible_ref.
1169 (span(T(&)[N], span(array<T, N>&), span(const array<T, N>&)): Remove
1170 redundant parentheses.
1171 (span(R&&)): Add missing constraints.
1172
f09f3242
JW
1173 * include/std/span (span): Reorder members and rename template
1174 parameters to match declarations in the C++2a working paper.
1175
f5b4dc38
JW
1176 P2116R0 Remove tuple-like protocol support from fixed-extent span
1177 * include/std/span (get, tuple_size, tuple_element): Remove.
1178 * testsuite/23_containers/span/everything.cc: Remove checks for
1179 tuple-like API.
1180 * testsuite/23_containers/span/get_neg.cc: Remove.
1181 * testsuite/23_containers/span/tuple_element_dynamic_neg.cc: Remove.
1182 * testsuite/23_containers/span/tuple_element_oob_neg.cc: Remove.
1183 * testsuite/23_containers/span/tuple_size_neg.cc: Remove.
1184
f3169941
PP
11852020-02-17 Patrick Palka <ppalka@redhat.com>
1186
aa667c3f
PP
1187 P2106R0 Alternative wording for GB315 and GB316
1188 * include/bits/ranges_algo.h (in_fun_result): New.
1189 (for_each_result, for_each_n_result): Change into an alias of
1190 in_fun_result.
1191 (in_in_result): New.
1192 (mismatch_result): Change into an alias of in_in_result.
1193 (copy_if_result): Change into an alias of in_out_result.
1194 (swap_ranges_result): Change into an alias of in_in_result.
1195 (unary_transform_result): Change into an alias of in_out_result.
1196 (in_in_out_result): New.
1197 (binary_transform_result): Change into an alias of in_in_out_result.
1198 (replace_copy_result, replace_copy_if_result, remove_copy_if_result,
1199 remove_copy_result, unique_copy_result, reverse_copy_result,
1200 rotate_copy_result, partial_sort_copy_result): Change into an alias of
1201 in_out_result.
1202 (in_out_out_result): New.
1203 (partition_copy_result, merge_result): Change into an alias of
1204 in_out_out_result.
1205 (set_union_result, set_intersection_result): Change into an alias of
1206 in_in_out_result.
1207 (set_difference_result): Change into an alias of in_out_result.
1208 (set_symmetric_difference): Change into an alias of in_in_out_result.
1209 (min_max_result): New.
1210 (minmax_result, minmax_element_result): Change into an alias of
1211 min_max_result.
1212 (in_found_result): New.
1213 (next_permutation_result, prev_permutation_result): Change into an alias
1214 of in_found_result.
1215 (__next_permutation_fn::operator(), __prev_permutation_fn::operator()):
1216 Adjust following changes to next_permutation_result and
1217 prev_permutation_result.
1218 * include/bits/ranges_algobase.h (in_out_result): New.
1219 (copy_result, move_result, move_backward_result, copy_backward_result,
1220 copy_n_result): Change into an alias of in_out_result.
1221 * include/bits/ranges_uninitialized.h (uninitialized_copy_result,
1222 uninitialized_copy_n_result, uninitialized_move_result,
1223 uninitialized_move_n_result): Likewise.
1224 * testsuite/25_algorithms/next_permutation/constrained.cc: Adjust uses of
1225 structured bindings.
1226 * testsuite/25_algorithms/prev_permutation/constrained.cc: Likewise.
1227
f3169941
PP
1228 P1243R4 Rangify new algorithms
1229 * include/bits/ranges_algo.h (for_each_n_result, __for_each_n_fn,
1230 for_each_n, __sample_fn, sample, __clamp_fn, clamp): New.
1231 * testsuite/25_algorithms/clamp/constrained.cc: New test.
1232 * testsuite/25_algorithms/for_each/constrained.cc: Augment test.
1233 * testsuite/25_algorithms/sample/constrained.cc: New test.
1234
98cf2c26
JW
12352020-02-17 Jonathan Wakely <jwakely@redhat.com>
1236
c5e1c1d3
JW
1237 P1964R2 Wording for boolean-testable
1238 * include/bits/ranges_algo.h (__find_fn, __find_first_of_fn)
1239 (__adjacent_find_fn): Cast result of predicate to bool.
1240 * include/std/concepts (__boolean): Remove.
1241 (__detail::__boolean_testable_impl, __detail::__boolean_testable): Add
1242 new helper concepts.
1243 (__detail::__weakly_eq_cmp_with, totally_ordered, totally_ordered_with)
1244 (predicate): Use __boolean_testable instead of boolean.
1245 * libsupc++/compare (__detail::__partially_ordered, _Synth3way):
1246 Likewise.
1247
7ab36231
JW
1248 P1970R2 Consistency for size() functions: Add ranges::ssize
1249 * include/bits/range_access.h (_SSize, ssize): Define for C++20.
1250 * testsuite/std/ranges/access/ssize.cc: New test.
1251
9866abe3
JW
1252 P1956R1 On the names of low-level bit manipulation functions
1253 * include/bits/hashtable_policy.h: Update comment.
1254 * include/std/bit (__ispow2, __ceil2, __floor2, __log2p1): Rename.
1255 (ispow2, ceil2, floor2, log2p1): Likewise.
1256 (__cpp_lib_int_pow2): Add feature test macro.
1257 * include/std/charconv (__to_chars_len_2): Adjust use of __log2p1.
1258 * include/std/memory (assume_aligned): Adjust use of ispow2.
1259 * include/std/version (__cpp_lib_int_pow2): Add.
1260 * libsupc++/new_opa.cc: Adjust use of __ispow2.
1261 * src/c++17/memory_resource.cc: Likewise, and for __ceil2 and __log2p1.
1262 * testsuite/17_intro/freestanding.cc: Adjust use of ispow2.
1263 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Rename to ...
1264 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil.cc: ... here.
1265 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Rename to ...
1266 * testsuite/26_numerics/bit/bit.pow.two/bit_ceil_neg.cc: ... here.
1267 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Rename to ...
1268 * testsuite/26_numerics/bit/bit.pow.two/bit_floor.cc: ... here.
1269 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Rename to ...
1270 * testsuite/26_numerics/bit/bit.pow.two/bit_width.cc: ... here.
1271 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Rename to ...
1272 * testsuite/26_numerics/bit/bit.pow.two/has_single_bit.cc: ... here.
1273
cfbc8fbb
JW
1274 * include/std/charconv: Add comment.
1275
9cd4eeef
JW
1276 PR libstdc++/92546 (partial)
1277 * include/bits/random.h (uniform_random_bit_generator): Move definition
1278 to <bits/uniform_int_dist.h>.
1279 * include/bits/ranges_algo.h: Include <bits/uniform_int_dist.h> instead
1280 of <bits/random.h>.
1281 * include/bits/ranges_algobase.h: Do not include <cmath>.
1282 * include/bits/uniform_int_dist.h (uniform_random_bit_generator):
1283 Move here.
1284 * include/std/ranges: Do not include <limits>.
1285 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
1286
c03b53da
JW
1287 PR libstdc++/92546 (partial)
1288 * include/Makefile.am: Add new header.
1289 * include/Makefile.in: Regenerate.
1290 * include/bits/int_limits.h: New header.
1291 * include/bits/parse_numbers.h (__select_int::_Select_int): Replace
1292 numeric_limits with __detail::__int_limits.
1293 * include/std/bit (__rotl, __rotr, __countl_zero, __countl_one)
1294 (__countr_zero, __countr_one, __popcount, __ceil2, __floor2, __log2p1):
1295 Likewise.
1296 * include/std/charconv (__to_chars_8, __from_chars_binary)
1297 (__from_chars_alpha_to_num, from_chars): Likewise.
1298 * include/std/memory_resource (polymorphic_allocator::allocate)
1299 (polymorphic_allocator::allocate_object): Likewise.
1300 * include/std/string_view (basic_string_view::_S_compare): Likewise.
1301 * include/std/utility (in_range): Likewise.
1302 * testsuite/20_util/integer_comparisons/in_range_neg.cc: Adjust for
1303 extra error about incomplete type __int_limits<bool>.
1304 * testsuite/26_numerics/bit/bit.count/countl_one.cc: Include <limits>.
1305 * testsuite/26_numerics/bit/bit.count/countl_zero.cc: Likewise.
1306 * testsuite/26_numerics/bit/bit.count/countr_one.cc: Likewise.
1307 * testsuite/26_numerics/bit/bit.count/countr_zero.cc: Likewise.
1308 * testsuite/26_numerics/bit/bit.count/popcount.cc: Likewise.
1309 * testsuite/26_numerics/bit/bit.pow.two/ceil2_neg.cc: Likewise.
1310 * testsuite/26_numerics/bit/bit.pow.two/ceil2.cc: Likewise.
1311 * testsuite/26_numerics/bit/bit.pow.two/floor2.cc: Likewise.
1312 * testsuite/26_numerics/bit/bit.pow.two/ispow2.cc: Likewise.
1313 * testsuite/26_numerics/bit/bit.pow.two/log2p1.cc: Likewise.
1314 * testsuite/26_numerics/bit/bit.rotate/rotl.cc: Likewise.
1315 * testsuite/26_numerics/bit/bit.rotate/rotr.cc: Likewise.
1316
4540ef78
JW
1317 * python/libstdcxx/v6/printers.py (StdCmpCatPrinter.to_string): Update
1318 value for partial_ordering::unordered.
1319
d6dfa3da
JW
1320 * include/bits/iterator_concepts.h (indirectly_copyable_storable): Add
1321 const-qualified expression variations.
1322 * include/std/concepts (copyable): Likewise.
1323
98cf2c26
JW
1324 * include/std/type_traits (__is_standard_integer): New helper trait.
1325 * include/std/utility (cmp_equal, cmp_not_equal, cmp_less, cmp_greater)
1326 (cmp_less_equal, cmp_greater_equal, in_range): Define for C++20.
1327 * include/std/version (__cpp_lib_integer_comparison_functions): Define.
1328 * testsuite/20_util/integer_comparisons/1.cc: New test.
1329 * testsuite/20_util/integer_comparisons/2.cc: New test.
1330 * testsuite/20_util/integer_comparisons/equal.cc: New test.
1331 * testsuite/20_util/integer_comparisons/equal_neg.cc: New test.
1332 * testsuite/20_util/integer_comparisons/greater_equal.cc: New test.
1333 * testsuite/20_util/integer_comparisons/greater_equal_neg.cc: New test.
1334 * testsuite/20_util/integer_comparisons/greater_neg.cc: New test.
1335 * testsuite/20_util/integer_comparisons/in_range.cc: New test.
1336 * testsuite/20_util/integer_comparisons/in_range_neg.cc: New test.
1337 * testsuite/20_util/integer_comparisons/less.cc: New test.
1338 * testsuite/20_util/integer_comparisons/less_equal.cc: New test.
1339 * testsuite/20_util/integer_comparisons/less_equal_neg.cc: New test.
1340 * testsuite/20_util/integer_comparisons/less_neg.cc: New test.
1341 * testsuite/20_util/integer_comparisons/not_equal.cc: New test.
1342 * testsuite/20_util/integer_comparisons/not_equal_neg.cc: New test.
1343
93b8cfce
PP
13442020-02-16 Patrick Palka <ppalka@redhat.com>
1345
1346 * include/bits/ranges_algo.h (__lexicographical_compare_fn::operator()):
1347 Move code after an early exit constexpr if to under an else branch.
1348 * include/bits/ranges_algobase.h (__equal_fn::operator()): Likewise.
1349
90b7eb65
PP
13502020-02-15 Patrick Palka <ppalka@redhat.com>
1351
55992626
PP
1352 * include/bits/ranges_algo.h: Adjust whitespace and formatting.
1353 * include/bits/ranges_algobase.h: Likewise.
1354 * include/bits/ranges_uninitialized.h: Likewise.
1355
b40c57bd
PP
1356 * include/bits/ranges_algo.h: (adjacent_find, all_of, any_of,
1357 binary_search, copy_if, count, count_if, equal_range, find, find_end,
1358 find_first_of, find_if, find_if_not, for_each, generate, generate_n,
1359 includes, inplace_merge, is_heap, is_heap_until, is_partitioned,
1360 is_permutation, is_sorted, is_sorted_until, lexicographical_compare,
1361 lower_bound, make_heap, max, max_element, merge, min, min_element,
1362 minmax, minmax_element, mismatch, next_permutation, none_of,
1363 nth_element, partial_sort, partial_sort_copy, partition, partition_copy,
1364 partition_point, pop_heap, prev_permutation, push_heap, remove,
1365 remove_copy, remove_copy_if, remove_if, replace, replace_copy,
1366 replace_copy_if, replace_if, reverse, reverse_copy, rotate, rotate_copy,
1367 search, search_n, set_difference, set_intersection,
1368 set_symmetric_difference, set_union, shuffle, sort, sort_heap,
1369 stable_partition, stable_sort, swap_ranges, transform, unique,
1370 unique_copy, upper_bound): Convert into function objects.
1371 * include/bits/ranges_algobase.h: (equal, copy, move, copy_n, fill_n,
1372 fill, move_backward, copy_backward): Likewise.
1373 * include/bits/ranges_uninitialized.h (uninitialized_default_construct,
1374 uninitialized_default_construct_n, uninitialized_value_construct,
1375 uninitialized_value_construct_n, uninitialized_copy,
1376 uninitialized_copy_n, uninitialized_move, uninitialized_move_n,
1377 uninitialized_fill, uninitialized_fill_n, construct_at, destroy_at,
1378 destroy, destroy_n): Likewise.
1379
90b7eb65
PP
1380 * include/bits/ranges_algo.h (ranges::__find_end): Fold into ...
1381 (ranges::find_end): ... here.
1382 (ranges::__lexicographical_compare): Fold into ...
1383 (ranges::lexicographical_compare): ... here.
1384 * include/bits/ranges_algobase.h (ranges::__equal): Fold into ...
1385 (ranges::equal): ... here.
1386
55b00d14
JW
13872020-02-15 Jonathan Wakely <jwakely@redhat.com>
1388
1389 * include/bits/erase_if.h (__cpp_lib_erase_if): Define to 202002L.
1390 * include/std/deque: Likewise.
1391 * include/std/forward_list: Likewise.
1392 * include/std/list: Likewise.
1393 * include/std/string: Likewise.
1394 * include/std/vector: Likewise.
1395 * include/std/version: Likewise.
1396 * testsuite/23_containers/deque/erasure.cc: Test for new value.
1397 * testsuite/23_containers/forward_list/erasure.cc: Likewise.
1398 * testsuite/23_containers/list/erasure.cc: Likewise.
1399 * testsuite/23_containers/map/erasure.cc: Likewise.
1400 * testsuite/23_containers/set/erasure.cc: Likewise.
1401 * testsuite/23_containers/unordered_map/erasure.cc: Likewise.
1402 * testsuite/23_containers/unordered_set/erasure.cc: Likewise.
1403 * testsuite/23_containers/vector/erasure.cc: Likewise.
1404
5b1d5885
JW
14052020-02-15 Jonathan Wakely <jwakely@redhat.com>
1406
1407 * include/bits/random.h (uniform_random_bit_generator): Require min()
1408 and max() to be constant expressions and min() to be less than max().
1409 * testsuite/26_numerics/random/concept.cc: Check additional cases.
1410 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error lineno.
1411
90fc7b3c
PP
14122020-02-13 Patrick Palka <ppalka@redhat.com>
1413
613c932f
PP
1414 * include/Makefile.am: Add <bits/ranges_uninitialized.h>.
1415 * include/Makefile.in: Regenerate.
1416 * include/bits/ranges_uninitialized.h: New header.
1417 * include/std/memory: Include it.
1418 * testsuite/20_util/specialized_algorithms/destroy/constrained.cc: New
1419 test.
1420 * .../uninitialized_copy/constrained.cc: New test.
1421 * .../uninitialized_default_construct/constrained.cc: New test.
1422 * .../uninitialized_fill/constrained.cc: New test.
1423 * .../uninitialized_move/constrained.cc: New test.
1424 * .../uninitialized_value_construct/constrained.cc: New test.
1425
90fc7b3c
PP
1426 * include/Makefile.am: Add bits/ranges_algobase.h
1427 * include/Makefile.in: Regenerate.
1428 * bits/ranges_algo.h: Include <bits/ranges_algobase.h> and refactor
1429 existing #includes.
1430 (__detail::__is_normal_iterator, __detail::is_reverse_iterator,
1431 __detail::__is_move_iterator, copy_result, move_result,
1432 __equal, equal, copy_result, move_result, move_backward_result,
1433 copy_backward_result, __copy_or_move_backward, __copy_or_move, copy,
1434 move, copy_backward, move_backward, copy_n_result, copy_n, fill_n,
1435 fill): Split out into ...
1436 * bits/range_algobase.h: ... this new header.
1437
99bbab9f
PP
14382020-02-12 Patrick Palka <ppalka@redhat.com>
1439
1440 LWG 3389 and LWG 3390
1441 * include/bits/stl_iterator.h (move_move_iterator): Use std::move when
1442 constructing the move_iterator with __i.
1443 (counted_iterator::counted_iterator): Use std::move when initializing
1444 M_current with __i.
1445 * testsuite/24_iterators/counted_iterator/lwg3389.cc: New test.
1446 * testsuite/24_iterators/move_iterator/lwg3390.cc: New test.
1447
02ce382c
SL
14482020-02-12 Sandra Loosemore <sandra@codesourcery.com>
1449
1450 PR libstdc++/79193
1451 PR libstdc++/88999
1452
1453 * configure: Regenerated.
1454
b32a3f32
FD
14552020-02-12 François Dumont <fdumont@gcc.gnu.org>
1456
1457 * include/bits/hashtable.h
1458 (_Hashtable<>(_Hashtable&&, std::allocator_type&)): Add
1459 missing std namespace qualification to forward call.
1460
dcda050e
JW
14612020-02-09 Jonathan Wakely <jwakely@redhat.com>
1462
38660e87
JW
1463 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Fix
1464 comment.
1465 * testsuite/20_util/function_objects/range.cmp/less.ccL Likewise.
1466
97a7c229
JW
1467 * include/std/ranges: Fix non-ASCII characters in comment.
1468
dcda050e
JW
1469 * include/bits/range_cmp.h (__detail::__eq_builtin_ptr_cmp): Require
1470 equality comparison to be valid and return bool.
1471 (__detail::__less_builtin_ptr_cmp): Likewise for less-than comparison.
1472 * testsuite/20_util/function_objects/range.cmp/equal_to.cc: Check
1473 type with ambiguous conversion to fundamental types.
1474 * testsuite/20_util/function_objects/range.cmp/less.cc: Likewise.
1475
d222d8ec
JW
14762020-02-07 Jonathan Wakely <jwakely@redhat.com>
1477
c8dd2446
JW
1478 * include/bits/iterator_concepts.h (iter_difference_t, iter_value_t):
1479 Use remove_cvref_t.
1480 (readable_traits): Rename to indirectly_readable_traits.
1481 (readable): Rename to indirectly_readable.
1482 (writable): Rename to indirectly_writable.
1483 (__detail::__iter_exchange_move): Do not use remove_reference_t.
1484 (indirectly_swappable): Adjust requires expression parameter types.
1485 expression.
1486 * include/bits/ranges_algo.h (ranges::transform, ranges::replace)
1487 (ranges::replace_if, ranges::generate_n, ranges::generate)
1488 (ranges::remove): Use new name for writable.
1489 * include/bits/stl_iterator.h (__detail::__common_iter_has_arrow):
1490 Use new name for readable.
1491 * include/ext/pointer.h (readable_traits<_Pointer_adapter<P>>): Use
1492 new name for readable_traits.
1493 * testsuite/24_iterators/associated_types/readable.traits.cc: Likewise.
1494 * testsuite/24_iterators/indirect_callable/projected.cc: Adjust for
1495 new definition of indirectly_readable.
1496
d222d8ec
JW
1497 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Change
1498 to take parameters of common_iterator, instead of the common_iterator
1499 type itself. Fix argument for __common_iter_has_arrow constraint.
1500 (iterator_traits<common_iterator<I, S>>::pointer): Adjust.
1501
572992c8
JW
15022020-02-07 Jonathan Wakely <jwakely@redhat.com>
1503
1504 * include/std/ranges (iota_view): Add braces to prevent -Wempty-body
1505 warning.
1506 (basic_istream_view::_Iterator::operator++()): Add missing return.
1507
cba9ef06
PP
15082020-02-07 Patrick Palka <ppalka@redhat.com>
1509
a04f635d
PP
1510 * include/bits/ranges_algo.h: Remove extraneous &&.
1511
b7903d9f
PP
1512 * include/std/ranges (ranges::__detail::__stream_extractable,
1513 ranges::basic_istream_view, ranges::istream_view): Define.
1514 * testsuite/std/ranges/istream_view: New test.
1515
cba9ef06
PP
1516 Implement C++20 range adaptors
1517 * include/std/ranges: Include <bits/refwrap.h> and <tuple>.
1518 (subrange::_S_store_size): Mark as const instead of constexpr to
1519 avoid what seems to be a bug in GCC.
1520 (__detail::__box): Give it defaulted copy and move constructors.
55d4cbcb
PP
1521 (ranges::views::_Single::operator()): Mark constexpr.
1522 (ranges::views::_Iota::operator()): Mark constexpr.
cba9ef06 1523 (__detail::Empty): Define.
55d4cbcb
PP
1524 (ranges::views::__closure::_RangeAdaptor,
1525 ranges::views::__closure::_RangeAdaptorClosure, ref_view, all_view,
1526 ranges::views::all, ranges::__detail::find_if,
1527 ranges::__detail::find_if_not, ranges::__detail::mismatch,
1528 ranges::detail::min, filter_view, ranges::views::filter, transform_view,
1529 ranges::views::transform, take_view, ranges::views::take,
1530 take_while_view, ranges::views::take_while, drop_view,
1531 ranges::views::drop, join_view, ranges::views::join,
cba9ef06 1532 __detail::require_constant, __detail::tiny_range, split_view,
55d4cbcb
PP
1533 ranges::views::split, ranges::views::_Counted, ranges::views::counted,
1534 common_view, ranges::views::common, reverse_view,
1535 ranges::views::reverse,
1536 ranges::views::__detail::__is_reversible_subrange,
1537 ranges::views::__detail::__is_reverse_view, reverse_view,
1538 ranges::views::reverse, __detail::__has_tuple_element, elements_view,
1539 ranges::views::elements, ranges::views::keys, ranges::views::values):
1540 Define.
1541 (views): Alias for ranges::views.
1542 (tuple_size<ranges::subrange<>>, tuple_element<0, ranges::subrange>,
1543 tuple_element<1, ranges::subrange>): New partial specializations.
cba9ef06
PP
1544 * testsuite/std/ranges/adaptors/all.cc: New test.
1545 * testsuite/std/ranges/adaptors/common.cc: Likewise.
1546 * testsuite/std/ranges/adaptors/counted.cc: Likewise.
1547 * testsuite/std/ranges/adaptors/drop.cc: Likewise.
1548 * testsuite/std/ranges/adaptors/drop_while.cc: Likewise.
1549 * testsuite/std/ranges/adaptors/elements.cc: Likewise.
1550 * testsuite/std/ranges/adaptors/filter.cc: Likewise.
1551 * testsuite/std/ranges/adaptors/join.cc: Likewise.
1552 * testsuite/std/ranges/adaptors/reverse.cc: Likewise.
1553 * testsuite/std/ranges/adaptors/split.cc: Likewise.
1554 * testsuite/std/ranges/adaptors/take.cc: Likewise.
1555 * testsuite/std/ranges/adaptors/take_while.cc: Likewise.
1556 * testsuite/std/ranges/adaptors/transform.cc: Likewise.
1557
5713834e
JW
15582020-02-07 Jonathan Wakely <jwakely@redhat.com>
1559
0d57370c
JW
1560 * libsupc++/compare (__cmp_cat::type): Define typedef for underlying
1561 type of enumerations and comparison category types.
1562 (__cmp_cat::_Ord, __cmp_cat::_Ncmp): Add underlying type.
1563 (__cmp_cat::_Ncmp::unordered): Change value to 2.
1564 (partial_ordering::_M_value, weak_ordering::_M_value)
1565 (strong_ordering::_M_value): Change type to __cmp_cat::type.
1566 (partial_ordering::_M_is_ordered): Remove data member.
1567 (partial_ordering): Use second bit of _M_value for unordered. Adjust
1568 comparison operators.
1569 (weak_ordering::operator partial_ordering): Simplify to remove
1570 branches.
1571 (operator<=>(unspecified, weak_ordering)): Likewise.
1572 (strong_ordering::operator partial_ordering): Likewise.
1573 (strong_ordering::operator weak_ordering): Likewise.
1574 (operator<=>(unspecified, strong_ordering)): Likewise.
1575 * testsuite/18_support/comparisons/categories/partialord.cc: New test.
1576 * testsuite/18_support/comparisons/categories/strongord.cc: New test.
1577 * testsuite/18_support/comparisons/categories/weakord.cc: New test.
1578
5713834e
JW
1579 * include/std/ranges (iota_view::_Iterator): Fix typo in name of
1580 __cpp_lib_three_way_comparison macro and use deduced return type for
1581 operator<=>.
1582 * testsuite/std/ranges/iota/iterator.cc: New test.
1583
bc464641
PP
15842020-02-07 Patrick Palka <ppalka@redhat.com>
1585 Jonathan Wakely <jwakely@redhat.com>
1586
1587 Implement C++20 constrained algorithms
1588 * include/Makefile.am: Add new header.
1589 * include/Makefile.in: Regenerate.
1590 * include/std/algorithm: Include <bits/ranges_algo.h>.
1591 * include/bits/ranges_algo.h: New file.
1592 * testsuite/25_algorithms/adjacent_find/constrained.cc: New test.
1593 * testsuite/25_algorithms/all_of/constrained.cc: New test.
1594 * testsuite/25_algorithms/any_of/constrained.cc: New test.
1595 * testsuite/25_algorithms/binary_search/constrained.cc: New test.
1596 * testsuite/25_algorithms/copy/constrained.cc: New test.
1597 * testsuite/25_algorithms/copy_backward/constrained.cc: New test.
1598 * testsuite/25_algorithms/copy_if/constrained.cc: New test.
1599 * testsuite/25_algorithms/copy_n/constrained.cc: New test.
1600 * testsuite/25_algorithms/count/constrained.cc: New test.
1601 * testsuite/25_algorithms/count_if/constrained.cc: New test.
1602 * testsuite/25_algorithms/equal/constrained.cc: New test.
1603 * testsuite/25_algorithms/equal_range/constrained.cc: New test.
1604 * testsuite/25_algorithms/fill/constrained.cc: New test.
1605 * testsuite/25_algorithms/fill_n/constrained.cc: New test.
1606 * testsuite/25_algorithms/find/constrained.cc: New test.
1607 * testsuite/25_algorithms/find_end/constrained.cc: New test.
1608 * testsuite/25_algorithms/find_first_of/constrained.cc: New test.
1609 * testsuite/25_algorithms/find_if/constrained.cc: New test.
1610 * testsuite/25_algorithms/find_if_not/constrained.cc: New test.
1611 * testsuite/25_algorithms/for_each/constrained.cc: New test.
1612 * testsuite/25_algorithms/generate/constrained.cc: New test.
1613 * testsuite/25_algorithms/generate_n/constrained.cc: New test.
1614 * testsuite/25_algorithms/heap/constrained.cc: New test.
1615 * testsuite/25_algorithms/includes/constrained.cc: New test.
1616 * testsuite/25_algorithms/inplace_merge/constrained.cc: New test.
1617 * testsuite/25_algorithms/is_partitioned/constrained.cc: New test.
1618 * testsuite/25_algorithms/is_permutation/constrained.cc: New test.
1619 * testsuite/25_algorithms/is_sorted/constrained.cc: New test.
1620 * testsuite/25_algorithms/is_sorted_until/constrained.cc: New test.
1621 * testsuite/25_algorithms/lexicographical_compare/constrained.cc: New
1622 test.
1623 * testsuite/25_algorithms/lower_bound/constrained.cc: New test.
1624 * testsuite/25_algorithms/max/constrained.cc: New test.
1625 * testsuite/25_algorithms/max_element/constrained.cc: New test.
1626 * testsuite/25_algorithms/merge/constrained.cc: New test.
1627 * testsuite/25_algorithms/min/constrained.cc: New test.
1628 * testsuite/25_algorithms/min_element/constrained.cc: New test.
1629 * testsuite/25_algorithms/minmax/constrained.cc: New test.
1630 * testsuite/25_algorithms/minmax_element/constrained.cc: New test.
1631 * testsuite/25_algorithms/mismatch/constrained.cc: New test.
1632 * testsuite/25_algorithms/move/constrained.cc: New test.
1633 * testsuite/25_algorithms/move_backward/constrained.cc: New test.
1634 * testsuite/25_algorithms/next_permutation/constrained.cc: New test.
1635 * testsuite/25_algorithms/none_of/constrained.cc: New test.
1636 * testsuite/25_algorithms/nth_element/constrained.cc: New test.
1637 * testsuite/25_algorithms/partial_sort/constrained.cc: New test.
1638 * testsuite/25_algorithms/partial_sort_copy/constrained.cc: New test.
1639 * testsuite/25_algorithms/partition/constrained.cc: New test.
1640 * testsuite/25_algorithms/partition_copy/constrained.cc: New test.
1641 * testsuite/25_algorithms/partition_point/constrained.cc: New test.
1642 * testsuite/25_algorithms/prev_permutation/constrained.cc: New test.
1643 * testsuite/25_algorithms/remove/constrained.cc: New test.
1644 * testsuite/25_algorithms/remove_copy/constrained.cc: New test.
1645 * testsuite/25_algorithms/remove_copy_if/constrained.cc: New test.
1646 * testsuite/25_algorithms/remove_if/constrained.cc: New test.
1647 * testsuite/25_algorithms/replace/constrained.cc: New test.
1648 * testsuite/25_algorithms/replace_copy/constrained.cc: New test.
1649 * testsuite/25_algorithms/replace_copy_if/constrained.cc: New test.
1650 * testsuite/25_algorithms/replace_if/constrained.cc: New test.
1651 * testsuite/25_algorithms/reverse/constrained.cc: New test.
1652 * testsuite/25_algorithms/reverse_copy/constrained.cc: New test.
1653 * testsuite/25_algorithms/rotate/constrained.cc: New test.
1654 * testsuite/25_algorithms/rotate_copy/constrained.cc: New test.
1655 * testsuite/25_algorithms/search/constrained.cc: New test.
1656 * testsuite/25_algorithms/search_n/constrained.cc: New test.
1657 * testsuite/25_algorithms/set_difference/constrained.cc: New test.
1658 * testsuite/25_algorithms/set_intersection/constrained.cc: New test.
1659 * testsuite/25_algorithms/set_symmetric_difference/constrained.cc: New
1660 test.
1661 * testsuite/25_algorithms/set_union/constrained.cc: New test.
1662 * testsuite/25_algorithms/shuffle/constrained.cc: New test.
1663 * testsuite/25_algorithms/sort/constrained.cc: New test.
1664 * testsuite/25_algorithms/stable_partition/constrained.cc: New test.
1665 * testsuite/25_algorithms/stable_sort/constrained.cc: New test.
1666 * testsuite/25_algorithms/swap_ranges/constrained.cc: New test.
1667 * testsuite/25_algorithms/transform/constrained.cc: New test.
1668 * testsuite/25_algorithms/unique/constrained.cc: New test.
1669 * testsuite/25_algorithms/unique_copy/constrained.cc: New test.
1670 * testsuite/25_algorithms/upper_bound/constrained.cc: New test.
1671
d1aa7705
JW
16722020-02-06 Jonathan Wakely <jwakely@redhat.com>
1673
bd630df0
JW
1674 * include/bits/stl_iterator.h (__detail::__common_iter_ptr): Fix PR
1675 number in comment. Fix indentation.
1676
d1aa7705
JW
1677 * include/bits/stl_algobase.h (__iter_swap, __iter_swap<true>): Remove
1678 redundant _GLIBCXX20_CONSTEXPR.
1679
26eae9ac
JW
1680 * include/std/ranges (viewable_range): Replace decay_t with
1681 remove_cvref_t (LWG 3375).
1682
269e8130
JW
16832020-02-05 Jonathan Wakely <jwakely@redhat.com>
1684
1685 * include/bits/iterator_concepts.h (iter_reference_t)
1686 (iter_rvalue_reference_t, iter_common_reference_t, indirect_result_t):
1687 Remove workarounds for PR c++/67704.
1688 * testsuite/24_iterators/aliases.cc: New test.
1689
7db12d15
PP
16902020-02-05 Patrick Palka <ppalka@redhat.com>
1691
1692 * include/bits/stl_iterator.h (move_iterator::move_iterator): Move __i
1693 when initializing _M_current.
1694 (move_iterator::base): Split into two overloads differing in
1695 ref-qualifiers as in P1207R4 for C++20.
1696
9962493c
JW
16972020-02-04 Jonathan Wakely <jwakely@redhat.com>
1698
9bc5bea1
JW
1699 * include/std/functional (_GLIBCXX_NOT_FN_CALL_OP): Un-define after
1700 use.
1701
9962493c
JW
1702 PR libstdc++/93562
1703 * include/bits/unique_ptr.h (__uniq_ptr_impl::swap): Define.
1704 (unique_ptr::swap, unique_ptr<T[], D>::swap): Call it.
1705 * testsuite/20_util/unique_ptr/modifiers/93562.cc: New test.
1706
20fa702b
AB
17072020-02-01 Andrew Burgess <andrew.burgess@embecosm.com>
1708
1709 * configure: Regenerate.
1710
6e5a1963
PP
17112020-01-31 Patrick Palka <ppalka@redhat.com>
1712
1713 * testsuite/24_iterators/range_operations/distance.cc: Do not assume
1714 test_range::end() returns the same type as test_range::begin().
1715 * testsuite/24_iterators/range_operations/next.cc: Likewise.
1716 * testsuite/24_iterators/range_operations/prev.cc: Likewise.
1717 * testsuite/util/testsuite_iterators.h (__gnu_test::test_range::end):
1718 Always return a sentinel<I>.
1719
5cd2e126
JW
17202020-01-29 Jonathan Wakely <jwakely@redhat.com>
1721
0a8f4feb
JW
1722 PR libstdc++/92895
1723 * include/std/stop_token (stop_token::stop_possible()): Call new
1724 _M_stop_possible() function.
1725 (stop_token::stop_requested()): Do not use stop_possible().
1726 (stop_token::binary_semaphore): New class, as temporary stand-in for
1727 std::binary_semaphore.
1728 (stop_token::_Stop_cb::_M_callback): Add noexcept to type.
1729 (stop_token::_Stop_cb::_M_destroyed, stop_token::_Stop_cb::_M_done):
1730 New data members for symchronization with stop_callback destruction.
1731 (stop_token::_Stop_cb::_Stop_cb): Make non-template.
1732 (stop_token::_Stop_cb::_M_linked, stop_token::_Stop_cb::_S_execute):
1733 Remove.
1734 (stop_token::_Stop_cb::_M_run): New member function.
1735 (stop_token::_Stop_state::_M_stopped, stop_token::_Stop_state::_M_mtx):
1736 Remove.
1737 (stop_token::_Stop_state::_M_owners): New data member to track
1738 reference count for ownership.
1739 (stop_token::_Stop_state::_M_value): New data member combining a
1740 spinlock, the stop requested flag, and the reference count for
1741 associated stop_source objects.
1742 (stop_token::_Stop_state::_M_requester): New data member for
1743 synchronization with stop_callback destruction.
1744 (stop_token::_Stop_state::_M_stop_possible()): New member function.
1745 (stop_token::_Stop_state::_M_stop_requested()): Inspect relevant bit
1746 of _M_value.
1747 (stop_token::_Stop_state::_M_add_owner)
1748 (stop_token::_Stop_state::_M_release_ownership)
1749 (stop_token::_Stop_state::_M_add_ssrc)
1750 (stop_token::_Stop_state::_M_sub_ssrc): New member functions for
1751 updating reference counts.
1752 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
1753 (stop_token::_Stop_state::_M_lock, stop_token::_Stop_state::_M_unlock)
1754 (stop_token::_Stop_state::_M_try_lock)
1755 (stop_token::_Stop_state::_M_try_lock_and_stop)
1756 (stop_token::_Stop_state::_M_do_try_lock): New member functions for
1757 managing spinlock.
1758 (stop_token::_Stop_state::_M_request_stop): Use atomic operations to
1759 read and update state. Release lock while running callbacks. Use new
1760 data members to synchronize with callback destruction.
1761 (stop_token::_Stop_state::_M_remove_callback): Likewise.
1762 (stop_token::_Stop_state::_M_register_callback): Use atomic operations
1763 to read and update state.
1764 (stop_token::_Stop_state_ref): Handle type to manage _Stop_state,
1765 replacing shared_ptr.
1766 (stop_source::stop_source(const stop_source&)): Update reference count.
1767 (stop_source::operator=(const stop_source&)): Likewise.
1768 (stop_source::~stop_source()): Likewise.
1769 (stop_source::stop_source(stop_source&&)): Define as defaulted.
1770 (stop_source::operator=(stop_source&&)): Establish postcondition on
1771 parameter.
1772 (stop_callback): Enforce preconditions on template parameter. Replace
1773 base class with data member of new _Cb_impl type.
1774 (stop_callback::stop_callback(const stop_token&, Cb&&))
1775 (stop_callback::stop_callback(stop_token&&, Cb&&)): Fix TOCTTOU race.
1776 (stop_callback::_Cb_impl): New type wrapping _Callback member and
1777 defining the _S_execute member function.
1778 * testsuite/30_threads/stop_token/stop_callback/deadlock-mt.cc: New
1779 test.
1780 * testsuite/30_threads/stop_token/stop_callback/deadlock.cc: New test.
1781 * testsuite/30_threads/stop_token/stop_callback/destroy.cc: New test.
1782 * testsuite/30_threads/stop_token/stop_callback/destructible_neg.cc:
1783 New test.
1784 * testsuite/30_threads/stop_token/stop_callback/invocable_neg.cc: New
1785 test.
1786 * testsuite/30_threads/stop_token/stop_callback/invoke.cc: New test.
1787 * testsuite/30_threads/stop_token/stop_source/assign.cc: New test.
1788 * testsuite/30_threads/stop_token/stop_token/stop_possible.cc: New
1789 test.
1790
f214ffb3
JW
1791 * libsupc++/compare (__detail::__3way_builtin_ptr_cmp): Use
1792 three_way_comparable_with.
1793 (__detail::__3way_cmp_with): Remove workaround for fixed bug.
1794 (compare_three_way::operator()): Remove redundant constraint from
1795 requires-clause.
1796 (__detail::_Synth3way::operator()): Use three_way_comparable_with
1797 instead of workaround.
1798 * testsuite/18_support/comparisons/object/93479.cc: Prune extra
1799 output due to simplified constraints on compare_three_way::operator().
1800
83b02010
JW
1801 PR libstdc++/93479
1802 * libsupc++/compare (__3way_builtin_ptr_cmp): Require <=> to be valid.
1803 * testsuite/18_support/comparisons/object/93479.cc: New test.
1804
5cd2e126
JW
1805 * testsuite/std/ranges/access/end.cc: Do not assume test_range::end()
1806 returns the same type as test_range::begin(). Add comments.
1807 * testsuite/std/ranges/access/rbegin.cc: Likewise.
1808 * testsuite/std/ranges/access/rend.cc: Likewise.
1809 * testsuite/std/ranges/range.cc: Do not assume the sentinel for
1810 test_range is the same as its iterator type.
1811 * testsuite/util/testsuite_iterators.h (test_range::sentinel): Add
1812 operator- overloads to satisfy sized_sentinel_for when the iterator
1813 satisfies random_access_iterator.
1814
759812fd
JW
18152020-01-28 Jonathan Wakely <jwakely@redhat.com>
1816
72a9fd20
JW
1817 PR libstdc++/93470
1818 * include/bits/refwrap.h (reference_wrapper::operator()): Restrict
1819 static assertion to object types.
1820
759812fd
JW
1821 PR libstdc++/93325
1822 * acinclude.m4 (GLIBCXX_ENABLE_LIBSTDCXX_TIME): Use AC_SEARCH_LIBS for
1823 clock_gettime instead of explicit glibc version check.
1824 * configure: Regenerate.
1825
a5d81aaa
JW
18262020-01-28 Martin Liska <mliska@suse.cz>
1827
1828 PR libstdc++/93478
1829 * include/std/atomic: Fix typo.
1830 * include/std/optional: Likewise.
1831
18322020-01-27 Andrew Burgess <andrew.burgess@embecosm.com>
1833
1834 * configure: Regenerate.
1835
389cd88c
JW
18362020-01-27 Jonathan Wakely <jwakely@redhat.com>
1837
1838 PR libstdc++/93426
1839 * include/std/span (span): Fix deduction guide.
1840 * testsuite/23_containers/span/deduction.cc: New test.
1841
482eeff5
JW
18422020-01-24 Jonathan Wakely <jwakely@redhat.com>
1843
1844 * libsupc++/compare (__cmp_cat::_Eq): Remove enumeration type.
1845 (__cmp_cat::_Ord::equivalent): Add enumerator.
1846 (__cmp_cat::_Ord::_Less, __cmp_cat::_Ord::_Greater): Rename to less
1847 and greater.
1848 (partial_ordering, weak_ordering, strong_ordering): Remove
1849 constructors taking __cmp_cat::_Eq parameters. Use renamed
1850 enumerators.
1851
e8e66971
MR
18522020-01-24 Maciej W. Rozycki <macro@wdc.com>
1853
1854 * acinclude.m4: Handle `--with-toolexeclibdir='.
1855 * Makefile.in: Regenerate.
1856 * aclocal.m4: Regenerate.
1857 * configure: Regenerate.
1858 * doc/Makefile.in: Regenerate.
1859 * include/Makefile.in: Regenerate.
1860 * libsupc++/Makefile.in: Regenerate.
1861 * po/Makefile.in: Regenerate.
1862 * python/Makefile.in: Regenerate.
1863 * src/Makefile.in: Regenerate.
1864 * src/c++11/Makefile.in: Regenerate.
1865 * src/c++17/Makefile.in: Regenerate.
1866 * src/c++98/Makefile.in: Regenerate.
1867 * src/filesystem/Makefile.in: Regenerate.
1868 * testsuite/Makefile.in: Regenerate.
1869
7a900bce
AO
18702020-01-23 Alexandre Oliva <oliva@adacore.com>
1871
f9e84b31
AO
1872 * crossconfig.m4 (GLIBCXX_CHECK_MATH_DECL): Reject macros.
1873 * configure: Rebuild.
1874
7a900bce
AO
1875 * testsuite/27_io/fpos/mbstate_t/1.cc: Zero-init mbstate_t.
1876
04681fca
JW
18772020-01-23 Jonathan Wakely <jwakely@redhat.com>
1878
1879 PR libstdc++/91947
1880 * include/Makefile.am (${host_builddir}/largefile-config.h): Simplify
1881 rule.
1882 * include/Makefile.in: Regenerate.
1883
c784f162
JW
18842020-01-20 Jonathan Wakely <jwakely@redhat.com>
1885
1886 * doc/xml/faq.xml: Fix grammar.
1887 * doc/xml/manual/appendix_contributing.xml: Improve instructions.
1888 * doc/xml/manual/spine.xml: Update copyright years.
1889 * doc/html/*: Regenerate.
1890
f4d83eba
ER
18912020-01-19 Eric S. Raymond <esr@thyrsus.com>
1892
1893 * doc/xml/faq.xml: Update for SVN -> Git transition.
1894 * doc/xml/manual/appendix_contributing.xml: Likewise.
1895 * doc/xml/manual/status_cxx1998.xml: Likewise.
1896 * doc/xml/manual/status_cxx2011.xml: Likewise.
1897 * doc/xml/manual/status_cxx2014.xml: Likewise.
1898 * doc/xml/manual/status_cxx2017.xml: Likewise.
1899 * doc/xml/manual/status_cxx2020.xml: Likewise.
1900 * doc/xml/manual/status_cxxtr1.xml: Likewise.
1901 * doc/xml/manual/status_cxxtr24733.xml: Likewise.
1902
49789fd0
IS
19032020-01-18 Iain Sandoe <iain@sandoe.co.uk>
1904
1905 * include/Makefile.am: Add coroutine to the std set.
1906 * include/Makefile.in: Regenerated.
1907 * include/std/coroutine: New file.
1908
0ba6a850
JW
19092020-01-17 Jonathan Wakely <jwakely@redhat.com>
1910
1911 PR libstdc++/92376
1912 * include/bits/c++config: Only do PSTL config when the header is
1913 present, to fix freestanding.
1914 * libsupc++/new_opa.cc [!_GLIBCXX_HOSTED]: Declare allocation
1915 functions if they were detected by configure.
1916
98d56ea8
JW
19172020-01-16 Kai-Uwe Eckhardt <kuehro@gmx.de>
1918 Matthew Bauer <mjbauer95@gmail.com>
1919 Jonathan Wakely <jwakely@redhat.com>
1920
1921 PR bootstrap/64271 (partial)
1922 * config/os/bsd/netbsd/ctype_base.h (ctype_base::mask): Change type
1923 to unsigned short.
1924 (ctype_base::alpha, ctype_base::digit, ctype_base::xdigit)
1925 (ctype_base::print, ctype_base::graph, ctype_base::alnum): Sync
1926 definitions with NetBSD upstream.
1927 (ctype_base::blank): Use _CTYPE_BL.
1928 * config/os/bsd/netbsd/ctype_configure_char.cc (_C_ctype_): Remove
1929 Declaration.
1930 (ctype<char>::classic_table): Use _C_ctype_tab_ instead of _C_ctype_.
1931 (ctype<char>::do_toupper, ctype<char>::do_tolower): Cast char
1932 parameters to unsigned char.
1933 * config/os/bsd/netbsd/ctype_inline.h (ctype<char>::is): Likewise.
1934
d9165389
FD
19352020-01-16 François Dumont <fdumont@gcc.gnu.org>
1936
1937 PR libstdc++/91263
1938 * include/bits/hashtable.h (_Hashtable<>): Make _Equality<> friend.
1939 * include/bits/hashtable_policy.h: Include <bits/stl_algo.h>.
1940 (_Equality_base): Remove.
1941 (_Equality<>::_M_equal): Review implementation. Use
1942 std::is_permutation.
1943 * testsuite/23_containers/unordered_multiset/operators/1.cc
1944 (Hash, Equal, test02, test03): New.
1945 * testsuite/23_containers/unordered_set/operators/1.cc
1946 (Hash, Equal, test02, test03): New.
1947
2a0f6c61
JW
19482020-01-15 Jonathan Wakely <jwakely@redhat.com>
1949
1950 PR libstdc++/93267
1951 * include/bits/iterator_concepts.h (__max_diff_type, __max_size_type):
1952 Move here from <bits/range_access.h> and define using __int128 when
1953 available.
1954 (__is_integer_like, __is_signed_integer_like): Move here from
1955 <bits/range_access.h>.
1956 (weakly_incrementable): Use __is_signed_integer_like.
1957 * include/bits/range_access.h (__max_diff_type, __max_size_type)
1958 (__is_integer_like, __is_signed_integer_like): Move to
1959 <bits/iterator_concepts.h>.
1960 (__make_unsigned_like_t): Move here from <ranges>.
1961 * include/std/ranges (__make_unsigned_like_t): Move to
1962 <bits/range_access.h>.
1963 (iota_view): Replace using-directive with using-declarations.
1964 * testsuite/std/ranges/iota/93267.cc: New test.
1965 * testsuite/std/ranges/iota_view.cc: Move to new 'iota' sub-directory.
1966
e4379a93
JW
19672020-01-13 Jonathan Wakely <jwakely@redhat.com>
1968
fe7cc34f
JW
1969 PR libstdc++/93244
1970 * include/bits/fs_path.h (path::generic_string<C,A>)
1971 [_GLIBCXX_FILESYSTEM_IS_WINDOWS]: Convert root-dir to forward-slash.
1972 * testsuite/27_io/filesystem/path/generic/generic_string.cc: Check
1973 root-dir is converted to forward slash in generic pathname.
1974 * testsuite/27_io/filesystem/path/generic/utf.cc: New test.
1975 * testsuite/27_io/filesystem/path/generic/wchar_t.cc: New test.
1976
e4379a93
JW
1977 PR libstdc++/58605
1978 * include/bits/atomic_base.h (__cpp_lib_atomic_value_initialization):
1979 Define.
1980 (__atomic_flag_base, __atomic_base, __atomic_base<_PTp*>)
1981 (__atomic_float): Add default member initializer for C++20.
1982 * include/std/atomic (atomic): Likewise.
1983 (atomic::atomic()): Remove noexcept-specifier on default constructor.
1984 * include/std/version (__cpp_lib_atomic_value_initialization): Define.
1985 * testsuite/29_atomics/atomic/cons/assign_neg.cc: Adjust dg-error line
1986 number.
1987 * testsuite/29_atomics/atomic/cons/copy_neg.cc: Likewise.
1988 * testsuite/29_atomics/atomic/cons/value_init.cc: New test.
1989 * testsuite/29_atomics/atomic_flag/cons/value_init.cc: New test.
1990 * testsuite/29_atomics/atomic_flag/requirements/trivial.cc: Adjust
1991 expected result for is_trivially_default_constructible.
1992 * testsuite/29_atomics/atomic_float/requirements.cc: Likewise.
1993 * testsuite/29_atomics/atomic_float/value_init.cc: New test.
1994 * testsuite/29_atomics/atomic_integral/cons/assign_neg.cc: Likewise.
1995 * testsuite/29_atomics/atomic_integral/cons/copy_neg.cc: Likewise.
1996 * testsuite/29_atomics/atomic_integral/cons/value_init.cc
1997 * testsuite/29_atomics/atomic_integral/requirements/trivial.cc: Adjust
1998 expected results for is_trivially_default_constructible.
1999 * testsuite/util/testsuite_common_types.h (has_trivial_dtor): Add
2000 new test generator.
2001
7918cb93
JW
20022020-01-10 Jonathan Wakely <jwakely@redhat.com>
2003
68be73fc
JW
2004 * testsuite/util/testsuite_iterators.h: Improve comment.
2005
78f02e80
JW
2006 * testsuite/25_algorithms/equal/deque_iterators/1.cc: Don't use C++11
2007 initialization syntax.
2008
7918cb93
JW
2009 PR libstdc++/92285
2010 * include/bits/streambuf_iterator.h (istreambuf_iterator): Make type
2011 of base class independent of __cplusplus value.
2012 [__cplusplus < 201103L] (istreambuf_iterator::reference): Override the
2013 type defined in the base class
2014 * testsuite/24_iterators/istreambuf_iterator/92285.cc: New test.
2015 * testsuite/24_iterators/istreambuf_iterator/requirements/
2016 base_classes.cc: Adjust expected base class for C++98.
2017
acd43917
OH
20182020-01-09 Olivier Hainque <hainque@adacore.com>
2019
2020 * doc/xml/manual/appendix_contributing.xml: Document _C2
2021 as a reserved identifier, by VxWorks.
2022 * include/bits/stl_map.h: Rename _C2 template typenames as _Cmp2.
2023 * include/bits/stl_multimap.h: Likewise.
2024
caa39b2e
JW
20252020-01-09 Jonathan Wakely <jwakely@redhat.com>
2026
1a788638
JW
2027 * include/ext/extptr_allocator.h (_ExtPtr_allocator::operator==)
2028 (_ExtPtr_allocator::operator!=): Add missing const qualifiers.
2029 * include/ext/pointer.h (readable_traits<_Pointer_adapter<S>>): Add
2030 partial specialization to disambiguate the two constrained
2031 specializations.
2032
caa39b2e
JW
2033 * include/experimental/type_traits (experimental::is_pod_v): Disable
2034 -Wdeprecated-declarations warnings around reference to std::is_pod.
2035 * include/std/type_traits (is_pod_v): Likewise.
2036 * testsuite/18_support/max_align_t/requirements/2.cc: Also check
2037 is_standard_layout and is_trivial. Do not check is_pod for C++20.
2038 * testsuite/20_util/is_pod/requirements/explicit_instantiation.cc:
2039 Add -Wno-deprecated for C++20.
2040 * testsuite/20_util/is_pod/requirements/typedefs.cc: Likewise.
2041 * testsuite/20_util/is_pod/value.cc: Likewise.
2042 * testsuite/experimental/type_traits/value.cc: Likewise.
2043
1a6c5064
JTM
20442020-01-09 JeanHeyd "ThePhD" Meneide <phdofthehouse@gmail.com>
2045
2046 * include/bits/c++config (_GLIBCXX20_DEPRECATED): Add new macro.
2047 * include/std/type_traits (is_pod, is_pod_v): Deprecate for C++20.
2048 * testuite/20_util/is_pod/deprecated-2a.cc: New test.
2049
d574c8aa
JW
20502020-01-09 Jonathan Wakely <jwakely@redhat.com>
2051
160e95dc
JW
2052 PR libstdc++/93205
2053 * include/bits/random.h (operator>>): Check stream operation succeeds.
2054 * include/bits/random.tcc (operator<<): Remove redundant __ostream_type
2055 typedefs.
2056 (operator>>): Remove redundant __istream_type typedefs. Check stream
2057 operations succeed.
2058 (__extract_params): New function to fill a vector from a stream.
2059 * testsuite/26_numerics/random/pr60037-neg.cc: Adjust dg-error line.
2060
d574c8aa
JW
2061 PR libstdc++/93208
2062 * config/abi/pre/gnu.ver: Add new exports.
2063 * include/std/memory_resource (memory_resource::~memory_resource()):
2064 Do not define inline.
2065 (monotonic_buffer_resource::~monotonic_buffer_resource()): Likewise.
2066 * src/c++17/memory_resource.cc (memory_resource::~memory_resource()):
2067 Define.
2068 (monotonic_buffer_resource::~monotonic_buffer_resource()): Define.
2069 * testsuite/20_util/monotonic_buffer_resource/93208.cc: New test.
2070
b9c84e95
FD
20712020-01-09 François Dumont <fdumont@gcc.gnu.org>
2072
2073 PR libstdc++/92124
2074 * include/bits/hashtable.h (_Hashtable<>::__alloc_node_gen_t): New
2075 template alias.
2076 (_Hashtable<>::__fwd_value_for): New.
2077 (_Hashtable<>::_M_assign_elements<>): Remove _NodeGenerator template
2078 parameter.
2079 (_Hashtable<>::_M_assign<>): Add _Ht template parameter.
2080 (_Hashtable<>::operator=(const _Hashtable<>&)): Adapt.
2081 (_Hashtable<>::_M_move_assign): Adapt. Replace std::move_if_noexcept
2082 with std::move.
2083 (_Hashtable<>::_Hashtable(const _Hashtable&)): Adapt.
2084 (_Hashtable<>::_Hashtable(const _Hashtable&, const allocator_type&)):
2085 Adapt.
2086 (_Hashtable<>::_Hashtable(_Hashtable&&, const allocator_type&)):
2087 Adapt.
2088 * testsuite/23_containers/unordered_set/92124.cc: New.
2089
fff148b7
JW
20902020-01-08 Jonathan Wakely <jwakely@redhat.com>
2091
2092 PR libstdc++/93201
2093 * src/c++17/fs_ops.cc (do_remove_all): New function implementing more
2094 detailed error reporting for remove_all. Check result of recursive
2095 call before incrementing iterator.
2096 (remove_all(const path&), remove_all(const path&, error_code&)): Use
2097 do_remove_all.
2098 * src/filesystem/ops.cc (remove_all(const path&, error_code&)): Check
2099 result of recursive call before incrementing iterator.
2100 * testsuite/27_io/filesystem/operations/remove_all.cc: Check errors
2101 are reported correctly.
2102 * testsuite/experimental/filesystem/operations/remove_all.cc: Likewise.
2103
9e3c1eb7
TR
21042020-01-07 Thomas Rodgers <trodgers@redhat.com>
2105
2106 * include/std/condition_variable
2107 (condition_variable_any::wait_on): Rename to match current draft
2108 standard.
2109 (condition_variable_any::wait_on_until): Likewise.
2110 (condition_variable_any::wait_on_for): Likewise.
2111 * testsuite/30_threads/condition_variable_any/stop_token/wait_on.cc:
2112 Adjust tests to account for renamed methods.
2113
6af8819b
FD
21142020-01-07 François Dumont <fdumont@gcc.gnu.org>
2115
2116 PR libstdc++/92124
2117 * include/bits/stl_tree.h
2118 (_Rb_tree<>::_M_move_assign(_Rb_tree&, false_type)): Replace
2119 std::move_if_noexcept by std::move.
2120 * testsuite/23_containers/map/92124.cc: New.
2121 * testsuite/23_containers/set/92124.cc: New.
2122
f31a99f7
JW
21232020-01-06 Jonathan Wakely <jwakely@redhat.com>
2124
a4a1f965
JW
2125 * include/std/stop_token (stop_token): Remove operator!= (LWG 3254).
2126 (stop_source): Likewise (LWG 3362).
2127 * testsuite/30_threads/stop_token/stop_source.cc: Test equality
2128 comparisons.
2129
f31a99f7
JW
2130 * include/bits/stl_algobase.h (__is_byte_iter, __min_cmp)
2131 (lexicographical_compare_three_way): Do not depend on
2132 __cpp_lib_concepts.
2133 * include/std/version (__cpp_lib_three_way_comparison): Only define
2134 when __cpp_lib_concepts is defined.
2135 * libsupc++/compare (__cpp_lib_three_way_comparison): Likewise.
2136
b4e70137
JW
21372020-01-03 Jonathan Wakely <jwakely@redhat.com>
2138
2139 * include/bits/stl_algobase.h (lexicographical_compare_three_way):
2140 Only define four-argument overload when __cpp_lib_concepts is defined.
2141
a8497ec6
JDA
21422020-01-01 John David Anglin <danglin@gcc.gnu.org>
2143
2144 * config/abi/post/hppa-linux-gnu/baseline_symbols.txt: Update.
2145
8d9254fc 21462020-01-01 Jakub Jelinek <jakub@redhat.com>
5624e564
JJ
2147
2148 Update copyright years.
b4df5e92 2149\f
8d9254fc 2150Copyright (C) 2020 Free Software Foundation, Inc.
b4df5e92
JW
2151
2152Copying and distribution of this file, with or without modification,
2153are permitted in any medium without royalty provided the copyright
2154notice and this notice are preserved.