libstdc++
debug/vector
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1// Debugging vector implementation -*- C++ -*-
2
3// Copyright (C) 2003-2022 Free Software Foundation, Inc.
4//
5// This file is part of the GNU ISO C++ Library. This library is free
6// software; you can redistribute it and/or modify it under the
7// terms of the GNU General Public License as published by the
8// Free Software Foundation; either version 3, or (at your option)
9// any later version.
10
11// This library is distributed in the hope that it will be useful,
12// but WITHOUT ANY WARRANTY; without even the implied warranty of
13// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
14// GNU General Public License for more details.
15
16// Under Section 7 of GPL version 3, you are granted additional
17// permissions described in the GCC Runtime Library Exception, version
18// 3.1, as published by the Free Software Foundation.
19
20// You should have received a copy of the GNU General Public License and
21// a copy of the GCC Runtime Library Exception along with this program;
22// see the files COPYING3 and COPYING.RUNTIME respectively. If not, see
23// <http://www.gnu.org/licenses/>.
24
25/** @file debug/vector
26 * This file is a GNU debug extension to the Standard C++ Library.
27 */
28
29#ifndef _GLIBCXX_DEBUG_VECTOR
30#define _GLIBCXX_DEBUG_VECTOR 1
31
32#pragma GCC system_header
33
34#include <bits/c++config.h>
35namespace std _GLIBCXX_VISIBILITY(default) { namespace __debug {
36 template<typename _Tp, typename _Allocator> class vector;
37} } // namespace std::__debug
38
39#include <vector>
40#include <debug/safe_sequence.h>
41#include <debug/safe_container.h>
42#include <debug/safe_iterator.h>
43
44namespace __gnu_debug
45{
46 /** @brief Base class for Debug Mode vector.
47 *
48 * Adds information about the guaranteed capacity, which is useful for
49 * detecting code which relies on non-portable implementation details of
50 * the libstdc++ reallocation policy.
51 */
52 template<typename _SafeSequence,
53 typename _BaseSequence>
54 class _Safe_vector
55 {
56 typedef typename _BaseSequence::size_type size_type;
57
58 const _SafeSequence&
59 _M_seq() const { return *static_cast<const _SafeSequence*>(this); }
60
61 protected:
62 _Safe_vector() _GLIBCXX_NOEXCEPT
63 : _M_guaranteed_capacity(0)
64 { _M_update_guaranteed_capacity(); }
65
66 _Safe_vector(const _Safe_vector&) _GLIBCXX_NOEXCEPT
67 : _M_guaranteed_capacity(0)
68 { _M_update_guaranteed_capacity(); }
69
70 _Safe_vector(size_type __n) _GLIBCXX_NOEXCEPT
71 : _M_guaranteed_capacity(__n)
72 { }
73
74 _Safe_vector&
75 operator=(const _Safe_vector&) _GLIBCXX_NOEXCEPT
76 {
77 _M_update_guaranteed_capacity();
78 return *this;
79 }
80
81#if __cplusplus >= 201103L
82 _Safe_vector(_Safe_vector&& __x) noexcept
83 : _Safe_vector()
84 { __x._M_guaranteed_capacity = 0; }
85
86 _Safe_vector&
87 operator=(_Safe_vector&& __x) noexcept
88 {
89 _M_update_guaranteed_capacity();
90 __x._M_guaranteed_capacity = 0;
91 return *this;
92 }
93#endif
94
95 size_type _M_guaranteed_capacity;
96
97 bool
98 _M_requires_reallocation(size_type __elements) const _GLIBCXX_NOEXCEPT
99 { return __elements > _M_seq().capacity(); }
100
101 void
102 _M_update_guaranteed_capacity() _GLIBCXX_NOEXCEPT
103 {
104 if (_M_seq().size() > _M_guaranteed_capacity)
105 _M_guaranteed_capacity = _M_seq().size();
106 }
107 };
108}
109
110namespace std _GLIBCXX_VISIBILITY(default)
111{
112namespace __debug
113{
114 /// Class std::vector with safety/checking/debug instrumentation.
115 template<typename _Tp,
116 typename _Allocator = std::allocator<_Tp> >
117 class vector
118 : public __gnu_debug::_Safe_container<
119 vector<_Tp, _Allocator>, _Allocator, __gnu_debug::_Safe_sequence>,
120 public _GLIBCXX_STD_C::vector<_Tp, _Allocator>,
121 public __gnu_debug::_Safe_vector<
122 vector<_Tp, _Allocator>,
123 _GLIBCXX_STD_C::vector<_Tp, _Allocator> >
124 {
125 typedef _GLIBCXX_STD_C::vector<_Tp, _Allocator> _Base;
126 typedef __gnu_debug::_Safe_container<
127 vector, _Allocator, __gnu_debug::_Safe_sequence> _Safe;
128 typedef __gnu_debug::_Safe_vector<vector, _Base> _Safe_vector;
129
130 typedef typename _Base::iterator _Base_iterator;
131 typedef typename _Base::const_iterator _Base_const_iterator;
132 typedef __gnu_debug::_Equal_to<_Base_const_iterator> _Equal;
133
134 template<typename _ItT, typename _SeqT, typename _CatT>
135 friend class ::__gnu_debug::_Safe_iterator;
136
137 // Reference wrapper for base class. Disambiguates vector(const _Base&)
138 // from copy constructor by requiring a user-defined conversion.
139 // See PR libstdc++/90102.
140 struct _Base_ref
141 {
142 _Base_ref(const _Base& __r) : _M_ref(__r) { }
143
144 const _Base& _M_ref;
145 };
146
147 public:
148 typedef typename _Base::reference reference;
149 typedef typename _Base::const_reference const_reference;
150
151 typedef __gnu_debug::_Safe_iterator<
152 _Base_iterator, vector> iterator;
153 typedef __gnu_debug::_Safe_iterator<
154 _Base_const_iterator, vector> const_iterator;
155
156 typedef typename _Base::size_type size_type;
157 typedef typename _Base::difference_type difference_type;
158
159 typedef _Tp value_type;
160 typedef _Allocator allocator_type;
161 typedef typename _Base::pointer pointer;
162 typedef typename _Base::const_pointer const_pointer;
163 typedef std::reverse_iterator<iterator> reverse_iterator;
164 typedef std::reverse_iterator<const_iterator> const_reverse_iterator;
165
166 // 23.2.4.1 construct/copy/destroy:
167
168#if __cplusplus < 201103L
169 vector() _GLIBCXX_NOEXCEPT
170 : _Base() { }
171#else
172 vector() = default;
173#endif
174
175 explicit
176 vector(const _Allocator& __a) _GLIBCXX_NOEXCEPT
177 : _Base(__a) { }
178
179#if __cplusplus >= 201103L
180 explicit
181 vector(size_type __n, const _Allocator& __a = _Allocator())
182 : _Base(__n, __a), _Safe_vector(__n) { }
183
184 vector(size_type __n, const __type_identity_t<_Tp>& __value,
185 const _Allocator& __a = _Allocator())
186 : _Base(__n, __value, __a) { }
187#else
188 explicit
189 vector(size_type __n, const _Tp& __value = _Tp(),
190 const _Allocator& __a = _Allocator())
191 : _Base(__n, __value, __a) { }
192#endif
193
194#if __cplusplus >= 201103L
195 template<class _InputIterator,
196 typename = std::_RequireInputIter<_InputIterator>>
197#else
198 template<class _InputIterator>
199#endif
200 vector(_InputIterator __first, _InputIterator __last,
201 const _Allocator& __a = _Allocator())
202 : _Base(__gnu_debug::__base(
203 __glibcxx_check_valid_constructor_range(__first, __last)),
204 __gnu_debug::__base(__last), __a) { }
205
206#if __cplusplus < 201103L
207 vector(const vector& __x)
208 : _Base(__x) { }
209
210 ~vector() _GLIBCXX_NOEXCEPT { }
211#else
212 vector(const vector&) = default;
213 vector(vector&&) = default;
214
215 vector(const vector& __x, const __type_identity_t<allocator_type>& __a)
216 : _Base(__x, __a) { }
217
218 vector(vector&& __x, const __type_identity_t<allocator_type>& __a)
219 noexcept(
220 std::is_nothrow_constructible<_Base,
221 _Base, const allocator_type&>::value )
222 : _Safe(std::move(__x), __a),
223 _Base(std::move(__x), __a),
224 _Safe_vector(std::move(__x)) { }
225
226 vector(initializer_list<value_type> __l,
227 const allocator_type& __a = allocator_type())
228 : _Base(__l, __a) { }
229
230 ~vector() = default;
231#endif
232
233 /// Construction from a normal-mode vector
234 vector(_Base_ref __x)
235 : _Base(__x._M_ref) { }
236
237#if __cplusplus >= 201103L
238 vector&
239 operator=(const vector&) = default;
240
241 vector&
242 operator=(vector&&) = default;
243
244 vector&
245 operator=(initializer_list<value_type> __l)
246 {
247 _Base::operator=(__l);
248 this->_M_invalidate_all();
249 this->_M_update_guaranteed_capacity();
250 return *this;
251 }
252#endif
253
254#if __cplusplus >= 201103L
255 template<typename _InputIterator,
256 typename = std::_RequireInputIter<_InputIterator>>
257#else
258 template<typename _InputIterator>
259#endif
260 void
261 assign(_InputIterator __first, _InputIterator __last)
262 {
263 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
264 __glibcxx_check_valid_range2(__first, __last, __dist);
265
266 if (__dist.second >= __gnu_debug::__dp_sign)
267 _Base::assign(__gnu_debug::__unsafe(__first),
268 __gnu_debug::__unsafe(__last));
269 else
270 _Base::assign(__first, __last);
271
272 this->_M_invalidate_all();
273 this->_M_update_guaranteed_capacity();
274 }
275
276 void
277 assign(size_type __n, const _Tp& __u)
278 {
279 _Base::assign(__n, __u);
280 this->_M_invalidate_all();
281 this->_M_update_guaranteed_capacity();
282 }
283
284#if __cplusplus >= 201103L
285 void
286 assign(initializer_list<value_type> __l)
287 {
288 _Base::assign(__l);
289 this->_M_invalidate_all();
290 this->_M_update_guaranteed_capacity();
291 }
292#endif
293
294 using _Base::get_allocator;
295
296 // iterators:
297 _GLIBCXX_NODISCARD
298 iterator
299 begin() _GLIBCXX_NOEXCEPT
300 { return iterator(_Base::begin(), this); }
301
302 _GLIBCXX_NODISCARD
303 const_iterator
304 begin() const _GLIBCXX_NOEXCEPT
305 { return const_iterator(_Base::begin(), this); }
306
307 _GLIBCXX_NODISCARD
308 iterator
309 end() _GLIBCXX_NOEXCEPT
310 { return iterator(_Base::end(), this); }
311
312 _GLIBCXX_NODISCARD
313 const_iterator
314 end() const _GLIBCXX_NOEXCEPT
315 { return const_iterator(_Base::end(), this); }
316
317 _GLIBCXX_NODISCARD
318 reverse_iterator
319 rbegin() _GLIBCXX_NOEXCEPT
320 { return reverse_iterator(end()); }
321
322 _GLIBCXX_NODISCARD
323 const_reverse_iterator
324 rbegin() const _GLIBCXX_NOEXCEPT
325 { return const_reverse_iterator(end()); }
326
327 _GLIBCXX_NODISCARD
328 reverse_iterator
329 rend() _GLIBCXX_NOEXCEPT
330 { return reverse_iterator(begin()); }
331
332 _GLIBCXX_NODISCARD
333 const_reverse_iterator
334 rend() const _GLIBCXX_NOEXCEPT
335 { return const_reverse_iterator(begin()); }
336
337#if __cplusplus >= 201103L
338 [[__nodiscard__]]
339 const_iterator
340 cbegin() const noexcept
341 { return const_iterator(_Base::begin(), this); }
342
343 [[__nodiscard__]]
344 const_iterator
345 cend() const noexcept
346 { return const_iterator(_Base::end(), this); }
347
348 [[__nodiscard__]]
349 const_reverse_iterator
350 crbegin() const noexcept
351 { return const_reverse_iterator(end()); }
352
353 [[__nodiscard__]]
354 const_reverse_iterator
355 crend() const noexcept
356 { return const_reverse_iterator(begin()); }
357#endif
358
359 // 23.2.4.2 capacity:
360 using _Base::size;
361 using _Base::max_size;
362
363#if __cplusplus >= 201103L
364 void
365 resize(size_type __sz)
366 {
367 bool __realloc = this->_M_requires_reallocation(__sz);
368 if (__sz < this->size())
369 this->_M_invalidate_after_nth(__sz);
370 _Base::resize(__sz);
371 if (__realloc)
372 this->_M_invalidate_all();
373 this->_M_update_guaranteed_capacity();
374 }
375
376 void
377 resize(size_type __sz, const _Tp& __c)
378 {
379 bool __realloc = this->_M_requires_reallocation(__sz);
380 if (__sz < this->size())
381 this->_M_invalidate_after_nth(__sz);
382 _Base::resize(__sz, __c);
383 if (__realloc)
384 this->_M_invalidate_all();
385 this->_M_update_guaranteed_capacity();
386 }
387#else
388 void
389 resize(size_type __sz, _Tp __c = _Tp())
390 {
391 bool __realloc = this->_M_requires_reallocation(__sz);
392 if (__sz < this->size())
393 this->_M_invalidate_after_nth(__sz);
394 _Base::resize(__sz, __c);
395 if (__realloc)
396 this->_M_invalidate_all();
397 this->_M_update_guaranteed_capacity();
398 }
399#endif
400
401#if __cplusplus >= 201103L
402 void
403 shrink_to_fit()
404 {
405 if (_Base::_M_shrink_to_fit())
406 {
407 this->_M_guaranteed_capacity = _Base::capacity();
408 this->_M_invalidate_all();
409 }
410 }
411#endif
412
413 _GLIBCXX_NODISCARD
414 size_type
415 capacity() const _GLIBCXX_NOEXCEPT
416 {
417#ifdef _GLIBCXX_DEBUG_PEDANTIC
418 return this->_M_guaranteed_capacity;
419#else
420 return _Base::capacity();
421#endif
422 }
423
424 using _Base::empty;
425
426 void
427 reserve(size_type __n)
428 {
429 bool __realloc = this->_M_requires_reallocation(__n);
430 _Base::reserve(__n);
431 if (__n > this->_M_guaranteed_capacity)
432 this->_M_guaranteed_capacity = __n;
433 if (__realloc)
434 this->_M_invalidate_all();
435 }
436
437 // element access:
438 _GLIBCXX_NODISCARD
439 reference
440 operator[](size_type __n) _GLIBCXX_NOEXCEPT
441 {
442 __glibcxx_check_subscript(__n);
443 return _Base::operator[](__n);
444 }
445
446 _GLIBCXX_NODISCARD
447 const_reference
448 operator[](size_type __n) const _GLIBCXX_NOEXCEPT
449 {
450 __glibcxx_check_subscript(__n);
451 return _Base::operator[](__n);
452 }
453
454 using _Base::at;
455
456 _GLIBCXX_NODISCARD
457 reference
458 front() _GLIBCXX_NOEXCEPT
459 {
460 __glibcxx_check_nonempty();
461 return _Base::front();
462 }
463
464 _GLIBCXX_NODISCARD
465 const_reference
466 front() const _GLIBCXX_NOEXCEPT
467 {
468 __glibcxx_check_nonempty();
469 return _Base::front();
470 }
471
472 _GLIBCXX_NODISCARD
473 reference
474 back() _GLIBCXX_NOEXCEPT
475 {
476 __glibcxx_check_nonempty();
477 return _Base::back();
478 }
479
480 _GLIBCXX_NODISCARD
481 const_reference
482 back() const _GLIBCXX_NOEXCEPT
483 {
484 __glibcxx_check_nonempty();
485 return _Base::back();
486 }
487
488 // _GLIBCXX_RESOLVE_LIB_DEFECTS
489 // DR 464. Suggestion for new member functions in standard containers.
490 using _Base::data;
491
492 // 23.2.4.3 modifiers:
493 void
494 push_back(const _Tp& __x)
495 {
496 bool __realloc = this->_M_requires_reallocation(this->size() + 1);
497 _Base::push_back(__x);
498 if (__realloc)
499 this->_M_invalidate_all();
500 this->_M_update_guaranteed_capacity();
501 }
502
503#if __cplusplus >= 201103L
504 template<typename _Up = _Tp>
505 typename __gnu_cxx::__enable_if<!std::__are_same<_Up, bool>::__value,
506 void>::__type
507 push_back(_Tp&& __x)
508 { emplace_back(std::move(__x)); }
509
510 template<typename... _Args>
511#if __cplusplus > 201402L
512 reference
513#else
514 void
515#endif
516 emplace_back(_Args&&... __args)
517 {
518 bool __realloc = this->_M_requires_reallocation(this->size() + 1);
519 _Base::emplace_back(std::forward<_Args>(__args)...);
520 if (__realloc)
521 this->_M_invalidate_all();
522 this->_M_update_guaranteed_capacity();
523#if __cplusplus > 201402L
524 return back();
525#endif
526 }
527#endif
528
529 void
530 pop_back() _GLIBCXX_NOEXCEPT
531 {
532 __glibcxx_check_nonempty();
533 this->_M_invalidate_if(_Equal(--_Base::end()));
534 _Base::pop_back();
535 }
536
537#if __cplusplus >= 201103L
538 template<typename... _Args>
539 iterator
540 emplace(const_iterator __position, _Args&&... __args)
541 {
542 __glibcxx_check_insert(__position);
543 bool __realloc = this->_M_requires_reallocation(this->size() + 1);
544 difference_type __offset = __position.base() - _Base::cbegin();
545 _Base_iterator __res = _Base::emplace(__position.base(),
546 std::forward<_Args>(__args)...);
547 if (__realloc)
548 this->_M_invalidate_all();
549 else
550 this->_M_invalidate_after_nth(__offset);
551 this->_M_update_guaranteed_capacity();
552 return { __res, this };
553 }
554#endif
555
556 iterator
557#if __cplusplus >= 201103L
558 insert(const_iterator __position, const _Tp& __x)
559#else
560 insert(iterator __position, const _Tp& __x)
561#endif
562 {
563 __glibcxx_check_insert(__position);
564 bool __realloc = this->_M_requires_reallocation(this->size() + 1);
565 difference_type __offset = __position.base() - _Base::begin();
566 _Base_iterator __res = _Base::insert(__position.base(), __x);
567 if (__realloc)
568 this->_M_invalidate_all();
569 else
570 this->_M_invalidate_after_nth(__offset);
571 this->_M_update_guaranteed_capacity();
572 return iterator(__res, this);
573 }
574
575#if __cplusplus >= 201103L
576 template<typename _Up = _Tp>
577 typename __gnu_cxx::__enable_if<!std::__are_same<_Up, bool>::__value,
578 iterator>::__type
579 insert(const_iterator __position, _Tp&& __x)
580 { return emplace(__position, std::move(__x)); }
581
582 iterator
583 insert(const_iterator __position, initializer_list<value_type> __l)
584 { return this->insert(__position, __l.begin(), __l.end()); }
585#endif
586
587#if __cplusplus >= 201103L
588 iterator
589 insert(const_iterator __position, size_type __n, const _Tp& __x)
590 {
591 __glibcxx_check_insert(__position);
592 bool __realloc = this->_M_requires_reallocation(this->size() + __n);
593 difference_type __offset = __position.base() - _Base::cbegin();
594 _Base_iterator __res = _Base::insert(__position.base(), __n, __x);
595 if (__realloc)
596 this->_M_invalidate_all();
597 else
598 this->_M_invalidate_after_nth(__offset);
599 this->_M_update_guaranteed_capacity();
600 return { __res, this };
601 }
602#else
603 void
604 insert(iterator __position, size_type __n, const _Tp& __x)
605 {
606 __glibcxx_check_insert(__position);
607 bool __realloc = this->_M_requires_reallocation(this->size() + __n);
608 difference_type __offset = __position.base() - _Base::begin();
609 _Base::insert(__position.base(), __n, __x);
610 if (__realloc)
611 this->_M_invalidate_all();
612 else
613 this->_M_invalidate_after_nth(__offset);
614 this->_M_update_guaranteed_capacity();
615 }
616#endif
617
618#if __cplusplus >= 201103L
619 template<class _InputIterator,
620 typename = std::_RequireInputIter<_InputIterator>>
621 iterator
622 insert(const_iterator __position,
623 _InputIterator __first, _InputIterator __last)
624 {
625 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
626 __glibcxx_check_insert_range(__position, __first, __last, __dist);
627
628 /* Hard to guess if invalidation will occur, because __last
629 - __first can't be calculated in all cases, so we just
630 punt here by checking if it did occur. */
631 _Base_iterator __old_begin = _M_base().begin();
632 difference_type __offset = __position.base() - _Base::cbegin();
633 _Base_iterator __res;
634 if (__dist.second >= __gnu_debug::__dp_sign)
635 __res = _Base::insert(__position.base(),
636 __gnu_debug::__unsafe(__first),
637 __gnu_debug::__unsafe(__last));
638 else
639 __res = _Base::insert(__position.base(), __first, __last);
640
641 if (_M_base().begin() != __old_begin)
642 this->_M_invalidate_all();
643 else
644 this->_M_invalidate_after_nth(__offset);
645 this->_M_update_guaranteed_capacity();
646 return { __res, this };
647 }
648#else
649 template<class _InputIterator>
650 void
651 insert(iterator __position,
652 _InputIterator __first, _InputIterator __last)
653 {
654 typename __gnu_debug::_Distance_traits<_InputIterator>::__type __dist;
655 __glibcxx_check_insert_range(__position, __first, __last, __dist);
656
657 /* Hard to guess if invalidation will occur, because __last
658 - __first can't be calculated in all cases, so we just
659 punt here by checking if it did occur. */
660 _Base_iterator __old_begin = _M_base().begin();
661 difference_type __offset = __position.base() - _Base::begin();
662 if (__dist.second >= __gnu_debug::__dp_sign)
663 _Base::insert(__position.base(), __gnu_debug::__unsafe(__first),
664 __gnu_debug::__unsafe(__last));
665 else
666 _Base::insert(__position.base(), __first, __last);
667
668 if (_M_base().begin() != __old_begin)
669 this->_M_invalidate_all();
670 else
671 this->_M_invalidate_after_nth(__offset);
672 this->_M_update_guaranteed_capacity();
673 }
674#endif
675
676 iterator
677#if __cplusplus >= 201103L
678 erase(const_iterator __position)
679#else
680 erase(iterator __position)
681#endif
682 {
683 __glibcxx_check_erase(__position);
684 difference_type __offset = __position.base() - _Base::begin();
685 _Base_iterator __res = _Base::erase(__position.base());
686 this->_M_invalidate_after_nth(__offset);
687 return iterator(__res, this);
688 }
689
690 iterator
691#if __cplusplus >= 201103L
692 erase(const_iterator __first, const_iterator __last)
693#else
694 erase(iterator __first, iterator __last)
695#endif
696 {
697 // _GLIBCXX_RESOLVE_LIB_DEFECTS
698 // 151. can't currently clear() empty container
699 __glibcxx_check_erase_range(__first, __last);
700
701 if (__first.base() != __last.base())
702 {
703 difference_type __offset = __first.base() - _Base::begin();
704 _Base_iterator __res = _Base::erase(__first.base(),
705 __last.base());
706 this->_M_invalidate_after_nth(__offset);
707 return iterator(__res, this);
708 }
709 else
710#if __cplusplus >= 201103L
711 return { _Base::begin() + (__first.base() - _Base::cbegin()), this };
712#else
713 return __first;
714#endif
715 }
716
717 void
718 swap(vector& __x)
719 _GLIBCXX_NOEXCEPT_IF( noexcept(declval<_Base&>().swap(__x)) )
720 {
721 _Safe::_M_swap(__x);
722 _Base::swap(__x);
723 std::swap(this->_M_guaranteed_capacity, __x._M_guaranteed_capacity);
724 }
725
726 void
727 clear() _GLIBCXX_NOEXCEPT
728 {
729 _Base::clear();
730 this->_M_invalidate_all();
731 }
732
733 _Base&
734 _M_base() _GLIBCXX_NOEXCEPT { return *this; }
735
736 const _Base&
737 _M_base() const _GLIBCXX_NOEXCEPT { return *this; }
738
739 private:
740 void
741 _M_invalidate_after_nth(difference_type __n) _GLIBCXX_NOEXCEPT
742 {
743 typedef __gnu_debug::_After_nth_from<_Base_const_iterator> _After_nth;
744 this->_M_invalidate_if(_After_nth(__n, _Base::begin()));
745 }
746 };
747
748 template<typename _Tp, typename _Alloc>
749 inline bool
750 operator==(const vector<_Tp, _Alloc>& __lhs,
751 const vector<_Tp, _Alloc>& __rhs)
752 { return __lhs._M_base() == __rhs._M_base(); }
753
754#if __cpp_lib_three_way_comparison
755 template<typename _Tp, typename _Alloc>
756 constexpr __detail::__synth3way_t<_Tp>
757 operator<=>(const vector<_Tp, _Alloc>& __x, const vector<_Tp, _Alloc>& __y)
758 { return __x._M_base() <=> __y._M_base(); }
759#else
760 template<typename _Tp, typename _Alloc>
761 inline bool
762 operator!=(const vector<_Tp, _Alloc>& __lhs,
763 const vector<_Tp, _Alloc>& __rhs)
764 { return __lhs._M_base() != __rhs._M_base(); }
765
766 template<typename _Tp, typename _Alloc>
767 inline bool
768 operator<(const vector<_Tp, _Alloc>& __lhs,
769 const vector<_Tp, _Alloc>& __rhs)
770 { return __lhs._M_base() < __rhs._M_base(); }
771
772 template<typename _Tp, typename _Alloc>
773 inline bool
774 operator<=(const vector<_Tp, _Alloc>& __lhs,
775 const vector<_Tp, _Alloc>& __rhs)
776 { return __lhs._M_base() <= __rhs._M_base(); }
777
778 template<typename _Tp, typename _Alloc>
779 inline bool
780 operator>=(const vector<_Tp, _Alloc>& __lhs,
781 const vector<_Tp, _Alloc>& __rhs)
782 { return __lhs._M_base() >= __rhs._M_base(); }
783
784 template<typename _Tp, typename _Alloc>
785 inline bool
786 operator>(const vector<_Tp, _Alloc>& __lhs,
787 const vector<_Tp, _Alloc>& __rhs)
788 { return __lhs._M_base() > __rhs._M_base(); }
789#endif // three-way comparison
790
791 template<typename _Tp, typename _Alloc>
792 inline void
793 swap(vector<_Tp, _Alloc>& __lhs, vector<_Tp, _Alloc>& __rhs)
794 _GLIBCXX_NOEXCEPT_IF(noexcept(__lhs.swap(__rhs)))
795 { __lhs.swap(__rhs); }
796
797#if __cpp_deduction_guides >= 201606
798 template<typename _InputIterator, typename _ValT
799 = typename iterator_traits<_InputIterator>::value_type,
800 typename _Allocator = allocator<_ValT>,
801 typename = _RequireInputIter<_InputIterator>,
802 typename = _RequireAllocator<_Allocator>>
803 vector(_InputIterator, _InputIterator, _Allocator = _Allocator())
804 -> vector<_ValT, _Allocator>;
805
806 template<typename _Tp, typename _Allocator = allocator<_Tp>,
807 typename = _RequireAllocator<_Allocator>>
808 vector(size_t, _Tp, _Allocator = _Allocator())
809 -> vector<_Tp, _Allocator>;
810#endif
811
812} // namespace __debug
813
814_GLIBCXX_BEGIN_NAMESPACE_VERSION
815
816#if __cplusplus >= 201103L
817 // DR 1182.
818 /// std::hash specialization for vector<bool>.
819 template<typename _Alloc>
820 struct hash<__debug::vector<bool, _Alloc>>
821 : public __hash_base<size_t, __debug::vector<bool, _Alloc>>
822 {
823 size_t
824 operator()(const __debug::vector<bool, _Alloc>& __b) const noexcept
825 { return std::hash<_GLIBCXX_STD_C::vector<bool, _Alloc>>()(__b); }
826 };
827#endif
828
829#if __cplusplus >= 201703L
830 namespace __detail::__variant
831 {
832 template<typename> struct _Never_valueless_alt; // see <variant>
833
834 // Provide the strong exception-safety guarantee when emplacing a
835 // vector into a variant, but only if move assignment cannot throw.
836 template<typename _Tp, typename _Alloc>
837 struct _Never_valueless_alt<__debug::vector<_Tp, _Alloc>>
838 : std::is_nothrow_move_assignable<__debug::vector<_Tp, _Alloc>>
839 { };
840 } // namespace __detail::__variant
841#endif // C++17
842
843_GLIBCXX_END_NAMESPACE_VERSION
844} // namespace std
845
846namespace __gnu_debug
847{
848 template<typename _Tp, typename _Alloc>
849 struct _Is_contiguous_sequence<std::__debug::vector<_Tp, _Alloc> >
850 : std::__true_type
851 { };
852
853 template<typename _Alloc>
854 struct _Is_contiguous_sequence<std::__debug::vector<bool, _Alloc> >
855 : std::__false_type
856 { };
857}
858
859#endif