1//===----------------------------------------------------------------------===//
2//
3// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
4// See https://llvm.org/LICENSE.txt for license information.
5// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
6//
7//===----------------------------------------------------------------------===//
8
9// <deque>
10
11// void pop_back()
12
13// Erasing items from the beginning or the end of a deque shall not invalidate iterators
14// to items that were not erased.
15
16#include "asan_testing.h"
17#include <deque>
18#include <cassert>
19
20#include "test_macros.h"
21
22template <typename C>
23void test(C c)
24{
25 typename C::iterator it1 = c.begin();
26 typename C::iterator it2 = c.end() - 2;
27
28 c.pop_back();
29
30 typename C::iterator it3 = c.begin();
31 typename C::iterator it4 = c.end() - 1;
32 assert( it1 == it3);
33 assert( *it1 == *it3);
34 assert(&*it1 == &*it3);
35 assert( it2 == it4);
36 assert( *it2 == *it4);
37 assert(&*it2 == &*it4);
38 LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(c));
39}
40
41int main(int, char**)
42{
43 std::deque<int> queue;
44 for (int i = 0; i < 4098; ++i)
45 queue.push_back(i);
46
47 while (queue.size() > 1)
48 {
49 test(queue);
50 queue.pop_back();
51 LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(queue));
52 }
53
54 return 0;
55}
56

source code of libcxx/test/std/containers/sequences/deque/deque.modifiers/pop_back.invalidation.pass.cpp