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_front()
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 typename C::iterator it1 = c.begin() + 1;
25 typename C::iterator it2 = c.end() - 1;
26
27 c.pop_front();
28
29 typename C::iterator it3 = c.begin();
30 typename C::iterator it4 = c.end() - 1;
31 assert(it1 == it3);
32 assert(*it1 == *it3);
33 assert(&*it1 == &*it3);
34 assert(it2 == it4);
35 assert(*it2 == *it4);
36 assert(&*it2 == &*it4);
37}
38
39int main(int, char**) {
40 std::deque<int> queue;
41 for (int i = 0; i < 4098; ++i)
42 queue.push_back(i);
43
44 while (queue.size() > 1) {
45 test(queue);
46 queue.pop_back();
47 LIBCPP_ASSERT(is_double_ended_contiguous_container_asan_correct(queue));
48 }
49
50 return 0;
51}
52

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