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// <vector>
10
11// flip()
12
13#include <cassert>
14#include <vector>
15
16#include "test_macros.h"
17
18TEST_CONSTEXPR_CXX20 bool test() {
19 std::vector<bool> vec;
20 typedef std::vector<bool>::reference Ref;
21 vec.push_back(true);
22 vec.push_back(false);
23 Ref ref = vec[0];
24 assert(vec[0]);
25 assert(!vec[1]);
26 ref.flip();
27 assert(!vec[0]);
28 assert(!vec[1]);
29 ref.flip();
30 assert(vec[0]);
31 assert(!vec[1]);
32
33 return true;
34}
35
36int main(int, char**) {
37 test();
38#if TEST_STD_VER > 17
39 static_assert(test());
40#endif
41
42 return 0;
43}
44

source code of libcxx/test/std/containers/sequences/vector.bool/reference/flip.pass.cpp