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// reference(const reference&)
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 Ref ref = vec[0];
23 Ref ref2 = ref;
24 assert(ref == ref2 && ref2);
25 ref.flip();
26 assert(ref == ref2 && !ref2);
27
28 return true;
29}
30
31int main(int, char**) {
32 test();
33#if TEST_STD_VER > 17
34 static_assert(test());
35#endif
36
37 return 0;
38}
39

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