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//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// <vector>
// reference(const reference&)
#include <cassert>
#include <vector>
#include "test_macros.h"
TEST_CONSTEXPR_CXX20 bool test() {
std::vector<bool> vec;
typedef std::vector<bool>::reference Ref;
vec.push_back(true);
Ref ref = vec[0];
Ref ref2 = ref;
assert(ref == ref2 && ref2);
ref.flip();
assert(ref == ref2 && !ref2);
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}
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