//===----------------------------------------------------------------------===//
//
// 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>
// operator bool()
#include <cassert>
#include <type_traits>
#include <vector>
#include "test_macros.h"
TEST_CONSTEXPR_CXX20 bool test() {
std::vector<bool> vec;
typedef std::vector<bool>::reference Ref;
static_assert(std::is_convertible<Ref, bool>::value, "");
vec.push_back(true);
vec.push_back(false);
Ref true_ref = vec[0];
Ref false_ref = vec[1];
bool b = true_ref;
assert(b);
assert(true_ref);
assert(!false_ref);
return true;
}
int main(int, char**) {
test();
#if TEST_STD_VER > 17
static_assert(test());
#endif
return 0;
}