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 test()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 main(int,char **)36int main(int, char**) { 37 test(); 38 #if TEST_STD_VER > 17 39 static_assert(test()); 40 #endif 41 42 return 0; 43 } 44