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 // <functional> 10 11 // reference_wrapper 12 13 // template <ObjectType T> reference_wrapper<T> ref(T& t); 14 15 #include <functional> 16 #include <cassert> 17 18 #include "test_macros.h" 19 test()20TEST_CONSTEXPR_CXX20 bool test() 21 { 22 int i = 0; 23 std::reference_wrapper<int> r = std::ref(i); 24 assert(&r.get() == &i); 25 return true; 26 } 27 main(int,char **)28int main(int, char**) 29 { 30 test(); 31 #if TEST_STD_VER > 17 32 static_assert(test()); 33 #endif 34 35 return 0; 36 } 37