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 int main(int, char**)
19 {
20     int i = 0;
21     std::reference_wrapper<int> r = std::ref(i);
22     assert(&r.get() == &i);
23 
24   return 0;
25 }
26