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 // <memory>
10 
11 // template <ObjectType T> T* addressof(T& r);
12 
13 #include <memory>
14 #include <cassert>
15 
16 #include "test_macros.h"
17 
18 struct A
19 {
operator &A20     void operator&() const {}
21 };
22 
23 struct nothing {
operator char&nothing24     operator char&()
25     {
26         static char c;
27         return c;
28     }
29 };
30 
main(int,char **)31 int main(int, char**)
32 {
33     {
34     int i;
35     double d;
36     assert(std::addressof(i) == &i);
37     assert(std::addressof(d) == &d);
38     A* tp = new A;
39     const A* ctp = tp;
40     assert(std::addressof(*tp) == tp);
41     assert(std::addressof(*ctp) == tp);
42     delete tp;
43     }
44     {
45     union
46     {
47         nothing n;
48         int i;
49     };
50     assert(std::addressof(n) == (void*)std::addressof(i));
51     }
52 
53   return 0;
54 }
55