1 //===----------------------------------------------------------------------===//
2 //
3 //                     The LLVM Compiler Infrastructure
4 //
5 // This file is dual licensed under the MIT and the University of Illinois Open
6 // Source Licenses. See LICENSE.TXT for details.
7 //
8 //===----------------------------------------------------------------------===//
9 
10 // <memory>
11 
12 // template <ObjectType T> T* addressof(T& r);
13 
14 #include <memory>
15 #include <cassert>
16 
17 struct A
18 {
operator &A19     void operator&() const {}
20 };
21 
22 struct nothing {
operator char&nothing23     operator char&()
24     {
25         static char c;
26         return c;
27     }
28 };
29 
main()30 int main()
31 {
32     {
33     int i;
34     double d;
35     assert(std::addressof(i) == &i);
36     assert(std::addressof(d) == &d);
37     A* tp = new A;
38     const A* ctp = tp;
39     assert(std::addressof(*tp) == tp);
40     assert(std::addressof(*ctp) == tp);
41     delete tp;
42     }
43     {
44     union
45     {
46         nothing n;
47         int i;
48     };
49     assert(std::addressof(n) == (void*)std::addressof(i));
50     }
51 }
52