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// <optional>
11
12// T* optional<T>::operator->();
13
14#ifdef _LIBCPP_DEBUG
15#define _LIBCPP_ASSERT(x, m) ((x) ? (void)0 : std::exit(0))
16#endif
17
18#include <experimental/optional>
19#include <type_traits>
20#include <cassert>
21
22#if _LIBCPP_STD_VER > 11
23
24using std::experimental::optional;
25
26struct X
27{
28    int test() const {return 2;}
29    int test() {return 3;}
30};
31
32#endif  // _LIBCPP_STD_VER > 11
33
34int main()
35{
36#if _LIBCPP_STD_VER > 11
37    {
38        optional<X> opt(X{});
39        assert(opt->test() == 3);
40    }
41#ifdef _LIBCPP_DEBUG
42    {
43        optional<X> opt;
44        assert(opt->test() == 3);
45        assert(false);
46    }
47#endif  // _LIBCPP_DEBUG
48#endif  // _LIBCPP_STD_VER > 11
49}
50