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 shall be an object type and shall satisfy the requirements of Destructible
13
14#include <experimental/optional>
15
16#if _LIBCPP_STD_VER > 11
17
18using std::experimental::optional;
19
20struct X
21{
22private:
23    ~X() {}
24};
25
26#endif  // _LIBCPP_STD_VER > 11
27
28int main()
29{
30#if _LIBCPP_STD_VER > 11
31    optional<X> opt;
32#else
33#error
34#endif  // _LIBCPP_STD_VER > 11
35}
36