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 
18 using std::experimental::optional;
19 
20 struct X
21 {
22 private:
~XX23     ~X() {}
24 };
25 
26 #endif  // _LIBCPP_STD_VER > 11
27 
main()28 int main()
29 {
30 #if _LIBCPP_STD_VER > 11
31     optional<X> opt;
32 #else
33 #error
34 #endif  // _LIBCPP_STD_VER > 11
35 }
36