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 ~X() noexcept(false) {} 23 }; 24 25 #endif // _LIBCPP_STD_VER > 11 26 27 int main() 28 { 29 #if _LIBCPP_STD_VER > 11 30 optional<X> opt; 31 #else 32 #error 33 #endif // _LIBCPP_STD_VER > 11 34 } 35
