//===----------------------------------------------------------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// // UNSUPPORTED: c++98, c++03, c++11 // // T shall be an object type and shall satisfy the requirements of Destructible #include int main() { using std::experimental::optional; optional opt; }