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 // #include <initializer_list> 13 14 #include <experimental/optional> 15 main()16int main() 17 { 18 #if _LIBCPP_STD_VER > 11 19 using std::experimental::optional; 20 21 std::initializer_list<int> list; 22 #endif // _LIBCPP_STD_VER > 11 23 } 24