| //===----------------------------------------------------------------------===// |
| // |
| // 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. |
| // |
| //===----------------------------------------------------------------------===// |
| |
| // <optional> |
| |
| // class bad_optional_access; |
| // explicit bad_optional_access(const string& what_arg); |
| |
| #include <experimental/optional> |
| #include <string> |
| #include <cstring> |
| #include <cassert> |
| |
| int main() |
| { |
| #if _LIBCPP_STD_VER > 11 |
| using std::experimental::bad_optional_access; |
| |
| const std::string s("message"); |
| bad_optional_access e(s); |
| assert(std::strcmp(e.what(), s.c_str()) == 0); |
| #endif // _LIBCPP_STD_VER > 11 |
| } |