| //===----------------------------------------------------------------------===// |
| // |
| // 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, c++14 |
| // <optional> |
| |
| // struct nullopt_t{see below}; |
| |
| #include <optional> |
| |
| using std::optional; |
| using std::nullopt_t; |
| |
| int main() |
| { |
| // I roughly interpret LWG2736 as "it shall not be possible to copy-list-initialize nullopt_t with an |
| // empty braced-init-list." |
| nullopt_t foo = {}; |
| } |