| A non-ASCII identifier was used in an invalid context. | |
| Erroneous code examples: | |
| ```compile_fail,E0754 | |
| mod řųśť; // error! | |
| #[no_mangle] | |
| fn řųśť() {} // error! | |
| fn main() {} | |
| ``` | |
| Non-ASCII can be used as module names if it is inlined or if a `#[path]` | |
| attribute is specified. For example: | |
| ``` | |
| mod řųśť { // ok! | |
| const IS_GREAT: bool = true; | |
| } | |
| fn main() {} | |
| ``` |