| An unknown argument was given to the `inline` attribute. |
| |
| Erroneous code example: |
| |
| ```compile_fail,E0535 |
| #[inline(unknown)] // error: invalid argument |
| pub fn something() {} |
| |
| fn main() {} |
| ``` |
| |
| The `inline` attribute only supports two arguments: |
| |
| * always |
| * never |
| |
| All other arguments given to the `inline` attribute will return this error. |
| Example: |
| |
| ``` |
| #[inline(never)] // ok! |
| pub fn something() {} |
| |
| fn main() {} |
| ``` |
| |
| For more information see the [`inline` Attribute][inline-attribute] section |
| of the Reference. |
| |
| [inline-attribute]: https://doc.rust-lang.org/reference/attributes/codegen.html#the-inline-attribute |
