| The `inline` attribute was malformed. |
| |
| Erroneous code example: |
| |
| ```compile_fail,E0534 |
| #[inline()] // error: expected one argument |
| pub fn something() {} |
| |
| fn main() {} |
| ``` |
| |
| The parenthesized `inline` attribute requires the parameter to be specified: |
| |
| ``` |
| #[inline(always)] |
| fn something() {} |
| ``` |
| |
| or: |
| |
| ``` |
| #[inline(never)] |
| fn something() {} |
| ``` |
| |
| Alternatively, a paren-less version of the attribute may be used to hint the |
| compiler about inlining opportunity: |
| |
| ``` |
| #[inline] |
| fn something() {} |
| ``` |
| |
| 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 |
