|  | #![feature(coverage_attribute)] | 
|  | //@ edition: 2021 | 
|  | //@ reference: attributes.coverage.syntax | 
|  |  | 
|  | // Check that yes/no in `#[coverage(yes)]` and `#[coverage(no)]` must be bare | 
|  | // words, not part of a more complicated substructure. | 
|  |  | 
|  | #[coverage(yes(milord))] //~ ERROR malformed `coverage` attribute input | 
|  | fn yes_list() {} | 
|  |  | 
|  | #[coverage(no(milord))] //~ ERROR malformed `coverage` attribute input | 
|  | fn no_list() {} | 
|  |  | 
|  | #[coverage(yes = "milord")] //~ ERROR malformed `coverage` attribute input | 
|  | fn yes_key() {} | 
|  |  | 
|  | #[coverage(no = "milord")] //~ ERROR malformed `coverage` attribute input | 
|  | fn no_key() {} | 
|  |  | 
|  | fn main() {} |