| error: expected a literal (`1u8`, `1.0f32`, `"string"`, etc.) here, found macro call | |
| --> $DIR/macro-in-attribute.rs:4:21 | |
| | | |
| LL | #[deprecated(note = concat!("a", "b"))] | |
| | ^^^^^^^^^^^^^^^^^ macro calls are not allowed here | |
| error: aborting due to 1 previous error | |