error[E0517]: attribute should be applied to a struct, enum, function, associated function, or union --> $DIR/invalid-repr.rs:1:8 | LL | #[repr(align(16))] | ^^^^^^^^^ LL | LL | pub type Foo = i32; | ------------------- not a struct, enum, function, associated function, or union error: aborting due to previous error For more information about this error, try `rustc --explain E0517`.