error[E0518]: attribute should be applied to function or closure
  --> $DIR/issue-31769.rs:2:5
   |
LL |     #[inline] struct Foo;
   |     ^^^^^^^^^ ----------- not a function or closure

error[E0517]: attribute should be applied to a struct, enum, or union
  --> $DIR/issue-31769.rs:3:12
   |
LL |     #[repr(C)] fn foo() {}
   |            ^   ----------- not a struct, enum, or union

error: aborting due to 2 previous errors

Some errors have detailed explanations: E0517, E0518.
For more information about an error, try `rustc --explain E0517`.