error[E0739]: attribute should be applied to a function definition
  --> $DIR/issue-105594-invalid-attr-validation.rs:6:1
   |
LL | #[track_caller]
   | ^^^^^^^^^^^^^^^
LL | static _A: () = ();
   | ------------------- not a function definition

error: aborting due to 1 previous error

For more information about this error, try `rustc --explain E0739`.