rust/tests/ui/track-diagnostics/track3.rs

//@ compile-flags: -Z track-diagnostics
//@ error-pattern: created at

// Normalize the emitted location so this doesn't need
// updating everytime someone adds or removes a line.
//@ normalize-stderr-test: ".rs:\d+:\d+" -> ".rs:LL:CC"

fn main() {
    let _unimported = Blah { field: u8 };
}