tests/ui/codemap_tests/unicode_3.rs - toolchain/rustc - Git at Google

 //@ check-pass

 fn main() {
     let s = "ZͨA͑ͦ͒͋ͤ͑̚L̄͑͋Ĝͨͥ̿͒̽̈́Oͥ͛ͭ!̏"; while true { break; } //~ WARNING while_true
     println!("{}", s);
 }
	//@ check-pass

	fn main() {
	let s = "ZͨA͑ͦ͒͋ͤ͑̚L̄͑͋Ĝͨͥ̿͒̽̈́Oͥ͛ͭ!̏"; while true { break; } //~ WARNING while_true
	println!("{}", s);
	}