tests/ui/hygiene/expansion-info-reset.rs - toolchain/rustc - Git at Google

 fn main() {
     format_args!({ #[derive(Clone)] struct S; });
     //~^ ERROR format argument must be a string literal
 }
	fn main() {
	format_args!({ #[derive(Clone)] struct S; });
	//~^ ERROR format argument must be a string literal
	}