src/test/ui/macros/macro-missing-fragment.rs - third_party/rust - Git at Google

 macro_rules! m {
     ( $( any_token $field_rust_type )* ) => {}; //~ ERROR missing fragment
 }

 fn main() {
     m!();
 }
	macro_rules! m {
	( $( any_token $field_rust_type )* ) => {}; //~ ERROR missing fragment
	}

	fn main() {
	m!();
	}