1 // check-pass: this used to be a stack overflow because of recursion in `usefulness.rs`
3 macro_rules! long_tuple_arg {
4 ([$($t:tt)*]#$($h:tt)*) => {
5 long_tuple_arg!{[$($t)*$($t)*]$($h)*}
7 ([$([$t:tt $y:tt])*]) => {
8 pub fn _f(($($t,)*): ($($y,)*)) {}
12 long_tuple_arg!{[[_ u8]]########## ###}