| // check-pass | |
| enum Sexpression { | |
| Num(()), | |
| Cons(&'static mut Sexpression) | |
| } | |
| fn causes_error_in_ast(mut l: &mut Sexpression) { | |
| loop { match l { | |
| &mut Sexpression::Num(ref mut n) => {}, | |
| &mut Sexpression::Cons(ref mut expr) => { | |
| l = &mut **expr; | |
| } | |
| }} | |
| } | |
| fn main() { | |
| causes_error_in_ast(&mut Sexpression::Num(())); | |
| } |