| //@ run-pass | |
| fn main() { let _ = g(Some(E::F(K))); } | |
| type R = Result<(), ()>; | |
| struct K; | |
| enum E { | |
| F(K), // must not be built-in type | |
| #[allow(dead_code)] | |
| G(Box<E>, Box<E>), | |
| } | |
| fn translate(x: R) -> R { x } | |
| fn g(mut status: Option<E>) -> R { | |
| loop { | |
| match status { | |
| Some(infix_or_postfix) => match infix_or_postfix { | |
| E::F(_op) => { // <- must be captured by value | |
| match Ok(()) { | |
| Err(err) => return Err(err), | |
| Ok(_) => {}, | |
| }; | |
| } | |
| _ => (), | |
| }, | |
| _ => match translate(Err(())) { | |
| Err(err) => return Err(err), | |
| Ok(_) => {}, | |
| } | |
| } | |
| status = None; | |
| } | |
| } |