| // check-pass | |
| #![allow(dead_code)] | |
| use std::ops::{Deref, DerefMut}; | |
| struct Foo; | |
| impl Foo { | |
| fn foo_mut(&mut self) {} | |
| } | |
| struct Bar(Foo); | |
| impl Deref for Bar { | |
| type Target = Foo; | |
| fn deref(&self) -> &Foo { | |
| &self.0 | |
| } | |
| } | |
| impl DerefMut for Bar { | |
| fn deref_mut(&mut self) -> &mut Foo { | |
| &mut self.0 | |
| } | |
| } | |
| fn test(mut bar: Box<Bar>) { | |
| bar.foo_mut(); | |
| } | |
| fn main() {} |