| //@ check-pass |
| |
| use std::io::Write; |
| |
| struct A(Vec<u8>); |
| |
| struct B<'a> { |
| one: &'a mut A, |
| two: &'a mut Vec<u8>, |
| three: Vec<u8>, |
| } |
| |
| impl<'a> B<'a> { |
| fn one(&mut self) -> &mut impl Write { |
| &mut self.one.0 |
| } |
| fn two(&mut self) -> &mut impl Write { |
| &mut *self.two |
| } |
| fn three(&mut self) -> &mut impl Write { |
| &mut self.three |
| } |
| } |
| |
| struct C<'a>(B<'a>); |
| |
| impl<'a> C<'a> { |
| fn one(&mut self) -> &mut impl Write { |
| self.0.one() |
| } |
| fn two(&mut self) -> &mut impl Write { |
| self.0.two() |
| } |
| fn three(&mut self) -> &mut impl Write { |
| self.0.three() |
| } |
| } |
| |
| fn main() {} |
