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// check-pass
trait Mirror {
type Other;
}
#[derive(Debug)]
struct Even(usize);
struct Odd;
impl Mirror for Even {
type Other = Odd;
}
impl Mirror for Odd {
type Other = Even;
}
trait Dyn<T: Mirror>: AsRef<<T as Mirror>::Other> {}
impl Dyn<Odd> for Even {}
impl AsRef<Even> for Even {
fn as_ref(&self) -> &Even {
self
}
}
fn code<T: Mirror>(d: &dyn Dyn<T>) -> &T::Other {
d.as_ref()
}
fn main() {
println!("{:?}", code(&Even(22)));
}
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