File: ice-assoc-type-loop-102154.rs

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//@ check-pass
// https://github.com/rust-lang/rust/issues/102154

trait A<Y, N> {
    type B;
}
type MaybeBox<T> = <T as A<T, Box<T>>>::B;
struct P {
    t: MaybeBox<P>
}
impl<Y, N> A<Y, N> for P {
    type B = N;
}
fn main() {
    let t: MaybeBox<P>;
}