3 #![feature(unsize, dispatch_from_dyn, never_type)]
9 marker::{Unsize, PhantomData},
13 struct NestedZst(PhantomData<()>, Zst);
16 struct WithUnit<T: ?Sized>(Box<T>, ());
17 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<WithUnit<U>> for WithUnit<T>
20 struct WithPhantom<T: ?Sized>(Box<T>, PhantomData<()>);
21 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<WithPhantom<U>> for WithPhantom<T>
24 struct WithNever<T: ?Sized>(Box<T>, !);
25 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<WithNever<U>> for WithNever<T>
28 struct WithZst<T: ?Sized>(Box<T>, Zst);
29 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<WithZst<U>> for WithZst<T>
32 struct WithNestedZst<T: ?Sized>(Box<T>, NestedZst);
33 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<WithNestedZst<U>> for WithNestedZst<T>
37 struct Generic<T: ?Sized, A>(Box<T>, A);
38 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Generic<U, ()>> for Generic<T, ()>
40 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Generic<U, PhantomData<()>>>
41 for Generic<T, PhantomData<()>>
43 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Generic<U, !>> for Generic<T, !>
45 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Generic<U, Zst>> for Generic<T, Zst>
47 impl<T: ?Sized, U: ?Sized> DispatchFromDyn<Generic<U, NestedZst>> for Generic<T, NestedZst>