| //@ revisions: current next | |
| //@[next] compile-flags: -Znext-solver | |
| //@ ignore-compare-mode-next-solver (explicit revisions) | |
| //@check-pass | |
| #![feature(trait_upcasting, type_alias_impl_trait)] | |
| trait Super { | |
| type Assoc; | |
| } | |
| trait Sub: Super {} | |
| impl<T: ?Sized> Super for T { | |
| type Assoc = i32; | |
| } | |
| type Foo = impl Sized; | |
| fn upcast(x: &dyn Sub<Assoc = Foo>) -> &dyn Super<Assoc = i32> { | |
| x | |
| } | |
| fn main() {} |