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#![feature(impl_trait_in_assoc_type)]
// We weren't checking that the trait and impl generics line up in the
// normalization-shortcut code in `OpaqueTypeCollector`.
use std::ops::Deref;
trait Foo {
type Bar<'a>;
type Baz<'a>;
fn test<'a>() -> Self::Bar<'a>;
}
impl Foo for () {
type Bar<'a> = impl Deref<Target = Self::Baz<'a>>;
type Baz<T> = impl Sized;
//~^ ERROR type `Baz` has 1 type parameter but its trait declaration has 0 type parameters
//~| ERROR: unconstrained opaque type
fn test<'a>() -> Self::Bar<'a> {
&()
}
}
fn main() {}
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