rust/tests/ui/type-alias-impl-trait/impl-with-unconstrained-par...

20 lines
426 B
Rust

// Ensure that we don't ICE if associated type impl trait is used in an impl
// with an unconstrained type parameter.
#![feature(impl_trait_in_assoc_type)]
trait X {
type I;
fn f() -> Self::I;
}
impl<T> X for () {
//~^ ERROR the type parameter `T` is not constrained
type I = impl Sized;
fn f() -> Self::I {}
//~^ ERROR type annotations needed
//~| ERROR type annotations needed
}
fn main() {}