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#![feature(type_alias_impl_trait)]
#![allow(dead_code)]
use std::fmt::Debug;
type FooX = impl Debug;
trait Foo<A> { }
impl Foo<()> for () { }
fn foo() -> impl Foo<FooX> {
//~^ ERROR: the trait bound `(): Foo<FooX>` is not satisfied
// FIXME(type-alias-impl-trait): We could probably make this work.
()
}
fn main() { }
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