rust/tests/ui/never_type/impl_trait_fallback4.rs

25 lines
316 B
Rust

#![feature(type_alias_impl_trait)]
trait T {
type Assoc: Cake;
}
trait Cake: std::fmt::Display {
fn cake() -> Self;
}
type Foo = impl T;
fn foo() -> impl T {
//~^ ERROR `(): T` is not satisfied
panic!()
}
fn a() -> Foo {
foo()
}
fn main() {
println!("{}", <Foo as T>::Assoc::cake());
}