26 lines
388 B
Rust
26 lines
388 B
Rust
// run-pass
|
|
// compile-flags: -Z chalk
|
|
|
|
trait Foo { }
|
|
|
|
trait Bar {
|
|
type Item: Foo;
|
|
}
|
|
|
|
impl Foo for i32 { }
|
|
impl Bar for i32 {
|
|
type Item = i32;
|
|
}
|
|
|
|
fn only_foo<T: Foo>() { }
|
|
|
|
fn only_bar<T: Bar>() {
|
|
// `T` implements `Bar` hence `<T as Bar>::Item` must also implement `Bar`
|
|
only_foo::<T::Item>()
|
|
}
|
|
|
|
fn main() {
|
|
only_bar::<i32>();
|
|
only_foo::<<i32 as Bar>::Item>();
|
|
}
|