blob: 6eb2a11b22c5f359e89099183bcdd64c9c54f301 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
|
#![feature(type_alias_impl_trait)]
type A = impl Foo;
type B = impl Foo;
trait Foo {}
fn muh(x: A) -> B {
if false {
return Bar; // B's hidden type is Bar
}
x // A's hidden type is `Bar`, because all the hidden types of `B` are compared with each other
//~^ ERROR opaque type's hidden type cannot be another opaque type
}
struct Bar;
impl Foo for Bar {}
fn main() {}
|