1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
|
// Test that impl trait does not allow creating recursive types that are
// otherwise forbidden. Even when there's an opaque type in another crate
// hiding this.
fn id<T>(t: T) -> impl Sized { t }
fn recursive_id() -> impl Sized { //~ ERROR cannot resolve opaque type
id(recursive_id2())
}
fn recursive_id2() -> impl Sized { //~ ERROR cannot resolve opaque type
id(recursive_id())
}
fn wrap<T>(t: T) -> impl Sized { (t,) }
fn recursive_wrap() -> impl Sized { //~ ERROR cannot resolve opaque type
wrap(recursive_wrap2())
}
fn recursive_wrap2() -> impl Sized { //~ ERROR cannot resolve opaque type
wrap(recursive_wrap())
}
fn main() {}
|
