src/test/ui/traits/astconv-cycle-between-and-type.rs


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
26
27
28
29

// run-pass
// Test that we are able to successfully compile a setup where a trait
// (`Trait1`) references a struct (`SomeType<u32>`) which in turn
// carries a predicate that references the trait (`u32 : Trait1`,
// substituted).

// pretty-expanded FIXME #23616

#![allow(dead_code)]

trait Trait1 : Trait2<SomeType<u32>> {
    fn dumb(&self) { }
}

trait Trait2<A> {
    fn dumber(&self, _: A) { }
}

struct SomeType<A>
    where A : Trait1
{
    a: A
}

impl Trait1 for u32 { }

impl Trait2<SomeType<u32>> for u32 { }

fn main() { }