1 // Check projection of an associated type out of a higher-ranked
2 // trait-bound in the context of a function body.
3
4 pub trait Foo<T> {
5 type A;
6
get(&self, t: T) -> Self::A7 fn get(&self, t: T) -> Self::A;
8 }
9
foo<'a, I : for<'x> Foo<&'x isize>>( x: <I as Foo<&'a isize>>::A)10 fn foo<'a, I : for<'x> Foo<&'x isize>>(
11 x: <I as Foo<&'a isize>>::A)
12 {
13 let y: I::A = x;
14 }
15
bar<'a, 'b, I : for<'x> Foo<&'x isize>>( x: <I as Foo<&'a isize>>::A, y: <I as Foo<&'b isize>>::A, cond: bool)16 fn bar<'a, 'b, I : for<'x> Foo<&'x isize>>(
17 x: <I as Foo<&'a isize>>::A,
18 y: <I as Foo<&'b isize>>::A,
19 cond: bool)
20 {
21 // x and y here have two distinct lifetimes:
22 let z: I::A = if cond { x } else { y };
23 //~^ ERROR lifetime mismatch
24 }
25
main()26 pub fn main() {}
27