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//@ build-fail
//~^ ERROR overflow evaluating the requirement `i32: Check`
#![feature(specialization)]
//~^ WARN the feature `specialization` is incomplete
trait Iterate<'a> {
type Ty: Valid;
fn iterate(self);
}
impl<'a, T> Iterate<'a> for T
where
T: Check,
{
default type Ty = ();
default fn iterate(self) {}
}
trait Check {}
impl<'a, T> Check for T where <T as Iterate<'a>>::Ty: Valid {}
trait Valid {}
impl Valid for () {}
fn main() {
Iterate::iterate(0);
}
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