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//@ run-pass
#![allow(unused_variables)]
// Test that we can resolve nested projection types. Issue #20666.
use std::slice;
trait Bound {}
impl<'a> Bound for &'a i32 {}
trait IntoIterator {
type Iter: Iterator;
fn into_iter(self) -> Self::Iter; //~ WARN method `into_iter` is never used
}
impl<'a, T> IntoIterator for &'a [T; 3] {
type Iter = slice::Iter<'a, T>;
fn into_iter(self) -> slice::Iter<'a, T> {
self.iter()
}
}
fn foo<X>(x: X) where
X: IntoIterator,
<<X as IntoIterator>::Iter as Iterator>::Item: Bound,
{
}
fn bar<T, I, X>(x: X) where
T: Bound,
I: Iterator<Item=T>,
X: IntoIterator<Iter=I>,
{
}
fn main() {
foo(&[0, 1, 2]);
bar(&[0, 1, 2]);
}
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