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#![feature(generic_associated_types)]
// check-fail
trait StreamingIter {
type Item<'a> where Self: 'a;
fn next<'a>(&'a mut self) -> Option<Self::Item::<'a>>;
}
struct StreamingSliceIter<'a, T> {
idx: usize,
data: &'a mut [T],
}
impl<'b, T: 'b> StreamingIter for StreamingSliceIter<'b, T> {
type Item<'a> = &'a mut T;
//~^ the parameter type
fn next(&mut self) -> Option<&mut T> {
loop {}
}
}
fn main() {}
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