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//@ check-fail
//@ known-bug: #88382
// This should pass, but has a missed normalization due to HRTB.
trait Iterable {
type Iterator<'a> where Self: 'a;
fn iter(&self) -> Self::Iterator<'_>;
}
struct SomeImplementation();
impl Iterable for SomeImplementation {
type Iterator<'a> = std::iter::Empty<usize>;
fn iter(&self) -> Self::Iterator<'_> {
std::iter::empty()
}
}
fn do_something<I: Iterable>(i: I, mut f: impl for<'a> Fn(&mut I::Iterator<'a>)) {
f(&mut i.iter());
}
fn main() {
do_something(SomeImplementation(), |_| ());
do_something(SomeImplementation(), test);
}
fn test<'a, I: Iterable>(_: &mut I::Iterator<'a>) {}
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