//@ revisions: current next
//@ ignore-compare-mode-next-solver (explicit revisions)
//@[next] compile-flags: -Znext-solver
//@ check-pass

// Make sure we prefer the `I::IntoIterator: Iterator<Item = ()>`
// where-bound over the `I::Intoiterator: Iterator<Item = I::Item>`
// alias-bound.

trait Iterator {
    type Item;
}

trait IntoIterator {
    type Item;
    type IntoIter: Iterator<Item = Self::Item>;
}

fn normalize<I: Iterator<Item = ()>>() {}

fn foo<I>()
where
    I: IntoIterator,
    I::IntoIter: Iterator<Item = ()>,
{
    normalize::<I::IntoIter>();
}

fn main() {}