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// compile-flags: -Znext-solver
// check-pass
trait Trivial {
type Assoc;
}
impl<T: ?Sized> Trivial for T {
type Assoc = ();
}
fn main() {
// During writeback, we call `normalize_erasing_regions`, which will walk past
// the `for<'a>` binder and try to normalize `<&'a () as Trivial>::Assoc` directly.
// We need to handle this case in the new deep normalizer similarly to how it
// is handled in the old solver.
let x: Option<for<'a> fn(<&'a () as Trivial>::Assoc)> = None;
}
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