rust/tests/ui/nll/user-annotations/region-error-ice-109072.rs

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// Regression test for #109072.
// Check that we don't ICE when canonicalizing user annotation.
trait Lt<'a> {
type T;
}
impl Lt<'missing> for () { //~ ERROR undeclared lifetime
type T = &'missing (); //~ ERROR undeclared lifetime
}
fn main() {
let _: <() as Lt<'_>>::T = &();
}