rustc/tests/ui/underscore-lifetime/where-clause-inherent-impl-ampersand-rust2018.rs

// edition:2018
// run-rustfix

trait WithType<T> {}
trait WithRegion<'a> { }

#[allow(dead_code)]
struct Foo<T> {
    t: T
}

impl<T> Foo<T>
where
    T: WithType<&u32>
//~^ ERROR `&` without an explicit lifetime name cannot be used here
{ }

fn main() {}