File: ice-struct-tail-normalization-113272.rs

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trait Trait {
    type RefTarget;
}

impl Trait for () where Missing: Trait {}
//~^ ERROR cannot find type `Missing` in this scope
//~| ERROR not all trait items implemented, missing: `RefTarget`

struct Other {
    data: <() as Trait>::RefTarget,
}

fn main() {
    unsafe {
        std::mem::transmute::<Option<()>, Option<&Other>>(None);
        //~^ ERROR cannot transmute between types of different sizes, or dependently-sized types
    }
}