Shared via Rust Playground

playground.rs

#[derive(Debug)]
struct Parent {
    count: u8,
}

#[derive(Debug)]
struct Child<'a> {
    parent: &'a Parent,
}

#[derive(Debug)]
struct Combined<'a> {
    parent: Box<Parent>,
    child: Child<'a>,
}


fn main() {

        let p = Box::new(Parent { count: 42 });
        let c = Child { parent: &*p };
        
        let c = Combined { parent: p, child: c };
        
        

}