struct A {

}

fn foo() -> A{
    let v = A{};
    let vptr = (&v as * const A) as  usize;
    println!("{:#x}", vptr);
    v
}

fn main() {
    let a = foo();
    let vptra = (&a as * const A) as  usize;
    println!("Returned: {:#x}", vptra);
    let b = foo();
    let vptrb = (&b as * const A) as  usize;
    println!("Returned: {:#x}", vptrb);
}