struct A {
    a: u32
}

fn foo() -> A{
    let v = A {a:52};
    let vptr = (&v as * const A) as  usize;
    println!("{:#x}", vptr);
    v
}

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


}