#![feature(maybe_uninit_ref)]

use std::mem::MaybeUninit;

struct MyRef<'a> {
    r: &'a mut i32
}

impl<'a> Drop for MyRef<'a> {
    fn drop(&mut self) {
        panic!("We shouldn't be dropping!");
    }
}

impl<'a> MyRef<'a> {
    fn destruct(self) -> &'a mut i32 {
        let mut maybe_uninit = MaybeUninit::new(self);
        unsafe {
            std::ptr::read(&maybe_uninit.get_mut().r)
        }
    }
}

fn main() {
    let mut x = 3;
    let my_ref = MyRef {
        r: &mut x
    };
    let x_ref = my_ref.destruct();
    println!("{}", *x_ref);
}