use std::rc::Rc;
use std::slice;
use std::mem;

/*
    struct Rc {
        ptr: struct NonNull {
            pointer: struct RcBox<T: ?Sized> {
                strong: struct Cell {
                    value: struct UnsafeCell {
                        value: usize
                    }
                },
                weak: struct Cell {
                    value: struct UnsafeCell {
                        value: usize
                    }
                },
                value: T,
            },
        }
        phantom: PhantomData<T>,
    }
*/
fn main() {
    let mut rc = Rc::new(5u32);

    let mut info = unsafe {
        slice::from_raw_parts_mut(&mut rc as *mut _ as *mut u8, mem::size_of::<Rc<u32>>())
    };

    unsafe {

        let base_ptr = info.as_mut_ptr() as *mut *mut ([usize; 2], u32);

        println!("{:?}", **base_ptr);

        (**base_ptr).0[0] = std::usize::MAX; // strong count
        (**base_ptr).0[1] = std::usize::MAX; // weak count

        println!("{:?}", **base_ptr);

    }

    let c = rc.clone();


    println!("{:?}", info);

}