#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::pin::Pin;
use std::marker::PhantomPinned;
use std::ptr::NonNull;
struct Unmovable {
    data: [u8; 64],
    slice: NonNull<[u8]>,
    _pin: PhantomPinned,
}
impl Unmovable {
    fn assign(self: Pin<&mut Self>, src: Pin<&mut Self>) {
        unsafe {
            let unpinned_self = Pin::into_inner_unchecked(self);
            let unpinned_src = Pin::into_inner_unchecked(src);
            *unpinned_self = Self {
                data: unpinned_src.data,
                slice: NonNull::from(&mut []),
                _pin: PhantomPinned,
            };
            let data_ptr = unpinned_src.data.as_ptr() as *const u8;
            let slice_ptr = unpinned_src.slice.as_ptr() as *const u8;
            let offset = slice_ptr.offset_from(data_ptr) as usize;
            let len = unpinned_src.slice.as_ptr().len();
            unpinned_self.slice = NonNull::from(
                &mut unpinned_self.data[offset..offset + len],
            );
        }
    }
}
fn main() {}