#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::ptr::NonNull;
fn main() {
    let mut x = 0u32;
    let ptr = NonNull::new(&mut x as *mut _).expect("null pointer");
    let casted_ptr = ptr.cast::<i8>();
    let raw_ptr: *mut i8 = casted_ptr.as_ptr();
}