#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::ptr::NonNull;
fn main() {
    let mut x = [5, 6, 7];
    let nonnull_pointer = NonNull::new(x.as_mut_ptr()).unwrap();
    let slice = NonNull::slice_from_raw_parts(nonnull_pointer, 3);
    assert_eq!(unsafe { slice.as_ref() [2] }, 7);
}