#![allow(dead_code, deprecated, unused_variables, unused_mut)]
fn main() {
    unsafe {
        let mut x = [5_u8, 6, 7, 8, 9];
        let ptr = x.as_mut_ptr();
        let offset = ptr.align_offset(align_of::<u16>());
        if offset < x.len() - 1 {
            let u16_ptr = ptr.add(offset).cast::<u16>();
            *u16_ptr = 0;
            assert!(x == [0, 0, 7, 8, 9] || x == [5, 0, 0, 8, 9]);
        } else {}
    }
}