#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::ptr;
fn main() {
    let x = &mut [5, 6, 7];
    let raw_pointer = x.as_mut_ptr();
    let slice = ptr::slice_from_raw_parts_mut(raw_pointer, 3);
    unsafe {
        (*slice)[2] = 99;
    };
    assert_eq!(unsafe { &* slice } [2], 99);
}