#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(slice_from_ptr_range)]
use core::slice;
fn main() {
    let mut x = [1, 2, 3];
    let range = x.as_mut_ptr_range();
    unsafe {
        assert_eq!(slice::from_mut_ptr_range(range), & mut [1, 2, 3]);
    }
}