#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::slice;
use std::str;
fn main() {
    let story = "Once upon a time...";
    let ptr = story.as_ptr();
    let len = story.len();
    assert_eq!(19, len);
    let s = unsafe {
        let slice = slice::from_raw_parts(ptr, len);
        str::from_utf8(slice)
    };
    assert_eq!(s, Ok(story));
}