static_str_from_string.rs

#![allow(unused_imports)]

use std::mem::{forget, transmute};
use std::slice::from_raw_parts;
use std::str::from_utf8_unchecked;

fn assert_static<T: 'static>(_: T) {}

fn main() {
    let str = {
        let string = String::from("hello, world!");

        let str = unsafe { from_utf8_unchecked(from_raw_parts(string.as_ptr(), string.len())) };
        forget(string);

        // let str = unsafe { transmute::<_, (&'static str, usize)>(string).0 };

        assert_static(str);
        str
    };
    let _string = String::from("!dlrow, olleh");

    println!("{}", str);
}