Access array between threads without Arc/Mutex

raw_pointer_multithread.rs

use std::thread::spawn;

fn main() {
    let mut threads = vec![];
    let my_array: &'static [u8; 16] = Box::leak(Box::new([0; 16]));

    for i in 0..4 {
        let thread = spawn(move || {
            let my_array = my_array.as_ptr() as *mut u8;
            unsafe {
                my_array.offset(i).write(69);
            }
        });

        threads.push(thread);
    }

    for thread in threads {
        thread.join().unwrap();
    }

    println!("{:?}", my_array);
}