#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(ptr_as_uninit)]
fn main() {
    let ptr: *mut u8 = &mut 10u8 as *mut u8;
    unsafe {
        if let Some(val_back) = ptr.as_uninit_ref() {
            println!("We got back the value: {}!", val_back.assume_init());
        }
    }
}