#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(maybe_uninit_as_bytes)]
use std::mem::MaybeUninit;
fn main() {
    let val = 0x12345678_i32;
    let mut uninit = MaybeUninit::new(val);
    let uninit_bytes = uninit.as_bytes_mut();
    if cfg!(target_endian = "little") {
        uninit_bytes[0].write(0xcd);
    } else {
        uninit_bytes[3].write(0xcd);
    }
    let val2 = unsafe { uninit.assume_init() };
    assert_eq!(val2, 0x123456cd);
}