#![allow(dead_code, deprecated, unused_variables, unused_mut)]
#![feature(maybe_uninit_array_assume_init)]
use std::mem::MaybeUninit;
fn main() {
    let mut array: [MaybeUninit<i32>; 3] = [MaybeUninit::uninit(); 3];
    array[0].write(0);
    array[1].write(1);
    array[2].write(2);
    let array = unsafe { MaybeUninit::array_assume_init(array) };
    assert_eq!(array, [0, 1, 2]);
}