unsafe

use std::mem::MaybeUninit;

fn main() {
    let mut uninit: MaybeUninit<i32> = MaybeUninit::uninit();
    unsafe {
        uninit.as_mut_ptr().write(42);

extern "C" {
    fn abs(input: i32) -> i32;
}

pub fn safe_abs(input: i32) -> i32 {
    unsafe { abs(input) }

#![feature(asm)]

fn add_asm(a: u64, b: u64) -> u64 {
    let result: u64;
    unsafe {
        asm!(