#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::sync::atomic::AtomicBool;
use std::sync::atomic::Ordering;
use std::sync::atomic::compiler_fence;
static mut IMPORTANT_VARIABLE: usize = 0;
static IS_READY: AtomicBool = AtomicBool::new(false);
fn main() {
    unsafe { IMPORTANT_VARIABLE = 42 };
    compiler_fence(Ordering::Release);
    IS_READY.store(true, Ordering::Relaxed);
}
fn signal_handler() {
    if IS_READY.load(Ordering::Relaxed) {
        compiler_fence(Ordering::Acquire);
        assert_eq!(unsafe { IMPORTANT_VARIABLE }, 42);
    }
}