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//@ only-x86_64
use std::sync::atomic::{AtomicUsize, Ordering};
fn main() {
// `compare_exchange` (not weak) testing
let x = AtomicUsize::new(0);
// Allowed ordering combos
let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Relaxed);
let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Acquire);
let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::SeqCst);
let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Relaxed);
let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Acquire);
let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::SeqCst);
let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Relaxed);
let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Acquire);
let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::SeqCst);
let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Relaxed);
let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Acquire);
let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::SeqCst);
let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Relaxed);
let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Acquire);
let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::SeqCst);
// AcqRel is always forbidden as a failure ordering
let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::AcqRel);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::AcqRel);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::AcqRel);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::AcqRel);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::AcqRel);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
// Release is always forbidden as a failure ordering
let _ = x.compare_exchange(0, 0, Ordering::Relaxed, Ordering::Release);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::Acquire, Ordering::Release);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::Release, Ordering::Release);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::AcqRel, Ordering::Release);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
let _ = x.compare_exchange(0, 0, Ordering::SeqCst, Ordering::Release);
//~^ ERROR `compare_exchange`'s failure ordering may not be `Release` or `AcqRel`
}
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