32 lines
768 B
Rust
32 lines
768 B
Rust
// ignore-windows: Concurrency on Windows is not supported yet.
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use std::thread::spawn;
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use std::sync::atomic::AtomicUsize;
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use std::sync::atomic::Ordering;
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#[derive(Copy, Clone)]
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struct EvilSend<T>(pub T);
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unsafe impl<T> Send for EvilSend<T> {}
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unsafe impl<T> Sync for EvilSend<T> {}
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pub fn main() {
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let mut a = AtomicUsize::new(0);
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let b = &mut a as *mut AtomicUsize;
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let c = EvilSend(b);
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unsafe {
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let j1 = spawn(move || {
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let atomic_ref = &mut *c.0;
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atomic_ref.store(64, Ordering::SeqCst);
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});
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let j2 = spawn(move || {
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let atomic_ref = &mut *c.0;
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*atomic_ref.get_mut() = 32; //~ ERROR Data race
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});
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j1.join().unwrap();
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j2.join().unwrap();
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}
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}
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