rust/tests/fail/sync/libc_pthread_rwlock_write_write_deadlock.rs

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//@ignore-windows: No libc on Windows
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#![feature(rustc_private)]
extern crate libc;
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use std::cell::UnsafeCell;
use std::sync::Arc;
use std::thread;
struct RwLock(UnsafeCell<libc::pthread_rwlock_t>);
unsafe impl Send for RwLock {}
unsafe impl Sync for RwLock {}
fn new_lock() -> Arc<RwLock> {
Arc::new(RwLock(UnsafeCell::new(libc::PTHREAD_RWLOCK_INITIALIZER)))
}
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fn main() {
unsafe {
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let lock = new_lock();
assert_eq!(libc::pthread_rwlock_wrlock(lock.0.get() as *mut _), 0);
let lock_copy = lock.clone();
thread::spawn(move || {
assert_eq!(libc::pthread_rwlock_wrlock(lock_copy.0.get() as *mut _), 0); //~ ERROR: deadlock
})
.join()
.unwrap();
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}
}