diff --git a/contrib/OpenWRT/test_required/testcase.c b/contrib/OpenWRT/test_required/testcase.c
new file mode 100644
index 0000000..11d7882
--- /dev/null
+++ b/contrib/OpenWRT/test_required/testcase.c
@@ -0,0 +1,90 @@
+#include <pthread.h>
+#include <stdio.h>
+#include <strings.h>
+#include <assert.h>
+
+static pthread_barrier_t bar;
+static pthread_mutex_t mtx = PTHREAD_MUTEX_INITIALIZER;
+static pthread_cond_t cnd = PTHREAD_COND_INITIALIZER;
+static int called = 0;
+
+#ifndef ASSERT
+#define ASSERT(x) assert(x)
+#endif /* ASSERT */
+
+static void cleanupmutex(void * arg)
+{
+	printf("cancelation cleanup handler called\n");
+	if (arg) {
+		ASSERT( pthread_mutex_unlock((pthread_mutex_t *)arg) == 0 );
+		called++;
+	}
+	
+}
+
+static void * mythread(void * a)
+{
+	int ret;
+	
+	/* lock mutex */
+	ASSERT( pthread_mutex_lock(&mtx) == 0 );
+		
+	/* Push cleanup */
+	pthread_cleanup_push(cleanupmutex, &mtx);
+	
+	printf("thread synchronization (mutex acquired)\n");
+	
+	/* Wake the other thread */
+	ret = pthread_barrier_wait(&bar);
+	ASSERT( (ret == 0) || (ret == PTHREAD_BARRIER_SERIAL_THREAD) );
+	
+	/* Now wait for the condition, this unlocks the mutex */
+	do {
+		printf("thread waiting cond\n");
+		ASSERT( pthread_cond_wait(&cnd, &mtx) == 0);
+		printf("thread woken\n");
+	} while (1);
+	
+	/* Cleanup, never reached */
+	pthread_cleanup_pop(1);
+	return NULL;
+}
+
+int main(int argc, char * argv[])
+{
+	int ret;
+	pthread_t thr;
+	void * dummy;
+	
+	/* initialize the barrier */
+	ASSERT( pthread_barrier_init(&bar, NULL, 2) == 0 );
+	
+	printf("Creating thread\n");
+	
+	/* Create the thread */
+	ASSERT( pthread_create(&thr, NULL, mythread, NULL) == 0 );
+	
+	printf("main synchronization\n");
+	ret = pthread_barrier_wait(&bar);
+	ASSERT( (ret == 0) || (ret == PTHREAD_BARRIER_SERIAL_THREAD) );
+	
+	ASSERT( pthread_mutex_lock(&mtx) == 0 );
+	printf("main: thread is now waiting for condvar\n");
+	
+	/* Cancel the thread */
+	ASSERT( pthread_cancel(thr) == 0 );
+	
+	/* Now, unlock, so that the thread can actually really exit */
+	ASSERT( pthread_mutex_unlock(&mtx) == 0 );
+	
+	/* Release thread resources */
+	ASSERT( pthread_join(thr, &dummy) == 0 );
+	
+	if (called == 1)
+		printf("Test successful!\n");
+	else
+		printf("Test failed! Cleanup was not called (& lock not released)\n");
+	
+	return 0;
+	
+}