--- testThreads.c.orig	2009-09-11 18:09:00.268640135 +0200
+++ testThreads.c	2009-09-11 18:12:43.412653512 +0200
@@ -107,7 +107,7 @@
 
 	for (i = 0; i < num_threads; i++) {
 	    results[i] = NULL;
-	    tid[i] = (pthread_t) -1;
+	    memset(&tid[i], 0, sizeof(pthread_t));
 	}
 
 	for (i = 0; i < num_threads; i++) {