tests: fix potential divide by zero condition

[openafs.git] / tests / rx / event-t.c

diff --git a/tests/rx/event-t.c b/tests/rx/event-t.c
index 008cadb..7c4fdc5 100644 (file)
--- a/tests/rx/event-t.c
+++ b/tests/rx/event-t.c
@@ -166,9 +166,11 @@ main(void)
                 = rxevent_Post(&eventTime, &now, eventSub, &events[counter],
                                NULL, 0);
        }
-
-       /* A 25% chance that we will cancel a random event */
-       if (random() % 4 == 0) {
+       /*
+        * A 25% chance that we will cancel some event.
+        * Randomly pick any event that was scheduled before the current event.
+        */
+       if (counter > 0 && (random() % 4 == 0)) {
            int victim = random() % counter;
 
            if (rxevent_Cancel(&events[victim].event))