tv_divide(): Check for division by zero

diff --git a/time.c b/time.c
index 49b941b..83231c8 100644 (file)
--- a/time.c
+++ b/time.c
@@ -113,7 +113,13 @@ void tv_scale(const unsigned long mult, const struct timeval *tv,
 void tv_divide(const unsigned long divisor, const struct timeval *tv,
        struct timeval *result)
 {
-       long unsigned q = tv->tv_usec / divisor;
+       long unsigned q;
+
+       if (!divisor) {
+               PARA_EMERG_LOG("%s\n", "division by zero");
+               exit(EXIT_FAILURE);
+       }
+       q = tv->tv_usec / divisor;
        result->tv_sec = tv->tv_sec / divisor;
        result->tv_usec = (tv->tv_sec - result->tv_sec * divisor)
                * 1000 * 1000 / divisor;