fixed possible division by zero

13 years ago · 252126cf76
2 changed files with 4 additions and 1 deletions
--- a/3
+++ b/3
@ -80,6 +80,9 @@ HISTORY

 ++ Bugfixes:

+  2013-04-24: Simon Goldschmidt
+  * igmp.c: fixed possible division by zero
+
  2013-04-24: Simon Goldschmidt
  * ip6.h, some ipv6 C files: fixed bug #38526 Coverity: Recursive Header Inclusion in ip6.h

--- a/src/core/ipv4/igmp.c
+++ b/src/core/ipv4/igmp.c
@ -701,7 +701,7 @@ igmp_start_timer(struct igmp_group *group, u8_t max_time)
  }
 #ifdef LWIP_RAND
  /* ensure the random value is > 0 */
-  group->timer = (LWIP_RAND() % (max_time - 1)) + 1;
+  group->timer = (LWIP_RAND() % max_time);
 #endif /* LWIP_RAND */
 }