From: Simon Goldschmidt <goldsimon@gmx.de>
Date: Wed, 24 Apr 2013 20:20:12 +0000 (+0200)
Subject: fixed possible division by zero
X-Git-Url: http://rtime.felk.cvut.cz/gitweb/pes-rpp/rpp-lwip.git/commitdiff_plain/252126cf767682c27d765cf3efa3a750a609961b

fixed possible division by zero
---

diff --git a/CHANGELOG b/CHANGELOG
index 54cc1194..cd627dbf 100644
--- a/CHANGELOG
+++ b/CHANGELOG
@@ -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
 
diff --git a/src/core/ipv4/igmp.c b/src/core/ipv4/igmp.c
index bd52744f..9cb4c0c6 100644
--- 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 */
 }