Author: truckman
Date: Mon May 16 08:07:32 2016
New Revision: 299921
URL: https://svnweb.freebsd.org/changeset/base/299921
Log:
Add an assertion to catch a potential underflow in an array index
calculation, though this should not happen in the current code.
Reported by: Coverity
CID: 1008486
MFC after: 3 weeks
Modified:
head/sbin/ifconfig/ifieee80211.c
Modified: head/sbin/ifconfig/ifieee80211.c
==============================================================================
--- head/sbin/ifconfig/ifieee80211.c Mon May 16 08:04:40 2016
(r299920)
+++ head/sbin/ifconfig/ifieee80211.c Mon May 16 08:07:32 2016
(r299921)
@@ -3753,6 +3753,7 @@ list_txpow(int s)
/* suppress duplicates as above */
if (isset(reported, c->ic_ieee) && !verbose) {
/* XXX we assume duplicates are adjacent */
+ assert(achans->ic_nchans > 0);
prev = &achans->ic_chans[achans->ic_nchans-1];
/* display highest power on channel */
if (c->ic_maxpower > prev->ic_maxpower)
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