[src/trunk]: src/sys/netinet6 add sanity check on in6_ifaddr.

[itojun <itojun%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/680f025afb9a
branches:  trunk
changeset: 487816:680f025afb9a
user:      itojun <itojun%NetBSD.org@localhost>
date:      Tue Jun 13 04:35:29 2000 +0000

description:
add sanity check on in6_ifaddr.

diffstat:

 sys/netinet6/nd6_rtr.c |  13 ++++++++++---
 1 files changed, 10 insertions(+), 3 deletions(-)

diffs (28 lines):

diff -r 2aeaa78af6fe -r 680f025afb9a sys/netinet6/nd6_rtr.c
--- a/sys/netinet6/nd6_rtr.c    Tue Jun 13 04:25:31 2000 +0000
+++ b/sys/netinet6/nd6_rtr.c    Tue Jun 13 04:35:29 2000 +0000
@@ -1,5 +1,5 @@
-/*     $NetBSD: nd6_rtr.c,v 1.16 2000/06/13 02:54:11 itojun Exp $      */
-/*     $KAME: nd6_rtr.c,v 1.39 2000/06/13 02:50:43 itojun Exp $        */
+/*     $NetBSD: nd6_rtr.c,v 1.17 2000/06/13 04:35:29 itojun Exp $      */
+/*     $KAME: nd6_rtr.c,v 1.40 2000/06/13 03:02:29 jinmei Exp $        */
 
 /*
  * Copyright (C) 1995, 1996, 1997, and 1998 WIDE Project.
@@ -1233,8 +1233,15 @@
                for( ; oia->ia_next; oia = oia->ia_next)
                        continue;
                oia->ia_next = ia;
-       } else
+       } else {
+               /*
+                * This should be impossible, since we have at least one
+                * link-local address (see the beginning of this function).
+                * XXX: should we rather panic here?
+                */
+               printf("in6_ifadd: in6_ifaddr is NULL (impossible!)\n");
                in6_ifaddr = ia;
+       }
        /* gain a refcnt for the link from in6_ifaddr */
        IFAREF((struct ifaddr *)ia);