Zero out IPv6 mask before using it. This fixes expressions like

[libpcap] / gencode.c

diff --git a/gencode.c b/gencode.c
index cc93e2f883dc816422f97cd54fd3008287069b3d..b1b303ed1399a6d747880635ac29cc7852a3d8de 100644 (file)
--- a/gencode.c
+++ b/gencode.c
@@ -21,7 +21,7 @@
  */
 #ifndef lint
 static const char rcsid[] =
-    "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.158 2001-09-20 00:24:24 fenner Exp $ (LBL)";
+    "@(#) $Header: /tcpdump/master/libpcap/gencode.c,v 1.159 2001-11-12 21:59:44 fenner Exp $ (LBL)";
 #endif
 
 #ifdef HAVE_CONFIG_H
@@ -3265,6 +3265,7 @@ gen_mcode6(s1, s2, masklen, q)
 
        if (sizeof(mask) * 8 < masklen)
                bpf_error("mask length must be <= %u", (unsigned int)(sizeof(mask) * 8));
+       memset(&mask, 0, sizeof(mask));
        memset(&mask, 0xff, masklen / 8);
        if (masklen % 8) {
                mask.s6_addr[masklen / 8] =