From: Ken Raeburn <raeburn@mit.edu>
Date: Sat, 17 Jan 2009 01:00:22 +0000 (+0000)
Subject: If buffer length is 0, force pointer to NULL, to keep valgrind happier when callers... 
X-Git-Tag: krb5-1.7-alpha1~62
X-Git-Url: http://git.tremily.us/?a=commitdiff_plain;h=883d013266c6a3955fe692dc8d7d38dbef5c957f;p=krb5.git

If buffer length is 0, force pointer to NULL, to keep valgrind happier when callers don't bother

git-svn-id: svn://anonsvn.mit.edu/krb5/trunk@21762 dc483132-0cff-0310-8789-dd5450dbe970
---

diff --git a/src/lib/krb5/os/write_msg.c b/src/lib/krb5/os/write_msg.c
index 7586c9b86..e6001e8c6 100644
--- a/src/lib/krb5/os/write_msg.c
+++ b/src/lib/krb5/os/write_msg.c
@@ -52,11 +52,13 @@ krb5int_write_messages(krb5_context context, krb5_pointer fdp, krb5_data *outbuf
 	    nbufs1 = 1;
 	len[0] = htonl(outbuf[0].length);
 	SG_SET(&sg[0], &len[0], 4);
-	SG_SET(&sg[1], outbuf[0].data, outbuf[0].length);
+	SG_SET(&sg[1], outbuf[0].length ? outbuf[0].data : NULL,
+	       outbuf[0].length);
 	if (nbufs1 == 2) {
 	    len[1] = htonl(outbuf[1].length);
 	    SG_SET(&sg[2], &len[1], 4);
-	    SG_SET(&sg[3], outbuf[1].data, outbuf[1].length);
+	    SG_SET(&sg[3], outbuf[1].length ? outbuf[1].data : NULL,
+		   outbuf[1].length);
 	}
 	if (krb5int_net_writev(context, fd, sg, nbufs1 * 2) < 0) {
 	    return errno;