$NetBSD: patch-aa,v 1.3 2002/05/25 14:17:06 blymn Exp $

--- src/fe-text/tparm.c.orig	Sat Feb  9 08:40:12 2002
+++ src/fe-text/tparm.c
@@ -247,7 +247,7 @@
 	argcnt = 0;
 	pos = 0;
 	termcap = 1;
-	while (*sp != '\0') {
+	while ((sp != NULL) && (*sp != '\0')) {
 		switch(*sp) {
 		case '\\':
 			if (scan_for) {