$NetBSD: patch-ad,v 1.1.1.1 2004/10/29 17:26:18 erh Exp $

--- lib/tarfn.c.orig	2004-10-29 16:55:01.000000000 +0000
+++ lib/tarfn.c	2004-10-29 16:56:37.000000000 +0000
@@ -58,7 +58,8 @@
 	int	len;
 	char *	str;
 
-	len = strnlen(s, size);
+	char *nul = memchr(s, 0, size);
+	len = nul ? (nul - s) : size;
 	str = malloc(len + 1);
 	memcpy(str, s, len);
 	str[len] = 0;