$OpenBSD: patch-pbm_pktopbm_c,v 1.1 2003/03/29 04:13:54 brad Exp $
--- pbm/pktopbm.c.orig	Thu Jan 25 22:42:30 2001
+++ pbm/pktopbm.c	Fri Mar 28 20:22:07 2003
@@ -255,7 +255,8 @@ main(argc, argv)
       if (turnon) flagbyte &= 7 ;		/* long or short form */
       if (flagbyte == 7) {			/* long form preamble */
 	 integer packetlength = get32() ;	/* character packet length */
-	 car = get32() ;			/* character number */
+	 car = get32() ;			/* character number */	
+	 overflow_add(packetlength, pktopbm_pkloc);
 	 endofpacket = packetlength + pktopbm_pkloc ;	/* calculate end of packet */
          if ((car >= MAXPKCHAR) || !filename[car]) {
 	    ignorechar(car, endofpacket);