$OpenBSD: patch-pbm_pbmtoybm_c,v 1.1 2003/03/29 04:13:54 brad Exp $
--- pbm/pbmtoybm.c.orig	Mon Oct  4 05:10:43 1993
+++ pbm/pbmtoybm.c	Fri Mar 28 20:22:07 2003
@@ -45,6 +45,7 @@ main( argc, argv )
     bitrow = pbm_allocrow( cols );
     
     /* Compute padding to round cols up to the nearest multiple of 16. */
+    overflow_add(cols, 16);
     padright = ( ( cols + 15 ) / 16 ) * 16 - cols;
 
     putinit( cols, rows );
