$OpenBSD: patch-pbm_pbmtoascii_c,v 1.1 2003/03/29 04:13:54 brad Exp $
--- pbm/pbmtoascii.c.orig	Sat Mar 25 17:23:05 2000
+++ pbm/pbmtoascii.c	Fri Mar 28 20:22:06 2003
@@ -115,9 +115,11 @@ char* argv[];
         pm_usage( usage );
 
     pbm_readpbminit( ifp, &cols, &rows, &format );
+    overflow_add(cols, gridx);
     ccols = ( cols + gridx - 1 ) / gridx;
     bitrow = pbm_allocrow( cols );
     sig = (int*) pm_allocrow( ccols, sizeof(int) );
+    overflow_add(ccols, 1);
     line = (char*) pm_allocrow( ccols + 1, sizeof(char) );
 
     for ( row = 0; row < rows; row += gridy )