diff -r -u -I : procmail-3.22/src/autoconf procmail/src/autoconf
--- procmail-3.22/src/autoconf	2001-09-10 21:55:46.000000000 -0700
+++ procmail/src/autoconf	2008-07-06 23:12:48.000000000 -0700
@@ -1380,7 +1380,7 @@
 	 }
 	if(!newdiff)				    /* reductio ad adsurdum? */
 	   break;			    /* yes, break off the engagement */
-	sprintf(num,"%u",newdiff);nargv[argc+diff]=0;  /* pass on the target */
+	sprintf(num,"%u",newdiff);nargv[argc+newdiff]=0;  /* pass on the target */
 	execv(argv[0],nargv);					/* jeronimo! */
       }
 printit:				  /* we proudly present the findings */