Please note that diffs are not public domain; they are subject to the
copyright notices on the relevant files.

===================================================================
RCS file: /ftp/cvs/cvsroot/src/sbin/disklabel/dkcksum.c,v
rcsdiff: /ftp/cvs/cvsroot/src/sbin/disklabel/dkcksum.c,v: warning: Unknown phrases like `commitid ...;' are present.
retrieving revision 1.13
retrieving revision 1.14
diff -u -p -r1.13 -r1.14
--- src/sbin/disklabel/dkcksum.c	2010/01/05 15:45:26	1.13
+++ src/sbin/disklabel/dkcksum.c	2013/05/03 16:05:12	1.14
@@ -1,4 +1,4 @@
-/*	$NetBSD: dkcksum.c,v 1.13 2010/01/05 15:45:26 tsutsui Exp $	*/
+/*	$NetBSD: dkcksum.c,v 1.14 2013/05/03 16:05:12 matt Exp $	*/
 
 /*-
  * Copyright (c) 1991, 1993
@@ -38,7 +38,7 @@
 #if 0
 static char sccsid[] = "@(#)dkcksum.c	8.1 (Berkeley) 6/5/93";
 #else
-__RCSID("$NetBSD: dkcksum.c,v 1.13 2010/01/05 15:45:26 tsutsui Exp $");
+__RCSID("$NetBSD: dkcksum.c,v 1.14 2013/05/03 16:05:12 matt Exp $");
 #endif
 #endif /* not lint */
 
@@ -51,22 +51,23 @@ __RCSID("$NetBSD: dkcksum.c,v 1.13 2010/
 #include "dkcksum.h"
 
 uint16_t
-dkcksum(struct disklabel *lp)
+dkcksum(const struct disklabel *lp)
 {
 
 	return dkcksum_sized(lp, lp->d_npartitions);
 }
 
 uint16_t
-dkcksum_sized(struct disklabel *lp, size_t npartitions)
+dkcksum_sized(const struct disklabel *lp, size_t npartitions)
 {
-	uint16_t *start, *end;
+	const uint16_t *start, *end;
 	uint16_t sum;
 
 	sum = 0;
-	start = (uint16_t *)lp;
-	end = (uint16_t *)&lp->d_partitions[npartitions];
-	while (start < end)
+	start = (const uint16_t *)lp;
+	end = (const uint16_t *)&lp->d_partitions[npartitions];
+	while (start < end) {
 		sum ^= *start++;
+	}
 	return sum;
 }