From 45ad059c4a36b1c83bcf930f88c1d53497698b1a Mon Sep 17 00:00:00 2001
From: Evan Hunt <each@isc.org>
Date: Thu, 13 Aug 2015 14:58:28 -0700
Subject: [PATCH] [master] address VS2015 compiler warning

---
 lib/dns/rpz.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/lib/dns/rpz.c b/lib/dns/rpz.c
index cfc553eac0..551b19ff49 100644
--- a/lib/dns/rpz.c
+++ b/lib/dns/rpz.c
@@ -512,7 +512,7 @@ fix_qname_skip_recurse(dns_rpz_zones_t *rpzs) {
 		 * more significant bits are 0. (For instance,
 		 * 0x0700 => 0x00ff, 0x0007 => 0x0000)
 		 */
-		mask = ~(zbits_req | -zbits_req);
+		mask = ~(zbits_req | ((~zbits_req) + 1));
 
 		/*
 		 * As mentioned in (2) above, the zone corresponding to