From d8d0c5b1bc97ac0f07e35a31b58ced80ce613c55 Mon Sep 17 00:00:00 2001
From: David Lawrence <source@isc.org>
Date: Tue, 14 Mar 2000 04:01:52 +0000
Subject: [PATCH] explitictly REQUIRE that reqaddr is non-null in dns_acl_match

---
 lib/dns/acl.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/lib/dns/acl.c b/lib/dns/acl.c
index 9411ac8c48..d8d86ff7e0 100644
--- a/lib/dns/acl.c
+++ b/lib/dns/acl.c
@@ -139,6 +139,7 @@ dns_acl_match(isc_netaddr_t *reqaddr,
 	unsigned int i;
 	int indirectmatch;
 
+	REQUIRE(reqaddr != NULL);
 	REQUIRE(matchelt == NULL || *matchelt == NULL);
 	
 	for (i = 0; i < acl->length; i++) {
@@ -173,6 +174,7 @@ dns_acl_match(isc_netaddr_t *reqaddr,
 			 * "no match".
 			 * That way, a negated indirect ACL will never become 
 			 * a surprise positive match through double negation.
+			 * XXXDCL this should be documented.
 			 */
 			if (indirectmatch > 0)
 				goto matched;