From 9695806934f40054bc99d9ac6facab09eef93aab Mon Sep 17 00:00:00 2001
From: Bob Halley <source@isc.org>
Date: Sat, 19 Dec 1998 00:15:19 +0000
Subject: [PATCH] Don't allow type 0 to be used in a define.

---
 lib/isc/symtab.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/lib/isc/symtab.c b/lib/isc/symtab.c
index 45297411c5..b566f17e3e 100644
--- a/lib/isc/symtab.c
+++ b/lib/isc/symtab.c
@@ -175,6 +175,7 @@ isc_symtab_define(isc_symtab_t *symtab, char *key, unsigned int type,
 
 	REQUIRE(VALID_SYMTAB(symtab));
 	REQUIRE(key != NULL);
+	REQUIRE(type != 0);
 
 	FIND(symtab, key, type, bucket, elt);