--- asterisk-1.4.27.1.orig/main/astobj2.c	2009-10-06 03:16:36.000000000 +0200
+++ asterisk-1.4.27.1/main/astobj2.c	2009-12-03 20:54:12.000000000 +0100
@@ -236,7 +236,7 @@ int ao2_ref(void *user_data, const int d
 		/* for safety, zero-out the astobj2 header and also the
 		 * first word of the user-data, which we make sure is always
 		 * allocated. */
-		bzero(obj, sizeof(struct astobj2 *) + sizeof(void *) );
+		memset(obj, 0, sizeof(struct astobj2 *) + sizeof(void *) );
 		free(obj);
 	}