From b81c86f2288732b32eefd7ee8ea0ed310df76b5a Mon Sep 17 00:00:00 2001
From: Johan Wikman <johan.wikman@mariadb.com>
Date: Mon, 20 Mar 2017 11:20:09 +0200
Subject: [PATCH] A rules object may be empty

---
 server/modules/filter/cache/rules.cc | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/server/modules/filter/cache/rules.cc b/server/modules/filter/cache/rules.cc
index a9925476a..613ba08c6 100644
--- a/server/modules/filter/cache/rules.cc
+++ b/server/modules/filter/cache/rules.cc
@@ -1886,6 +1886,10 @@ static bool cache_rules_parse_json(CACHE_RULES *self, json_t *root)
                 MXS_ERROR("The cache rules object contains a `%s` key, but it is not an array.", KEY_USE);
             }
         }
+        else
+        {
+            parsed = true;
+        }
     }
 
     return parsed;