From 22de18ddcb97640f8f90c1c88d1dcd795ba1070f Mon Sep 17 00:00:00 2001
From: unknown <sanja@montyprogram.com>
Date: Fri, 7 Sep 2012 09:17:31 +0300
Subject: [PATCH] Fix of MDEV-511.

As far as we reopen tables so TABLE become invalid we should remove the pointer on cleanup().
---
 sql/item.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/sql/item.h b/sql/item.h
index 9bcb913d5c5..3136bb00394 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -3287,6 +3287,12 @@ public:
     else
       Item_direct_ref::save_in_result_field(no_conversions);
   }
+
+  void cleanup()
+  {
+    null_ref_table= NULL;
+    Item_direct_ref::cleanup();
+  }
 };