1 files changed, 11 insertions, 2 deletions

diff --git a/sql/item.h b/sql/item.h
index a1c7f2e16f1..2ad85832747 100644
--- a/sql/item.h
+++ b/sql/item.h
@@ -419,6 +419,7 @@ public:
   int save_in_field(Field *field, bool no_conversions);
   bool basic_const_item() const { return 1; }
   Item *new_item() { return new Item_int(name,value,max_length); }
+  void cleanup() { fixed= 1; } // to privent drop fixed flag
   void print(String *str);
 };
 
@@ -906,6 +907,8 @@ public:
   enum Type type() const { return CACHE_ITEM; }
   static Item_cache* get_cache(Item_result type);
   table_map used_tables() const { return used_table_map; }
+  virtual void keep_array() {}
+  void cleanup() { fixed= 1; } // to privent drop fixed flag
   void print(String *str);
 };
 
@@ -958,8 +961,10 @@ class Item_cache_row: public Item_cache
 {
   Item_cache  **values;
   uint item_count;
+  bool save_array;
 public:
-  Item_cache_row(): Item_cache(), values(0), item_count(2) {}
+  Item_cache_row()
+    :Item_cache(), values(0), item_count(2), save_array(0) {}
   
   /*
     'allocate' used only in row transformer, to preallocate space for row 
@@ -1000,11 +1005,15 @@ public:
   bool check_cols(uint c);
   bool null_inside();
   void bring_value();
+  void keep_array() { save_array= 1; }
   void cleanup()
   {
     DBUG_ENTER("Item_cache_row::cleanup");
     Item_cache::cleanup();
-    values= 0;
+    if (save_array)
+      bzero(values, item_count*sizeof(Item**));
+    else
+      values= 0;
     DBUG_VOID_RETURN;
   }
 };