item.h:

  Post review change in Item_ref::get_tmp_table_field (bug #11412).


sql/item.h:
  Post review change in Item_ref::get_tmp_table_field (bug #11412).

sql/item.h

@@ -1467,7 +1467,10 @@ public:
   Field *get_tmp_table_field()
   { return result_field ? result_field : (*ref)->get_tmp_table_field(); }
   Item *get_tmp_table_item(THD *thd)
-  { return (*ref)->get_tmp_table_item(thd); }
+  { 
+    return (result_field ? new Item_field(result_field) :
+                          (*ref)->get_tmp_table_item(thd));
+  }
   table_map used_tables() const		
   { 
     return depended_from ? OUTER_REF_TABLE_BIT : (*ref)->used_tables();