1 files changed, 24 insertions, 15 deletions

diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index 037bb60de3d..d5d8e6eeb1d 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -597,16 +597,19 @@ null:
   return 0;
 }
 
-void Item_func_concat_ws::split_sum_func(List<Item> &fields)
+void Item_func_concat_ws::split_sum_func(Item **ref_pointer_array,
+					 List<Item> &fields)
 {
   if (separator->with_sum_func && separator->type() != SUM_FUNC_ITEM)
-    separator->split_sum_func(fields);
+    separator->split_sum_func(ref_pointer_array, fields);
   else if (separator->used_tables() || separator->type() == SUM_FUNC_ITEM)
   {
+    uint el= fields.elements;
     fields.push_front(separator);
-    separator= new Item_ref((Item**) fields.head_ref(), 0, separator->name);
-  }  
-  Item_str_func::split_sum_func(fields);
+    ref_pointer_array[el]= separator;
+    separator= new Item_ref(ref_pointer_array + el, 0, separator->name);
+  }
+  Item_str_func::split_sum_func(ref_pointer_array, fields);
 }
 
 void Item_func_concat_ws::fix_length_and_dec()
@@ -1583,16 +1586,19 @@ void Item_func_elt::fix_length_and_dec()
 }
 
 
-void Item_func_elt::split_sum_func(List<Item> &fields)
+void Item_func_elt::split_sum_func(Item **ref_pointer_array,
+				   List<Item> &fields)
 {
   if (item->with_sum_func && item->type() != SUM_FUNC_ITEM)
-    item->split_sum_func(fields);
+    item->split_sum_func(ref_pointer_array, fields);
   else if (item->used_tables() || item->type() == SUM_FUNC_ITEM)
   {
+    uint el= fields.elements;
     fields.push_front(item);
-    item= new Item_ref((Item**) fields.head_ref(), 0, item->name);
-  }  
-  Item_str_func::split_sum_func(fields);
+    ref_pointer_array[el]= item;
+    item= new Item_ref(ref_pointer_array + el, 0, item->name);
+  }
+  Item_str_func::split_sum_func(ref_pointer_array, fields);
 }
 
 
@@ -1642,16 +1648,19 @@ String *Item_func_elt::val_str(String *str)
 }
 
 
-void Item_func_make_set::split_sum_func(List<Item> &fields)
+void Item_func_make_set::split_sum_func(Item **ref_pointer_array,
+					List<Item> &fields)
 {
   if (item->with_sum_func && item->type() != SUM_FUNC_ITEM)
-    item->split_sum_func(fields);
+    item->split_sum_func(ref_pointer_array, fields);
   else if (item->used_tables() || item->type() == SUM_FUNC_ITEM)
   {
+    uint el= fields.elements;
     fields.push_front(item);
-    item= new Item_ref((Item**) fields.head_ref(), 0, item->name);
-  }  
-  Item_str_func::split_sum_func(fields);
+    ref_pointer_array[el]= item;
+    item= new Item_ref(ref_pointer_array + el, 0, item->name);
+  }
+  Item_str_func::split_sum_func(ref_pointer_array, fields);
 }