fixed cyclic reference bug

mysql-test/r/subselect.result:
  test of cyclic reference
mysql-test/t/subselect.test:
  test of cyclic reference
sql/share/czech/errmsg.txt:
  new error message
sql/share/danish/errmsg.txt:
  new error message
sql/share/dutch/errmsg.txt:
  new error message
sql/share/english/errmsg.txt:
  new error message
sql/share/estonian/errmsg.txt:
  new error message
sql/share/french/errmsg.txt:
  new error message
sql/share/german/errmsg.txt:
  new error message
sql/share/greek/errmsg.txt:
  new error message
sql/share/hungarian/errmsg.txt:
  new error message
sql/share/italian/errmsg.txt:
  new error message
sql/share/japanese/errmsg.txt:
  new error message
sql/share/korean/errmsg.txt:
  new error message
sql/share/norwegian-ny/errmsg.txt:
  new error message
sql/share/norwegian/errmsg.txt:
  new error message
sql/share/polish/errmsg.txt:
  new error message
sql/share/portuguese/errmsg.txt:
  new error message
sql/share/romanian/errmsg.txt:
  new error message
sql/share/russian/errmsg.txt:
  new error message
sql/share/serbian/errmsg.txt:
  new error message
sql/share/slovak/errmsg.txt:
  new error message
sql/share/spanish/errmsg.txt:
  new error message
sql/share/swedish/errmsg.txt:
  new error message
sql/share/ukrainian/errmsg.txt:
  new error message

1 files changed, 9 insertions, 0 deletions

diff --git a/sql/item_func.h b/sql/item_func.h
index 1e1f2ba39fc..581809fc9cb 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -128,6 +128,7 @@ public:
   bool is_null() { (void) val_int(); return null_value; }
   friend class udf_handler;
   Field *tmp_table_field(TABLE *t_arg);
+  bool check_loop(uint id);
 };
 
 
@@ -606,6 +607,13 @@ public:
     const_item_cache&=  item->const_item();
     with_sum_func= with_sum_func || item->with_sum_func;
   }
+  bool check_loop(uint id)
+  {
+    DBUG_ENTER("Item_func_field::check_loop");
+    if (Item_int_func::check_loop(id))
+      DBUG_RETURN(1);
+    DBUG_RETURN(item->check_loop(id));
+  }
 };
 
 
@@ -971,6 +979,7 @@ public:
 
   bool fix_index();
   void init_search(bool no_order);
+  bool check_loop(uint id);
 };