1 files changed, 4 insertions, 3 deletions
diff --git a/sql/sql_base.cc b/sql/sql_base.cc
index 9a66b27a454..0210bf356d4 100644
--- a/sql/sql_base.cc
+++ b/sql/sql_base.cc
@@ -6010,9 +6010,10 @@ find_field_in_tables(THD *thd, Item_ident *item,
              sl=sl->outer_select())
         {
           Item *subs= sl->master_unit()->item;
-          if (subs->type() == Item::SUBSELECT_ITEM && 
-              ((Item_subselect*)subs)->substype() == Item_subselect::IN_SUBS &&
-              ((Item_in_subselect*)subs)->test_strategy(SUBS_SEMI_JOIN))
+          if (!subs ||
+              (subs->type() == Item::SUBSELECT_ITEM &&
+               ((Item_subselect*)subs)->substype() == Item_subselect::IN_SUBS &&
+               ((Item_in_subselect*)subs)->test_strategy(SUBS_SEMI_JOIN)))
           {
             continue;
           }