1 files changed, 2 insertions, 1 deletions
diff --git a/sql/item_func.h b/sql/item_func.h
index 67049af81a2..514f93a39ea 100644
--- a/sql/item_func.h
+++ b/sql/item_func.h
@@ -378,7 +378,8 @@ public:
   Item_decimal_typecast(Item *a, int len, int dec) :Item_func(a)
   {
     decimals= dec;
-    max_length= my_decimal_precision_to_length(len, dec, unsigned_flag);
+    max_length= my_decimal_precision_to_length_no_truncation(len, dec,
+                                                             unsigned_flag);
   }
   String *val_str(String *str);
   double val_real();