item_strfunc.cc:

  We don't need to copy if start is 0, we can return the original value.


sql/item_strfunc.cc:
  We don't need to copy if start is 0, we can return the original value.

1 files changed, 2 insertions, 0 deletions

diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc
index 45b2b7455f9..f810afa3cfa 100644
--- a/sql/item_strfunc.cc
+++ b/sql/item_strfunc.cc
@@ -982,6 +982,8 @@ String *Item_func_right::val_str(String *str)
     never return a value more than "length".
   */
   uint start=res->numchars()-(uint) length;
+  if (!start)
+    return res;
   start=res->charpos(start);
   tmp_value.set(*res,start,res->length()-start);
   return &tmp_value;