diff options
Diffstat (limited to 'sql/item_strfunc.cc')
| -rw-r--r-- | sql/item_strfunc.cc | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/sql/item_strfunc.cc b/sql/item_strfunc.cc index d3493e1fad1..995627766c0 100644 --- a/sql/item_strfunc.cc +++ b/sql/item_strfunc.cc @@ -984,7 +984,10 @@ String *Item_func_left::val_str(String *str) return &my_empty_string; if (res->length() <= (uint) length) return res; - str_value.set(*res, 0, res->charpos(length)); + if (&str_value == res) + str_value.length(res->charpos(length)); + else + str_value.set(*res, 0, res->charpos(length)); return &str_value; } |