diff options
Diffstat (limited to 'sql/item_func.cc')
| -rw-r--r-- | sql/item_func.cc | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/sql/item_func.cc b/sql/item_func.cc index 0c22d4ce23c..a6d9ecc1d2f 100644 --- a/sql/item_func.cc +++ b/sql/item_func.cc @@ -4725,7 +4725,8 @@ update_hash(user_var_entry *entry, bool set_null, void *ptr, size_t length, length--; // Fix length change above entry->value[length]= 0; // Store end \0 } - memmove(entry->value, ptr, length); + if (length) + memmove(entry->value, ptr, length); if (type == DECIMAL_RESULT) ((my_decimal*)entry->value)->fix_buffer_pointer(); entry->length= length; |