• evgen@moonbone.local's avatar
    Fix bug #14482 Wrongly applied optimization in resolve_const_item() caused · a4a3215a
    evgen@moonbone.local authored
    crash
    
    resolve_const_item() substitutes item which will evaluate to constant with
    equvalent constant item, basing on the item's result type. In this case
    subselect was resolved as constant, and resolve_const_item() was substituting
    it's result's Item_caches to Item_null. Later Item_cache's function was called
    for Item_null object, which caused server crash.
    
    resolve_const_item() now substitutes constants for items with 
    result_type == ROW_RESULT only for Item_rows.
    a4a3215a
select.result 68.2 KB