==2761== Thread 10:
==2761== Conditional jump or move depends on uninitialised value(s)
==2761==    at 0x818F580: make_join_statistics(JOIN*, st_table_list*, Item*, st_dynamic_array*) (sql_select.cc:1850)
==2761==    by 0x818B705: JOIN::optimize() (sql_select.cc:578)