DIV operator crashes in Item_func_int_div::val_int

Invalid read of size 8

at: Item_func_int_div::val_int (my_decimal.h:95)

by: Item::send (item.cc:6370)

by: Protocol::send_result_set_row (protocol.cc:900)

by: select_send::send_data (sql_class.cc:2448)

by: end_send (sql_select.cc:17355)

by: evaluate_join_record (sql_select.cc:16478)

by: sub_select (sql_select.cc:16259)

by: do_select (sql_select.cc:15929)

by: JOIN::exec_inner (sql_select.cc:2964)

by: JOIN::exec (sql_select.cc:2255)

by: mysql_select (sql_select.cc:3192)

by: handle_select (sql_select.cc:363)

by: execute_sqlcom_select (sql_parse.cc:5004)

by: mysql_execute_command (sql_parse.cc:2472)

by: mysql_parse (sql_parse.cc:6124)

by: dispatch_command (sql_parse.cc:1266)

by: do_handle_one_connection (sql_connect.cc:1267)

by: handle_one_connection (sql_connect.cc:1181)

by: start_thread (pthread_create.c:309)

by: clone (clone.S:115)

 Address 0x0 is not stack'd, malloc'd or (recently) free'd

drop table if exists c;

create table c(a int) select null;

select 1 div convert(a using utf8) from c;