Queries executed by event scheduler are written to slow log incorrectly or not written at all

set @event_scheduler.save= @@global.event_scheduler;

set @log_queries_not_using_indexes.save= @@global.log_queries_not_using_indexes;

set @slow_query_log.save= @@global.slow_query_log;

set global event_scheduler= on;

set global slow_query_log= on;

set global log_queries_not_using_indexes= on;

--let $slowlog = `SELECT @@slow_query_log_file`

create table t1 (i int);

insert into t1 values (0),(0);

create event ev on schedule at CURRENT_TIMESTAMP + INTERVAL 1 second do update t1 set i=1;

sleep 2;

--echo # 

--echo # Queries not using indexes are logged, but time is off:

--echo #

--cat_file $slowlog

--echo

set global log_queries_not_using_indexes= off;

set global long_query_time=0.2;

set global event_scheduler=off;

set global event_scheduler=on;

--echo

--echo #

--echo # Slow queries are not logged at all:

--echo #

create event ev on schedule at CURRENT_TIMESTAMP + INTERVAL 1 second do update t1 set i=sleep(0.5);

sleep 2;

--cat_file $slowlog

--echo

drop table t1;

set global event_scheduler= @event_scheduler.save;

set global log_queries_not_using_indexes= @log_queries_not_using_indexes.save;

set global slow_query_log= @slow_query_log.save;

set global long_query_time= @@session.long_query_time;

/data/src/5.5-bug/sql/mysqld, Version: 5.5.54-MariaDB-debug (Source distribution). started with:

Tcp port: 16000  Unix socket: /data/src/5.5-bug/mysql-test/var/tmp/mysqld.1.sock

Time                 Id Command    Argument

# Time: 571004 12:33:04

# User@Host: root[root] @ localhost [localhost]

# Thread_id: 4  Schema: test  QC_hit: No

# Query_time: 11936127050132.482422  Lock_time: 0.002233  Rows_sent: 0  Rows_examined: 2

use test;

SET timestamp=11937608616784;

update t1 set i=1;