Description:
When trying to repeat the bug http://bugs.mysql.com/bug.php?id=17354
the server crash when creating the event:

mysql> use test;
Database changed
mysql> drop table if exists t1;
Query OK, 0 rows affected, 1 warning (0.00 sec)

mysql> create table t1
    -> (
    ->     id int not null auto_increment primary key,
    ->     descr varchar(50),
    ->     TS timestamp
    -> );
Query OK, 0 rows affected (0.01 sec)

mysql> 
mysql> drop event if exists justonce;
Query OK, 1 row affected, 1 warning (0.01 sec)

mysql> 
mysql> create event justonce
    ->     on schedule at now() + interval 10 second
    ->     on completion preserve
    ->     do
    ->     insert into test.t1
    ->     set descr = 'from event justonce';

[New Thread 1099586480 (LWP 5370)]
060216 11:16:28 [Note] /home/miguel/dbs/5.1/libexec/mysqld: ready for connections.
Version: '5.1.7-beta-debug'  socket: '/tmp/mysql.sock'  port: 3306  Source distribution
[New Thread 1119861680 (LWP 5372)]
mysqld: event_timed.cc:120: void event_timed::init_body(THD*): Assertion `*body_begin == '
'' failed.

Program received signal SIGABRT, Aborted.
[Switching to Thread 1119861680 (LWP 5372)]
0xffffe410 in __kernel_vsyscall ()
(gdb) 

How to repeat:
See description.

A patch for this bug has been committed. After review, it may
be pushed to the relevant source trees for release in the next
version. You can access the patch from:

http://lists.mysql.com/commits/2737

Fixed in 5.1.7, existing in 5.1.6 . Crashes only in debug builds when the separator
between DO and the body is not a space :
CREATE EVENT some ON SCHEDULE AT NOW() DO   <--here we have a new line
begin select 1; end|

Noted in 5.1.7 changelog.

          Creating an event and using a whitespace character other than
          space following the <literal>DO</literal> keyword caused a
          server crash. (Bug #17453)