fix for bug#17543 Creating Event crash the server

this problem affects only debug builds

mysql-test/r/events.result

@@ -397,4 +397,24 @@ create table t_16 (s1 int);
 create trigger t_16_bi before insert on t_16 for each row create event  e_16 on schedule every 1 second do set @a=5;
 ERROR HY000: Explicit or implicit commit is not allowed in stored function or trigger.
 drop table t_16;
+create event white_space
+on schedule every 10 hour
+disable
+do
+select 1;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+event_schema	event_name	definer	event_body
+events_test	white_space	root@localhost	select 1
+drop event white_space;
+create event white_space on schedule every 10 hour disable do
+select 2;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+event_schema	event_name	definer	event_body
+events_test	white_space	root@localhost	select 2
+drop event white_space;
+create event white_space on schedule every 10 hour disable do	select 3;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+event_schema	event_name	definer	event_body
+events_test	white_space	root@localhost	select 3
+drop event white_space;
 drop database events_test;

mysql-test/t/events.test

@@ -374,6 +374,27 @@ drop table t_16;
 # end of test case
 ####
 
+#
+# START: BUG #17453: Creating Event crash the server
+#
+create event white_space
+on schedule every 10 hour
+disable
+do
+select 1;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+drop event white_space;
+create event white_space on schedule every 10 hour disable do
+select 2;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+drop event white_space;
+create event white_space on schedule every 10 hour disable do	select 3;
+select event_schema, event_name, definer, event_body from information_schema.events where event_name='white_space';
+drop event white_space;
+#
+# END:  BUG #17453: Creating Event crash the server
+#
+
 ##set global event_scheduler=1;
 ##select get_lock("test_lock3", 20);
 ##create event закачка on schedule every 10 hour do select get_lock("test_lock3", 20);

sql/event_timed.cc

@@ -117,7 +117,7 @@ event_timed::init_body(THD *thd)
     body.length--;
 
   //the first is always space which I cannot skip in the parser
-  DBUG_ASSERT(*body_begin == ' ');
+  DBUG_ASSERT(my_isspace(thd->variables.character_set_client, *body_begin));
   body.length--;
   body.str= strmake_root(root, (char *)body_begin + 1, body.length);