So, the Register link for creating a bugs.mysql.com account still
doesn't work, so i'm filing a bug here:
Found in MySQl 5.6.17,
In sql/sp_head.cc:
bool sp_head::execute_function(THD *thd, Item **argp, uint argcount,
We have this code:
mysql_mutex_lock(&LOCK_thread_count);
q= global_query_id;
mysql_mutex_unlock(&LOCK_thread_count);
Which is incorrect.
It should at least by a my_atomic_load64 with the appropriate lock
things around it.
I haven't looked at if the mysql_bin.log.start_union_events(thd, q+1) is
correct or not.