Bug #19309 Partitions: crash if double procedural alter
Submitted: 24 Apr 2006 20:17 Modified: 23 Jun 2006 6:27
Reporter: Peter Gulutzan Email Updates:
Status: Closed Impact on me:
Category:MySQL Server: Partitions Severity:S3 (Non-critical)
Version:5.1.10-beta-debug OS:Linux (SUSE 10.0)
Assigned to: Mikael Ronström CPU Architecture:Any

[24 Apr 2006 20:17] Peter Gulutzan
I create a partitioned MyISAM table.
I create a procedure which alters the table.
I call the procedure twice.

How to repeat:
mysql> create table tw (s1 int) partition by list (s1) (partition p1 values in (1));
Query OK, 0 rows affected (0.14 sec)

mysql> create procedure pw () alter table tw engine=myisam;
Query OK, 0 rows affected (0.00 sec)

mysql> call pw();
Query OK, 0 rows affected (0.11 sec)

mysql> call pw();
ERROR 2013 (HY000): Lost connection to MySQL server during query
[24 Apr 2006 20:32] Miguel Solorzano
Thank you for the bug report. Verified as reported:

060425 17:32:05 [Note] /home/miguel/dbs/5.1/libexec/mysqld: ready for connections.
Version: '5.1.10-beta-debug'  socket: '/tmp/mysql.sock'  port: 3306  Source distribution
[New Thread 1118682032 (LWP 5862)]

Program received signal SIGSEGV, Segmentation fault.
[Switching to Thread 1118682032 (LWP 5862)]
0x0840b98d in ha_partition::min_of_the_max_uint (this=0x92e7628, operator_func={__pfn = 0x1b1, __delta = 0}) at ha_partition.cc:5206
5206      uint min_of_the_max= ((*m_file)->*operator_func)();
[20 Jun 2006 11:38] Mikael Ronström
patch approved by Sergei Gluhov plus a verbal check with Monty that copying the
create_info was ok
[22 Jun 2006 7:23] Mikael Ronström
Patch will appear in 5.1.12
[23 Jun 2006 6:27] Jon Stephens
Thank you for your bug report. This issue has been committed to our
source repository of that product and will be incorporated into the
next release.

If necessary, you can access the source repository and build the latest
available version, including the bugfix, yourself. More information 
about accessing the source trees is available at

Additional info:

Documented bugfix in 5.1.12 changelog; closed.