MySQL Bugs: #12926: Query crashes MySQL server

Bug #12926	Query crashes MySQL server
Submitted:	1 Sep 2005 11:38	Modified:	1 Sep 2005 12:14
Reporter:	Ritesh Nadhani	Email Updates:
Status:	Closed	Impact on me:	None
Category:	MySQL Server	Severity:	S2 (Serious)
Version:	5.0.10	OS:	Windows (Windows)
Assigned to:		CPU Architecture:	Any

Description:
Hello,

The following sequence of query seems to be crashing the mysql daemon.

Enter password: ****

Welcome to the MySQL monitor.  Commands end with ; or \g.

Your MySQL connection id is 1 to server version: 5.0.10a-beta-nt

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show tables from information_schema;

+---------------------------------------+

| Tables_in_information_schema          |

+---------------------------------------+

| SCHEMATA                              |

| TABLES                                |

| COLUMNS                               |

| CHARACTER_SETS                        |

| COLLATIONS                            |

| COLLATION_CHARACTER_SET_APPLICABILITY |

| ROUTINES                              |

| STATISTICS                            |

| VIEWS                                 |

| USER_PRIVILEGES                       |

| SCHEMA_PRIVILEGES                     |

| TABLE_PRIVILEGES                      |

| COLUMN_PRIVILEGES                     |

| TABLE_CONSTRAINTS                     |

| KEY_COLUMN_USAGE                      |

| TRIGGERS                              |

+---------------------------------------+

16 rows in set (0.00 sec)

mysql> use information_schema;

Database changed

mysql> select * from table_constraints;

ERROR 2013 (HY000): Lost connection to MySQL server during query

How to repeat:
execute:

show tables from information_schema;
use information_schema;
select * from table_constraints;

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
    http://www.mysql.com/doc/en/Installing_source_tree.html

Additional info:

c:\mysql\bin>mysql -uroot
Welcome to the MySQL monitor.  Commands end with ; or \g.
Your MySQL connection id is 1 to server version: 5.0.12-beta-nt

Type 'help;' or '\h' for help. Type '\c' to clear the buffer.

mysql> show tables from information_schema;
+---------------------------------------+
| Tables_in_information_schema          |
+---------------------------------------+
| SCHEMATA                              |
| TABLES                                |
| COLUMNS                               |
| CHARACTER_SETS                        |
| COLLATIONS                            |
| COLLATION_CHARACTER_SET_APPLICABILITY |
| ROUTINES                              |
| STATISTICS                            |
| VIEWS                                 |
| USER_PRIVILEGES                       |
| SCHEMA_PRIVILEGES                     |
| TABLE_PRIVILEGES                      |
| COLUMN_PRIVILEGES                     |
| TABLE_CONSTRAINTS                     |
| KEY_COLUMN_USAGE                      |
| TRIGGERS                              |
+---------------------------------------+
16 rows in set (0.05 sec)

mysql> use information_schema;
Database changed
mysql> select * from table_constraints;
+--------------------+-------------------+-----------------+--------------+---
| CONSTRAINT_CATALOG | CONSTRAINT_SCHEMA | CONSTRAINT_NAME | TABLE_SCHEMA | TA
+--------------------+-------------------+-----------------+--------------+---
| NULL               | db                | PRIMARY         | db           | te
| NULL               | db4               | PRIMARY         | db4          | te
| NULL               | db4               | PRIMARY         | db4          | te
| NULL               | mohedabin         | PRIMARY         | mohedabin    | el
| NULL               | mohedabio         | PRIMARY         | mohedabio    | el
| NULL               | mysql             | PRIMARY         | mysql        | co
| NULL               | mysql             | PRIMARY         | mysql        | db
| NULL               | mysql             | PRIMARY         | mysql        | fu
| NULL               | mysql             | PRIMARY         | mysql        | he
| NULL               | mysql             | name            | mysql        | he
| NULL               | mysql             | PRIMARY         | mysql        | he
| NULL               | mysql             | name            | mysql        | he
| NULL               | mysql             | PRIMARY         | mysql        | he
| NULL               | mysql             | PRIMARY         | mysql        | he
| NULL               | mysql             | name            | mysql        | he
| NULL               | mysql             | PRIMARY         | mysql        | ho
| NULL               | mysql             | PRIMARY         | mysql        | pr
| NULL               | mysql             | PRIMARY         | mysql        | pr
| NULL               | mysql             | PRIMARY         | mysql        | ta
| NULL               | mysql             | PRIMARY         | mysql        | ti
| NULL               | mysql             | PRIMARY         | mysql        | ti
| NULL               | mysql             | PRIMARY         | mysql        | ti
| NULL               | mysql             | PRIMARY         | mysql        | ti
| NULL               | mysql             | PRIMARY         | mysql        | ti
| NULL               | mysql             | PRIMARY         | mysql        | us
+--------------------+-------------------+-----------------+--------------+---
25 rows in set, 1 warning (0.95 sec)

mysql>