Bug #22797 SQLTables does evil things with a MYSQL_RES

• Submitted: 28 Sep 2006 21:09
• Modified: 6 Jun 2007 13:57
• Reporter: Jim Winstead
• Status: Closed
• Category: Connector/ODBC
• Severity: S3 (Non-critical)
• Version: 3.51r116
• OS: Linux (Linux, x86_64)
• Assigned to: Jim Winstead
• Tags: SQLTables

[28 Sep 2006 21:09] Jim Winstead

Description:
The implementation of SQLTables() in C/ODBC 3.51 monkeys around with the internals of the
MYSQL_RES structure to place copies of hard-coded, statically-allocated data there. This
causes trouble with mysql_free_result() is then called on the structure that has been
monkeyed with.

How to repeat:
For one thing, t_sqltables() in my_test2.c fails. You can also see fun errors like "Error:
Freeing unallocated data at line 894, 'client.c'" in the test output.

Suggested fix:
Don't monkey with the internals of MYSQL_RES.

[16 May 2007 23:53] Jim Winstead

fix freeing of "fake" results

Attachment: bug22797.patch (application/octet-stream, text), 6.07 KiB.

[29 May 2007 21:53] Jim Winstead

The fix for this bug has been committed, and will be in 3.51.16.

[6 Jun 2007 13:57] MC Brown

A note has been added to the 3.51.16 changelog.