Fixes are available
APAR status
Closed as program error.
Error description
An ActiveX application is called by another third party application. The application connects to a queue manager, performs some WebSphere MQ calls and disconnects correctly. The ActiveX application ends, then when the calling application ends a program crash can occur. WebSphere MQ traces show that the ActiveX application has terminated successfully and a dump of the crash may show that the crash originated from ~CMqOleApp. The same ActiveX application runs without error when using a WebSphere MQ Client for Windows Version 7.0.1
Local fix
Problem summary
**************************************************************** USERS AFFECTED: WebSphere MQ 7.1 and 7.5 users who are using WebSphere MQ Automation Classes for ActiveX (mqax200.dll) Platforms affected: Windows **************************************************************** PROBLEM SUMMARY: One of the destructors of MQAX200.dll frees the pointer to the control block and then accesses the same pointer as part of clean up causing access violation. This NULL pointer dereferencing caused the ActiveX application to crash while ending the application.
Problem conclusion
The code is modified such that the destructor completes all the clean up first and then the pointer to control block is freed, such that the null pointer is not dereferenced --------------------------------------------------------------- The fix is targeted for delivery in the following: v7.1 Platform Fix Pack 7.1.0.4 -------- -------------------- Windows 7.1.0.4 Version v7.5 -------- -------------------- Fix available in: 7.5.0.3 The latest available maintenance can be obtained from 'WebSphere MQ Recommended Fixes' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006037 If the maintenance level is not yet available information on its planned availability can be found in 'WebSphere MQ Planned Maintenance Release Dates' http://www-1.ibm.com/support/docview.wss?rs=171&uid=swg27006309 ---------------------------------------------------------------
Temporary fix
Comments
APAR Information
APAR number
IC92780
Reported component name
WMQ WINDOWS V7
Reported component ID
5724H7220
Reported release
710
Status
CLOSED PER
PE
NoPE
HIPER
NoHIPER
Special Attention
NoSpecatt
Submitted date
2013-06-04
Closed date
2013-07-23
Last modified date
2013-07-23
APAR is sysrouted FROM one or more of the following:
APAR is sysrouted TO one or more of the following:
Fix information
Fixed component name
WMQ WINDOWS V7
Fixed component ID
5724H7220
Applicable component levels
R710 PSY
UP
[{"Line of Business":{"code":"LOB45","label":"Automation"},"Business Unit":{"code":"BU053","label":"Cloud & Data Platform"},"Product":{"code":"SSFKSJ","label":"WebSphere MQ"},"Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"7.1"}]
Document Information
Modified date:
23 September 2021