IC67339: VB APPLICATION CRASHES WHEN GETTING A MESSAGE WITH CONVERT OPTION.

WebSphere MQ V7.0.1 for i5/OS Fix Pack 7.0.1.3
WebSphere MQ V7.0 Fix Pack 7.0.1.3

APAR status

• Closed as program error.

Error description

• VB applications using the ActiveX interface crash when
  attempting to get a message with the convert get message option.
  
  A trace of the VB 6 application shows a successful MQGET call
  returned with completion code zero and reason code zero.
  However, tracing stops abruptly upon making another MQGET call.
  
  0000785E 14:11:46.080701   4016.1           :       ---}
  zstMQGET
  (rc=OK)
  0000785F 14:11:46.080708   4016.1           :       --}
  MQGET
  (rc=OK)
  00007AB2 14:11:48.109133   4016.1           :       --{
  zstMQGET
  

Local fix

Problem summary

• ****************************************************************
  USERS AFFECTED:
  All Windows users of the ActiveX interface issuing MQGET calls
  with MQGMO_CONVERT on 7.0.1.0 or higher
  
  Platforms affected:
  Windows
  
  ****************************************************************
  PROBLEM SUMMARY:
  IC60879 added support in 7.0.1.0 to dynamically load an
  entry point from amqzst.dll, when performing an MQGET with
  convert, and then call it. Unfortunately the function signature
  was incorrectly specified, meaning that when the call was made
  the parameters did not align up. This resulted in a value being
  passed through actually being used as a pointer argument for a
  result, which causes a trap when that pointer is written to.
  

Problem conclusion

• The parameters passed to the function being called from
  AMQZST.DLL have been corrected, ensuring the call completes
  successfully and the trap does not occur.
  
  | MDVREGR 7.0-WS-MQ-Windows-RP0001   |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0001 |
  | MDVREGR 7.0.1-WS-MQ-Windows-FP0002 |
  
  ---------------------------------------------------------------
  The fix is targeted for delivery in the following PTFs:
  
                     v7.0
  Platform           Fix Pack 7.0.1.3
  --------           --------------------
  Windows            U200320
  
  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 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

• R701 PSY

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