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PI79861: MQ: CSQDSMFC HAS ONE EXTRA #PRAGMA PACK(reset)

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Warning CCN3726 during compile because include CSQDSMFC has one
    extra #pragma pack.
    
    WARNING CCN3726 xxx.SCSQC370(CSQDSMFC):
     Attempting to pop an empty pack stack. Current pack may change.
    

Local fix

  • remove the extra #pragma pack(reset)
    

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of WebSphere MQ for z/OS Version 8 *
    *                 Release 0 Modification 0.                    *
    ****************************************************************
    * PROBLEM DESCRIPTION: When compiling using the IBM z/OS XL    *
    *                      C/C++ compiler V2R1 or higher, warning  *
    *                      message "CCN3726 Attempting to pop an   *
    *                      empty pack stack. Current pack may      *
    *                      change" may be issued.                  *
    ****************************************************************
    * RECOMMENDATION:                                              *
    ****************************************************************
    In z/OS V2R1, the z/OS XL C/C++ compiler introduced an
    additional warning message when more than one "#pragma
    pack(reset)" statement is found in sequence without a
    corresponding "#pragma pack(packed)" statement.
    
    Earlier versions of the z/OS XL C/C++ compiler would silently
    tolerate extraneous "#pragma pack" statements.
    
    As the IBM WebSphere MQ for z/OS CSQDSMFC.H header file contains
    an extraneous "#pragma pack" statement, attempting to compile a
    C program that includes the CSQDSMFC.H header file can result in
    a CCN3726 warning message being issued and compilation may
    return a non-zero RC.
    

Problem conclusion

  • The extraneous "#pragma pack(reset)" statement has been removed
    from the CSQDSMFC.H header file.
    000Y
    CSQDSMFC
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI79861

  • Reported component name

    WMQ Z/OS 8

  • Reported component ID

    5655W9700

  • Reported release

    000

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-04-13

  • Closed date

    2017-04-26

  • Last modified date

    2017-07-05

  • APAR is sysrouted FROM one or more of the following:

    PI74914

  • APAR is sysrouted TO one or more of the following:

    UI46721

Modules/Macros

  • CSQDSMFC
    

Fix information

  • Fixed component name

    WMQ Z/OS 8

  • Fixed component ID

    5655W9700

Applicable component levels

  • R000 PSY UI46721

       UP17/06/06 P F706

Fix is available

  • Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.

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Document Information

Modified date:
05 July 2017