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PI87551: Incorrect behavior from DIVIDE or MULTIPLY statements including erroneous IGZ0061S division by zero messages

A fix is available

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APAR status

  • Closed as program error.

Error description

  • Incorrect behavior from DIVIDE or MULTIPLY statements including
    erroneous IGZ0061S division by zero messages
    

Local fix

Problem summary

  • ****************************************************************
    * USERS AFFECTED: All users of the IBM Automatic Binary        *
    *                 Optimizer (ABO) for z/OS, v1.2 and v1.3      *
    ****************************************************************
    * PROBLEM DESCRIPTION: In rare situations compiled programs    *
    *                      containing DIVIDE or MULTIPLY           *
    *                      statements may be optimized             *
    *                      incorrectly by ABO.                     *
    *                                                              *
    *                      In the rare cases where the problem is  *
    *                      present it is most likely to occur for  *
    *                      programs where :                        *
    *                      - the OPT(STD) or OPT(FULL) compiler    *
    *                      options were used to compile the input  *
    *                      program to ABO                          *
    *                      - the DIVIDE or MULTIPLY statements     *
    *                      were operating on large enough packed   *
    *                      or zoned decimal data items so the      *
    *                      operation was handled by the library    *
    *                      routine IGZCXDI or IGZCXMU in the       *
    *                      original compiled program               *
    *                                                              *
    *                      The symptom may be an unexpected        *
    *                      IGZ0061S division by zero message for   *
    *                      DIVIDE statements but other unexpected  *
    *                      behavior, abends and results are also   *
    *                      possible.                               *
    ****************************************************************
    * RECOMMENDATION: Apply provided service                       *
    ****************************************************************
    ABO was modified to correctly optimize these modules
    

Problem conclusion

  • The ABO optimized module now behaves correctly for these DIVIDE
    and MULTIPLY statements
    

Temporary fix

Comments

APAR Information

  • APAR number

    PI87551

  • Reported component name

    AUTO BINARY OPT

  • Reported component ID

    5697AB100

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2017-09-19

  • Closed date

    2017-09-21

  • Last modified date

    2017-10-02

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

    PI86989

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

    UI50505 UI50506

Modules/Macros

  • BOZBXITA BOZEXE1  BOZJIVP  BOZMSGE  BOZMSGK  BOZMSGT  BOZOBJ1
    BOZOPT   BOZRIDT  BOZSRC1
    

Fix information

  • Fixed component name

    AUTO BINARY OPT

  • Fixed component ID

    5697AB100

Applicable component levels

  • R130 PSY UI50505

       UP17/09/28 P F709

  • R13J PSY UI50506

       UP17/09/28 P F709

Fix is available

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Document Information

Modified date:
02 October 2017