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IV86709: INCORRECT LOOP TERMINATION IN JAVA

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    A loop fails to properly respect its termination condition, for
    example by running for an extra iteration. One particular
    consequence is that com/ibm/as400/access/AS400PackedDecimal may
    unexpectedly throw NumberFormatException. However, the symptoms
    may vary in general.
    

Local fix

  • The issue might be prevented by -Xjit:disableGLU, but it is
    possible that it could manifest via another optimization.
    

Problem summary

  • In certain circumstances, a loop analysis could make an
    incorrect conclusion about the termination condition of a loop
    with a particular rare pattern of intermediate code. Such an
    incorrect conclusion could cause later optimizations to
    incorrectly transform the loop.
    

Problem conclusion

  • The compiler has been modified so that this loop analysis will
    avoid making this kind of incorrect conclusion on loops of the
    problematic form.
    .
    This APAR will be fixed in the following Java Releases:
       8    SR3 FP10  (8.0.3.10)
       7    SR9 FP50  (7.0.9.50)
       7 R1 SR3 FP50  (7.1.3.50)
       6 R1 SR8 FP30  (6.1.8.30)
    .
    Contact your IBM Product's Service Team for these Service
    Refreshes and Fix Packs.
    For those running stand-alone, information about the available
    Service Refreshes and Fix Packs can be found at:
               https://www.ibm.com/developerworks/java/jdk/
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV86709

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    130

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt / Xsystem

  • Submitted date

    2016-07-07

  • Closed date

    2016-07-07

  • Last modified date

    2016-07-07

  • 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

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R130 PSY

       UP

  • R260 PSY

       UP

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Document Information

Modified date:
07 July 2016