IZ97310: INCORRECT OUTPUT FROM A JAVA CHARACTER CONVERSION LOOP AFTER APPLYING APAR IZ85371

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APAR status

  • Closed as program error.

Error description

  • Error Message: Incorrect output reported from a Java application
    that converts UTF-16 to UTF8
    .
    Stack Trace: N/A
    .
    

Local fix

  • -Xjit:disableIdiomRecognition. Please note that the application
    may suffer performance degradation using this option.
    

Problem summary

  • The JIT optimizer optimizes loops that convert from UTF-16 to
    UTF-8 on some platforms to a single instruction. The JIT needs
    to update values of variables used within the loop as well, and
    in some cases was not updating the final value of a variable
    after the optimization is performed.
    

Problem conclusion

  • This defect will be fixed in:
    6.0.0 SR9 FP3
    6.0.1 GA FP1
    .
    The JIT optimizer has been fixed to update the values of all
    variables correctly after the optimization is applied on the
    loop.
    .
    To obtain the fix:
    Install build 20110405 or later
    

Temporary fix

Comments

APAR Information

  • APAR number

    IZ97310

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    YesHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2011-03-25

  • Closed date

    2011-04-06

  • Last modified date

    2011-12-20

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

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

    PM40726

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R600 PSN

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

6.0

Reference #:

IZ97310

Modified date:

2011-12-20

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