IBM Support

IV35526: DEBUG (FSD) DOES NOT WORK WITH SHARED LOCAL SLOTS IN THE BYTECOD ES IN SOME SITUATIONS

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APAR status

  • Closed as program error.

Error description

  • Error Message: NullPointerException
    .
    Stack Trace: java.lang.NullPointerException
            at java.lang.StringCoding.encode(StringCoding.java:622)
            at java.lang.String.getBytes(String.java:789)
            at java.io.FileInputStream.open(Native Method)
            at
    java.io.FileInputStream.<init>(FileInputStream.java:138)
            at
    java.io.FileInputStream.<init>(FileInputStream.java:97)
    .
    

Local fix

  • -Xjit:disableLocalCSE
    

Problem summary

  • Copy propagation of an auto slot that is shared between a
    reference and non reference local can result in unexpected
    null/zero values under FSD mode.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR4
    6.0.1 SR5
    6.0.0 SR13
    5.0.0 SR16
    .
    The JIT compiler was modified to avoid this problem.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV35526

  • Reported component name

    JAVA 5 JIT

  • Reported component ID

    620500124

  • Reported release

    500

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-01-18

  • Closed date

    2013-01-18

  • Last modified date

    2013-01-18

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

    IV35525

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

Fix information

  • Fixed component name

    JAVA 5 JIT

  • Fixed component ID

    620500124

Applicable component levels

  • R500 PSY

       UP

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Document Information

Modified date:
18 January 2013