IV23000: CRASH IN MERGEDEFCONTRAINTS DURING COMPILATION

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APAR status

  • Closed as program error.

Error description

  • Error Message: SIGSEGV/GPF during the compilation of a method.
    .
    Stack Trace: The top of the C++ stack should have the following
    function:
    TR_ValuePropagation::mergeDefContraints
    The rest of the stack is unwalkable.
    .
    

Local fix

  • To workaround this issue, the method that was being compiled at
    the time of the crash should be excluded from compilation.
    This can be done using the following command line option:
    -Xjit:exclude={*<method signature>*}
    

Problem summary

  • Part of the mergeDefContraint function incorrectly attempted to
    reference a NULL pointer that is part of one of the internal
    data structures used to perform this optimization.
    

Problem conclusion

  • This defect will be fixed in:
    5.0.0 SR14
    6.0.1 SR4
    6.0.0 SR12
    7.0.0 SR3
    .
    The function has been altered so that the the NULL pointer can
    no longer be dereferneced.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV23000

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    600

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2012-06-13

  • Closed date

    2012-07-17

  • Last modified date

    2012-11-11

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

    IV22999

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

Fix information

  • Fixed component name

    JIT

  • Fixed component ID

    620700124

Applicable component levels

  • R600 PSY

       UP

  • R260 PSY

       UP



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Document information


More support for:

Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version:

6.0

Reference #:

IV23000

Modified date:

2012-11-11

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