IBM Support

IV44209: C++ STACK OVERFLOW IN JIT COMPILER'S STRUCTURAL ANALYSIS BECAUSE OF DEEP RECURSION

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APAR status

  • Closed as program error.

Error description

  • Error Message: N/A
    .
    Stack Trace: N/A
    .
    N/A
    

Local fix

  • Running with a larger OS stack size using the option -Xmso could
    work around this issue.
    

Problem summary

  • Internal testing has uncovered a functional bug with the JIT
    compiler's structural analysis; in some situations with very
    deep flow of control involving many basic blocks branching to
    each other in succession. The structural analysis algorithm was
    implemented using recursion and this led to a C++ stack overflow
    causing a crash during compilation.
    

Problem conclusion

  • This defect will be fixed in:
    7.0.0 SR5
    6.0.1 SR6
    .
    The JIT has been updated to eliminate the recursion in the
    structural analysis implementation.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV44209

  • Reported component name

    JIT

  • Reported component ID

    620700124

  • Reported release

    260

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-06-13

  • Closed date

    2013-06-13

  • Last modified date

    2013-06-13

  • 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

  • R260 PSY

       UP



Document information

More support for: Runtimes for Java Technology
Just In Time (JIT) Compiler

Software version: 260

Reference #: IV44209

Modified date: 13 June 2013