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IV74498: CRASH IN INVALID EXCEPTION __DOTHROWV6 WITH QHOT=LEVEL=0

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When compiling with higher levels of optimization that enable
    -qhot=level=0 or higher, an invalid exception state occurs and a
    segmentation fault is seen in the exception handling
    __DoThrowV6() routine.
    
    The issue is sensitive to small code changes.
    

Local fix

  • NA
    

Problem summary

  • USERS AFFECTED:
    C++ users with exception handling code may be affected by this
    issue.
    
    PROBLEM DESCRIPTION:
    Users may see a segfault due to erroneous execution of a catch
    clause.
    

Problem conclusion

  • The fix was to recognize a particular internal form of the
    exception and catch it.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV74498

  • Reported component name

    XL C/C++ AIX

  • Reported component ID

    5724X1300

  • Reported release

    B10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-06-24

  • Closed date

    2015-09-29

  • Last modified date

    2015-09-29

  • 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

    XL C FOR AIX

  • Fixed component ID

    5724X1200

Applicable component levels

  • RB10 PSY

       UP



Document information

More support for: XL C for AIX

Software version: 11.1

Reference #: IV74498

Modified date: 29 September 2015