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LI78435: SIGNAL 11 IN XLCENTRY WITH OMP PARALLEL

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A signal 11 or internal compiler error is encountered in the
    xlcentry component of the compiler when compiling a specific
    sequence of OMP parallel loops such as the following:
    
    #pragma omp parallel for
    #pragma ibm independent_loop
    
    
       === TEST CASE ===
    
    void test()
    {
        double a[10];
    
        _Pragma("omp parallel")
        {
            _Pragma("omp for schedule(static)")
            _Pragma("ibm independent_loop")
            for (long i=0; i<10; i++) a[i] =  1.0 ;
        }
    }
    
    
    $ xlc_r -c -qsmp=omp test.c
    xlc_r: 1501-224 (S) fatal error in xlcentry: signal 11 received
    $
    
    OR
    
    $ xlc_r -c -qsmp=omp test.c
    xlc_r: 1501-230 (S) Internal compiler error; please contact your
    Service Representative. For more information visit:
    http://www.ibm.com/support/docview.wss?uid=swg21110810
    $
    

Local fix

  • N/A
    

Problem summary

  • USERS AFFECTED:
    Users who code both independent_loop and OMP pragams on the
    same loop are affected by this issue.
    
    PROBLEM DESCRIPTION:
    The compiler issues an internal compiler error when
    independent_loop pragma and OMP for pragma specified on the
    same loop.
    

Problem conclusion

  • The compiler has been fixed to accept both pragmas on the same
    loop.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI78435

  • Reported component name

    XL C/C++ FOR LI

  • Reported component ID

    5725C7300

  • Reported release

    D10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2015-02-25

  • Closed date

    2015-02-25

  • Last modified date

    2015-02-25

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

    LI78007

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

Fix information

  • Fixed component name

    XL C/C++ FOR LI

  • Fixed component ID

    5725C7300

Applicable component levels



Document information

More support for: XL C/C++ for Linux
Compiler

Software version: 13.1

Reference #: LI78435

Modified date: 25 February 2015