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LI75507: SIGNAL 11 IN IPA WHEN USING -O3

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • When compiling the following test case, the compiler is
    encountering an internal error:
    
    
    void foo(unsigned int zSize, int ySize, unsigned int
    flag[zSize][ySize]) {
      for (unsigned int z = 1; z < zSize; ++z) {
        for (int y = 1; y < ySize; ++y) {
          if (flag[z][1]) {
            double v = 0.0;
          }
        }
      }
    }
    
    
    > xlc -O3 -c test.c
    Calling signal handler...
    1586-494 (U) INTERNAL COMPILER ERROR: Signal 11.
    >
    

Local fix

  • Compile with a lower optimization level.
    

Problem summary

  • PROBLEM DESCRIPTION:
    Signedness mismatch in types given to the internal index offset
    calculation.
    
    USERS AFFECTED:
    Specific cases using IPA with unsigned loop iterators.
    

Problem conclusion

  • The defect was corrected.
    

Temporary fix

Comments

APAR Information

  • APAR number

    LI75507

  • Reported component name

    XL C/C++ AE BG/

  • Reported component ID

    5799HJE00

  • Reported release

    900

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2010-06-10

  • Closed date

    2010-07-28

  • Last modified date

    2010-07-28

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

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

    LI75687 LI76050

Fix information

  • Fixed component name

    XL C/C++ AE BG/

  • Fixed component ID

    5799HJE00

Applicable component levels

  • R900 PSY

       UP



Document information

More support for: XL C/C++
Compiler

Software version: 9.0

Reference #: LI75507

Modified date: 28 July 2010


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