IV38509: Program abends compiled WITH -QPDF=LEVEL=2

Subscribe

You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • A program compiled with -qpdf=level=2 crashes
    at runtime.
    An error is identified in the compiler high level optimizer
    component.
    

Local fix

  • Change the source code
    
    From:
    
            bool node_has_local_access = false;
            for (size_t k=0; !node_has_local_access &&
    k<nodeName.size();
    k++)
            {
              if (pNode->node_.UnodeName().isEqualCI(nodeName[k]) ||
                  pNode->node_.UfastName().isEqualCI(nodeName[k]))
                node_has_local_access = true;
            }
    
    To
    
            bool node_has_local_access = false;
            for (size_t k=0; !node_has_local_access &&
    k<nodeName.size();
    k++)
            {
              if (pNode->node_.UnodeName().isEqualCI(nodeName[k]))
                node_has_local_access = true;
    
              if (pNode->node_.UfastName().isEqualCI(nodeName[k]))
                node_has_local_access = true;
            }
    

Problem summary

  • PROBLEM DESCRIPTION: Loop break incorrectly changes code flow
    exposed by -qpdf=level=2.
    
    USERS AFFECTED: C++ Program that compiles with -qpdf=level=2
    with the following loop form.
    
    bool condition = false;
    for (i=0; !condition && i<n; i++) {
    
    if ( call1() || call2() ) {
    condition=true;
    }
    }
    
    where both call1 and call2 return C++ objects by value.
    

Problem conclusion

  • The transformation causing the problem has been fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV38509

  • Reported component name

    XL C/C++ FOR AI

  • Reported component ID

    5725C7200

  • Reported release

    C10

  • Status

    CLOSED PER

  • PE

    NoPE

  • HIPER

    NoHIPER

  • Special Attention

    NoSpecatt

  • Submitted date

    2013-03-21

  • Closed date

    2013-06-17

  • Last modified date

    2013-06-17

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

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

    LI77579 LI77648

Fix information

  • Fixed component name

    XL C FOR AIX

  • Fixed component ID

    5725C7100

Applicable component levels

  • RC10 PSY U860046

       UP C



Rate this page:

(0 users)Average rating

Add comments

Document information


More support for:

XL C for AIX
Compiler

Software version:

12.1

Reference #:

IV38509

Modified date:

2013-06-17

Translate my page

Machine Translation

Content navigation