IV46468: FATAL ERROR IN XLCENTRY

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You can track all active APARs for this component.

APAR status

  • Closed as program error.

Error description

  • The below test case generates internal compiler error in
    xlCentry and cores during compilation.
    ===== TESTCASE:
    $cat test.cpp
    template <typename T> class Foo { };
    namespace AA { class AnyX { }; }
    class AnyX : public AA::AnyX
    {
        class Placeholder : public AA::AnyX { };
        Foo<int> foo;
    };
    int main() { return 0; }
    $xlC -c test.cpp
    /usr/vacpp/bin/.orig/xlC: 1501-224 (S) fatal error in
    /usr/vacpp/exe/xlCentry: signal 11 received
    $
    

Local fix

  • Work around the problem by explicitly instantiating the template
    template <typename T> class Foo { };
    template class Foo<int>;   // this will prevent the problem
    namespace AA { class AnyX { }; }
    class AnyX : public AA::AnyX
    {
        class Placeholder : public AA::AnyX { };
        Foo<int> foo;
    };
    int main() { return 0; }
    

Problem summary

  • PROBLEM DESCRIPTION: Compiler enters loop with a class
    containing a data member which requires implicit instantiation
    when a member class has a base class with the same name as its
    containing class, but in a different namespace.
    
    USERS AFFECTED: The problem is very specific and will only be
    seen if a class A has a member class with a base class NS::A.
    After the definition of the member class, an implicit
    instantiation request may cause the compiler to enter a loop
    and crash.
    

Problem conclusion

  • The problem has been fixed.
    

Temporary fix

Comments

APAR Information

  • APAR number

    IV46468

  • 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

    2013-07-31

  • Closed date

    2013-09-18

  • Last modified date

    2013-09-20

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

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

    LI77635 LI77708

Fix information

  • Fixed component name

    XL C/C++ FOR AI

  • Fixed component ID

    5725C7200

Applicable component levels

  • RC10 PSY U861656

       UP C



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Document information


More support for:

XL C/C++ for AIX
Compiler

Software version:

12.1

Reference #:

IV46468

Modified date:

2013-09-20

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