PI14367: BINARY RETURNING INCORRECT BUFFER ADDRESS

Obtain the fix for this APAR.

APAR status

• Closed as program error.

Error description

• Compile the below  test case with xlC compiler, output from
  program showing the buffer address is incorrect.
  
  $cat test.cpp
  
  #include <iostream>
  class A {
  
  public:
   class B {
    static const unsigned char t[256];
   public:
    void doit();
   };
  
   class C {
    static const unsigned char t[256];
   public:
    void doit();
   };
  
  
  };
  
  const unsigned char A::B::t[256] = {};
  const unsigned char A::C::t[256] = {};
  
  template<const unsigned char* t>
  struct Doit {
  inline Doit() {
   std::cout << "Doit : t=" << ((void*)t) << std::endl;
  }
  };
  
  void A::B::doit() {
   std::cout << "A::B::doit t=" << ((void*)t) << std::endl;
   Doit<t>();
  }
  
  void A::C::doit() {
   std::cout << "A::C::doit t=" << ((void*)t) << std::endl;
   Doit<t>();
  }
  
  int main() {
   A::B b;
   A::C c;
  
   b.doit();
   c.doit();
  }
  
  $xlC -o test test.cpp
  
  ACTUAL OUTPUT:
  ./test
  A::B::doit t=19473D99
  Doit : t=19473D99
  A::C::doit t=19473E99
  Doit : t=19473D99
  
  EXPECTED OUTPUT:
  ./test
  A::B::doit t=19473D99
  Doit : t=19473D99
  A::C::doit t=19473E99
  Doit : t=19473E99
  
  The third and forth lines should be the same.
  

Local fix

• na
  

Problem summary

• ****************************************************************
  * USERS AFFECTED: Users of template functions with             *
  *                 specialized template function arguments      *
  *                 having no qualifier information.             *
  ****************************************************************
  * PROBLEM DESCRIPTION: The parser in xlC compiler had issue    *
  *                      in name lookup since the variables      *
  *                      did not fully generate the qualifier    *
  *                      information, which resulted in a        *
  *                      variable with same name but different   *
  *                      parent class to be used as the same     *
  *                      variable during runtime.                *
  ****************************************************************
  * RECOMMENDATION:                                              *
  ****************************************************************
  

Problem conclusion

• Apply provided service.
  

Temporary fix

Comments

APAR Information

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

  PI06469

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

Modules/Macros

• CCNEPP
  

Fix information

• Fixed component name

  C/C++ FOR MVS

• Fixed component ID

  56551210A

Applicable component levels

• R790 PSY UI16362

     UP14/04/26 P F404

Fix is available

• Select the PTF appropriate for your component level. You will be required to sign in. Distribution on physical media is not available in all countries.