IV25898: INTERNAL ERROR WITH PRIVATE BASE CASE

October 2012 PTF for XL C/C++ for AIX, V11.1
February 2013 PTF for XL C/C++ for AIX, V11.1
XL C/C++ for AIX Fix Pack 14 (May 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 15 (August 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 16 (November 2013 PTF) for 11.1
XL C/C++ for AIX Fix Pack 17 (February 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 18 (May 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 19 (August 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 20 (November 2014 PTF) for 11.1
XL C/C++ for AIX Fix Pack 21 (April 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 22 (September 2015 PTF) for 11.1
XL C/C++ for AIX Fix Pack 23 (March 2016 PTF) for 11.1
XL C/C++ for AIX Fix Pack 24 (September 2016 PTF) for 11.1

APAR status

• Closed as program error.

Error description

• An internal compiler error is encountered in a code scenario
  involving private inheritance and template usage.
  
  
       =====  TEST CASE  =====
  
  template <class MYTYPE>
  struct Myclass
  {
      explicit Myclass();
      template <class MYTYPE2>
      Myclass(Myclass<MYTYPE2>& alias, MYTYPE *ptr);
      MYTYPE *ptr() const;
  };
  
  struct Temp {};
  
  struct Class1 {};
  
  class  Class2 : private Class1 {};
  
  template <typename mytype>
  struct Class3 : Class2
  {
      Class3(Managed<Class1> params) {}
  };
  
  
  
  void test()
  {
      Managed<class3<Temp> > var;
      Managed<class2> sharedRequest(var, var.ptr());
  }
  
  
  $ xlC -c test.cpp
  xlC: 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

Problem summary

• PROBLEM DESCRIPTION:
  Internal compiler error from invalid private base member
  access.
  
  USERS AFFECTED:
  The problem would be seen if the compiler was attempting to
  generate a warning for an invalid access to a member of a
  private base class.
  

Problem conclusion

• The internal error has been fixed and all duplicate messages
  have also been corrected.
  

Temporary fix

Comments

APAR Information

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

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

  IV29507 IV31741 LI77144 LI77439

Fix information

• Fixed component name

  XL C/C++ AIX

• Fixed component ID

  5724X1300

Applicable component levels

• RB10 PSY U855106

     UP A