IZ35789: INTERNAL COMPILER ERROR IN XLCENTRY DUE TO FRONT END OPTIMIZATION.

January 2009 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
April 2009 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
July 2009 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
November 2010 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
March 2011 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
July 2011 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
December 2011 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
March 2012 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
January 2010 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
May 2010 PTF for XL C/C++ Enterprise Edition for AIX, V9.0
August 2010 PTF for XL C/C++ Enterprise Edition for AIX, V9.0

APAR status

• Closed as program error.

Error description

• The following test case causes the compiler to produce an
  internal compiler error with the following compile line:
  
  Compile line:
  xlC_r -O -qipa -c test.cpp
  
  ====Start of test.cpp=====
  typedef unsigned long   size_t;
  
  class RexxArray;
  class RexxString;
  class RexxObject;
  class RexxMessage;
  
  typedef RexxObject *  (RexxObject::*PCPPMC1)(RexxObject **,
  size_t);
  
  class RexxObject {
    public:
       RexxMessage *start(RexxObject **, size_t);
  };
  
  
   class RexxArray : public RexxObject {
    public:
     void * operator new(size_t, size_t, RexxObject **);
     inline void operator delete(void *, size_t, RexxObject **)
  {;}
     inline RexxArray() { ; };
   };
  
   class RexxMessage : public RexxObject {
    public:
     RexxMessage(RexxObject *, RexxObject *, RexxArray *);
     RexxObject   *start(RexxObject *);
   };
  
  
  RexxMessage *RexxObject::start(
      RexxObject **arguments,
      size_t       argCount)
  {
      RexxMessage *newMessage;
      RexxString  *newMsgName;
      RexxObject *message = arguments[0];
      newMessage = new RexxMessage(this, message, new (argCount -
  1, arguments + 1) RexxArray);
  
      return newMessage;
  }
  ======End of test.cpp=============
  

Local fix

• n/a
  

Problem summary

• C++ customers using exceptions and optimization with
  inlining on all platforms maybe affected by this issue.
  
  Compiler produces an internal compiler error under specific
  conditions where inlining removes a try / catch block.
  

Problem conclusion

• Fixed the exception handling state table
  functions so that when a try / catch block is removed the
  state table entries are not left in an invalid state.
  

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:

  LI74023 LI74059 IZ42389 IZ45602 LI74314 LI74564

Fix information

• Fixed component name

  XLC C++ AIX

• Fixed component ID

  5724S7100

Applicable component levels