LI74430: MEMORY FAULT OCCURS

March 2009 Update for XL C/C++ for Linux, V10.1
October 2009 Update for XL C/C++ for Linux, V10.1
June 2011 Update for XL C/C++ for Linux, V10.1
XL C/C++ for Linux Fix Pack 8 (January 2014 Update) for 10.1
August 2010 Update for XL C/C++ for Linux, V10.1
January 2011 Update for XL C/C++ for Linux, V10.1
January 2012 Update for XL C/C++ for Linux, V10.1
July 2012 Update for XL C/C++ for Linux, V10.1

APAR status

• Closed as program error.

Error description

• Running the following test case in 64-bit causes memory fault:
  
  class aaaa {
  public:
    virtual int foo( ) = 0;
    virtual int bar(  ) { return foo(); }
  };
  class bbbb {
  public:
    virtual int nut(void) { return 0; }
  };
  static char * zzz[] = {"UNKNOWN"};
  class cccc :  public bbbb, public aaaa {
  public:
     cccc(void) {  }
     virtual int foo ( ) {return 0;}
  };
  int main(void) {
     cccc C;
     C.bar();
     return 0;
  }
  

Local fix

• N/A
  

Problem summary

• Users may be affected when using 64 bit mode in Linux with
  thunks that have static data that isn't referenced by the
  program.
  
  This may result in runtime segmentation violation caused by
  incorrect relocation generation.
  

Problem conclusion

• A fix will be developed, which will be applied to a future PTF.
  

Temporary fix

Comments

APAR Information

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

  LI74355

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

Fix information

• Fixed component name

  XL C/C++ RHEL52

• Fixed component ID

  5724U8310

Applicable component levels

• RA10 PSN LI74355

     UP06/09/13