IV62158: INFINITE LOOP IN XLCENTRY WITH CONST QUALIFIED TEMPLATE TYPE

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 infinite loop is seen in the C++ front end xlCentry component
  of the compiler when a const qualified template type is used:
  
  
      === TEST CASE ===
  
  class Test {};
  
  template <class T>
  struct MyStruct {
      typedef void (T::*CallType)()const;
  };
  
  int main() {
  
      //MyStruct<Test>::CallType t;        // Works
      MyStruct<const Test>::CallType t;    // Infinite loop
      return 0;
  }
  

Local fix

• Remove const qualifier.
  

Problem summary

• PROBLEM DESCRIPTION:
  Infinite loop caused by typedef const template definition.
  
  USERS AFFECTED:
  Users with typedef'd templates which have CV qualifiers.
  

Problem conclusion

• An index variable that was not being updated was corrected, and
  users can now use CV qualifiers on typedef'd templates.
  

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:

  IV62267 IV68018 LI78455

Fix information

• Fixed component name

  XL C/C++ AIX

• Fixed component ID

  5724X1300

Applicable component levels

• RB10 PSY U867112

     UP C