LI77868: TEMPLATE IS ALREADY DEFINED ERROR

XL C/C++ for Blue Gene/Q Fix Pack 12 (May 2015 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 14 (May 2016 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 15 (October 2017 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 7 (February 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 8 (May 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 9 (August 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 10 (November 2014 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 11 (February 2015 Update) for 12.1
XL C/C++ for Blue Gene/Q Fix Pack 13 (August 2015 Update) for 12.1

APAR status

• Closed as program error.

Error description

• In the September 2013 PTF for XL C/C++ for AIX, V12.1
  (12.1.0.5), a program with the following definitions may
  encounter compilation error.
  
  template <size_t SIZE>
  inline bsl::ostream& operator<<(bsl::ostream& os, const
  LevelPrinter<const char[SIZE]>& lp)
  {...}
  
  template <size_t SIZE>
  inline bsl::ostream& operator<<(bsl::ostream& os, const
  LevelPrinter<char[SIZE]>& lp)
  {...}
  
  
  xlC -c test.cpp
  "test.cpp", line 50323.22: 1540-0403 (S) "template <size_t
  SIZE> TEST::operator<<(bsl::ostream &, const LevelPrinter<char
  [SIZE]> &)" is already defined.
  "test.cpp", line 50315.22: 1540-0425 (I) "operator<<" is
  defined on line 50315 of "test.cpp".
  

Local fix

• N/A
  

Problem summary

• PROBLEM DESCRIPTION: template functions collide when argument
  an array of const vs non-const causing a compile error
  indicating the template function was already defined
  
  USERS AFFECTED: Programs with a template argument that is an
  array when one function is an array of const and one is not
  

Problem conclusion

• The problem is fixed.
  

Temporary fix

Comments

APAR Information

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

  IV50473

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

Fix information

• Fixed component name

  XL C/C++ FOR BG

• Fixed component ID

  5799AG100

Applicable component levels