LI74399: MISMATCH AFTER RESTART FOR FRIEND DECLARATION

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

• Following error occurs when compiling with xlC.
  
  ------------------------------------------------------------
  "p3.cpp", line 16.25: 1540-1174 (S) The member "template void
  foo(B &)" is not declared as a template in its containing class
  definition.
  ------------------------------------------------------------
  
  ==========Testcase=============
  
  class B;
  
  template<class T1> struct A { void foo(B &b); };
  
  //  A<void> a;  // uncomments resolves the problem
  
  struct B {
      B(const A<int> &v);
      template<class T2> friend void A<T2>::foo(B &b);
  };
  
  template<> struct A<float> { A<int> _a; };
  
  template<class T3> void A<T3>::foo(B &b) { }
  
  int main() { }
  

Local fix

• Uncommneting A<void> a; resolves the problem (see test
  case)
  

Problem summary

• When attempting to define a friend member function from a
  template class the compiler produces the following error
  message: 1540-1174 (S) The member "template void foo (B &)" is
  not declared as a template in its containing class definition.
  
  User defining friend member functions from template classes
  out-of-line will be affected.
  

Problem conclusion

• The compiler was changed, now it properly sees the function from
  the dependent template class which is trying to be friended.
  

Temporary fix

Comments

APAR Information

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

  LI74309

• 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 LI74309

     UP06/09/13