friend class template

[Andrea Cacciarru]

Why
template <class T> class TemplateFriend; //Forward Class "Template"
Declaration

class A {
friend class TemplateFriend; //Any type T!
};

compile well with VC++ 7 but do not compile wit gcc or Comeau? What says
Standard about friend template class declaration?
I have searched some informations about it but without success.

Thanks in advance,
bye Andrea

 

[Martin Gieseking]

template <class T> class TemplateFriend; //Forward Class "Template"

class A {
friend class TemplateFriend; //Any type T!
};

compile well with VC++ 7 but do not compile wit gcc or Comeau? What says
Standard about friend template class declaration?

As far as I remember you must use a "friend template" with following syntax
to express that all template instances are friends of A:

class A {
template<class T>
friend class TemplateFriend;
};

So g++ and Comeau behave correctly and VC++ does not.

Martin