Another friend declaration gives an error message which is incorrect.
template <class T, int C> class classA;
template <class T, int C, classA<T,C> &instanceA> class classB;
template <class T, int C> class classA
{
// error message on instantiation: too few template parameters (1 < 3)
template <classA &instanceA> friend class classB;
// incorrect error message: partial specialization claimed but not
apparent
// template <classA &instanceA> friend class classB<T,C,instanceA>;
private:
int for_use_by_classB;
};
template <class T, int C, classA<T,C> &instanceA> class classB
{
classB (int i) { instanceA.for_use_by_classB = i; }
};
// instantiation
template class classA<char,128>;
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