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// Build don't link:
template <class T> struct A {
static void f();
};
template <class T> class B
{
friend class A<T>;
static int i; // ERROR - private
};
template <class T> class C
{
template <class U>
friend class A;
static int i;
};
template <class T>
void A<T>::f()
{
B<T>::i = 3;
C<T>::i = 3;
C<double>::i = 3;
B<double>::i = 3; // ERROR - member `i' is private
}
template void A<int>::f(); // ERROR - instantiated from here
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