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| // RUN: %clang_cc1 -fsyntax-only -verify %s
// C++98 [class.friend]p7:
// C++11 [class.friend]p9:
// A name nominated by a friend declaration shall be accessible in
// the scope of the class containing the friend declaration.
// PR12328
// Simple, non-templated case.
namespace test0 {
class X {
void f(); // expected-note {{implicitly declared private here}}
};
class Y {
friend void X::f(); // expected-error {{friend function 'f' is a private member of 'test0::X'}}
};
}
// Templated but non-dependent.
namespace test1 {
class X {
void f(); // expected-note {{implicitly declared private here}}
};
template <class T> class Y {
friend void X::f(); // expected-error {{friend function 'f' is a private member of 'test1::X'}}
};
}
// Dependent but instantiated at the right type.
namespace test2 {
template <class T> class Y;
class X {
void f();
friend class Y<int>;
};
template <class T> class Y {
friend void X::f();
};
template class Y<int>;
}
// Dependent and instantiated at the wrong type.
namespace test3 {
template <class T> class Y;
class X {
void f(); // expected-note {{implicitly declared private here}}
friend class Y<int>;
};
template <class T> class Y {
friend void X::f(); // expected-error {{friend function 'f' is a private member of 'test3::X'}}
};
template class Y<float>; // expected-note {{in instantiation}}
}
// Dependent because dependently-scoped.
namespace test4 {
template <class T> class X {
void f();
};
template <class T> class Y {
friend void X<T>::f();
};
}
// Dependently-scoped, no friends.
namespace test5 {
template <class T> class X {
void f(); // expected-note {{implicitly declared private here}}
};
template <class T> class Y {
friend void X<T>::f(); // expected-error {{friend function 'f' is a private member of 'test5::X<int>'}}
};
template class Y<int>; // expected-note {{in instantiation}}
}
// Dependently-scoped, wrong friend.
namespace test6 {
template <class T> class Y;
template <class T> class X {
void f(); // expected-note {{implicitly declared private here}}
friend class Y<float>;
};
template <class T> class Y {
friend void X<T>::f(); // expected-error {{friend function 'f' is a private member of 'test6::X<int>'}}
};
template class Y<int>; // expected-note {{in instantiation}}
}
// Dependently-scoped, right friend.
namespace test7 {
template <class T> class Y;
template <class T> class X {
void f();
friend class Y<int>;
};
template <class T> class Y {
friend void X<T>::f();
};
template class Y<int>;
}
|