I have a question about "using" declarations.

Say I have three classes A, B, C:

class A {
public:
  A ();
  ~A ();

  void f ();

};

class B : public A {
public:
  B ();
  ~B ();

  void f (int b);
};

class C : public B {
public:
  C ();
  ~C ();

  using A::f;
  using B::f;
  void f (char c);
};

My question is, in class C, is the "using A::f;" declaration legal?  The
April '95 draft says:

"A using-declaration used as a member-declaration shall refer to a
member of a base class of the class being defined"

However, my compiler (MSVC++ v4.2B) whines about A not being a "direct"
base class of C.  Is a point where my compiler doesn't comply with the
standard?

-Alan
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