Base: test the 'base' pointcut function:
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  before base("C3")
  before base("% C3::f(double)")
  void C1::f(double)
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  before base("C3")
  void C1::f()
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  before base("C3")
  before base("% C3::f(double)")
  void C2::f(double)
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  before base("C3")
  before base("% C3::f(X&)")
  void C2::f(X&)
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  before base("C3")
  void C2::x()
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  void C3::f()
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