用于进行gcc测试

				// { dg-do assemble  }				// Caused an Internal Compiler Error.  Works now.				// prms-id: 3070								class Object {				public:				  virtual ~Object() {}				};								class BaseView {				protected:				  virtual void _forwardReceiveUpdate() = 0;				};												class View : public BaseView {				public:				  virtual ~View();				};								class TestViewBaseUpdate {				protected:				  virtual void _receiveUpdate();				};								class TestViewBase : public TestViewBaseUpdate, private View {				};								class TestView : public Object, public TestViewBase {				protected:				  virtual void _receiveUpdate();				};