6 struct X { virtual void f() {} };  in f()  function
7 class Z { virtual void f() {} };  in f()  function in Z
8 class V : public X { virtual void f() {} };  in f()  function in V
9 class W : M, virtual V { public: virtual void f() {} };  in f()  function in W
14 struct C : B { virtual void f() {} } c;  in f()  function
16 struct X1 { virtual void f() {} };  in f()  function
21 struct A1 { virtual void f() {} };  in f()  function
22 struct B1 : virtual A1 { virtual void f() {} B1() {} } b1;  in f()  function
24 struct Z2 { virtual void f() {} };  in f()  function
25 struct Y2 { virtual void f() {} };  in f()  function
27 struct B2 : virtual A2 { B2() {} virtual void f() {} } b2;  in B2()  function