// prms-id: 6610// There is a bug in vtable thunks with multiple/virtual inheritance.int fail = 1;struct B;struct A { virtual int f(const B*) = 0; int g(const B*); };int A::g(const B* t) { return f(t); }struct B : virtual A { B(); int f(const B*); B* B_this; };B::B() { if (g(this)) fail = 0; }int B::f(const B* t) { return t == this; }struct C : B { int f(const B*); int x; };int C::f(const B*) { return 0; }int main() { C c; return fail; }