llvm-project/llvm/test/Regression/C++Frontend/2003-08-31-StructLayout.cpp

// There is a HOLE in the derived2 object due to not wanting to place the two 
// baseclass instances at the same offset!

struct baseclass {};

class derived1 : public baseclass {
  void * NodePtr;
};

class derived2 : public baseclass {
  derived1 current;
};

derived2 RI;