alignment_warning.cpp

#include <Eigen/Dense>


struct Base {
	
  virtual Base* clone() const = 0;
  
};

template <class T>
struct Derived : public Base {
  virtual Base* clone() const {
    Derived* d = new Derived<T>();
    return d;
  }
  
  
  Derived(T t = T())
    : Base(), t(t)
  {}
  
  T  t;
};

int main(int argc, char** argv)
{
  typedef Eigen::Matrix<double, 4, 4> Matrix;
  Derived<Matrix> derived;
  return 0;
}