#include "../Eigen/Core"
#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
#define CV_QUALIFIER const
#else
#define CV_QUALIFIER
#endif
using namespace Eigen;
void foo(CV_QUALIFIER Matrix3d &m){
CwiseUnaryView<internal::scalar_real_ref_op<double>,Matrix3d> t(m);
}
int main() {}