1#include "../Eigen/Core"
2
3#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
4#define CV_QUALIFIER const
5#else
6#define CV_QUALIFIER
7#endif
8
9using namespace Eigen;
10
11void call_ref(Ref<VectorXf> a) { }
12
13int main()
14{
15  VectorXf a(10);
16  CV_QUALIFIER VectorXf& ac(a);
17  call_ref(ac);
18}
19