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 9 using namespace Eigen; 10 call_ref(Ref<VectorXf> a)11void call_ref(Ref<VectorXf> a) { } 12 main()13int main() 14 { 15 VectorXf a(10); 16 CV_QUALIFIER VectorXf& ac(a); 17 call_ref(ac); 18 } 19