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