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 foo(float *ptr){ 12 Map<CV_QUALIFIER MatrixXf>(ptr, 1, 1).coeffRef(0,0) = 1.0f; 13} 14 15int main() {} 16