1*bf2c3715SXin Li #include "../Eigen/Core" 2*bf2c3715SXin Li 3*bf2c3715SXin Li using namespace Eigen; 4*bf2c3715SXin Li main(int argc,char **)5*bf2c3715SXin Liint main(int argc,char **) 6*bf2c3715SXin Li { 7*bf2c3715SXin Li VectorXf a(10), b(10); 8*bf2c3715SXin Li #ifdef EIGEN_SHOULD_FAIL_TO_BUILD 9*bf2c3715SXin Li b = argc>1 ? 2*a : -a; 10*bf2c3715SXin Li #else 11*bf2c3715SXin Li b = argc>1 ? 2*a : VectorXf(-a); 12*bf2c3715SXin Li #endif 13*bf2c3715SXin Li } 14