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15 lines
213 B
C++

#include "../Eigen/Core"
using namespace Eigen;
void call_ref(Ref<VectorXf> a) {}
int main() {
MatrixXf A(10, 10);
#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
call_ref(A.row(3));
#else
call_ref(A.col(3));
#endif
}