threed-beam-fea/ext/eigen-3.2.9/failtest/map_on_const_type_actually_const_1.cpp

#include "../Eigen/Core"

#ifdef EIGEN_SHOULD_FAIL_TO_BUILD
#define CV_QUALIFIER const
#else
#define CV_QUALIFIER
#endif

using namespace Eigen;

void foo(float *ptr){
    Map<CV_QUALIFIER Vector3f>(ptr).coeffRef(0) = 1.0f;
}

int main() {}