failtest/diagonal_nonconst_ctor_on_const_xpr.cpp

#include "../Eigen/Core"

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

using namespace Eigen;

void foo(CV_QUALIFIER Matrix3d &m) { Diagonal<Matrix3d> d(m); }

int main() {}