generate a compilation error when using ReturnByValue::coeff() or coeffRef(), instead of doing an infinite recursion
generate a compilation error when using ReturnByValue::coeff() or coeffRef(),
instead of doing an infinite recursion

ritsu1228/eigen,ritsu1228/eigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen,Zefz/eigen,toastedcrumpets/eigen,toastedcrumpets/eigen,ritsu1228/eigen,TSC21/Eigen,TSC21/Eigen,pasuka/eigen,Zefz/eigen,ritsu1228/eigen,pasuka/eigen,Zefz/eigen,ritsu1228/eigen,toastedcrumpets/eigen,TSC21/Eigen,toastedcrumpets/eigen,pasuka/eigen,TSC21/Eigen,ROCmSoftwarePlatform/hipeigen,Zefz/eigen,ROCmSoftwarePlatform/hipeigen,ROCmSoftwarePlatform/hipeigen,pasuka/eigen