[eigen] Shortcomings of asDiagonal()?

[Rhys Ulerich <rhys.ulerich@xxxxxxxxx>]

Hi all,

Should I expect the following to compile on 3.1.3?

#include <Eigen/Core>

int main()
{
    using namespace Eigen;

    // Works as expected
    Matrix3d A1;
    Matrix3d B1 = Matrix3d::Identity() * A1;
    Matrix3d C1 = Matrix3d::Identity() + A1;
    Matrix3d D1 = Matrix3d::Identity() - A1;

    // Does not work but I expect that it should
    Vector3d A2;
    Matrix3d B2 = Matrix3d::Identity() * A2.asDiagonal();
    Matrix3d C2 = Matrix3d::Identity() + A2.asDiagonal();
    Matrix3d D2 = Matrix3d::Identity() - A2.asDiagonal();

    return 0;
}

http://eigen.tuxfamily.org/bz/buglist.cgi?quicksearch=asDiagonal&list_id=2521
turns up nothing sounding similar but
http://eigen.tuxfamily.org/bz/show_bug.cgi?id=520 sounds similar in
spirit.  Should I file something with 520 as a prerequisite?

Thanks,
Rhys