[eigen] Assertion failure doing matA.col(??).noalias() = matB.row(??)

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The following code fails with an assertion (on g++ & MSC)

    MatrixXd matA, matB;
    matA = MatrixXd::Random(12,15);
    for(ptrdiff_t i=0;i<matA.rows();++i)
        matB.col(i).noalias() = matA.row(i); //<-- fails here!

Without the .noalias, it succeeds.  Is this by design?  It's confusing, at least...

--eamon@xxxxxxxxxxxx - Tel#:+31-6-15142163

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