[eigen] Error when using the += operator on complex vectors

[Carlos Becker <carlosbecker@xxxxxxxxx>]

Hello, I am trying to do this:

fftData[0] += fftData[2].array() * fftData[1].array();

and I get the error:

THE_EVAL_EVALTO_FUNCTION_SHOULD_NEVER_BE_CALLED_FOR_DENSE_OBJECTS

fftData is an array of VectorXcf, is this a bug or is it warning me about something I should not do?

Thanks