[eigen] operator= in SparseMatrixBase

[Jens Mueller <jens.k.mueller@xxxxxx>]

Hi,

I updated my trunk and hit an assertion. I'm getting the assertion "the
transpose operation is supposed to be handled in
SparseMatrix::operator=" defined on line 156 in SparseMatrixBase.h in
the assignGeneric method. And I don't get the rationale behind. The
assertion grantees that no transpose is needed saying the transpose is
handled in operator=. But in case a transpose is needed operator= just
passes the derived. I must be missing something.

Regards,
Jens