[CLN-list] modular polynomials

Hi, using cl_UP_MI I get very strange effects that look like problems with the memory management (the contents of one polynomial is suddenly vanishing while operating on another for example). So far, I figured out that having the leading coefficient set to zero via set_coeff() causes trouble even if I call finalize(). The manual is kind of sparse on that topic so I am not quite sure whether this is a bug or a feature. But even when I try to avoid that case, call finalize everywhere, and only do assignments (hope they are safe ...), then polynomials aside from the ones involved in the operations change. I will investigate this case further but it would be helpful to know whether the cl_UP_MI has problems/bugs? Regards, Jens