Question regarding copyright assignment

[Antoni Boucher]

Hi.
I contribute to gcc outside of work, but I'm about to sign a new work
contract which contains a work ownership clause saying that I give the
ownership to the company of any work not listed in some appendix.

What exactly should I list to make sure my contributions to GCC are not
affected by this?
Do I need to do something more than this to make sure there are no
issues with the FSF copyright assignment?

Thanks.