debian-legal has concluded that in its current form the GNU FDL is *never* free.
If several clauses were fixed, it might become free when no Invariant Sections were used, but so far the FSF has shown no inclination to fix any of these clauses in a timely manner. Accordingly, it is time to remove all FDL-covered material from the GCC source and binary packages. This isn't hard, since it amounts to killing off everything in the 'info' targets. Debian-legal is currently working on a concise page explaining why the GNU FDL is non-free, but until then you can point complainers to the archives of debian-legal (little else has been discussed for the last year), and to my web page: http://home.twcny.rr.com/nerode/neroden/fdl.html -- Free replacement man pages and other documentation are a work currently in progress. I hope to have a site together to coordinate this work sometime soon.