fluxbox just needs one extra #include to compile without problems with GCC 4.3. I've submitted the patch upstream, but you might want to add it to the current ebuild too.
Created attachment 144779 [details, diff]
added to gcc-porting overlay in the meantime.
Thanks for this, added to fluxbox-1.0.0-r2.
Why was this included as a version bump?
(In reply to comment #4)
> Why was this included as a version bump?
Because the maintainer was sleepy and not thinking clearly when considering this patch.