Check attached build log.
Although it might be glibc-2.9 + gcc-4.3...
Created attachment 175548 [details]
seems this has been fixed. media-tv/mythtv-0.21_p19046 built okay :)
marking this p1. i'd like this fixed before gcc 4.3.2 is stable.
MythTV 0.20.2 isn't in the tree any longer and isn't supported any longer.