As in gcc-3.2.1-r5.ebuild, the CXX variable of /etc/env.d/05gcc should be set to g++ and not gcc, as it breaks several ebuilds (kde while checking qt in configure for example).
Yeah, so I noticed. Guess I was on crack at the time.
Err, I did mention that I fixed this on CVS ? =)
Anyhow, sorry for the inconvenience, just fix it locally, or remerge gcc.
*** Bug 13528 has been marked as a duplicate of this bug. ***