Renaming the 3.0.5 ebuild built successfully in GCC 4.1.2 on amd64 (despite bug 246795, which I got with 3.0.5). The slotting seems wrong, however, as I had to un-install mysql++-2.3.2 before I could merge the built version into root. Reproducible: Always
*** This bug has been marked as a duplicate of bug 248979 ***