I remember having a similar issue. Try blocking all gcc versions prior to 4.0. As for uninstalling the current 3.x version -- I don't know how you would remove it since you need the ebuild script that initially installed the current 3.x on your system to remove it safely. Have you updated your systems profile (not gcc profile) or upgraded portage itself perhaps?
- [gentoo-user] revdep-rebuild Vizo Allman
- Re: [gentoo-user] revdep-rebuild Saphirus Sage
- Re: [gentoo-user] revdep-rebuild Vizo Allman
- Re: [gentoo-user] revdep-rebuild Saphirus Sage
- Re: [gentoo-user] revdep-rebuild Vizo Allman
- Re: [gentoo-user] revdep-rebuild Richard Marzan
- Re: [gentoo-user] revdep-rebuild Neil Bothwick
- Re: [gentoo-user] revdep-rebuild Alan McKinnon
- Re: [gentoo-user] revdep-rebuild Norberto Bensa
- Re: [gentoo-user] revdep-rebuild Vizo Allman