http://gcc.gnu.org/bugzilla/show_bug.cgi?id=48246
--- Comment #12 from Jan Hubicka <hubicka at gcc dot gnu.org> 2011-06-18 10:53:08 UTC --- The problem should be fixed on mainline now. Concerning comment #8, the problem is that LTO files needs to be rebuild after every compiler update. Official release will bump up LTO file version number and diagnoze the issue as version mismatch. For sources pulled out of SVN you get this kind of errors.
