http://gcc.gnu.org/bugzilla/show_bug.cgi?id=54728
--- Comment #9 from Jan Hubicka <hubicka at gcc dot gnu.org> 2012-12-21 14:16:09 UTC --- When writting symtab_real_symbol_p I made external nodes to not be real symbols unless they are explicitelly called or refereed. The reason is that we keep around virtual extenral functions for possible devirtualization and I did not want those symbol appear to refereed in lto-plugin symbol table. While this works well with lto-plugin symbol table output it does not fare well with the use in lto-symtab. I am testing patch to separate both predicates.
