http://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
--- Comment #193 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I am building firefox with -O3 and get no undefined symbols. Can you, please, relink with -Wl,--no-demangle --save-temps -fdump-ipa-all and try to look up the missing symbol in -lm.res file and if it not UNDEF there make somewhere available the dumps? If it is undefined there, it may be firefox bug..
