https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48724
--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> --- This no longer happens with recent Firefox builds, but I think it was rather fixed at Firefox buildsystem...
https://gcc.gnu.org/bugzilla/show_bug.cgi?id=48724
--- Comment #8 from Jan Hubicka <hubicka at gcc dot gnu.org> --- This no longer happens with recent Firefox builds, but I think it was rather fixed at Firefox buildsystem...