https://gcc.gnu.org/bugzilla/show_bug.cgi?id=45375
--- Comment #213 from Steffen Hau <steffen at hauihau dot de> --- Hi Jan, just a short Update: Firefox since version 30 as well as Thunderbird since version 31 both compile fine with LTO enabled without the need of any additional patches. The package size was reduced by 51% (firefox ~420MB -> ~207MB) and 59% (thunderbird ~480MB -> ~200MB). Both programs work as intended, no crashes or unexpected behaviour so far. Best regards, Steffen