http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59396
--- Comment #6 from pieter.agten at gmail dot com --- (In reply to Martin Nowak from comment #5) > (In reply to Georg-Johann Lay from comment #4) > > As the patch above has not been approved, it's unlikely this will ever get > > fixed... > > This should have a high priority, it makes LTO completely unusable on AVR. Isn't it just a warning?