https://gcc.gnu.org/bugzilla/show_bug.cgi?id=92924
--- Comment #25 from Jan Hubicka <hubicka at gcc dot gnu.org> --- I wonder if that is because of parallel updates. There is quite a lot of time between prunning and streaming out. If Firefox forks while other threads are running, it will mess up the streamed data quite badly. Is there way to stop other threads?
