https://gcc.gnu.org/bugzilla/show_bug.cgi?id=69580
--- Comment #6 from Jeffrey A. Law <law at redhat dot com> --- If you could pass it along to me privately, I can verify if it's the same issue or not easily (that's the nice things about a PARAM, I can just crank up the limiter and see what happens). I also happen to have gcc-4.9 and gcc-5 compilers handy to compare against. l...@redhat.com Thanks for taking the time to dig this stuff out and report the issues. We're using the FSM bits a lot more now and plan to rely on them more in the future. So shaking out these cases is important.