https://gcc.gnu.org/bugzilla/show_bug.cgi?id=66038
--- Comment #27 from Joshua Kinard <kumba at gentoo dot org> --- (In reply to Richard Biener from comment #26) > Don't hold your breath. Basically somebody who can reproduce it has to find > the root-cause and a fix. 4.9.3 works, and the problem appears specific to genmatch with the '--gimple' argument. I guess I can test to see if 5.0.0 is also affected, and then start diffing the genmatch.c files between working/non-working version to trace the problem down. That will be quicker than git bisecting on these machines (old SGI machines). Can't stay stuck on 4.9.x forever...