https://gcc.gnu.org/bugzilla/show_bug.cgi?id=109752
--- Comment #7 from Jonathan Wakely <redi at gcc dot gnu.org> --- (In reply to Jonathan Wakely from comment #6) > Bisection using the original preprocessed code shows it started to ICE with > r13-4937 although maybe that just added an assertion to catch a latent bug. And bisection with Andrew's reduced version in comment 5 also finds r13-4937 so it's a good reduction.