https://gcc.gnu.org/bugzilla/show_bug.cgi?id=113777
--- Comment #1 from Alexandre Oliva <aoliva at gcc dot gnu.org> --- Eric, I think this is yours. It fails while trying to add a reversed version of the hbool type to the context of the struct, but the struct doesn't have children yet, and add_child_die_after requires the context to have children already. The assumption that the original, unreversed type was introduced in the same context doesn't hold.