https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67030
--- Comment #15 from ktkachov at gcc dot gnu.org --- Yeah, that problem is fixed. Now bootstrap fails due to: gcc/vec.h:307:3: error: attempt to free a non-heap object 'intersecting' [-Werror=free-nonheap-object] ::free (v); ^ But that must be a different problem. Will analyze and file a separate PR...