https://gcc.gnu.org/bugzilla/show_bug.cgi?id=83299
--- Comment #1 from Marc Glisse <glisse at gcc dot gnu.org> --- As an implementation detail, the argument to POINTER_PLUS is always unsigned... (maintainers are in favor of changing that, but someone needs to do the work) Also, we now quickly simplify p-q to -i, which loses this information.
