https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114494
--- Comment #6 from Akihiko Odaki <akihiko.odaki at daynix dot com> --- (In reply to Hans-Peter Nilsson from comment #5) > (In reply to Akihiko Odaki from comment #0) > > if (hlen < sizeof(struct ip_header)) { > > Is this a typo for "if (hlen > sizeof(struct ip_header)) {" which makes a > bot more sense to me? > > (I can't find it in Linux/drivers, so can't check "upstream" status.) It is not Linux but QEMU. Please look at: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=114494#c0