On Tue, Jul 02, 2019 at 08:29:34AM +0200, Reimar Döffinger wrote: > On 01.07.2019, at 01:12, Carl Eugen Hoyos <ceffm...@gmail.com> wrote: > > Undefined behaviour was reported in ticket #7981, attached patch tries > > to fix it. > > I suspect it makes more sense to check header_len against 0?
I suggest to check fc->header_idx against 0 because its simpler no array dereference, would have said that yesterday had my ISP functioned > And is the NULL pointer really undefined behaviour even if length is 0? AFAIK yes. (if thats not so alot of people would have said wrong things) i didnt double check it with the spec though now thx [...] -- Michael GnuPG fingerprint: 9FF2128B147EF6730BADF133611EC787040B0FAB "I am not trying to be anyone's saviour, I'm trying to think about the future and not be sad" - Elon Musk
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