> the OpenBSD project has not been very receptive in the past for bug reports, my sense of “this is probably fine, in practice”, and that if OpenBSD wants to weed out UB from their code base, then that’s a major project that should be done in a better way than me just being the middle man between the LLM and them for a patch here and there.

Part of the reason for all the UB in OpenBSD is that UBSan doesn't run on that platform. When I ported OpenBSD's httpd to Linux, I found that UBSan tripped before the server even came up because the config flag parsing shifts into the MSB of a signed integer.

I tried to contribute back a patch (just make the flag bitfield unsigned), but it was ignored. I think if UBSan ran natively on OpenBSD, then there would be a lot more of these patches, and the maintainers would have to take an official stance on whether they think these bugs matter.