On Mon, Jul 24, 2023 at 01:14:36PM +0100, Stuart Henderson wrote: >> On an Intel amd64 machine with the latest snapshot (Jul 24th), net/unison >> dies for me on startup with the culprit being `caml_startup__code_begin`. >> I guess this is because O'Caml hasn't been updated sufficiently for IBT? [...] > Yes that's exactly it. > > I have just committed changes to ocaml ports to use USE_NOBTCFI=Yes to > disable branch tracking. They can be removed easily if the ocaml compiler > gains support for generating the landing pad nops.
Thanks, Stuart -- I can confirm that unison now works with your patches! [For anyone who wants to test this, you'll either need to wait for the next packages snapshot or build a unison package on a non-IBT machine, otherwise you end up in a bootstrapping problem where the existing ocaml compiler dies because of IBT and thus can't compile a new version.] Laurie
