Interesting to see that it's not working on 3.12.1. I ran into the same
problem with 4.00.0, also on amd64. I've been successfully using delimcc
(native) on a 32-bit machine with ocaml 3.12.0.

Based on this message from Oleg...

http://caml.inria.fr/pub/ml-archives/caml-list/2010/08/f7e9bbdc114f17b5714146abe1793278.en.html
... delimcc's native implementation should have been more portable, and it
was working for 3.12.0 on amd64. So likely a change brought in with 3.12.1
needs to be accommodated. This is a lot simpler to investigate than the
jump to 4.0! I might look at it today, depending on visiting company.

This is encouraging. Up to now I've been using my older machine rather than
dig into this problem.

 Tony


On Sat, Oct 13, 2012 at 7:06 AM, Christophe Raffalli <
christophe.raffalli@univ-savoie.fr> wrote:

> -----BEGIN PGP SIGNED MESSAGE-----
> Hash: SHA1
>
>
> Hello,
>
> I failed to have the delimited continuation library working
> with ocaml 3.12.1 on an amd64. bytecode is fine but
> native code segfaults one the provided regression test:
>
> raffalli@delli7:~/Caml/caml-shift$ make testd0opt
> /usr/bin/ocamlopt -o testd0opt -cclib -L. delimcc.cmxa  testd0.ml
> ./testd0opt
> make: *** [testd0opt] Erreur de segmentation
> make: *** Destruction du fichier « testd0opt »
>
> I tried both the provided header file and those of the
> original distribution.
>
> Did anyone succeded with delimcc on 3.12.1 or 4.0.X ?
>
> Cheers,
> Christophe
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.12 (GNU/Linux)
> Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org/
>
> iEYEARECAAYFAlB5Z0wACgkQi9jr/RgYAS7apwCeJ4u+Wd9ScYU4aLWzZMZBuchU
> beYAn3rjvAWfnVsEsLn9UR9HBxsVSrOd
> =Mozm
> -----END PGP SIGNATURE-----
>
> --
> Caml-list mailing list.  Subscription management and archives:
> https://sympa.inria.fr/sympa/arc/caml-list
> Beginner's list: http://groups.yahoo.com/group/ocaml_beginners
> Bug reports: http://caml.inria.fr/bin/caml-bugs
>