It is fixed now:

 > This class should be virtual. The following variables are undefined : x

It would have been a good contender for the shorter bug.
Till

On Nov 8, 2007 11:11 AM, Jeremy Yallop <jeremy.yallop@ed.ac.uk> wrote:
>
> Jeremy Yallop wrote:
> > Till Varoquaux wrote:
> >> I have a  open bug in ocaml
> >> (http://caml.inria.fr/mantis/view.php?id=4321) that leads very simply
> >> to a segfault. The bug has been there for more than 4 months and is
> >> still marked as "new". Since it seems to be stalling I thought I might
> >> give it a gentle prod: what is the smallest possible ocaml program you
> >> can come up with that leads to a reproducible segfault without using
> >> FFI's Obj or Marshal. Here is mine:
> >>
> >> Scanf.sscanf  "\"%2$c%1$s\"" "%{%c%s%}" (fun f->Printf.printf f 'x'
> >> "xy");;
> >
> > I've already reported this (on the mailing list) and it's probably been
> > fixed by now, but in OCaml 3.10.0:
> >
> >      !((object val virtual x:'a method x=x end)#x)
>
> I made it shorter:
>
>         !((object val virtual x:_ method x=x end)#x)
>