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From: "Stefan Monnier" <monnier+gnu/emacs@rum.cs.yale.edu>
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Subject: Re: Mac OS X: Rebuild Require after Security Update 2002-11-21
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> Steven Tamm <steventamm@mac.com> writes:
> 
> > [...]  P.S.  Andrew, is vfork fixed in Jaguar?  If so, we should
> > probably conditionalize its removal
> 
> The redirection of vfork to fork is there to solve a problem described
> by the following comment in src/s/darwin.h (see also the archive of
> emacs-pretest-bug).
> 
> /* The following solves the problem that Emacs hangs when evaluating
>    (make-comint "test0" "/nodir/nofile" nil "") when /nodir/nofile
>    does not exist.  */
> #undef HAVE_WORKING_VFORK
> #define vfork fork
> #define DONT_REOPEN_PTY
> 
> I just tried removing these three lines and Emacs (in fact OS X!) still
> hangs when evaluating that expression.

Does it really freeze the kernel or just the UI or just Emacs ?
If it freezes the kernel, post it to bugtraq as a DoS issue and it
should get fixed within a few days.


	Stefan