Can't make a stack from a continuation

[Neil Jerram]

address@hidden:~$ guile -q
guile> (version)
"1.6.4"
guile> (call-with-current-continuation make-stack)
Segmentation fault

This has been reported before, but it's still there.  I think it's 
something wrong with these lines from stacks.c, but I haven't 
investigated further yet.

  else if (SCM_CONTINUATIONP (obj))
    {
      offset = ((SCM_STACKITEM *) ((char *) SCM_CONTREGS (obj) + sizeof 
(scm_t_contregs))
                - SCM_BASE (obj));
#if SCM_STACK_GROWS_UP
      offset += SCM_CONTINUATION_LENGTH (obj);
#endif
      dframe = RELOC_FRAME (SCM_DFRAME (obj), offset);
    }

Regards,
        Neil