In article <1118332736.063238.323.nullmailer / x31.priv.netlab.jp>,
  Yukihiro Matsumoto <matz / ruby-lang.org> writes:

> Hmm, I will look into Boehm GC later.  If you have any further
> information, I will appreciate very much.

Another possible problem is that rb_thread_restore_context and
stack_extend doesn't check the length of IA64 register stack.
-- 
Tanaka Akira