From: "Berger, Daniel" <Daniel.Berger@...>
Date: 2007-12-18T01:13:45+09:00
Subject: Re: What purpose does struct FRAME's tmp pointer serve?


> Brent Roman wrote:
> > 
> > 
> > The struct FRAME looks in Ruby 1.8.6 like this:  (excerpted from 
> > env.h)
> > 
> > extern struct FRAME {
> >     VALUE self;
> >     int argc;
> >     ID last_func;
> >     ID orig_func;
> >     VALUE last_class;
> >     struct FRAME *prev;
> >     struct FRAME *tmp;  //<--- what does this do?
> >     struct RNode *node;
> >     int iter;
> >     int flags;
> >     unsigned long uniq;
> > } *ruby_frame;
> > 
> > I cannot find any code that sets frame->tmp to any value 
> other than 0
> > 
> > I've only searched in core.  Is it used by some extension library?
> > Or, did I just overlook something?

> -----Original Message-----
> From: Brent Roman [mailto:brent@mbari.org] 
> Sent: Saturday, December 15, 2007 1:49 PM
> To: ruby-core@ruby-lang.org
> Subject: Re: What purpose does struct FRAME's tmp pointer serve?
> 
> 
> Never mind.  I dug a little deeper and answered my own question.

What was the answer?

Thanks,

Dan


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