From: Paul Brannan <pbrannan@...>
Date: 2008-04-18T21:32:15+09:00
Subject: Re: ruby_init() and C call stack in Ruby 1.9

On Fri, Apr 18, 2008 at 10:57:14AM +0900, Suraj N. Kurapati wrote:
> As a result, you could use Ruby's C API from any C call stack
> without causing trouble for Ruby (since Ruby has its own private
> stack which is hidden and isolated from the user).

Ruby needs to know the location of the C stack so it can be marked,
otherwise extensions would break.

Paul