From: Shugo Maeda <shugo@...>
Date: 2001-09-03T18:12:12+09:00
Subject: [ruby-talk:20758] Re: eruby 0.9.6 doesn't work with ruby 1.7.1

Hi,

At Mon, 03 Sep 2001 17:25:30 +0900,
Shugo Maeda <shugo@ruby-lang.org> wrote:
> > |compiler and f are auto variables, so they should be protected
> > |against Ruby's conservative GC... but they seem not to be
> > |protected on Ruby 1.7. Why? > matz
> > 
> > Because compiler and f are NOT used after the GC point.  So that they
> > do not protect the objects.  Put volatile before the variables.
> 
> f is used after the GC point, and volatile can't protect f....

I found that &f was greater than rb_gc_stack_start. That's why f
was not protected.

Please apply this patch to eruby_main.c.
Could you add Init_stack() to intern.h or ruby.h? > matz
I think Init_stack() is necessary for ruby-embedded applications.

--- eruby_main.c	2001/08/06 09:42:47	1.28
+++ eruby_main.c	2001/09/03 08:51:13
@@ -527,7 +527,9 @@
     int state;
     char *out;
     int nout;
+    void Init_stack _((void*));
 
+    Init_stack(&code);
     code = eruby_load(eruby_filename, 0, &state);
     if (state && !rb_obj_is_kind_of(ruby_errinfo, rb_eSystemExit)) {
 	error_print(state, eruby_mode, code);

Shugo