From: Petr Fischer <petr.fischer@...>
Date: 2002-01-08T02:38:38+09:00
Subject: addign class attr reader in C extension

Hi,

I have a simple test C extension class:

#include "ruby.h"

static VALUE plg2_init(VALUE self)
{
  VALUE str;
  str = rb_str_new2("plugin2 test string");
  rb_iv_set(self, "@str", str);
  rb_define_attr(str, "str", 1, 1); // <--

  return self;
}

VALUE cPlugin2;

void Init_plg2() {
  cPlugin2 = rb_define_class("Plugin2", rb_cObject);
  rb_define_method(cPlugin2, "initialize", plg2_init, 0);
}

In class Plugin2 is r/w attribute "str" only. But in this ruby code SEGFAULT
occurs:

require "plg2"

p = Plugin2.new <--- SEGFAULT
puts p.str

In C extension i call rb_define_attr(str, "str", 1, 1) from plg2_init
(initialize) function - is this correct?

Thanks, Petr