From: Elias Athanasopoulos <elathan@...>
Date: 2003-12-14T00:02:27+09:00
Subject: Re: strange rb_gc_mark error

On Sat, Dec 13, 2003 at 10:11:12PM +0900, Yukihiro Matsumoto wrote:
> Hi,
> 
> In message "strange rb_gc_mark error"
>     on 03/12/13, Elias Athanasopoulos <elathan@phys.uoa.gr> writes:
> 
> |I have a pure C function, which may be called arbitrary 
> |sequential times. If I call any rb_* function inside, including
> |the simple rb_warn(), I get:
> |
> |BUG] rb_gc_mark(): unknown data type 0x28(0x89965b0) non object
> |ruby 1.8.0 (2003-08-04) [i586-linux]
> |
> |The error occures after a lot of calls; it reminds me the 
> |behaviour of a stack overflow, or something.
> 
> Show us whole program, if possible, to reproduce your error.

I will try, but it is a little bit hard because the C func is called
from a C++ method deeply inside a complex inheritance tree.

Things that I can verify now are:

(a) The C func is called with no problem 8000 times.
(b) The C func is called for 3000+ and segfaults if I put a
    simple rb_warn() inside. Ruby 1.8.0
(c) The C func is called for 6000+ and segfaults if I put a
    simple rb_warn() inside. Ruby 1.8.1 preview 3.

Regards,
-- 
University of Athens			I bet the human brain 
Physics Department				is a kludge --Marvin Minsky