From: "Mauricio Fernández" <batsman.geo@...>
Date: 2003-03-02T03:47:37+09:00
Subject: Re: [BUG] gc_sweep(): unknown data type 48

On Sun, Mar 02, 2003 at 12:35:37AM +0900, nobu.nokada@softhome.net wrote:
> Hi,
> 
> At Sat, 1 Mar 2003 22:32:50 +0900,
> Mauricio Fern�ndez wrote:
> >                 `mv core co/core.#{Time.new.to_i}`
> 
> On Linux, writing 1 to /proc/sys/kernel/core_uses_pid makes
> core files unique.
> 
> > #5  0x4012fb88 in sigaction () from /lib/libc.so.6
> > #6  0x4008f9ba in rb_free_generic_ivar () from /usr/lib/libruby.so.1.6
> 
> It looks like a recently fixed bug.
> 
> Wed Feb 26 00:02:41 2003  Nobuyoshi Nakada  <nobu.nokada@softhome.net>
> 
> 	* string.c (rb_str_dup): set FL_EXIVAR when copied generic ivar.
> 	  (ruby-bugs-ja:PR#400)
> 
> 
> Do you make an instance variable of String object or mix a
> module which does such thing, and then add an instance variable
> again to a String duplicated from it?

You mean adding instance variables to a String? I don't do that...
And I only use String#dup once in my script (to duplicate $1) so...

Moreover something very strange is happening:

the bug happens about once every 10 runs when using the binary provided
by my distribution (Debian sid => 1.6.8 from Dec. 24 2002).
However it didn't happen in about ~1500 runs with a binary I compiled
myself (exactly same version, 1.6.8 Dec. 24) in order to get the
debugging info for you. 

AFAIK there's only three differences between my binary and the system's
one:
 * mine is built for i686-linux, Debian for i386-linux => perhaps there's 
   a bug in the gcc I'm using (gcc version 2.95.4 20011002 (Debian prerelease))
 * mine is installed in $HOME/usr; I built strscan for it and installed it there
 * Debian uses --enable-shared and I do not. Could this affect anything?

I cannot try a CVS snapshot until I get a predictable way to reproduce
the errors in the binaries I build...

-- 
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	Running Debian GNU/Linux Sid (unstable)
batsman dot geo at yahoo dot com

<stu> Stupid nick highlighting
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