From: nobu.nokada@...
Date: 2003-06-05T17:24:32+09:00
Subject: Re: YAML problem

Hi,

At Thu, 5 Jun 2003 14:49:15 +0900,
why the lucky stiff wrote:
> > % ruby -ryaml -e 'a = []; 1000.times { a << {"a"=>"b","c"=>"d"} }; puts a.to_yaml'|ruby -ryaml -e 'YAML.load(STDIN)'
> > zsh: done                              ruby -ryaml -e  | 
> > zsh: segmentation fault (core dumped)  ruby -ryaml -e 'YAML.load(STDIN)'
> 
> Marshal had the same problem years ago (see [ruby-dev:8067]).  I used
> Matz' fix in [ruby-dev:8068].
> 
> This appeared to be a problem with GC nodes being used in rb_hash_aset.
> I don't understand, since rb_ary_store didn't experience the same problems.  
> Matz knows these secrets.

Seems that porinters to local variables would be stored in
parser and left staying.  This will cause GC crashed.

And I guess volatile `hash' might be unnecessary, also one in
marshal_load().

-- 
Nobu Nakada