From: matz@... (Yukihiro Matsumoto)
Date: 2003-08-28T21:35:39+09:00
Subject: Re: [BUG] Additional info regarding ruby-talk:66239

Hi,

In message "[BUG] Additional info regarding ruby-talk:66239"
    on 03/08/28, Idan Sofer <idan@idanso.dyndns.org> writes:

|I have recently encountered similiar problem as described on that thread, i.e., rb_bug
|triggered by the GC, as a result of RBasic->flags and RBasic->klass switching variables.
|
|I've been working to produce a simple and trivial code that can trigger the bug easily. the
|result is a small code snippet, the does the following:
|
|Launches 120 threads with a block, that does some 20,000 regexp matching. before
|the thread quits, it creates an additional thread with the same block
|
|thread_block= Proc.new do
|   1.upto(20000) do
|      "Hello"=~/bla/
|   end
|   Thread.new &thread_block
|end
|
|1.upto(120) do
|   Thread.new &thread_block
|end
|Thread.stop
|
|Under ruby-1.8.0(from debian's sid) the bug will be always be triggered after a few
|seconds of runtime.

It does not happen on the latest CVS.  I'm not sure whether we already
fixed it or just by coincidence.

							matz.