From: Stanislav Sedov <stas@...>
Date: 2009-06-19T20:48:37+09:00
Subject: [ruby-core:23928] Re: Broken finalizers in ruby 1.8

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On Thu, 18 Jun 2009 22:33:44 +0900
Nobuyoshi Nakada <nobu@ruby-lang.org> mentioned:

> Hi,
>=20
> At Thu, 18 Jun 2009 18:30:35 +0900,
> Stanislav Sedov wrote in [ruby-core:23913]:
> > The problem can be verified using the following simple snipplet:
> >=20
> > % obj =3D "Test"
> > % handler =3D Proc.new { puts "Finalized!" }
> > % ObjectSpace.define_finalizer(obj, handler)
>=20
> That handler contains the reference to obj, so it should not be
> called.
>=20
> > If you run this code in ruby 1.8.7 before r21435 it prints 'Finalized!'.
>=20
> It's a bug.
>=20

Sorry, I made a error in the snipplet above. It should read as following:
% handler =3D Proc.new { puts "Finalized!" }
% obj =3D "Test"
% ObjectSpace.define_finalizer(obj, handler)

I suspect that when running this code the finalizer should be called,
as the 'handler' closure doesn't refer the obj object. However, it
doesn't get called.

Thanks!
--=20
Stanislav Sedov
ST4096-RIPE

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