From: KOSAKI Motohiro <kosaki.motohiro@...>
Date: 2011-02-05T01:02:41+09:00
Subject: [ruby-core:35087] Re: [Ruby 1.9-Bug#4367][Open] Thread.kill segfaults when the object to be killed isn't a thread

2011/2/4 Andrew Grimm <redmine@ruby-lang.org>:
> Bug #4367: Thread.kill segfaults when the object to be killed isn't a thread
> http://redmine.ruby-lang.org/issues/show/4367
>
> Author: Andrew Grimm
> Status: Open, Priority: Normal
> ruby -v: ruby 1.9.3dev (2011-01-29 trunk 30720) [x86_64-darwin10.4.0]
>
> If something other than a thread is supplied to Thread.kill, a segfault occurs. For example, Thread.kill(nil) causes a segfault:
>
> Andrew-Grimms-MacBook-Pro:~ agrimm$ ruby
> Thread.kill(nil)
> -:1: [BUG] Segmentation fault
> ruby 1.9.3dev (2011-01-29 trunk 30720) [x86_64-darwin10.4.0]

Good catch!

Yes, current GetThreadPtr has no type check and can makes bad cast.
I'll fix it soon.