From: Charles Oliver Nutter <headius@...>
Date: 2010-03-28T16:42:36+09:00
Subject: Re: A sure way to crash JRuby with Nokogiri, on Windows

Have you tried 1.5.0 builds? There have been a lot of fixes since 1.4.
ci.jruby.org/snapshots

(sorry for brevity sent from ps3)

- Charlie

On 3/27/10, Luc Heinrich <luc@honk-honk.com> wrote:
> Greetings,
>
> I'm sending this to Ruby-talk because I'm really not sure if the problem is
> in JRuby, Nokogiri or FFI.
>
> So, Using JRuby 1.4.0 (standard or complete) and Nokogiri-java 1.4.1, on
> Windows, try this:
>
> require "rubygems"
> require "nokogiri"
> xml = %Q(<?xml version="1.0" encoding="UTF-8"?>\n<foo bar="baz"/>\n)
> p Nokogiri::XML::Document.parse(xml)
>
> It works.
>
> Now try this:
>
> require "rubygems"
> require "nokogiri"
> th = Thread.new do
>     xml = %Q(<?xml version="1.0" encoding="UTF-8"?>\n<foo bar="baz"/>\n)
>     p Nokogiri::XML::Document.parse(xml)
> end
> th.join
>
> And see it crash with an EXCEPTION_ACCESS_VIOLATION. Here's the top of the
> stack:
>
> Stack: [0x03260000,0x032b0000],  sp=0x032aedb4,  free space=315k
> Native frames: (J=compiled Java code, j=interpreted, Vv=VM code, C=native
> code)
> C  [ntdll.dll+0x1b21a]
> C  [ntdll.dll+0x1046]
> j  com.kenai.jffi.Foreign.invokeVrI(J)I+0
> j  com.kenai.jffi.Invoker.invokeVrI(Lcom/kenai/jffi/Function;)I+8
> j
> org.jruby.ext.ffi.jffi.FastIntMethodZeroArg.call(Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/RubyModule;Ljava/lang/String;)Lorg/jruby/runtime/builtin/IRubyObject;+12
> J
> org.jruby.runtime.callsite.CachingCallSite.cacheAndCall(Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/RubyClass;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/builtin/IRubyObject;
> J
> org.jruby.runtime.callsite.CachingCallSite.call(Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/builtin/IRubyObject;)Lorg/jruby/runtime/builtin/IRubyObject;
> J
> org.jruby.ast.CallNoArgNode.interpret(Lorg/jruby/Ruby;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject;
> J
> org.jruby.ast.NewlineNode.interpret(Lorg/jruby/Ruby;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject;
> J
> org.jruby.ast.BlockNode.interpret(Lorg/jruby/Ruby;Lorg/jruby/runtime/ThreadContext;Lorg/jruby/runtime/builtin/IRubyObject;Lorg/jruby/runtime/Block;)Lorg/jruby/runtime/builtin/IRubyObject;
>
>
> This works just fine on OS X. Anyone has any idea what the problem is?
>
> --
> Luc Heinrich - luc@honk-honk.com
>
>
>