From djberg96 at gmail.com  Fri Sep  4 10:13:14 2009
From: djberg96 at gmail.com (Daniel Berger)
Date: Fri, 4 Sep 2009 07:13:14 -0700 (PDT)
Subject: [Pure-devel] Fwd: ruby 1.8.6 p287 and p383 crashing in
	WIN32OLE_EVENT.message_loop
In-Reply-To: <B2F9EE02-3FB9-4CB0-BCEF-F66C825CBE65@mac.com>
References: <FFF3B088-063D-4990-B1A0-23A880BD34CD@mac.com> 
	<ec8cce48-ace3-4e89-aadc-43dec09a990e@o9g2000prg.googlegroups.com> 
	<246303BB-D4FB-40CA-AC03-2501E3C4F03F@mac.com>
	<3b923bc5-00f1-4305-b4e1-318d7f3365ab@x25g2000prf.googlegroups.com>
	<CEDCB062-771C-46E0-B99C-CE97CF7AC66E@mac.com>
	<B2F9EE02-3FB9-4CB0-BCEF-F66C825CBE65@mac.com>
Message-ID: <1cb79642-03ec-4e3d-9665-515b4d48c98b@m3g2000pri.googlegroups.com>

FYI. I haven't had a chance to look at this yet.

Dan

---------- Forwarded message ----------
From: Chuck Remes <cremes.devl... at mac.com>
Date: Sep 2, 4:23?pm
Subject: ruby 1.8.6 p287 and p383 crashing in
WIN32OLE_EVENT.message_loop
To: ruby-talk-google


On Sep 2, 2009, at 4:58 PM, Chuck Remes wrote:





> On Sep 2, 2009, at 4:43 PM, Daniel Berger wrote:

>> <snip>

>>> It can't seem to load a few of its dependencies like "windows/com".

>>> 1. The gem doesn't have a dependency on the windows-api gem.

>>> 2. The windows-api gem, after installation, doesn't have a lot of ?
>>> the
>>> files that pr-win32ole wants to load.

>> There is no gem for pr-win32ole. All you should need to do is:

>> gem install windows-pr

>> That should install win32-api and windows-api automatically. It ?
>> should
>> then "just work" as long as RUBYOPT is set. If it doesn't, please ?
>> give
>> me a specific error you're getting.

> Well, I ran 'gem build pr-winole32.gemspec' so it was easy to install.

> I now have everything up and going. When I run my program, it ?
> crashes on a call to WIN32OLE_EVENT.message_loop.

> starting...
> C:/Ruby/lib/ruby/gems/1.8/gems/pr-win32ole-1.0.0/lib/pr/win32ole.rb:
> 701:in `[]=': index 8 out of string (IndexError)
> ? ? ? ?from C:/Ruby/lib/ruby/gems/1.8/gems/pr-win32ole-1.0.0/lib/pr/
> win32ole.rb:701:in `ole_val2variant'
> ? ? ? ?from C:/Ruby/lib/ruby/gems/1.8/gems/pr-win32ole-1.0.0/lib/pr/
> win32ole.rb:4481
> ? ? ? ?from (eval):3:in `call'
> ? ? ? ?from (eval):3:in `DispatchMessage'
> ? ? ? ?from C:/Ruby/lib/ruby/gems/1.8/gems/pr-win32ole-1.0.0/lib/pr/
> win32ole.rb:5034:in `ole_msg_loop'
> ? ? ? ?from C:/Ruby/lib/ruby/gems/1.8/gems/pr-win32ole-1.0.0/lib/pr/
> win32ole.rb:5039:in `message_loop'
> ? ? ? ?from //.host/Shared Folders/My Documents/NetBeansProjects/
> ChuckKit/lib/main.rb:165

> If that trace looks crappy, view it here: ?http://pastie.org/603650

Okay, dug into the pr-win32ole code and this is what I found.

Line 701 was trying to access index 8 of a string with only 4 ?
characters. Backing up the stack I looked at where it was passed in ?
from and see that the +pvarResult+ variable passed into the lambda had
?
the value "\n\000". ?The lambda in question is on line 4400.

I don't know this code well enough to say where that came from ?
originally, but that explains the IndexError anyway. It looks like the
?
code that operates on those strings assumes they are 16 characters ?
long. That assumption blew it up.

cr

From djberg96 at gmail.com  Sat Sep 12 15:25:50 2009
From: djberg96 at gmail.com (Daniel Berger)
Date: Sat, 12 Sep 2009 13:25:50 -0600
Subject: [Pure-devel] Fwd: ruby 1.8.6 p287 and p383 crashing in
	WIN32OLE_EVENT.message_loop
In-Reply-To: <aea95bc50909040746u744105f0o594779703483bb9b@mail.gmail.com>
References: <FFF3B088-063D-4990-B1A0-23A880BD34CD@mac.com>
	<ec8cce48-ace3-4e89-aadc-43dec09a990e@o9g2000prg.googlegroups.com>
	<246303BB-D4FB-40CA-AC03-2501E3C4F03F@mac.com>
	<3b923bc5-00f1-4305-b4e1-318d7f3365ab@x25g2000prf.googlegroups.com>
	<CEDCB062-771C-46E0-B99C-CE97CF7AC66E@mac.com>
	<B2F9EE02-3FB9-4CB0-BCEF-F66C825CBE65@mac.com>
	<1cb79642-03ec-4e3d-9665-515b4d48c98b@m3g2000pri.googlegroups.com>
	<aea95bc50909040746u744105f0o594779703483bb9b@mail.gmail.com>
Message-ID: <012901ca33de$d8059040$8810b0c0$@com>

Hi,

<snip>

> I guess the line #4480 and around
> 
>       if pvarResult
>          WIN32OLE.ole_val2variant(result,pvarResult)
>       end
> 
> should be
> 
>       if pvarResult
>          varResult = 0.chr * 16
>          WIN32OLE.ole_val2variant(result,varResult)
>          memcpy(pvarResult, varResult,16)
>       end

Fixed in trunk. Thanks!

Dan