[chef] RE: Re: RE: Re: RE: Re: Segmentation fault in gecode

[Alex S < >]

I'm ok with changing C code, wasn't clear how to reinstall the native extension.

I followed your instructions, not much information in log, so I also attached gdb callstack

http://pastie.org/1882344

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Date: Fri, 6 May 2011 15:05:13 -0700
From:
To:
Subject: [chef] Re: RE: Re: RE: Re: Segmentation fault in gecode

Sorry about the somewhat terse instructions. I knew it might be a pain to make the change at the c code level, but I wanted to give you what I could while I added a debug flag at the ruby layer. I've done so and uploaded version 0.0.8 of the gem.

If you install the new gem, and and change the variable DebugLogsOn to true, you will quite verbose debug information, and I should be able to recreate the inputs (and hopefully the bug) from that.

Use
% gem which dep_selector
to find the path of the gem. On my mac, I get
/Library/Ruby/Gems/1.8/gems/dep_selector-0.0.8/lib/dep_selector.rb

Edit the file <Insert your path here>/dep_selector-0.0.8/lib/dep_selector/gecode_wrapper.rb
On line 29, change the assignment of DebugLogsOn to true

Restart your server and run the test case.

I'd love it if you could send me the logs of the failure, starting at the text "Creating VersionProblem with args" and ending with the crash.

Thanks!

On Fri, May 6, 2011 at 11:33 AM, vodkin40 < "> > wrote:

Mark, can you provide more detailed instructions how to "recompile/install" dep_selector? I'm not an expert in gem. I tried to modify the .cpp file as you prescribed, but when I run "sudo gem install dep_selector", gem restores the original version of the file.

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Date: Thu, 5 May 2011 17:33:09 -0700
From: ">

To: ">

Subject: [chef] Re: RE: Re: Segmentation fault in gecode

One tactic would be edit ext/dep_gecode/dep_selector_to_gecode.cpp and un-comment the #define DEBUG line, and recompile/install. You'll get a whole pile of debug output that would be very helpful.

On Thu, May 5, 2011 at 4:55 PM, vodkin40 < "> > wrote:

List of installed gems: http://pastie.org/1869952

> From: ">
> Date: Thu, 5 May 2011 16:27:27 -0700
> To: ">
> Subject: [chef] Re: Segmentation fault in gecode

>
> On Thu, May 5, 2011 at 4:25 PM, AlexS < "> > wrote:
> > Any ideas what's happening? The system is Ubuntu 10.10, installed Gecode 3.5.0
> > using source tarball and manual build.
>
> Is Chef installed using gems? Can you provide the output of 'gem list'
> as well please?
>
> Bryan