# Irc.rb **URL:** \ **Category:** IronRuby\ **Created:** [September 6, 2008, 2:30am UTC](https://www.ruby-forum.com/t/irc-rb/147854 "2008-09-06T02:30:53Z")\ **Posts on this page:** 3\ **Page:** 1
**Author:** ![KEKEKE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/50afbb/32.png) [@KEKEKE](https://www.ruby-forum.com/u/KEKEKE)\ **Post date:** [September 6, 2008, 2:30am UTC](https://www.ruby-forum.com/t/irc-rb/147854/1 "2008-09-06T02:30:53Z")
Hi, I’ve created an irc.rb (attached) which mimics IronPython’s pyc.py. It is failing on this line: Microsoft::Scripting::ScriptCode.save\_to\_assembly(outfile, codes.to\_array()) With the following exception… Any help would be greatly appreciated. The test file I’m trying to compile is also attached. I am building on revision 140. I have also tried with the Microsoft.Scripting and Microsoft.Scripting.Core dlls from IronPython with the same result. C:\work\ironruby\co\svn\trunk\build\release\>.\ir.exe irc.rb -target:dll -verbose test.rb Compiling C:\work\ironruby\co\svn\trunk\build\release\test.rb… Creating output file C:\work\ironruby\co\svn\trunk\build\release\test.dll… C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\NewExpression .cs:88:in `New': Value cannot be null. Parameter name: constructor (System::ArgumentNullException) from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\NewExpression .cs:83:in`New’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:294:in `DefaultVisitDynamicExpression' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:191:in`VisitNode’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:40:in `VisitNodes' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:108:in`Visit’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:264:in `DefaultVisitBlock' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:176:in`VisitNode’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:40:in `VisitNodes' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:108:in`Visit’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:264:in `DefaultVisitBlock' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:176:in`VisitNode’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:40:in `VisitNodes' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:108:in`Visit’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:264:in `DefaultVisitBlock' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:176:in`VisitNode’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:40:in `VisitNodes' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:108:in`Visit’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:264:in `DefaultVisitBlock' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:176:in`VisitNode’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:272:in `Visit' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:374:in`DefaultVisitScopeExpression’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.Generated.cs:218:in `VisitNode' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Ast\ExpressionTre eVisitor.cs:189:in`Visit’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Actions\MatchCall er.Generated.cs:40:in `Call4' from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Actions\CallSite. cs:275:in`UpdateAndExecute’ from C:\work\ironruby\co\svn\trunk\src\Microsoft.Scripting.Core\Actions\UpdateDel egates.Generated.cs:52:in `Update4’ from :0 ---
**Author:** ![KEKEKE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/50afbb/32.png) [@KEKEKE](https://www.ruby-forum.com/u/KEKEKE)\ **Post date:** [September 6, 2008, 7:00am UTC](https://www.ruby-forum.com/t/irc-rb/147854/2 "2008-09-06T07:00:24Z")
Right. This is the error Dino overheard me talking about 🙂 As you can see from the stack trac, something seems to be broken in DLR. I’ll look at it and see whether I can come with a simple fix. Precompilation is currently P2 on our task list though, so I’m afraid any more complex work would need to wait until P1’s are done. Tomas ---
**Author:** ![KEKEKE](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/k/50afbb/32.png) [@KEKEKE](https://www.ruby-forum.com/u/KEKEKE)\ **Post date:** [September 6, 2008, 12:56pm UTC](https://www.ruby-forum.com/t/irc-rb/147854/3 "2008-09-06T12:56:06Z")
Thanks! I’ve also created a bug report: [http://rubyforge.org/tracker/index.php?func=detail&aid=21839&group\_id=4359&a](http://rubyforge.org/tracker/index.php?func=detail&aid=21839&group_id=4359&a) tid=16798 This includes the irc.rb which I think IronRuby will be interested in including in the IronRuby distribution as well… I’ll try to step through into this bug and understand what’s going on, although I have no clue what I’m looking at 🙂 Thanks,