mx2cc crashing because of print command. Am i doing something stupid or?

[wiebowParticipant]

This code makes mx2cc v0.009 crash. It happens because I added the line: print string(e._instance)

Monkey

Namespace test #Import "<std>" Using std.. Function Main( ) Local e:EntityManager = EntityManager.GetInstance() e.PrintPoo() print string(e._instance) End Function Class EntityManager Private Global _instance:EntityManager Public Function GetInstance:EntityManager() If Not _instance Then Return New EntityManager Return _instance End Function Method New() '' If _instance Then New Exception("cannot create instance of singleton: EntityManager") _instance = Self Self.Initialize() End Method Method Destroy() _instance = Null End Method Method Initialize() print "initializing" End Method Method PrintPoo() Print "poo" End Method End Class

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Namespace test   #Import "<std>"   Using std..   Function Main( )   Local e:EntityManager = EntityManager.GetInstance() e.PrintPoo()   print string(e._instance)   End Function     Class EntityManager   Private   Global _instance:EntityManager   Public   Function GetInstance:EntityManager()    If Not _instance Then Return New EntityManager    Return _instance End Function   Method New()    '' If _instance Then New Exception("cannot create instance of singleton: EntityManager")    _instance = Self    Self.Initialize() End Method   Method Destroy()    _instance = Null End Method   Method Initialize()    print "initializing" End Method   Method PrintPoo()    Print "poo" End Method   End Class

 

 

[wiebowParticipant]

Oh, this is where mx2cc keeps hanging:

Running command: ‘/home/wiebo/Monkey2/bin/mx2cc_linux makeapp -run -clean -target=desktop -config=debug bd.monkey2’
MX2CC V0.009

***** Building app ‘/home/wiebo/Monkey2/mystuff/boulderdash/bd.monkey2’ *****

Parsing…
Semanting…

 

[wiebowParticipant]

More info. When I kill the mx2cc process (it is using 100% CPU) , I get this output:

FAILURE: Build failed with an exception.

* Where:
Build file ‘/home/wiebo/Monkey2/mystuff/boulderdash/build.gradle’ line: 16

* What went wrong:
Execution failed for task ‘:build_project_debug’.
> Build project failed with exit code: 137

* Try:
Run with –stacktrace option to get the stack trace. Run with –info or –debug option to get more log output.

BUILD FAILED

[Mark SiblyKeymaster]

Nasty compiler bug!

Will fix, but String( e._instance ) will fail anyway as you can’t convert an object to a string.

 

 

[Mark SiblyKeymaster]

Also, the Exception class has been removed from the monkey module in the latest update, mainly because it can be done in ‘pure’ monkey so doesn’t need to be in the ‘core’ module.

I could add this back to ‘std’ but it doesn’t really do much, basically just stores the ‘msg:String’ ctor param in a field.

 

 

 

 

[wiebowParticipant]

A bug! OK. I was just playing around, trying to see which variations of a singleton I could create.

I think I need a new pull from the repository, because here Exception is still documented as being in monkey module.

[Matthew SmithParticipant]

Wiebo,

When your initialising your Singleton your also not storing your initialised instance:

Monkey

If Not _instance Then Return New EntityManager

1	If Not _instance Then Return New EntityManager

should be

Monkey

If Not _instance Then _instance = New EntityManager

1	If Not _instance Then _instance = New EntityManager

So in this instance the object may be Null anyway causing the exception.

[Mark SiblyKeymaster]

> When your initialising your Singleton your also not storing your initialised instance:

Actually, he is…

 

[wiebowParticipant]

The New() method sets the _instance field.

But don’t look at this code as production code It’s me fooling around and causing crashes.

Good to see you here, btw, Matthew

[Matthew SmithParticipant]

Woops! Too much c# for me ATM! Trying to find some time to have a play – work and family a bit busy currently!

Great to see you too buddy! Hope all well in your part of the world!

 

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