Re: [Ikvm-developers] BadImageFormatException when deserializing Object with protected final field

[Christian P. <pro...@op...>]

Hi,

attached is a sample that reproduces the problem.
Compile with "ikvmc ikvm-bug.jar" and run the exe file.

Output:

Exception in thread "main" cli.System.InvalidProgramException:
        at java.io.ObjectStreamClass.setObjFieldValues(ObjectStreamClass.java:1233)
        at java.io.ObjectInputStream.defaultReadFields(ObjectInputStream.java:1972)
        at java.io.ObjectInputStream.readSerialData(ObjectInputStream.java:1888)
        at java.io.ObjectInputStream.readOrdinaryObject(ObjectInputStream.java:1774)
        at java.io.ObjectInputStream.readObject0(ObjectInputStream.java:1347)
        at java.io.ObjectInputStream.readObject(ObjectInputStream.java:369)
        at com.os.test.Main.main(Main.java:25)


If i change the visibility of "ChildControlList" to public, ikvmc does not generate a property for the field, and everything works fine.


Regards,

Christian



-----Ursprüngliche Nachricht-----
Von: daw...@gm... [mailto:daw...@gm...] Im Auftrag von Dawid Weiss
Gesendet: Dienstag, 6. September 2011 14:49
An: Christian Prochnow
Cc: ikv...@li...
Betreff: Re: [Ikvm-developers] BadImageFormatException when deserializing Object with protected final field

If you post a minimal example it'll be easier to verify what's wrong.

Dawid

On Tue, Sep 6, 2011 at 2:11 PM, Christian Prochnow
<pro...@op...> wrote:
> Hi,
>
>
>
> First of all .. thanks for this great project! It really helps us to get rid
> of some proprietary Java<->.NET bridge.
>
>
>
>
>
> Using the ikvmc compiler we receive a BadImageFormatException at runtime
> when an object, which contains a protected final field, is deserialized.
>
> It only occurs when the field got wrapped by a property.
>
> The deserialization code assumes that the property has a setter, but in fact
> only a getter has been emitted. This leads to invalid IL code that is being
> generated by the FastFieldReflector (a call without a Method).
>
>
>
> Is this a bug in ikvm ?
>
>
>
>
>
>
>
> Keep up the good work!
>
>
>
>
>
> Best regards,
>
>
>
> Christian
>
>
>
>
>
>
>
>
>
> i.A. Christian Prochnow
>
> Software Developer
>
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