ArrayIndexOutOfBoundsException at Frame.merge/MethodWriter.visitMaxs

Hi Guys,

I get an ArrayIndexOutOfBoundsException

java.lang.ArrayIndexOutOfBoundsException: 0
	at org.objectweb.asm.Frame.merge(Frame.java:1373)
	at org.objectweb.asm.Frame.merge(Frame.java:1350)
	at org.objectweb.asm.MethodWriter.visitMaxs(MethodWriter.java:1275)
	at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:487)
	at org.objectweb.asm.tree.MethodNode.accept(MethodNode.java:412)
	at org.objectweb.asm.tree.ClassNode.accept(ClassNode.java:275)
	at org.multiverse.stms.alpha.instrumentation.asm.AsmUtils.toBytecode(AsmUtils.java:472)
	at org.multiverse.stms.alpha.instrumentation.MultiverseJavaAgent$ImprovedAtomicMethodClassFileTransformer.doTransform(MultiverseJavaAgent.java:248)
	at org.multiverse.stms.alpha.instrumentation.asm.AbstractClassFileTransformer.transform(AbstractClassFileTransformer.java:62)
	at sun.instrument.TransformerManager.transform(TransformerManager.java:169)
	at sun.instrument.InstrumentationImpl.transform(InstrumentationImpl.java:365)
	at java.lang.ClassLoader.defineClass1(Native Method)
	at java.lang.ClassLoader.defineClass(ClassLoader.java:621)
	at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:124)
	at java.net.URLClassLoader.defineClass(URLClassLoader.java:260)
	at java.net.URLClassLoader.access$000(URLClassLoader.java:56)

when I generate the byte[] from some ClassNode. I use the ClassWriter with:

 public static byte[] toBytecode(ClassNode classNode) {
        if (classNode == null) {
            throw new NullPointerException();
        }

        ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
        classNode.accept(cw);
        return cw.toByteArray();
    }

So since the COMPUTE_FRAMES is used, so I would expect that all the
frame configuration is done for me.

So what could be causing this problem? I have a hard time figuring out
what is going wrong based on this Exception
so it would be very helpful if someone could point me to the right
direction. Once I understand what is going wrong,
I believe I can fix it myself.

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