Try-catch block injection

Hi,

I'm trying to do the following transformation based on bytecode injection:

startLabel:
foo...;
endLabel

into

try {
    startLabel:
    foo...;
    endLabel
} catch (VerifyError e) {
    //doSomething;
}

Currently, my code looks like this (raising a java.lang.ClassFormatError):

LabelNode startLabel = new LabelNode();
tempList.add(startLabel);
                   
LabelNode endLabel = new LabelNode();
tempList.add(endLabel);
                   
//catch block
int numberOfLocalVariables = 0;
Object[] localVariableTypes = new Object[0];
int numberOfStackElements = 0;
Object[] stackElementTypes = new Object[0];
tempList.add(new FrameNode(Opcodes.F_FULL, numberOfLocalVariables, 
localVariableTypes, numberOfStackElements, stackElementTypes));
tempList.add(new MethodInsnNode(Opcodes.INVOKESTATIC, 
logger,"testTryCatch", ("()V")));

list.insertBefore(currentInsnNode, tempList);
           
list.insert(new FrameNode(Opcodes.F_SAME, numberOfLocalVariables, 
localVariableTypes, numberOfStackElements, stackElementTypes));
tryCatchBlocks.add(new TryCatchBlockNode(startLabel, endLabel, endLabel, 
"java/lang/Throwable"));

Any suggestions?

Cheers
Nikolas

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