instrumentation on anonymous class.

Hi,

I encountered some problems when instrument the byte code of some anonymous
classes. The scenario is like the following,

in a function call, if it is not a static function, I want to record the
receiver of this function call, which usually be local variable 0.

So my code is like the following:

mv.visitVarInsn(ALOAD, 0);
mv.visitMethodInsn(INVOKESTATIC, "java/lang/System", "identityHashCode",
"(Ljava/lang/Object;)I");
mv.visitMethodInsn(INVOKESTATIC, "java/lang/Integer", "valueOf",
"(I)Ljava/lang/Integer;");
mv.visitMethodInsn(INVOKESTATIC, "OutputWrapper", "writeToFile",
"(Ljava/lang/Object;)V");

Is there any problem with this?

I got the following exception: Exception in thread "main"
java.lang.VerifyError: (class: Test$1, method: <init> signature: (I)V)
Expecting to find object/array on stack

Thank you guys.

Best

Zhongxian
-- 
Zhongxian Gu
http://wwwcsif.cs.ucdavis.edu/~gu/
Ph.D. Student in Computer Science, UC Davis
2249 Kemper Hall

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