jvmvrfy012 stack shape inconsistent ----------------------------------- Key: JASSIST-213 URL: https://issues.jboss.org/browse/JASSIST-213 Project: Javassist Issue Type: Bug Affects Versions: 3.16.1-GA Reporter: Diego Correnti Assignee: Shigeru Chiba Priority: Critical I get jvmvrfy012 stack shape inconsistent from this code: String method ="public Object evaluate(Object owner){return owner.toString().length() <= 10;}"; ClassPool pool = ClassPool.getDefault(); CtClass newClass = pool.makeClass("MyExpression"); newClass.setInterfaces(new CtClass[] {pool.get("magnum.commands.IExpression")}); CtMethod newmethod = CtNewMethod.make(method,newClass); newClass.addMethod(newmethod); Class<?> cClass = newClass.toClass(); Object snippet = cClass.newInstance(); public interface IExpression<TypeIn,TypeOut> { TypeOut evaluate(TypeIn owner); } Caused by: java.lang.VerifyError: JVMVRFY012 forma stack non coerente; classe=MyExpression, metodo=evaluate(Ljava/lang/Object;)Ljava/lang/Object;, pc=17 at java.lang.J9VMInternals.verifyImpl(Native Method) at java.lang.J9VMInternals.verify(J9VMInternals.java:72) at java.lang.J9VMInternals.initialize(J9VMInternals.java:134) at java.lang.J9VMInternals.newInstanceImpl(Native Method) at java.lang.Class.newInstance(Class.java:1325)