[jboss-jira] [JBoss JIRA] Closed: (JASSIST-67) Strange Exception: Register x contains wrong type

Strange Exception: Register x contains wrong type ------------------------------------------------- Key: JASSIST-67 URL: https://jira.jboss.org/jira/browse/JASSIST-67 Project: Javassist Issue Type: Bug Affects Versions: 3.8.1.GA Environment: windowsXP Reporter: kobe valiant Assignee: Shigeru Chiba Priority: Blocker Fix For: 3.11.0.GA ClassPool pool = new ClassPool(true); CtClass ctc = pool.makeClass("my.Clazz"); StringBuilder sb = new StringBuilder("public void test() {"); for (int i = 0; i < 1000; i++) { sb.append("for(int i=0; i<10; i++) {}"); // line 1 // sb.append("for(int i=0; i<10; i++) {int j=i;}"); // line 2 } sb.append("}"); ctc.addMethod(CtNewMethod.make(sb.toString(), ctc)); ctc.toClass().newInstance(); the code above will throw an exception: Exception in thread "main" java.lang.VerifyError: (class: my/Clazz, method: test signature: ()V) Register 0 contains wrong type But if you comment the line 1 and uncomment the line 2, there will no exception at all.