[SANDBOX-277] [javaflow] Uninitialized local variable related bug

• Type: Bug
• Status: Closed
• Priority: Critical
• Resolution: Fixed
• Component/s: Javaflow
• Assignee: Torsten Curdt
• Reporter: Fernando Petrola
• Created: 01/Feb/09 23:24
• Updated: 30/Dec/09 19:58
• Resolved: 30/Dec/09 19:58

Description

Executing this test class:

------------------------------------------------------------------------------------------------------------------------------------------------
package test;

import java.net.URL;

import org.apache.commons.javaflow.Continuation;
import org.apache.commons.javaflow.ContinuationClassLoader;

public class TestNullBug
{
public static class Test implements Runnable
{
public class NullLocalVariable
{
public void method1()

{ Integer result= null; if (result != 0) result= 1; }

}
public void run()

{ NullLocalVariable bug1= new NullLocalVariable(); }

}

public static void main(String[] args) throws Exception
{
ContinuationClassLoader classLoader= new ContinuationClassLoader(new URL[] {}, TestNullBug.Test.class.getClassLoader());
classLoader.addLoaderPackageRoot(TestNullBug.Test.class.getPackage().getName());
Runnable test= (Runnable) classLoader.loadClass(TestNullBug.Test.class.getName()).newInstance();
Continuation.startWith(test);
}
}
------------------------------------------------------------------------------------------------------------------------------------------------

I get the following stacktrace:

Exception in thread "main" java.lang.NoClassDefFoundError: null
at test.TestNullBug$Test.run(TestNullBug.java:23)
at org.apache.commons.javaflow.bytecode.StackRecorder.execute(StackRecorder.java:104)
at org.apache.commons.javaflow.Continuation.continueWith(Continuation.java:182)
at org.apache.commons.javaflow.Continuation.startWith(Continuation.java:136)
at org.apache.commons.javaflow.Continuation.startWith(Continuation.java:107)
at test.TestNullBug.main(TestNullBug.java:32)
Caused by: java.lang.ClassNotFoundException: null
at org.apache.commons.javaflow.ContinuationClassLoader.findClass(ContinuationClassLoader.java:419)
at org.apache.commons.javaflow.ContinuationClassLoader.loadClass(ContinuationClassLoader.java:306)
at java.lang.ClassLoader.loadClass(ClassLoader.java:268)
at java.lang.ClassLoader.loadClassInternal(ClassLoader.java:336)
... 6 more