Problems when deserializing array (like XSTR-185)

I hate to file what may be a duplicate bug (to XSTR-185), but unfortunately this bug tracking system does not allow me to re-open closed issues.

Below is an example of the problem that persists with deserializing arrays. In other code, I still get ClassNotFound exception. However, in the code below, which is very simple, it just doesn't work and reports a different exception.

Try:
1. Running Foo with the command line "to" to generate and persist XML. Then, run Foo with no args to reveal the bug.

import java.io.BufferedReader;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.PrintWriter;

import com.thoughtworks.xstream.XStream;

public class Foo
{
private int x = 100;

public void printX()

public static void toXML() throws Exception
{
XStream xstream = new XStream();
Foo[] foos = new Foo[100];
for (int i=0; i<foos.length; i++)

String theXml = xstream.toXML(foos);
PrintWriter pw = new PrintWriter(new FileWriter("tmp.dat"));
pw.println(theXml);
pw.flush();
pw.close();
}

public static void fromXML() throws Exception
{
XStream xstream = new XStream();
BufferedReader reader = new BufferedReader(new FileReader("tmp.dat"));
String theXml = "";
while (reader.ready())

Foo[] f = (Foo[])xstream.fromXML(theXml);
for (int i=0; i<f.length; i++)

}

public static void main(String[] args) throws Exception
{
if (args.length>0 && args[0].equals("to"))

else

}
}