0004046: Hessian serializer incorrectly serializes objects when field is overloaded

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Severity

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Date Submitted

Last Update

0004046

[Hessian]

major

always

05-22-10 19:55

Reporter

zluspai

View Status

public

Assigned To

Priority

normal

Resolution

open

Status

new

Product Version

4.0.7

Summary

0004046: Hessian serializer incorrectly serializes objects when field is overloaded

Description

I've found this bug when serializing an ant's BuildException through hessian. The test case:

import java.io.ByteArrayInputStream;

import org.apache.commons.io.output.ByteArrayOutputStream;
import org.apache.tools.ant.BuildException;

import com.caucho.hessian.io.Hessian2Input;
import com.caucho.hessian.io.Hessian2Output;

public class HessianSerializerBug {

    public static void main(String[] args) {
        try {
            ByteArrayOutputStream buf = new ByteArrayOutputStream();
            Hessian2Output out = new Hessian2Output(buf);

            BuildException ex = new BuildException();
            out.writeObject(ex);
            out.close();

            Hessian2Input in = new Hessian2Input(new ByteArrayInputStream(buf.toByteArray()));
            BuildException clone = (BuildException) in.readObject();
            in.close();
            clone.printStackTrace();
        } catch (Throwable ex) {
            ex.printStackTrace();
        }
    }

}

The output will show an infinite loop at line "clone.printStackTrace()". This happens because the BuildException class has two "cause" fields: one inherited from the Throwable base class, and other one is defined in BuildException itself. Before the serialization the "cause" value is in the Throwable class's field, after the serialization the "cause" will be in the BuildException's field.

Affects latest version, but detected in 3.1.6.

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Issue History
Date Modified	Username	Field	Change
05-22-10 19:55	zluspai	New Issue

Mantis 1.0.0rc3[^]

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