Name: ygR10224 Date: 02/20/2003


    The number of key-value mappings of java.util.IdentityHashMap
    (which returns by size() method) are different before and
    after serialization.
    
    See below for an example that reproduces this bug:
    -------------------- Test.java ----------------------
    import java.util.*;
    import java.io.*;

    public class Test {
        public static void main(String[] args) throws Exception {
            IdentityHashMap obj = new IdentityHashMap();
            obj.put("dummykey1", "dummyvalue1");
            obj.put("dummykey2", "dummyvalue2");
            obj.put("dummykey3", "dummyvalue3");

            FileOutputStream fos = new FileOutputStream("test.ser");
            ObjectOutputStream oos = new ObjectOutputStream(fos);
            oos.writeObject(obj);
            oos.flush();
            oos.close();

            FileInputStream fis = new FileInputStream("test.ser");
            ObjectInputStream ois = new ObjectInputStream(fis);
            IdentityHashMap nobj = (IdentityHashMap) ois.readObject();
            ois.close();

            if (obj.size() == nobj.size()) {
                System.out.println("PASSED");
            } else {
                System.out.println("FAILED");
                System.out.println("\"size\" value before and after " +
                        "serialization not equal (" + obj.size() + " != " +
                        nobj.size() + ").");
            }
        }
    }
    ------------------- example output ------------------
    java -showversion Test
    java version "1.4.2-beta"
    Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.2-beta-b16)
    Java HotSpot(TM) Client VM (build 1.4.2-beta-b16, mixed mode)

    FAILED
    "size" value before and after serialization not equal (3 != 6).
    ------------------- end of output -------------------
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