FULL PRODUCT VERSION :
java version "1.4.2_01"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.
Java HotSpot(TM) Client VM (build 1.4.2_01-b06, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows 2000 [Version 5.00.2195]

A DESCRIPTION OF THE PROBLEM :
Hello,
We have our own implemetation of the JDWP protocol.
The JDWP command : IDSizes Command (7)
should return the size of the IDs during communication between JDI and the debugger agent.
We have implemented the JDWP with IDs size of 2 bytes or the SUN JDI implementation of the JDWP protocol only handles ID size of 4 or 8 bytes.
This cause us trouble to integrate our Virtual Machine in common IDE such as Sun On Studio that integrate Sun JDI implementation.

see workaround (correction for this bug)


REPRODUCIBILITY :
This bug can be reproduced always.

CUSTOMER SUBMITTED WORKAROUND :
we have tested a simple correction for this bug that works perfectly well.
the changes are made in com.sun.tools.jdi.PacketStream.java

    private long readID(int i)
    {
        switch (i) {
            case 8: return readLong();
            case 4: return (long)readInt();
            case 2: return (long)readShort();//<------- this was added
          default : return (long)readInt();
        }
    }

    void writeID(int i, long l)
    {
        switch (i) {
            case 8: writeLong(l);break;
            case 4: writeInt((int)l);break;
            case 2: writeShort((short)l);break;//<------- this was added
            default: writeInt((int)l);break;
        }
    }
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