[news.eclipse.tools.jdt] 3.1M7 - JDWP - Error when methodID == zero

[larseven@xxxxxxxxx (Lars Even)]

Hello,

I am debugging a simple application on a remote VM using Eclipse 3.1.0 M7. 
My VM is a modified version of Sun's KVM.  
I have also made some adjustments to the debug protocal (KDWP/JDWP).

My problem is the JDWP/KDWP specified "methodID" (see definition at the 
end of this message). Eclipse does not seem to agree that zero is a valid 
methodID.

Consider the following example

1. class Foo{
2. 
3.     public Foo(){ 
4. 	// Do something
5.     }
6. 
7.     public Method_1(){}
8.     public Method_2(){}
9. 
10.    public static void main(){ 
11.        new Foo();
12.    }
13. }  

I have set Eclipse to communicate with the VM through a KDWP-proxy-server. 
The KDWP-proxy-server loads the Foo-class and generates the following 
methodsIDs:

method name: Foo.<init>    methodID: 0
method name: Method_1      methodID: 1
method name: Method_2      methodID: 2
method name: main          methodID: 3

When I set a breakpoint at line 4, Eclipse sends an EventRequest 
JDWP-command containing the methodID "0". After having pressed resume, I 
get to the breakpoint, and the VM sends an Event JDWP-command. The 
methodID is also this time "0", but this causes an internal error in 
Eclipse. 


Unfortunately no details on this internal error is presented. 


Is this a bug?


Thanks, 
        Lars E.




*) JDWP-Specification MethodID:

Uniquely identifies a method in some class in the target VM. The methodID 
must uniquely identify the method within its class/interface or any of its 
subclasses/subinterfaces/implementors. A methodID is not necessarily 
unique on its own; it is always paired with a referenceTypeID to uniquely 
identify one method. The referenceTypeID can identify either the declaring 
type of the method or a subtype.
(http://codenewbie.com/documentation/j2sdk-1_5_0/guide/jpda/jdwp-spec.html)