soot createclass tutorial

[Chris Pickett <chris.pickett@mail.mcgill.ca>]

Hi,

I'm trying to do the first lesson in the second half of the soot 
tutorial.  I can get CreateClassExample.java to compile with Sun's SDK 
1.4.1, but I can't get CreateClassExample.class to execute without 
throwing the following exception:

Exception in thread "main" java.lang.RuntimeException: tried to get 
nonexistent field!
       at soot.Scene.getField(Scene.java:329)
       at CreateClassExample.main(CreateClassExample.java:98)

In CreateClassExample:

// add "tmpRef = java.lang.System.out"
units.add(
 Jimple.v().newAssignStmt(
   tmpRef, Jimple.v().newStaticFieldRef(
     Scene.v().getField(
       "<java.lang.System: java.io.PrintStream out>"))));

In Scene.java:

public SootField getField(String fieldSignature)
   {
       SootField f = (SootField) fieldSignatureToField.get(fieldSignature);
       if (f != null)
           return f;

       throw new RuntimeException("tried to get nonexistent field!");
   }

Also, in the tutorial, r0 and r1 in the sample Jimple output need to be 
updated to l0 and tmpRef respectively.

Cheers,
Chris