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Title: Stepping over "Object o = null" causes Eclipse "Internal Error"

 Interesting bug, while using Eclipse 3.3.1.1 with m37a of android and the following code:  package com.saville.android;  import android.app.Activity; import android.os.Bundle; import android.util.Log;  public class TestObjectNull extends Activity {     /** Called when the activity is first created. */     @Override     public void onCreate(Bundle icicle) {         super.onCreate(icicle);         setContentView(R.layout.main);          Object o = null;          o = "hi";          Log.v(TAG, "o=" + o);     }      static final String TAG = "TestObjectNull"; }  Eclipse indicates an "Internal Error" with "See the .log file for more details" and then asks if I want to exit the workbench. This occurs when I place a break point on "setContentView(R.layout.main);" and then single step over "Object o = null;"  If I change "Object o = null;" to "Object o" all is well.  The last lines of the .log file are:  !ENTRY org.eclipse.core.jobs 4 2 2008-01-01 13:04:15.825 !MESSAGE An internal error occurred during: "has children update". !STACK 0 java.lang.InternalError: Invalid signature: ""         at org.eclipse.jdi.internal.TypeImpl.signatureToTag(TypeImpl.java:307)         at org.eclipse.jdi.internal.LocalVariableImpl.tag(LocalVariableImpl.java:185)         at org.eclipse.jdi.internal.StackFrameImpl.getValues(StackFrameImpl.java:128)         at org.eclipse.jdi.internal.StackFrameImpl.getValue(StackFrameImpl.java:73)         at org.eclipse.jdt.internal.debug.core.model.JDILocalVariable.retrieveValue(JDILocalVariable.java:57)         at org.eclipse.jdt.internal.debug.core.model.JDIVariable.getCurrentValue(JDIVariable.java:66)         at org.eclipse.jdt.internal.debug.core.model.JDIVariable.getValue(JDIVariable.java:88)         at org.eclipse.debug.internal.ui.model.elements.VariableContentProvider.hasChildren(VariableContentProvider.java:62)         at org.eclipse.jdt.internal.debug.ui.variables.JavaVariableContentProvider.hasChildren(JavaVariableContentProvider.java:73)         at org.eclipse.debug.internal.ui.model.elements.ElementContentProvider.updateHasChildren(ElementContentProvider.java:223)         at org.eclipse.debug.internal.ui.model.elements.ElementContentProvider$3.run(ElementContentProvider.java:200) 

        at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55)

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