Bug 175181 NavigatorSaveablesServices NPEs on shutdown
The following exception was encountered on shutdown the applicaiton. It happend on Linux(SuSE Linux Enterprise 9, PatchLevel: 3). It's very similar to defect: 142785. !ENTRY org.eclipse.osgi 4 0 2006-05-19 11:21:38.993 !MESSAGE An unexpected runtime error has occurred. !STACK 0 java.lang.NullPointerException at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.computeSaveables(NavigatorSaveablesService.java:216) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.recomputeSaveablesAndNotify(NavigatorSaveablesService.java:374) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.handleBundleStopped(NavigatorSaveablesService.java:457) at org.eclipse.ui.internal.navigator.NavigatorSaveablesService.bundleChanged(NavigatorSaveablesService.java:100) at org.eclipse.ui.internal.navigator.NavigatorPlugin$1.bundleChanged(NavigatorPlugin.java:35) at org.eclipse.osgi.framework.internal.core.BundleContextImpl.dispatchEvent(BundleContextImpl.java:1206) at org.eclipse.osgi.framework.eventmgr.EventManager.dispatchEvent(EventManager.java:189) at org.eclipse.osgi.framework.eventmgr.EventManager$EventThread.run(EventManager.java:291) 11
bundles/org.eclipse.ui.navigator/src/org/eclipse/ui/internal/navigator/NavigatorSaveablesService.java
public void init(final ISaveablesSource saveablesSource,
			final StructuredViewer viewer,
			ISaveablesLifecycleListener outsideListener) {
		 
		synchronized (instances) {
			
			
			
			
			
			
			synchronized (this) {
				this.saveablesSource = saveablesSource;
				this.viewer = viewer;
				this.outsideListener = outsideListener;
				currentSaveables = computeSaveables();
				
				addInstance(this);
			}
		}
		viewer.getControl().addDisposeListener(disposeListener);
	}
	/** helper to compute the saveables for which elements are part of the tree.
	 * Must be called from a synchronized method.
	 * 
	 * @return the saveables
	 */ 
	private Saveable[] computeSaveables() {
		ITreeContentProvider contentProvider = (ITreeContentProvider) viewer
				.getContentProvider();