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
.get(pluginId);
					if (inactiveDescriptors == null) {
						inactiveDescriptors = new ArrayList();
						inactivePluginsWithSaveablesProviders.put(pluginId,
								inactiveDescriptors);
					}
					inactiveDescriptors.add(descriptor);
				} else {
					SaveablesProvider saveablesProvider = createSaveablesProvider(descriptor);
					if (saveablesProvider != null) {
						saveablesProvider.init(saveablesLifecycleListener);
						result.add(saveablesProvider);
						saveablesProviderMap.put(descriptor, saveablesProvider);
					}
				}
			}
			saveablesProviders = (SaveablesProvider[]) result
					.toArray(new SaveablesProvider[result.size()]);
		}
		return saveablesProviders;
	}
	/**
	 * @param descriptor
	 * @return the SaveablesProvider, or null
	 */
	private SaveablesProvider createSaveablesProvider(NavigatorContentDescriptor descriptor) {
		NavigatorContentExtension extension = contentService
				.getExtension(descriptor, true);
		ITreeContentProvider contentProvider = extension
				.getContentProvider();