Bug 176441 [Markers] NPE while refreshing the problem view
I got this exception using I20070228-0930. No steps to reproduce. It seems to happen when refreshing the problem view. java.lang.NullPointerException at org.eclipse.ui.views.markers.internal.MarkerAdapter.buildAllMarkers(MarkerAdapter.java:251) at org.eclipse.ui.views.markers.internal.MarkerView.updateForContentsRefresh(MarkerView.java:570) at org.eclipse.ui.views.markers.internal.MarkerView$MarkerProcessJob.run(MarkerView.java:151) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:58)
bundles/org.eclipse.ui.ide/src/org/eclipse/ui/views/markers/internal/TableView.java
* 
	 * @param preferencesAction
	 */
	void setPreferencesAction(ViewPreferencesAction preferencesAction) {
		this.preferencesAction = preferencesAction;
	}
	/**
	 * Get the content provider
	 * 
	 * @return MarkerTreeContentProvider
	 */
	MarkerTreeContentProvider getContentProvider() {
		return contentProvider;
	}
	/**
	 * Return the input to the viewer.
	 * 
	 * @return Object
	 */
	public Object getViewerInput() {
		return getViewer().getInput();
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.ui.views.markers.internal.TableView#setSortIndicators()
	 */
	void setSortIndicators() {
		IField top = getTableSorter().getTopField();
		TreeColumn[] columns = getViewer().getTree().getColumns();