Bug 28582 Quickfix icon hides the error icon in editor left ruler [quick fix]
Build 20021216 In presence of problems, one cannot see an error icon in the left ruler, since it get overlapped completely with the quickfix icon. The only error indication is the underlining in the code itself.
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
private IFileEditorInput fInput;
			private List fCollectedProblems;
			private List fGeneratedAnnotations;
			private IProgressMonitor fProgressMonitor;
			private boolean fIsActive= false;
			
			private ReverseMap fReverseMap= new ReverseMap();
			private List fPreviouslyOverlaid= null; 
			private List fCurrentlyOverlaid= new ArrayList();
			public CompilationUnitAnnotationModel(IFileEditorInput input) {
				super(input.getFile());
				fInput= input;
			}
			
			protected MarkerAnnotation createMarkerAnnotation(IMarker marker) {
				return new JavaMarkerAnnotation(marker);
			}
			
			protected Position createPositionFromProblem(IProblem problem) {
				int start= problem.getSourceStart();
				if (start < 0)
					return null;
					
				int length= problem.getSourceEnd() - problem.getSourceStart() + 1;
				if (length < 0)