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
public _FileSynchronizer(IFileEditorInput fileEditorInput) {
				super(fileEditorInput);
			}
		};
		
		/**
		 * Bundle of all required informations to allow working copy management. 
		 */
		protected class CompilationUnitInfo extends FileInfo {
			
			ICompilationUnit fCopy;
			
			CompilationUnitInfo(IDocument document, IAnnotationModel model, _FileSynchronizer fileSynchronizer, ICompilationUnit copy) {
				super(document, model, fileSynchronizer);
				fCopy= copy;
			}
			
			void setModificationStamp(long timeStamp) {
				fModificationStamp= timeStamp;
			}
		};
		
		/**
		 * Annotation representating an <code>IProblem</code>.
		 */
		static protected class ProblemAnnotation extends Annotation implements IJavaAnnotation {