Bug 67187 [implementation] Concurrent modification of CompilationUnitDocumentProvider's ReverseMap
Was just scrolling through a Java file and got a popup with the following info: Java AST creation (Error: An internal error occurred during: "Java AST creation".) An internal error occurred during: "Java AST creation". java.lang.IndexOutOfBoundsException: Index: 62, Size: 60 java.util.ArrayList.RangeCheck(ArrayList.java:507) java.util.ArrayList.get(ArrayList.java:324) org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider$ReverseM ap.get(CompilationUnitDocumentProvider.java:325) org.eclipse.jdt.internal.ui.javaeditor.CompilationUnitDocumentProvider$Compilat ionUnitAnnotationModel.addAnnotation(CompilationUnitDocumentProvider.java:665) org.eclipse.jface.text.source.AnnotationModel.addAnnotation (AnnotationModel.java:163) org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.calcula teLightBulb(QuickAssistLightBulbUpdater.java:233) org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.doSelec tionChanged(QuickAssistLightBulbUpdater.java:221) org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater.access$ 0(QuickAssistLightBulbUpdater.java:204) org.eclipse.jdt.internal.ui.text.correction.QuickAssistLightBulbUpdater$1.selec tionChanged(QuickAssistLightBulbUpdater.java:128) org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$PartLis tenerGroup.calculateASTandInform(SelectionListenerWithASTManager.java:164) org.eclipse.jdt.internal.ui.viewsupport.SelectionListenerWithASTManager$3.run (SelectionListenerWithASTManager.java:136) org.eclipse.core.internal.jobs.Worker.run(Worker.java:66) Wasn't doing anything remarkable at the time - certainly nothing that I would expect would induce this...
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitDocumentProvider.java
private static int computeLayer(String annotationType, AnnotationPreferenceLookup lookup) {
				Annotation annotation= new Annotation(annotationType, false, null);
				AnnotationPreference preference= lookup.getAnnotationPreference(annotation);
				if (preference != null)
					return preference.getPresentationLayer() + 1;
				else
					return IAnnotationAccessExtension.DEFAULT_LAYER + 1;
			}
			
			private static Image fgQuickFixImage;
			private static Image fgQuickFixErrorImage;
			private static boolean fgQuickFixImagesInitialized= false;
			
			private ICompilationUnit fCompilationUnit;
			private List fOverlaids;
			private IProblem fProblem;
			private Image fImage;
			private boolean fQuickFixImagesInitialized= false;
			private int fLayer= IAnnotationAccessExtension.DEFAULT_LAYER;
			
			
			public ProblemAnnotation(IProblem problem, ICompilationUnit cu) {
				
				fProblem= problem;
				fCompilationUnit= cu;
				
				if (SpellProblem.Spelling == fProblem.getID()) {
					setType(SPELLING_ANNOTATION_TYPE);
					fLayer= WARNING_LAYER;