Bug 59050 Dead lock in JavaReconciler
Using build I200404131323. I was editing several files and haven't save them immediately when my eclipse hanged infinitely... Looking at console, the exception seems to show that I was trying to open a popup-menu on a new created class, but I'm not completely sure that dead-lock occurred exactly at this moment. I'll add complete console output including VM Dump Thread which identifies the dead-lock... Set severity 'critical' as I have to cancel my eclipse session without saving and lost my modifications in modified editors...
org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/javaeditor/CompilationUnitEditor.java
if (startOffset == -1) {
					startOffset= endOffset; 
					revealStartOffset= revealEndOffset;
				}
				
				if (endOffset == -1) {
					endOffset= startOffset; 
					revealEndOffset= revealStartOffset;
				}
				
				IJavaElement element;
				if (endOffset == -1) {
					 
					element= fEndOffset.getElement();
					if (element == null)
						element= fStartOffset.getElement();
					if (element != null)
						setSelection(element);
					return;
				}
							
				if (isValidSelection(revealStartOffset, revealEndOffset - revealStartOffset) && isValidSelection(startOffset, endOffset - startOffset))
					selectAndReveal(startOffset, endOffset - startOffset, revealStartOffset, revealEndOffset - revealStartOffset);
			} finally {
				fStartOffset.clear();
				fEndOffset.clear();
			}
		}
		private boolean isValidSelection(int offset, int length) {
			IDocumentProvider provider= getDocumentProvider();