Silent OperationCanceledException during hover #1827

If Operation is canceled result is just not needed anymore. No need to
log an error.

* also silent BadLocationException

#1827

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/text/java/hover/JavaSourceHover.java

@@ -613,7 +613,11 @@ private String getBracketHoverInfo(final ITextViewer textViewer, IRegion region)
 			}
 			return source;
 		} catch (BadLocationException e) {
-			JavaPlugin.log(e);
+			/*
+			 * This code runs in a separate thread which can
+			 * lead to text offsets being out of bounds when
+			 * computing the hover info (see bug 32848).
+			 */
 			return null;
 		}
 	}

org.eclipse.jdt.ui/ui/org/eclipse/jdt/internal/ui/util/SelectionUtil.java

@@ -20,6 +20,7 @@
 import java.util.Objects;
 
 import org.eclipse.core.runtime.ILog;
+import org.eclipse.core.runtime.OperationCanceledException;
 
 import org.eclipse.core.resources.IResource;
 
@@ -130,6 +131,12 @@ private SelectionUtil() {
 	private static String lastErrorMsg;
 
 	public static void logException(String action, RuntimeException e, String title, IDocument document, int offset) {
+		if (e instanceof OperationCanceledException ) {
+			//  Be silent if operation is canceled see
+			//  https://github.com/eclipse-jdt/eclipse.jdt.ui/issues/1827
+			return;
+		}
+
 		// log error and keep going
 		String errorMsg= e.getClass().getSimpleName() + " " + action; //$NON-NLS-1$
 		if (title != null) {