### Eclipse Workspace Patch 1.0
#P org.eclipse.jdt.ui
Index: core refactoring/org/eclipse/jdt/internal/corext/refactoring/rename/RippleMethodFinder2.java
===================================================================
RCS file: /cvsroot/eclipse/org.eclipse.jdt.ui/core refactoring/org/eclipse/jdt/internal/corext/refactoring/rename/RippleMethodFinder2.java,v
retrieving revision 1.18
diff -u -r1.18 RippleMethodFinder2.java
--- core refactoring/org/eclipse/jdt/internal/corext/refactoring/rename/RippleMethodFinder2.java	5 Nov 2008 18:44:38 -0000	1.18
+++ core refactoring/org/eclipse/jdt/internal/corext/refactoring/rename/RippleMethodFinder2.java	31 Oct 2009 22:22:06 -0000
@@ -239,8 +239,11 @@
 			IMethod alienDeclaration= (IMethod) iter.next();
 			IType alienType= alienDeclaration.getDeclaringType();
 			alienTypes.add(alienType);
-			if (alienType.isInterface())
-				hasAlienInterfaces= true;
+			try {
+				if (alienType.isInterface())
+					hasAlienInterfaces= true;
+			} catch (Exception ignore) {
+			}
 		}
 		if (alienTypes.size() == 0) //no nasty marriage scenarios without types to marry with...
 			return (IMethod[]) relatedMethods.toArray(new IMethod[relatedMethods.size()]);
@@ -272,9 +275,12 @@
 				IType alienType= (IType) iter.next();
 				IMethod alienMethod= (IMethod) fTypeToMethod.get(alienType);
 				ITypeHierarchy hierarchy= getCachedHierarchy(alienType, owner, new SubProgressMonitor(pm, 1));
-				if (hierarchy == null)
-					hierarchy= alienType.newTypeHierarchy(owner, new SubProgressMonitor(pm, 1));
-				IType[] allSubtypes= hierarchy.getAllSubtypes(alienType);
+				try {
+					if (hierarchy == null)
+						hierarchy= alienType.newTypeHierarchy(owner, new SubProgressMonitor(pm, 1));
+				} catch (Exception ignore) {
+				}
+				IType[] allSubtypes= hierarchy == null ? new IType[0] : hierarchy.getAllSubtypes(alienType);
 				for (int i= 0; i < allSubtypes.length; i++) {
 					IType subtype= allSubtypes[i];
 					if (relatedSubTypes.contains(subtype)) {
@@ -318,10 +324,13 @@
 				IType root= (IType) iter.next();
 				ITypeHierarchy hierarchy= (ITypeHierarchy) fRootHierarchies.get(root);
 				if (hierarchy == null) {
-					hierarchy= root.newTypeHierarchy(owner, new SubProgressMonitor(monitor, 1));
-					fRootHierarchies.put(root, hierarchy);
+					try {
+						hierarchy= root.newTypeHierarchy(owner, new SubProgressMonitor(monitor, 1));
+						fRootHierarchies.put(root, hierarchy);
+					} catch (Exception ignore) {
+					}
 				}
-				if (hierarchy.contains(type))
+				if (hierarchy != null && hierarchy.contains(type))
 					return hierarchy;
 			}
 		}
@@ -404,7 +413,12 @@
 			} else {
 				//check whether method in supertype is really overridden:
 				IMember superMethod= (IMember) fTypeToMethod.get(supertype);
-				if (JavaModelUtil.isVisibleInHierarchy(superMethod, anchor.getPackageFragment())) {
+				boolean isVisibleInHierarchy = false;
+				try {
+					isVisibleInHierarchy = JavaModelUtil.isVisibleInHierarchy(superMethod, anchor.getPackageFragment());
+				} catch (Exception ignore) {
+				}
+				if (isVisibleInHierarchy) {
 					IType rep= fUnionFind.find(anchor);
 					fUnionFind.union(rep, superRep);
 					// current type is no root anymore