Fixes issue #49. Credit goes entirely to Michael McCallum who found the problem, found the place in the source where the problem occurred, and even wrote a patch.

src/lombok/eclipse/Eclipse.java

@@ -243,7 +243,10 @@ public class Eclipse {
 		}
 		
 		if ( ref instanceof Wildcard ) {
-			return new Wildcard(((Wildcard)ref).kind);
+			Wildcard wildcard = new Wildcard(((Wildcard)ref).kind);
+			wildcard.sourceStart = ref.sourceStart;
+			wildcard.sourceEnd = ref.sourceEnd;
+			return wildcard;
 		}
 		
 		if ( ref instanceof SingleTypeReference ) {