?? regenerated file missing from my system but used in test case

tests/errors/ClassExtendingAbstractAspectCE.java

@@ -0,0 +1,23 @@
+import org.aspectj.testing.*;
+
+public class ClassExtendingAbstractAspectCE {
+    public static void main(String[] args) {
+        new ClassExtendingAbstractAspectCE().go(args);
+    }
+
+    void go(String[] args) {
+        Extends e = new Extends();
+        Tester.check(false, "shouldn't have compiled!");
+    }
+
+}
+
+abstract aspect Aspect {
+
+}
+
+
+class Extends extends Aspect {     // CE 20
+    pointcut p(): call(* *());
+}
+