8022343: j.l.Class.getAnnotatedSuperclass() doesn't return null in some cases

Reviewed-by: darcy, vromero, psandoz

jdk/src/share/classes/java/lang/Class.java

@@ -3338,8 +3338,16 @@ public final class Class<T> implements java.io.Serializable,
      * @since 1.8
      */
     public AnnotatedType getAnnotatedSuperclass() {
-         return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
-}
+        if (this == Object.class ||
+                isInterface() ||
+                isArray() ||
+                isPrimitive() ||
+                this == Void.TYPE) {
+            return null;
+        }
+
+        return TypeAnnotationParser.buildAnnotatedSuperclass(getRawTypeAnnotations(), getConstantPool(), this);
+    }
 
     /**
      * Returns an array of AnnotatedType objects that represent the use of types to

jdk/test/java/lang/annotation/TypeAnnotationReflection.java

@@ -23,7 +23,7 @@
 
 /*
  * @test
- * @bug 8004698 8007073
+ * @bug 8004698 8007073 8022343
  * @summary Unit test for type annotations
  */
 
@@ -58,7 +58,7 @@ public class TypeAnnotationReflection {
     }
 
     private static void testSuper() throws Exception {
-        check(Object.class.getAnnotatedSuperclass().getAnnotations().length == 0);
+        check(Object.class.getAnnotatedSuperclass() == null);
         check(Class.class.getAnnotatedSuperclass().getAnnotations().length == 0);
 
         AnnotatedType a;

jdk/test/java/lang/annotation/typeAnnotations/GetAnnotatedSuperclass.java

@@ -0,0 +1,56 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8022343
+ * @summary make sure Class.getAnnotatedSuperclass() returns null when specified to do so
+ */
+
+public class GetAnnotatedSuperclass {
+    private static final Class<?>[] testData = {
+        Object.class,
+        If.class,
+        Object[].class,
+        void.class,
+        int.class,
+    };
+
+    public static void main(String[] args) throws Exception {
+        int failed = 0;
+        for (Class<?> toTest : testData) {
+            Object res = toTest.getAnnotatedSuperclass();
+
+            if (res != null) {
+                failed++;
+                System.out.println(toTest + ".getAnnotatedSuperclass() returns: "
+                        + res + ", should be null");
+            }
+        }
+
+        if (failed != 0)
+            throw new RuntimeException("Test failed, check log for details");
+    }
+
+    interface If {}
+}