--- /dev/null	2018-03-29 09:42:00.000000000 +0800
+++ new/test/jdk/java/lang/SecurityManager/PackageAccessTest.java	2018-03-29 09:41:59.000000000 +0800
@@ -0,0 +1,100 @@
+/*
+ * Copyright (c) 1999, 2018, 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 4256530 4136245
+ * @summary Check that restricted packages that are supposed to be restricted
+ *          and explicit grants accessClassInPackage permission overridden in
+ *          privileged block
+ * @modules java.base/sun.security.x509
+ * @run main/othervm PackageAccessTest
+ * @run main/othervm/java.security.policy=test.policy PackageAccessTest access
+ * @run main/othervm/java.security.policy=empty.policy PackageAccessTest deny
+ */
+
+import java.security.AccessControlException;
+import java.security.AccessController;
+import java.security.PrivilegedExceptionAction;
+
+public class PackageAccessTest {
+
+    public static void main(String[] args) {
+        boolean access = true;
+
+        if (args != null && args.length > 0) {
+            switch (args[0]) {
+                case "access":
+                    access = true;
+                    break;
+                case "deny":
+                    access = false;
+                    break;
+                default:
+                    throw new RuntimeException(
+                            "Invalid input parameter " + args[0]);
+            }
+        }
+
+        testPkgAccess(access);
+        testPkgAccessWithPrivileged(access);
+    }
+
+    private static void testPkgAccess(boolean access) {
+        try {
+            sun.security.x509.X509CertInfo x = new sun.security.x509.X509CertInfo();
+            if (!access) {
+                throw new RuntimeException(
+                        "application unexpectedly able to access the internal package");
+            }
+        } catch (SecurityException se) {
+            if (access) {
+                throw new RuntimeException("Unexpected security exception", se);
+            }
+        }
+    }
+
+    private static void testPkgAccessWithPrivileged(boolean access) {
+        sun.security.x509.X509CertInfo o = null;
+        try {
+            o = (sun.security.x509.X509CertInfo) AccessController.doPrivileged(
+                    (PrivilegedExceptionAction) () -> new sun.security.x509.X509CertInfo());
+            if (!access) {
+                throw new RuntimeException(
+                        "application unexpectedly able to access the internal package");
+            }
+        } catch (AccessControlException ace) {
+            if (access) {
+                throw new RuntimeException("Unexpected AccessControlException",
+                        ace);
+            }
+        } catch (Exception ex) {
+            throw new RuntimeException("Test failed with unexpected exception",
+                    ex);
+        }
+        if (access && o == null)
+            throw new RuntimeException(
+                    "Test failed: unable to instantiate object");
+    }
+
+}
--- /dev/null	2018-03-29 09:42:01.000000000 +0800
+++ new/test/jdk/java/lang/SecurityManager/empty.policy	2018-03-29 09:42:00.000000000 +0800
@@ -0,0 +1 @@
+ 
--- /dev/null	2018-03-29 09:42:01.000000000 +0800
+++ new/test/jdk/java/lang/SecurityManager/test.policy	2018-03-29 09:42:01.000000000 +0800
@@ -0,0 +1,3 @@
+grant  {
+ permission java.lang.RuntimePermission "accessClassInPackage.sun.security.x509";
+};