/*

 * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.

 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

 *

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 * 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.

 *

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 */

/*

 * @test

 * @bug 6194361

 * @bug 8202669

 * @summary Make sure the VM doesn't crash and throws a SecurityException

 *          if defineClass() is called on a byte buffer that parses into a invalid

 *          java.lang.Object class.

 *          Also, make sure the vm doesn't crash on notification for unloading an invalid

 *          java.lang.Object class.

 * @library /runtime/testlibrary /test/lib

 * @modules java.base/jdk.internal.misc

 *          java.compiler

 * @run main TestUnloadClassError

 */

import jdk.test.lib.compiler.InMemoryJavaCompiler;

public class TestUnloadClassError extends ClassLoader {

   static String source =

       " package java.lang;" +

       " public class Object" +

       " {" +

       "   int field;" +

       "   public boolean equals(Object o) {" +

       "     System.out.println(o.field);" +

       "     return false;" +

       "   }" +

       " }";

  public static void main(String[] args) throws Exception

  {

    try {

      TestUnloadClassError loader = new TestUnloadClassError();

      byte[] buf = InMemoryJavaCompiler.compile("java.lang.Object", source,

                                                "--patch-module=java.base");

      Class c = loader.defineClass(buf, 0, buf.length);

      System.out.println("test FAILS");

      throw new RuntimeException("Did not get security exception");

    } catch(SecurityException e) {

      System.out.println("test expects SecurityException");

    }

    // Unload bad class

    ClassUnloadCommon.triggerUnloading();

    System.out.println("test PASSES if it doesn't crash");

  }

}