# HG changeset patch # User valeriep # Date 1250813773 25200 # Node ID 537bf2e0cecadc72ef6816840de0c5019fb13fd4 # Parent 34d923c996e40c904a0221ab2a09e2836f46f728 6874407: Missing regression test for 6636650 Summary: Prevent classloader from resurrection Reviewed-by: hawtin diff -r 34d923c996e4 -r 537bf2e0ceca jdk/test/java/lang/ClassLoader/UninitializedParent.java --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/jdk/test/java/lang/ClassLoader/UninitializedParent.java Thu Aug 20 17:16:13 2009 -0700 @@ -0,0 +1,68 @@ +/* + * Copyright 2009 Sun Microsystems, Inc. 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara, + * CA 95054 USA or visit www.sun.com if you need additional information or + * have any questions. + */ + +/* + * @test + * @bug 6636650 + * @summary Uninitialized class loaders should not be a parent of other + * class loaders. + */ + + +import java.net.*; + +public class UninitializedParent { + private static ClassLoader loader; + public static void main(String[] args) throws Exception { + System.setSecurityManager(new SecurityManager()); + + // Create an uninitialized class loader + try { + new ClassLoader(null) { + @Override + protected void finalize() { + loader = this; + } + }; + } catch (SecurityException exc) { + // Expected + } + System.gc(); + System.runFinalization(); + + // if 'loader' isn't null, need to ensure that it can't be used as + // parent + if (loader != null) { + try { + // Create a class loader with 'loader' being the parent + URLClassLoader child = URLClassLoader.newInstance + (new URL[0], loader); + throw new RuntimeException("Test Failed!"); + } catch (SecurityException se) { + System.out.println("Test Passed: Exception thrown"); + } + } else { + System.out.println("Test Passed: Loader is null"); + } + } +}