d623fc1bba
Check that the unnamed module for a given ClassLoader is an instance of java.lang.Module. Reviewed-by: alanb, acorn, coleenp, dholmes, hseigel
56 lines
2.2 KiB
Java
56 lines
2.2 KiB
Java
/*
|
|
* Copyright (c) 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.
|
|
*/
|
|
|
|
import jdk.internal.misc.Unsafe;
|
|
|
|
public class ClassLoaderNoUnnamedModule {
|
|
static final Unsafe UNSAFE = Unsafe.getUnsafe();
|
|
|
|
class TestClass extends ClassLoader {
|
|
public boolean calledConstructor = false;
|
|
|
|
public TestClass() {
|
|
calledConstructor = true;
|
|
}
|
|
}
|
|
|
|
static void testConstructorCall() throws Exception {
|
|
// Use Unsafe allocateInstance to construct an instance of TestClass
|
|
// which does not invoke its super's, java.lang.ClassLoader, constructor.
|
|
// An unnamed module for this ClassLoader is not created.
|
|
TestClass tc = (TestClass)UNSAFE.allocateInstance(TestClass.class);
|
|
System.out.println("tc = " + tc + "tc's ctor called = " + tc.calledConstructor);
|
|
Module unnamed_module = tc.getUnnamedModule();
|
|
if (unnamed_module == null) {
|
|
System.out.println("The unnamed module for this class loader is null");
|
|
}
|
|
|
|
tc.loadClass(String.class.getName());
|
|
Class.forName(String.class.getName(), false, tc);
|
|
}
|
|
|
|
public static void main(String args[]) throws Exception {
|
|
testConstructorCall();
|
|
}
|
|
}
|