85 lines
3.1 KiB
Java
85 lines
3.1 KiB
Java
/*
|
|
* Copyright (c) 2017, 2019, 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 ArraysNewInstanceBug
|
|
* @bug 8182397
|
|
* @summary race in setting array_klass field for component mirror with mirror update for klass
|
|
* @modules java.base/jdk.internal.misc
|
|
* @run main/othervm -Xcomp ArraysNewInstanceBug
|
|
*/
|
|
|
|
// This test crashes in compiled code with race, because the compiler generates code that assumes this ordering.
|
|
import java.lang.reflect.Array;
|
|
import java.io.File;
|
|
import java.net.URL;
|
|
import java.net.URLClassLoader;
|
|
|
|
public class ArraysNewInstanceBug implements Runnable {
|
|
static Class<?>[] classes;
|
|
|
|
int start;
|
|
|
|
ArraysNewInstanceBug(int start) {
|
|
this.start = start;
|
|
}
|
|
|
|
String[] result;
|
|
|
|
public void run() {
|
|
result = new String[classes.length];
|
|
System.err.print('.');
|
|
for (int i = start; i < classes.length; i++) {
|
|
result[i] = Array.newInstance(classes[i], 0).getClass().getName();
|
|
}
|
|
}
|
|
|
|
public static void main(String[] args) throws Throwable {
|
|
Class<?> c = ArraysNewInstanceBug.class;
|
|
ClassLoader apploader = c.getClassLoader();
|
|
File testClasses = new File(System.getProperty("test.classes"));
|
|
for (int iter = 0; iter < 10 ; iter++) { // 10 is enough to get it to crash on my machine.
|
|
System.err.print('[');
|
|
classes = new Class<?>[1000];
|
|
for (int i = 0; i < classes.length; i++) {
|
|
ClassLoader loader = new URLClassLoader(new URL[] { testClasses.toURI().toURL() }, apploader.getParent());
|
|
classes[i] = loader.loadClass(c.getSimpleName());
|
|
}
|
|
System.err.print(']');
|
|
System.err.print('(');
|
|
int threadCount = 64;
|
|
Thread[] threads = new Thread[threadCount];
|
|
for (int i = 0; i < threads.length; i++) {
|
|
threads[i] = new Thread(new ArraysNewInstanceBug(i));
|
|
}
|
|
for (int i = 0; i < threads.length; i++) {
|
|
threads[i].start();
|
|
}
|
|
for (int i = 0; i < threads.length; i++) {
|
|
threads[i].join();
|
|
}
|
|
System.err.print(')');
|
|
}
|
|
}
|
|
}
|