1 /* 2 * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 /* 25 * @test 26 * @bug 7194897 27 * @summary JSR 292: Cannot create more than 16 instances of an anonymous class 28 * @modules java.base/sun.misc 29 * @modules java.management 30 * @library /lib/testlibrary 31 * @author Robert Field 32 * @compile -XDignore.symbol.file ManyNewInstanceAnonTest.java 33 * @build jdk.testlibrary.* 34 * @run main ClassFileInstaller ManyNewInstanceAnonTest 35 * @run main/othervm -Xbootclasspath/a:. -Xverify:all ManyNewInstanceAnonTest 36 * @run main/othervm -Xbootclasspath/a:. -Xverify:all -Dsun.reflection.noInflation=true ManyNewInstanceAnonTest 37 */ 38 import java.io.ByteArrayOutputStream; 39 import java.io.InputStream; 40 import sun.misc.Unsafe; 41 42 public class ManyNewInstanceAnonTest { 43 44 static final int REPS = 20; 45 static final Class<?> klass = ManyNewInstanceAnonTest.class; 46 47 public static void main(String[] args) throws Exception { 48 Class<?> c = Unsafe.getUnsafe().defineAnonymousClass(klass, readClassFile(), null); 49 for (int i = 0; i < REPS; ++i) { 50 System.out.printf("%d: %s\n", i, c.newInstance()); 51 } 52 System.out.println("Passed."); 53 } 54 55 private static byte[] readClassFile() throws Exception { 56 try (InputStream in = klass.getResourceAsStream(klass.getSimpleName() + ".class"); 57 ByteArrayOutputStream out = new ByteArrayOutputStream()) 58 { 59 int b; 60 while ((b = in.read()) != -1) { 61 out.write(b); 62 } 63 return out.toByteArray(); 64 } 65 } 66 }