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 * @author Robert Field 29 * @library /lib/testlibrary 30 * @compile -XDignore.symbol.file ManyNewInstanceAnonTest.java 31 * @run main ClassFileInstaller ManyNewInstanceAnonTest 32 * @run main/othervm -Xbootclasspath/a:. -Xverify:all ManyNewInstanceAnonTest 33 * @run main/othervm -Xbootclasspath/a:. -Xverify:all -Dsun.reflection.noInflation=true ManyNewInstanceAnonTest 34 */ 35 import java.io.ByteArrayOutputStream; 36 import java.io.InputStream; 37 import sun.misc.Unsafe; 38 39 public class ManyNewInstanceAnonTest { 40 41 static final int REPS = 20; 42 static final Class<?> klass = ManyNewInstanceAnonTest.class; 43 44 public static void main(String[] args) throws Exception { 45 Class<?> c = Unsafe.getUnsafe().defineAnonymousClass(klass, readClassFile(), null); 46 for (int i = 0; i < REPS; ++i) { 47 System.out.printf("%d: %s\n", i, c.newInstance()); 48 } 49 System.out.println("Passed."); 50 } 51 52 private static byte[] readClassFile() throws Exception { 53 try (InputStream in = klass.getResourceAsStream(klass.getSimpleName() + ".class"); 54 ByteArrayOutputStream out = new ByteArrayOutputStream()) 55 { 56 int b; 57 while ((b = in.read()) != -1) { 58 out.write(b); 59 } 60 return out.toByteArray(); 61 } 62 } 63 }