1 /* 2 * Copyright (c) 2009, 2010, 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 /** 26 * @test 27 * @bug 6857159 28 * @summary local schedule failed with checkcast of Thread.currentThread() 29 * 30 * @run shell Test6857159.sh 31 */ 32 33 public class Test6857159 extends Thread { 34 static class ct0 extends Test6857159 { 35 public void message() { 36 // System.out.println("message"); 37 } 38 39 public void run() { 40 message(); 41 ct0 ct = (ct0) Thread.currentThread(); 42 ct.message(); 43 } 44 } 45 static class ct1 extends ct0 { 46 public void message() { 47 // System.out.println("message"); 48 } 49 } 50 static class ct2 extends ct0 { 51 public void message() { 52 // System.out.println("message"); 53 } 54 } 55 56 public static void main(String[] args) throws Exception { 57 for (int i = 0; i < 20000; i++) { 58 Thread t = null; 59 switch (i % 3) { 60 case 0: t = new ct0(); break; 61 case 1: t = new ct1(); break; 62 case 2: t = new ct2(); break; 63 } 64 t.start(); 65 t.join(); 66 } 67 } 68 }