1 /* 2 * Copyright (c) 2011, 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 /** 26 * @test 27 * @bug 6992759 28 * @summary Bad code generated for integer <= comparison, fails for Integer.MAX_VALUE 29 * 30 * @run main/timeout=240 compiler.c2.Test6992759 31 */ 32 33 package compiler.c2; 34 35 public class Test6992759 { 36 37 static final int N_TESTS = 1000000000; 38 39 public static void main(String[] args) throws Exception { 40 41 /* 42 * If MAX_VALUE is changed to MAX_VALUE - 1 below, the test passes 43 * because (apparently) bad code is only generated when comparing 44 * <= MAX_VALUE in the doTest method. 45 */ 46 Test6992759 test = new Test6992759(); 47 for (int i = 0; i < N_TESTS; i += 1) { 48 test.doTest(10, Integer.MAX_VALUE, i); 49 //test.doTest(10, Integer.MAX_VALUE - 1, i); 50 } 51 System.out.println("No failure"); 52 } 53 54 void doTest(int expected, int max, int i) { 55 int counted; 56 for (counted = 0; 57 (counted <= max) && (counted < expected); 58 counted += 1) { 59 } 60 if (counted != expected) { 61 throw new RuntimeException("Failed test iteration=" + i + 62 " max=" + max + 63 " counted=" + counted + 64 " expected=" + expected); 65 } 66 } 67 } 68