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