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 8007294 27 * @summary ReduceFieldZeroing doesn't check for dependent load and can lead to incorrect execution 28 * @run main/othervm -XX:+IgnoreUnrecognizedVMOptions -XX:+AlwaysIncrementalInline -XX:-UseOnStackReplacement -XX:-BackgroundCompilation Test8007294 29 * 30 */ 31 32 public class Test8007294 { 33 34 int i1; 35 int i2; 36 37 Test8007294(int i1, int i2) { 38 this.i1 = i1; 39 this.i2 = i2; 40 } 41 42 static int m(int v) { 43 return v; 44 } 45 46 static Test8007294 test1() { 47 Test8007294 obj = new Test8007294(10, 100); 48 int v1 = obj.i1; 49 50 int v3 = m(v1); 51 int v2 = obj.i2; 52 obj.i2 = v3; 53 obj.i1 = v2; 54 55 return obj; 56 } 57 58 static int test2(int i) { 59 int j = 0; 60 if (i > 0) { 61 j = 1; 62 } 63 64 int[] arr = new int[10]; 65 arr[0] = 1; 66 arr[1] = 2; 67 int v1 = arr[j]; 68 arr[0] = 3; 69 arr[1] = 4; 70 71 return v1; 72 } 73 74 static public void main(String[] args) { 75 boolean failed = false; 76 for (int i = 0; i < 20000; i++) { 77 Test8007294 obj = test1(); 78 if (obj.i1 != 100 || obj.i2 != 10) { 79 System.out.println("FAILED test1 obj.i1 = " + obj.i1 +", obj.i2 = " + obj.i2); 80 failed = true; 81 break; 82 } 83 } 84 for (int i = 0; i < 20000; i++) { 85 int res = test2(1); 86 if (res != 2) { 87 System.out.println("FAILED test2 = " + res); 88 failed = true; 89 break; 90 } 91 } 92 if (failed) { 93 System.exit(97); 94 } else { 95 System.out.println("PASSED"); 96 } 97 } 98 }