| /* |
| * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| /* |
| * @test |
| * @bug 8011646 |
| * @summary SEGV in compiled code with loop predication |
| * @run main/othervm -XX:-TieredCompilation -XX:CompileOnly=TestHashCode.m1,Object.hashCode TestHashCode |
| * |
| */ |
| |
| public class TestHashCode { |
| static class A { |
| int i; |
| } |
| |
| static class B extends A { |
| } |
| |
| static boolean crash = false; |
| |
| static A m2() { |
| if (crash) { |
| return null; |
| } |
| return new A(); |
| } |
| |
| static int m1(A aa) { |
| int res = 0; |
| for (int i = 0; i < 10; i++) { |
| A a = m2(); |
| int j = a.i; |
| if (aa instanceof B) { |
| } |
| res += a.hashCode(); |
| } |
| return res; |
| } |
| |
| public static void main(String[] args) { |
| A a = new A(); |
| for (int i = 0; i < 20000; i++) { |
| m1(a); |
| } |
| crash = true; |
| try { |
| m1(a); |
| } catch (NullPointerException e) { |
| System.out.println("Test passed"); |
| } |
| } |
| } |