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61 lines
1.9 KiB
Java
61 lines
1.9 KiB
Java
/*
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* Copyright (c) 2025, Red Hat, Inc. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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/**
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* @test
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* @bug 8356989
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* @summary Unexpected null in C2 compiled code
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* @run main/othervm -XX:-BackgroundCompilation TestArrayCopySameSrcDstInitializesNonEscapingArray
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* @run main TestArrayCopySameSrcDstInitializesNonEscapingArray
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*/
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public class TestArrayCopySameSrcDstInitializesNonEscapingArray {
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private static volatile int volatileField;
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public static void main(String[] args) {
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Object obj = new Object();
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for (int i = 0; i < 20_000; i++) {
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test1(obj);
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}
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}
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private static void test1(Object obj) {
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A a = new A();
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Object[] array = new Object[2];
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array[0] = obj;
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a.field = array;
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System.arraycopy(array, 0, array, 1, 1);
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if (a.field[1] == null) {
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throw new RuntimeException("Can't be null");
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}
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}
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private static class A {
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Object[] field;
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public A() {
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field = null;
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}
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}
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}
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