/* * Copyright (c) 2022 THL A29 Limited, a Tencent company. 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 8293978 * @summary Crash in PhaseIdealLoop::verify_strip_mined_scheduling * * @run main/othervm -Xbatch TestDuplicateSimpleLoopBackedge * */ public class TestDuplicateSimpleLoopBackedge { static void zero(Byte[] a) { for (int e = 0; e < a.length; e++) { a[e] = 0; } } int foo(int g) { Byte h[] = new Byte[500]; zero(h); short i = 7; while (i != 1) { i = (short)(i - 3); } return 0; } void bar(String[] k) { try { int l = 5; if (l < foo(l)) { } } catch (Exception m) { } } public static void main(String[] args) { TestDuplicateSimpleLoopBackedge n = new TestDuplicateSimpleLoopBackedge(); for (int i = 0; i < 10000; ++i) { n.bar(args); } } }