/* * Copyright (c) 2024, 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 8329757 * @summary Deoptimization with nested eliminated and not eliminated locks * caused reordered lock stacks. This can be handled by the interpreter * but when a frame is migrated back to compiled code via OSR the C2 * assumption about balanced monitorenter-monitorexit is broken. * * @requires vm.compMode != "Xint" * * @run main/othervm compiler.escapeAnalysis.Test8329757 */ package compiler.escapeAnalysis; public class Test8329757 { int a = 400; Double ddd; void q() { int e; synchronized (new Double(1.1f)) { int[] f = new int[a]; synchronized (Test8329757.class) { for (int d = 4; d < 127; d++) { e = 13; do switch (d * 5) { case 0: case 42: case 29: e = d; default: f[1] = e; } while (--e > 0); } } } } void n() { for (int j = 6; j < 274; ++j) q(); } public static void main(String[] args) { Test8329757 r = new Test8329757(); for (int i = 0; i < 1000; i++) r.n(); } }