/* * Copyright (c) 2021, Google LLC. 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 8273914 * @summary Indy string concat changes order of operations * * @clean * * @compile -XDstringConcat=indy StringAppendEvaluatesInOrder.java * @run main StringAppendEvaluatesInOrder * * @clean * * @compile -XDstringConcat=indyWithConstants StringAppendEvaluatesInOrder.java * @run main StringAppendEvaluatesInOrder * * @clean * * @compile -XDstringConcat=inline StringAppendEvaluatesInOrder.java * @run main StringAppendEvaluatesInOrder */ public class StringAppendEvaluatesInOrder { static String test() { StringBuilder builder = new StringBuilder("foo"); int i = 15; return "Test: " + i + " " + (++i) + builder + builder.append("bar"); } static String compoundAssignment() { StringBuilder builder2 = new StringBuilder("foo"); Object oo = builder2; oo += "" + builder2.append("bar"); return oo.toString(); } public static void main(String[] args) throws Exception { assertEquals(test(), "Test: 15 16foofoobar"); assertEquals(compoundAssignment(), "foofoobar"); } private static void assertEquals(String actual, String expected) { if (!actual.equals(expected)) { throw new AssertionError("expected: " + expected + ", actual: " + actual); } } }