/* * Copyright (c) 2018, 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 8214113 * @summary Verify the switch expression's type does not have a constant attached, * and so the switch expression is not elided. * @compile --enable-preview --source 13 SwitchExpressionIsNotAConstant.java * @run main/othervm --enable-preview SwitchExpressionIsNotAConstant */ public class SwitchExpressionIsNotAConstant { public static void main(String[] args) { int i = 0; { i = 0; int dummy = 1 + switch (i) { default -> { i++; break 1; } }; if (i != 1) { throw new IllegalStateException("Side effects missing."); } } { i = 0; int dummy = 1 + switch (i) { case -1 -> 1; default -> { i++; break 1; } }; if (i != 1) { throw new IllegalStateException("Side effects missing."); } } { i = 0; int dummy = 1 + switch (i) { default : i++; break 1; }; if (i != 1) { throw new IllegalStateException("Side effects missing."); } } { i = 0; int dummy = 1 + switch (i) { case -1: break 1; default: i++; break 1; }; if (i != 1) { throw new IllegalStateException("Side effects missing."); } } } }