1 /*
   2  * Copyright (c) 2018, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8214113
  27  * @summary Verify the switch expression's type does not have a constant attached,
  28  *          and so the switch expression is not elided.
  29  * @compile --enable-preview --source 13 SwitchExpressionIsNotAConstant.java
  30  * @run main/othervm --enable-preview SwitchExpressionIsNotAConstant
  31  */
  32 public class SwitchExpressionIsNotAConstant {
  33 
  34     public static void main(String[] args) {
  35         int i = 0;
  36         {
  37             i = 0;
  38             int dummy = 1 + switch (i) {
  39                 default -> {
  40                     i++;
  41                     break 1;
  42                 }
  43             };
  44             if (i != 1) {
  45                 throw new IllegalStateException("Side effects missing.");
  46             }
  47         }
  48         {
  49             i = 0;

   1 /*
   2  * Copyright (c) 2018, 2019, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.
   8  *
   9  * This code is distributed in the hope that it will be useful, but WITHOUT
  10  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  11  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  12  * version 2 for more details (a copy is included in the LICENSE file that
  13  * accompanied this code).
  14  *
  15  * You should have received a copy of the GNU General Public License version
  16  * 2 along with this work; if not, write to the Free Software Foundation,
  17  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  18  *
  19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  20  * or visit www.oracle.com if you need additional information or have any
  21  * questions.
  22  */
  23 
  24 /**
  25  * @test
  26  * @bug 8214113
  27  * @summary Verify the switch expression's type does not have a constant attached,
  28  *          and so the switch expression is not elided.
  29  * @compile --enable-preview --source ${jdk.version} SwitchExpressionIsNotAConstant.java
  30  * @run main/othervm --enable-preview SwitchExpressionIsNotAConstant
  31  */
  32 public class SwitchExpressionIsNotAConstant {
  33 
  34     public static void main(String[] args) {
  35         int i = 0;
  36         {
  37             i = 0;
  38             int dummy = 1 + switch (i) {
  39                 default -> {
  40                     i++;
  41                     break 1;
  42                 }
  43             };
  44             if (i != 1) {
  45                 throw new IllegalStateException("Side effects missing.");
  46             }
  47         }
  48         {
  49             i = 0;