jdk-24/test/langtools/tools/javac/switchexpr/EmptySwitch.java
Jan Lahoda 29852ecd80 8232684: Make switch expressions final
Reviewed-by: alanb, mcimadamore, kvn
2019-11-12 06:32:13 +00:00

54 lines
1.8 KiB
Java

/*
* Copyright (c) 2018, 2019, 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 8206986 8226510
* @summary Verify than a switch that does not yield a value is rejected.
* @compile/fail/ref=EmptySwitch.out -XDrawDiagnostics -XDshould-stop.at=FLOW EmptySwitch.java
*/
public class EmptySwitch {
private void print(EmptySwitchEnum t) {
(switch (t) {
}).toString();
(switch (t) {
default -> throw new IllegalStateException();
}).toString();
(switch (t) {
default: throw new IllegalStateException();
}).toString();
(switch (0) {
case 0: yield "";
default:
}).toString();
(switch (0) {
case 0 -> { yield ""; }
default -> { }
}).toString();
}
enum EmptySwitchEnum {
}
}