/* * 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 8328747 * @summary WrongMethodTypeException with pattern matching on switch on sealed classes * @library /tools/lib * @modules jdk.compiler/com.sun.tools.javac.api * jdk.compiler/com.sun.tools.javac.main * jdk.jdeps/com.sun.tools.javap * @build toolbox.ToolBox toolbox.JavapTask * @compile T8328747.java * @run main T8328747 */ import toolbox.*; import java.nio.file.Files; import java.nio.file.Path; import java.nio.file.Paths; public class T8328747 extends TestRunner { private ToolBox tb; public static void main(String... args) throws Exception { new T8328747().runTests(); } T8328747() { super(System.err); tb = new ToolBox(); } public void runTests() throws Exception { runTests(m -> new Object[] { Paths.get(m.getName()) }); } @Test public void test(Path base) throws Exception { Path current = base.resolve("."); Path src = current.resolve("src"); Path classes = current.resolve("classes"); tb.writeJavaFiles(src, """ package test; public class Test { public static void main(String[] args) { f(new P()); f(new O()); } private static void f(I info) { switch (info) { case P p -> System.err.println(p); case O o -> System.err.println(o); } } static sealed interface I permits P, O {} private abstract static class A {} static final class P extends A implements I {} static final class O extends A implements I {} } """); Files.createDirectories(classes); {//with --release: new JavacTask(tb) .options("--release", "21") .outdir(classes) .files(tb.findJavaFiles(src)) .run(Task.Expect.SUCCESS) .writeAll(); String javapOut = new JavapTask(tb) .options("-v") .classpath(classes.toString()) .classes("test.Test") .run() .getOutput(Task.OutputKind.DIRECT); if (!javapOut.contains("#25 = InvokeDynamic #0:#26 // #0:typeSwitch:(Ljava/lang/Object;I)I")) throw new AssertionError("typeSwitch for a version less than 23 should accept a static type of java.lang.Object"); } {//without: new JavacTask(tb) .outdir(classes) .files(tb.findJavaFiles(src)) .run(Task.Expect.SUCCESS) .writeAll(); String javapOut = new JavapTask(tb) .options("-v") .classpath(classes.toString()) .classes("test.Test") .run() .getOutput(Task.OutputKind.DIRECT); if (!javapOut.contains("#25 = InvokeDynamic #0:#26 // #0:typeSwitch:(Ltest/Test$I;I)I")) throw new AssertionError("typeSwitch from version 23 and beyond should accept a precise selector type"); } } }