/* * Copyright (c) 2020, 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 8258662 * @summary Types.isCastable crashes when involving sealed interface and type variable. * @library /tools/lib * @modules jdk.compiler/com.sun.tools.javac.api * jdk.compiler/com.sun.tools.javac.main * @build toolbox.ToolBox toolbox.JavacTask * @run main T8258662 */ import java.util.List; import toolbox.ToolBox; import toolbox.TestRunner; import toolbox.JavacTask; public class T8258662 extends TestRunner { private ToolBox tb; public T8258662() { super(System.err); tb = new ToolBox(); } public static void main(String[] args) throws Exception { T8258662 t = new T8258662(); t.runTests(); } @Test public void testSealedClassIsCastable() throws Exception { String code = """ class Test8258662 { sealed interface I<T> { final class C implements I<Object> { } } static <T extends I<Object>> void f(T x) { if (x instanceof I<Object>) { } } }"""; new JavacTask(tb) .sources(code) .classpath(".") .options("--enable-preview", "-source", Integer.toString(Runtime.version().feature())) .run() .writeAll(); } }