/* * Copyright (c) 2021, 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 8262891 * @summary Verify StackMapTable is sensible for simple ordinary switches * @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 * @run compile OrdinarySwitchStackMapTest.java * @run main OrdinarySwitchStackMapTest */ import java.nio.file.Path; import java.nio.file.Paths; import toolbox.JavapTask; import toolbox.Task; import toolbox.ToolBox; public class OrdinarySwitchStackMapTest { class Test { void method0(int i) throws Exception { switch (i) { case 0: System.err.println(0); break; case 1: System.err.println(1); break; default: System.err.println(2); break; } } } public static void main(String args[]) throws Exception { ToolBox tb = new ToolBox(); Path pathToClass = Paths.get(ToolBox.testClasses, "OrdinarySwitchStackMapTest$Test.class"); String javapOut = new JavapTask(tb) .options("-v") .classes(pathToClass.toString()) .run() .getOutput(Task.OutputKind.DIRECT); if (!javapOut.contains("StackMapTable: number_of_entries = 4")) throw new AssertionError("The number of entries of the stack map " + "table should be equal to 4"); } }