1/*
2 * Copyright (c) 2013, 2016, 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 4955930
27 * @summary The "method0" StackMap attribute should have two entries instead of three
28 * @library /tools/lib
29 * @modules jdk.compiler/com.sun.tools.javac.api
30 *          jdk.compiler/com.sun.tools.javac.main
31 *          jdk.jdeps/com.sun.tools.javap
32 * @build toolbox.ToolBox toolbox.JavapTask
33 * @run compile StackMapTest.java
34 * @run main StackMapTest
35 */
36
37import java.nio.file.Path;
38import java.nio.file.Paths;
39
40import toolbox.JavapTask;
41import toolbox.Task;
42import toolbox.ToolBox;
43
44// Original test: test/tools/javac/stackmap/T4955930.sh
45public class StackMapTest {
46
47    class Test {
48        void method0(boolean aboolean) throws Exception {
49            label_0:
50            while (true) {
51                if (aboolean) ;
52                else break label_0;
53            }
54        }
55    }
56
57    public static void main(String args[]) throws Exception {
58        ToolBox tb = new ToolBox();
59        Path pathToClass = Paths.get(ToolBox.testClasses, "StackMapTest$Test.class");
60        String javapOut = new JavapTask(tb)
61                .options("-v")
62                .classes(pathToClass.toString())
63                .run()
64                .getOutput(Task.OutputKind.DIRECT);
65
66        if (!javapOut.contains("StackMapTable: number_of_entries = 2"))
67            throw new AssertionError("The number of entries of the stack map "
68                    + "table should be equal to 2");
69    }
70
71}
72