jdk8-mips64-public/langtools: test/tools/javap/StackMapTableTest.java@153d0309e698

     1 /*

     2  * Copyright (c) 2014, 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  */

    24 /*

    25  * @test

    26  * @bug 8033930 8033913

    27  * @summary bad formatting of StackMapTable entries

    28  */

    30 import java.io.*;

    31 import java.util.*;

    33 public class StackMapTableTest {

    34     public static void main(String... args) throws Exception {

    35         new StackMapTableTest().run();

    36     }

    38     void run() throws Exception {

    39         String testClasses = System.getProperty("test.classes");

    40         String out = javap("-v", "-classpath", testClasses, A.class.getName());

    42         String nl = System.getProperty("line.separator");

    43         out = out.replaceAll(nl, "\n");

    45         if (out.contains("\n\n\n"))

    46             error("double blank line found");

    48         String expect =

    49             "      StackMapTable: number_of_entries = 2\n" +

    50             "        frame_type = 252 /* append */\n" +

    51             "          offset_delta = 2\n" +

    52             "          locals = [ int ]\n" +

    53             "        frame_type = 250 /* chop */\n" +

    54             "          offset_delta = 18\n";

    55         if (!out.contains(expect))

    56             error("expected text not found");

    58         if (errors > 0)

    59             throw new Exception(errors + " errors found");

    60     }

    62     String javap(String... args) throws Exception {

    63         StringWriter sw = new StringWriter();

    64         PrintWriter out = new PrintWriter(sw);

    65         int rc = com.sun.tools.javap.Main.run(args, out);

    66         out.close();

    67         System.out.println(sw.toString());

    68         if (rc < 0)

    69             throw new Exception("javap exited, rc=" + rc);

    70         return sw.toString();

    71     }

    73     void error(String msg) {

    74         System.out.println("Error: " + msg);

    75         errors++;

    76     }

    78     int errors;

    80     /** Simple test class to run through javap. */

    81     public class A {

    82         public void a() {

    83             for (int i = 0; i < 10; i++) {

    84                 System.out.println(i);

    85             }

    86         }

    87         public void b() {

    88         }

    89         public void c() {

    90         }

    91     }

    92 }

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