1 /*

     2  * Copyright (c) 2014, 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 8032819

    27  * @summary Extra empty line between field declarations for the "-v -c" and "-v -l" combination of options

    28  * @modules jdk.jdeps/com.sun.tools.javap

    29  * @compile -g T8032819.java

    30  * @run main T8032819

    31  */

    32 

    33 import java.io.*;

    34 import java.util.*;

    35 

    36 public class T8032819 {

    37     static class Fields {

    38         int f1;

    39         int f2;

    40     }

    41 

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

    43         new T8032819().run();

    44     }

    45 

    46     void run() throws Exception {

    47         Class<?> clazz = Fields.class;

    48         test(clazz);

    49         test(clazz, "-c");

    50         test(clazz, "-l");

    51         test(clazz, "-l", "-c");

    52         test(clazz, "-v");

    53         test(clazz, "-v", "-c");

    54         test(clazz, "-v", "-l");

    55         test(clazz, "-v", "-l", "-c");

    56 

    57         if (errors > 0)

    58             throw new Exception(errors + " errors occurred");

    59     }

    60 

    61     static final String sep = System.getProperty("line.separator");

    62     static final String doubleBlankLine = sep + sep + sep;

    63 

    64     void test(Class<?> clazz, String... opts) throws Exception {

    65         System.err.println("test " + Arrays.asList(opts));

    66         List<String> args = new ArrayList<String>();

    67         args.addAll(Arrays.asList(opts));

    68         args.addAll(Arrays.asList("-classpath", System.getProperty("test.classes")));

    69         args.add(clazz.getName());

    70         StringWriter sw = new StringWriter();

    71         PrintWriter pw = new PrintWriter(sw);

    72         int rc = com.sun.tools.javap.Main.run(args.toArray(new String[args.size()]), pw);

    73         pw.close();

    74         String out = sw.toString();

    75         if (rc != 0)

    76             throw new Exception("javap failed unexpectedly: rc=" + rc);

    77 

    78         int count = 0;

    79         int i = out.indexOf(doubleBlankLine, 0);

    80         while (i != -1) {

    81             count++;

    82             i = out.indexOf(doubleBlankLine, i + doubleBlankLine.length());

    83         }

    84 

    85         if (count > 0)

    86             error(count + " double blank lines found");

    87     }

    88 

    89     void error(String msg) {

    90         System.err.println("Error: " + msg);

    91         errors++;

    92     }

    93 

    94     int errors = 0;

    95 }

    96