1 /*
   2  * Copyright (c) 2014, 2015, 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.compiler
  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