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 33import java.io.*; 34import java.util.*; 35 36public 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 97