1 /*
   2  * Copyright (c) 2012, 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 7186925
  27  * @summary JavapTask passes null to java.io.Writer
  28  * @modules jdk.compiler/com.sun.tools.classfile
  29  */
  30 
  31 import java.io.*;
  32 import java.util.*;
  33 import javax.tools.*;
  34 import com.sun.tools.javap.*;
  35 
  36 public class T7186925
  37 {
  38     public static void main(String... args) {
  39         new T7186925().run();
  40     }
  41 
  42     void run() {
  43         verify("java.lang.Object");
  44         if (errors > 0)
  45             throw new Error(errors + " found.");
  46     }
  47 
  48     void verify(String className) {
  49         try {
  50             JavaFileManager fileManager = JavapFileManager.create(null, null);
  51             JavaFileObject fo = fileManager.getJavaFileForInput(StandardLocation.PLATFORM_CLASS_PATH, className, JavaFileObject.Kind.CLASS);
  52             if (fo == null) {
  53                 error("Can't find " + className);
  54             } else {
  55                 JavapTask t = new JavapTask(null, fileManager, null);
  56                 t.handleOptions(new String[] { "-sysinfo", className });
  57                 JavapTask.ClassFileInfo cfInfo = t.read(fo);
  58                 expectEqual(cfInfo.cf.byteLength(), cfInfo.size);
  59             }
  60         } catch (NullPointerException ee) {
  61             ee.printStackTrace();
  62             error("Exception: " + ee);
  63         } catch (Exception ee) {
  64             System.err.println("Caught exception: " + ee);
  65         }
  66     }
  67 
  68     void expectEqual(int found, int expected) {
  69         if (found != expected)
  70             error("bad value found: " + found + " expected: " + expected);
  71     }
  72 
  73     void error(String msg) {
  74         System.err.println(msg);
  75         errors++;
  76     }
  77 
  78     int errors;
  79 }