1 /*
2  * Copyright (c) 2012, 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 7186925
27  * @summary JavapTask passes null to java.io.Writer
28  * @modules jdk.jdeps/com.sun.tools.classfile
29  *          jdk.jdeps/com.sun.tools.javap
30  */
31 
32 import java.io.*;
33 import java.util.*;
34 import javax.tools.*;
35 import com.sun.tools.javap.*;
36 
37 public class T7186925
38 {
main(String... args)39     public static void main(String... args) {
40         new T7186925().run();
41     }
42 
run()43     void run() {
44         verify("java.lang.Object");
45         if (errors > 0)
46             throw new Error(errors + " found.");
47     }
48 
verify(String className)49     void verify(String className) {
50         try {
51             JavaFileManager fileManager = JavapFileManager.create(null, null);
52             JavaFileObject fo = fileManager.getJavaFileForInput(StandardLocation.PLATFORM_CLASS_PATH, className, JavaFileObject.Kind.CLASS);
53             if (fo == null) {
54                 error("Can't find " + className);
55             } else {
56                 JavapTask t = new JavapTask(null, fileManager, null);
57                 t.handleOptions(new String[] { "-sysinfo", className });
58                 JavapTask.ClassFileInfo cfInfo = t.read(fo);
59                 expectEqual(cfInfo.cf.byteLength(), cfInfo.size);
60             }
61         } catch (NullPointerException ee) {
62             ee.printStackTrace();
63             error("Exception: " + ee);
64         } catch (Exception ee) {
65             System.err.println("Caught exception: " + ee);
66         }
67     }
68 
expectEqual(int found, int expected)69     void expectEqual(int found, int expected) {
70         if (found != expected)
71             error("bad value found: " + found + " expected: " + expected);
72     }
73 
error(String msg)74     void error(String msg) {
75         System.err.println(msg);
76         errors++;
77     }
78 
79     int errors;
80 }
81