T7186925.java revision 3294:9adfb22ff08f 
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
32import java.io.*;
33import java.util.*;
34import javax.tools.*;
35import com.sun.tools.javap.*;
36
37public class T7186925
38{
39    public static void main(String... args) {
40        new T7186925().run();
41    }
42
43    void run() {
44        verify("java.lang.Object");
45        if (errors > 0)
46            throw new Error(errors + " found.");
47    }
48
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
69    void expectEqual(int found, int expected) {
70        if (found != expected)
71            error("bad value found: " + found + " expected: " + expected);
72    }
73
74    void error(String msg) {
75        System.err.println(msg);
76        errors++;
77    }
78
79    int errors;
80}
81