1/*
2 * Copyright (c) 2004, 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/* @test
25 * @bug 5041041
26 * @summary Test BufferedInputStream read of zero byte array
27 */
28
29import java.io.*;
30
31/**
32 * This class tests to see if BufferedInputStream of zero length array
33 * invokes the read method or not. Invoking read could block which is
34 * incompatible behavior for zero length array.
35 */
36public class ReadZeroBytes {
37
38    public static void main( String argv[] ) throws Exception {
39        BufferedInputStream in = new BufferedInputStream(
40            new ThrowingInputStream());
41        in.read(new byte[0], 0, 0);
42    }
43}
44
45class ThrowingInputStream extends InputStream {
46
47    public ThrowingInputStream() {
48    }
49    public int read() throws IOException {
50        return 0;
51    }
52    public int read(byte[] b, int off, int len) throws IOException {
53        throw new RuntimeException("Read invoked for len == 0");
54    }
55}
56