MemoryLeak.java revision 11039:403e8685286d 
1/*
2 * Copyright (c) 2008, 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 6791458
27 * @summary Reading from closed input files leaks native memory
28 */
29
30import java.io.*;
31
32public class MemoryLeak {
33    public static void main(String[] args) throws Throwable {
34        byte[] bytes = new byte[1 << 20];
35        String dir = System.getProperty("test.src", ".");
36        File testFile = new File(dir, "input.txt");
37        FileInputStream s = new FileInputStream(testFile);
38        s.close();
39        for (int i = 0; i < 10000; i++) {
40            try {
41                s.read(bytes);
42                throw new Error("expected IOException");
43            } catch (IOException expected) {
44                /* OK */
45            } catch (OutOfMemoryError oome) {
46                System.out.printf("Got OutOfMemoryError, i=%d%n", i);
47                throw oome;
48            }
49        }
50    }
51}
52