1 /*
2  * Copyright (c) 2013, 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.
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19  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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22  */
23 
24 /*
25  * @test
26  * @bug 8028780
27  * @summary JDK KRB5 module throws OutOfMemoryError when CCache is corrupt
28  * @run main/othervm -Xmx8m CorruptedCC
29  */
30 import java.nio.file.Files;
31 import java.nio.file.Paths;
32 import sun.security.krb5.internal.ccache.CredentialsCache;
33 
34 public class CorruptedCC {
main(String[] args)35     public static void main(String[] args) throws Exception {
36         for (int i=0; i<TimeInCCache.ccache.length; i++) {
37             byte old = TimeInCCache.ccache[i];
38             TimeInCCache.ccache[i] = 0x7f;
39             Files.write(Paths.get("tmpcc"), TimeInCCache.ccache);
40             // The next line will return null for I/O issues. That's OK.
41             CredentialsCache.getInstance("tmpcc");
42             TimeInCCache.ccache[i] = old;
43         }
44     }
45 }
46