1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
/*
* Copyright (c) 2016, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
/* @test
* @bug 8163518
* @summary Integer overflow when reading in large buffer
* @requires (sun.arch.data.model == "64" & os.maxMemory > 4g)
* @run main/othervm -Xmx4g OverflowInRead
*/
import java.io.StringBufferInputStream;
public class OverflowInRead {
public static void main(String[] args) throws Exception {
String s = "_123456789_123456789_123456789_123456789"; // s.length() > 33
try (StringBufferInputStream sbis = new StringBufferInputStream(s)) {
int len1 = 33;
byte[] buf1 = new byte[len1];
if (sbis.read(buf1, 0, len1) != len1)
throw new Exception("Expected to read " + len1 + " bytes");
int len2 = Integer.MAX_VALUE - 32;
byte[] buf2 = new byte[len2];
int expLen2 = s.length() - len1;
if (sbis.read(buf2, 0, len2) != expLen2)
throw new Exception("Expected to read " + expLen2 + " bytes");
}
}
}
|
