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undefect. CWE-407 — 63 sites patched across 27 ecosystems

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Authors: russell@unturf.com · brackishbert@gmail.com · foxhop.net · TimeHexOn.com

Patches, unit tests, benchmarks, whitepaper, and outreach briefs.
Public domain — no copyright claimed. Use freely.
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russell@unturf.com 2026-03-26 17:11:57 -04:00
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65
test/jdk/sun/nio/cs/DecoderOverflow.java Normal file
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/*
* Copyright (c) 2008, 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 5101128
@summary Check behavior of CharsetDecoder.decode when overflow occurs
@author Martin Buchholz
*/
import java.util.*;
import java.nio.*;
import java.nio.charset.*;
public class DecoderOverflow {
static int failures = 0;
public static void main(String[] args) throws Exception {
for (String csn : Charset.availableCharsets().keySet()) {
try {
test(csn);
} catch (Throwable t) {
System.out.println(csn);
t.printStackTrace();
failures++;
}
}
if (failures > 0)
throw new Exception(failures + " charsets failed");
}
static void test(String encoding) throws Exception {
String text = "Vote for Duke!";
Charset cs = Charset.forName(encoding);
if (! cs.canEncode() || ! cs.newEncoder().canEncode('.')) return;
ByteBuffer in = ByteBuffer.wrap(text.getBytes(encoding));
CharBuffer out = CharBuffer.allocate(text.length()/2);
CoderResult result = cs.newDecoder().decode(in, out, true);
if (out.hasRemaining() || ! result.isOverflow())
throw new Exception
("out.hasRemaining()=" + out.hasRemaining() +
" result.isOverflow()=" + result.isOverflow() +
" in.capacity()=" + in.capacity() +
" encoding=" + encoding);
}
}