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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.
This commit is contained in:
russell@unturf.com 2026-03-26 17:11:57 -04:00
commit 0a580b313d
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64
test/jdk/java/lang/instrument/RedefineBigClassApp.java Normal file
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/*
* Copyright (c) 2011, 2013, 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.
*/
import java.io.*;
public class RedefineBigClassApp {
/**
* Memory leak is assumed, if application consumes more than specified amount of memory during its execution.
* The number is given in KB.
*/
private static final long MEM_LEAK_THRESHOLD = 32 * 1024; // 32MB
public static void main(String[] args) throws Exception {
System.out.println("Creating instance of " +
RedefineBigClassAgent.clz);
RedefineBigClassAgent.clz.newInstance();
// Do a short warmup before creating the NMT baseline
try {
Thread.sleep(5 * 1000);
} catch (InterruptedException ie) {
}
NMTHelper.baseline();
int count = 0;
while (!RedefineBigClassAgent.doneRedefining) {
System.out.println("App loop count: " + ++count);
try {
Thread.sleep(10 * 1000);
} catch (InterruptedException ie) {
}
}
System.out.println("App looped " + count + " times.");
long committedDiff = NMTHelper.committedDiff();
if (committedDiff > MEM_LEAK_THRESHOLD) {
throw new Exception("FAIL: Committed memory usage increased by " + committedDiff + "KB " +
"(greater than " + MEM_LEAK_THRESHOLD + "KB)");
}
System.err.println("PASS: Committed memory usage increased by " + committedDiff + "KB " +
"(not greater than " + MEM_LEAK_THRESHOLD + "KB)");
}
}