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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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test/jdk/java/io/PipedInputStream/WriterLoop.java Normal file
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/*
* Copyright (c) 2005, 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 6219755
* @summary Write end loops infinitely when the
* buffer is full and the read end has closed.
*/
import java.io.*;
public class WriterLoop extends Thread {
static PipedOutputStream out;
static PipedInputStream in;
public void run() {
try {
System.out.println("Writer started.");
// without the fix, this test will hang at this point,
// i.e inside the call to write()
out.write(new byte[64*1024]);
} catch (Throwable e) {
// with the fix an IOException is caught
System.out.println("Writer exception:");
e.printStackTrace();
} finally {
System.out.println("Writer done.");
}
}
public static void main(String args[]) throws Exception {
in = new PipedInputStream();
out = new PipedOutputStream(in);
WriterLoop writer = new WriterLoop();
writer.start();
try {
System.out.println("Reader reading...");
in.read(new byte[2048]);
System.out.println("Reader closing stream...");
in.close();
System.out.println("Reader sleeping 3 seconds...");
Thread.sleep(3000);
} catch (Throwable e) {
System.out.println("Reader exception:");
e.printStackTrace();
} finally {
System.out.println("Active threads:");
Thread[] threads = new Thread[Thread.activeCount()];
Thread.enumerate(threads);
for (int i = 0; i < threads.length; i++) {
System.out.println(" " + threads[i]);
}
System.out.println("Waiting for writer...");
writer.join();
System.out.println("Done.");
}
}
}