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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
commit 0a580b313d
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test/jdk/java/awt/Graphics2D/DrawString/XRenderElt254TextTest.java Normal file
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/*
* Copyright (c) 2008, 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.
*/
import java.awt.*;
import java.awt.MultipleGradientPaint.*;
import java.awt.image.*;
import java.io.*;
import javax.imageio.*;
import javax.swing.*;
/**
* @test
* @key headful
* @bug 8028722
* @summary tests whether drawString with 254 characters causes the xrender
* pipeline to hang.
* @author ceisserer
*/
public class XRenderElt254TextTest extends Frame implements Runnable {
public volatile boolean success = false;
public void run() {
Image dstImg = getGraphicsConfiguration().createCompatibleVolatileImage(400, 400);
Graphics2D g = (Graphics2D) dstImg.getGraphics();
StringBuilder strBuilder = new StringBuilder(254);
for (int c = 0; c < 254; c++) {
strBuilder.append('a');
}
for (int i = 0; i < 100; i++) {
g.drawString(strBuilder.toString(), 20, 20);
Toolkit.getDefaultToolkit().sync();
}
success = true;
}
public static void main(String[] args) throws Exception {
XRenderElt254TextTest test = new XRenderElt254TextTest();
new Thread(test).start();
for (int i = 0; i < 30; i++) {
Thread.sleep(1000);
if (test.success) {
return; // Test finished successful
}
}
throw new RuntimeException("Test Failed");
}
}