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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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117
test/jdk/sun/java2d/DirectX/InfiniteValidationLoopTest/InfiniteValidationLoopTest.java Normal file
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/*
* Copyright (c) 2007, 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
* @key headful
* @bug 6648018
* @summary Tests that we don't run into infinite validation loop when copying
a VolatileImage to the screen
* @author Dmitri.Trembovetski@sun.com: area=Graphics
* @run main/othervm InfiniteValidationLoopTest
* @run main/othervm -Dsun.java2d.d3d=false InfiniteValidationLoopTest
*/
import java.awt.Color;
import java.awt.Frame;
import java.awt.Graphics;
import java.awt.GraphicsConfiguration;
import static java.awt.image.VolatileImage.*;
import java.awt.image.VolatileImage;
import java.util.concurrent.CountDownLatch;
public class InfiniteValidationLoopTest extends Frame {
private static volatile boolean failed = false;
private static final int LOOP_THRESHOLD = 50;
private static volatile CountDownLatch latch;
private VolatileImage vi;
public InfiniteValidationLoopTest() {
super("InfiniteValidationLoopTest");
}
@Override
public void paint(Graphics g) {
try {
runTest(g);
} finally {
latch.countDown();
}
}
private void runTest(Graphics g) {
int status = IMAGE_OK;
int count1 = 0;
do {
GraphicsConfiguration gc = getGraphicsConfiguration();
int count2 = 0;
while (vi == null || (status = vi.validate(gc)) != IMAGE_OK) {
if (++count2 > LOOP_THRESHOLD) {
System.err.println("Infinite loop detected: count2="+count2);
failed = true;
return;
}
if (vi == null || status == IMAGE_INCOMPATIBLE) {
if (vi != null) { vi.flush(); vi = null; }
vi = gc.createCompatibleVolatileImage(100, 100);
continue;
}
if (status == IMAGE_RESTORED) {
Graphics gg = vi.getGraphics();
gg.setColor(Color.green);
gg.fillRect(0, 0, vi.getWidth(), vi.getHeight());
break;
}
}
g.drawImage(vi, getInsets().left, getInsets().top, null);
if (++count1 > LOOP_THRESHOLD) {
System.err.println("Infinite loop detected: count1="+count1);
failed = true;
return;
}
} while (vi.contentsLost());
}
public static void main(String[] args) {
latch = new CountDownLatch(1);
InfiniteValidationLoopTest t1 = new InfiniteValidationLoopTest();
t1.pack();
t1.setSize(200, 200);
t1.setVisible(true);
try { latch.await(); } catch (InterruptedException ex) {}
t1.dispose();
latch = new CountDownLatch(1);
t1 = new InfiniteValidationLoopTest();
t1.pack();
t1.setSize(50, 50);
t1.setVisible(true);
try { latch.await(); } catch (InterruptedException ex) {}
t1.dispose();
if (failed) {
throw new
RuntimeException("Failed: infinite validattion loop detected");
}
System.out.println("Test PASSED");
}
}