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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/ScaledThinLineTest.java Normal file
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/*
* Copyright (c) 2001, 2024, 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 4210466 4417756
* @summary thin lines are not draw correctly under large scales
*/
import java.awt.BasicStroke;
import java.awt.Color;
import java.awt.Graphics2D;
import java.awt.Shape;
import java.awt.image.BufferedImage;
import java.awt.geom.Ellipse2D;
public class ScaledThinLineTest {
public static void main(String[] args) {
ScaledThinLineTest c1 = new ScaledThinLineTest(200, 200);
ScaledThinLineTest c2 = new ScaledThinLineTest(1, 10000);
ScaledThinLineTest c3 = new ScaledThinLineTest(10000, 1);
ScaledThinLineTest c4 = new ScaledThinLineTest(0.01, 10000);
ScaledThinLineTest c5 = new ScaledThinLineTest(10000, 0.01);
compare(c1.bi, c2.bi);
compare(c2.bi, c3.bi);
compare(c3.bi, c4.bi);
compare(c4.bi, c5.bi);
}
private final Shape shape;
private final double scaleX,scaleY;
private BufferedImage bi = null;
public ScaledThinLineTest(double width, double height) {
shape = new Ellipse2D.Double(0.25*width, 0.25*height, width, height);
scaleX = 200/width;
scaleY = 200/height;
int iw = 300, ih = 300;
bi = new BufferedImage(iw, ih, BufferedImage.TYPE_INT_RGB);
Graphics2D g2 = bi.createGraphics();
g2.setColor(Color.white);
g2.fillRect(0, 0, iw, ih);
g2.setColor(Color.black);
g2.scale(scaleX,scaleY);
g2.setStroke(new BasicStroke(0));
g2.draw(shape);
}
static void compare(BufferedImage i1, BufferedImage i2) {
int w = i1.getWidth(), h = i1.getHeight();
for (int y = 0; y < h; y++) {
for (int x = 0; x < w; x++) {
int p1 = i1.getRGB(x, y);
int p2 = i2.getRGB(x, y);
if (p1 != p2) {
System.out.println("images differ at " + x + " " + y);
}
}
}
}
}