FULL PRODUCT VERSION :
java version "1.6.0_23"
Java(TM) SE Runtime Environment (build 1.6.0_23-b05)
Java HotSpot(TM) Client VM (build 19.0-b09, mixed mode, sharing)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows [Version 6.1.7600]


EXTRA RELEVANT SYSTEM CONFIGURATION :
Windows 7 x64

A DESCRIPTION OF THE PROBLEM :
While testing a bug reported by one of our users, we were able to isolate a bug in DuctusShapeRenderer which causes 100% CPU

Crashes Java.

Two conditions need to be met:
- Drawing with a BasicStroke (see example code)
- Drawing large x/y values

Here's a Thread dump I took while the error was happening:


Thread [AWT-EventQueue-0] (Suspended)
PathDasher.appendLine(float, float) line: not available [native method]
Rasterizer.appendLine(float, float) line: 462
DuctusRenderer.createShapeRasterizer(PathIterator, AffineTransform, BasicStroke, boolean, boolean, float) line: 495
DuctusShapeRenderer.renderPath(SunGraphics2D, Shape, BasicStroke) line: 97
DuctusShapeRenderer.draw(SunGraphics2D, Shape) line: 46
PixelToParallelogramConverter.draw(SunGraphics2D, Shape) line: 130
SunGraphics2D.draw(Shape) line: 2618
ShapeDrawingUI.render(Graphics2D, ColorStyle) line: 103
JC2DrawingUIFactory.createUIAndDrawLine(Drawing, Graphics2D, BasicStroke, ColorStyle, int, int, int, int, String) line: 99
JC2DrawingUIFactory.drawLine(Graphics, int, int, int, int, ColorStyle, StrokeStyle, boolean, String, Drawing, Vector) line: 171
Trendline.draw(DrawView, Graphics, int, Vector) line: 149
SingleGraphRenderer.renderUserDrawings(Graphics, boolean, Vector) line: 710
SingleGraphRenderer.render(Graphics2D) line: 655
MultiGraphRenderer.render(Graphics2D) line: 255
GraphManager.render(Graphics2D) line: 932
GraphPanel.paintComponent(Graphics) line: 576
GraphPanel(JComponent).paint(Graphics) line: 1029
PContainer(JComponent).paintChildren(Graphics) line: 862
PContainer(JComponent).paint(Graphics) line: 1038
JPanel(JComponent).paintChildren(Graphics) line: 862
JPanel(JComponent).paint(Graphics) line: 1038
PSplitPane(JComponent).paintChildren(Graphics) line: 862
PSplitPane(JSplitPane).paintChildren(Graphics) line: 1030
PSplitPane(JComponent).paint(Graphics) line: 1038
PContainer(JComponent).paintChildren(Graphics) line: 862
PContainer(JComponent).paint(Graphics) line: 1038
PContainer(JComponent)._paintImmediately(int, int, int, int) line: 5098
PContainer(JComponent).paintImmediately(int, int, int, int) line: 4882
RepaintManager.paintDirtyRegions(Map<Component,Rectangle>) line: 811
RepaintManager.paintDirtyRegions() line: 713
RepaintManager.seqPaintDirtyRegions() line: 693
SystemEventQueueUtilities$ComponentWorkRequest.run() line: 125
InvocationEvent.dispatch() line: 209
EventQueue.dispatchEvent(AWTEvent) line: 633
EventDispatchThread.pumpOneEventForFilters(int) line: 296
EventDispatchThread.pumpEventsForFilter(int, Conditional, EventFilter) line: 211
EventDispatchThread.pumpEventsForHierarchy(int, Conditional, Component) line: 201
EventDispatchThread.pumpEvents(int, Conditional) line: 196
EventDispatchThread.pumpEvents(Conditional) line: 188
EventDispatchThread.run() line: 122


STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
run the attached code

EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
No crash, rendering what's visible of the line
ACTUAL -
Java becomes unresponsive, hogs 100% CPU

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------
package net.prophet;

import java.awt.BasicStroke;
import java.awt.BorderLayout;
import java.awt.Graphics;
import java.awt.Graphics2D;
import java.awt.Stroke;
import java.awt.geom.Line2D;

import javax.swing.JFrame;
import javax.swing.JPanel;

public class DrawingTest extends JPanel {

public static void main(String[] args) {
JFrame fr = new JFrame();
fr.getContentPane().setLayout(new BorderLayout());
DrawingTest drawingTest = new DrawingTest();
fr.getContentPane().add(drawingTest, BorderLayout.CENTER);
fr.setSize(400, 400);
fr.setVisible(true);
}

@Override
public void paintComponent(Graphics g) {
Graphics2D g2 = (Graphics2D) g;
    
// clip - doesn't help
g2.setClip(0, 0, getWidth(), getHeight());

// this part is just testing the drawing - so I can see I am actually drawing something
// IGNORE
/**
     g.setColor(Color.GREEN);
     g.fillRect(0, 0, getWidth(), getHeight());
     g.setColor(Color.black);
        g2.setStroke(new BasicStroke(2));
     g2.draw(new Line2D.Double(20, 20, 200, 20));
    
     /**/

// Now we re-create the exact conditions that lead to the system crash in the JDK

// BUG HERE - setting the stroke leads to the crash

     Stroke stroke = new BasicStroke(2.0f, 1, 0, 1.0f, new float[] {0.0f, 4.0f}, 0.0f);
     g2.setStroke(stroke);
    
     // NOTE: Large values to trigger crash / infinite loop?
     g2.draw(new Line2D.Double(4.0, 1.794369841E9, 567.0, -2.147483648E9));
    }



}

---------- END SOURCE ----------