ArrayIndexOutOfBoundsException after panning

[blaz]

I receive pop-up that there was an error in JOSM. I can't reliably reproduce a problem, but it usually happens right after I pan the map (drag with right mouse button), when right mouse button is released.

This problem has been popping up for some time now. At least last three tested JOSM versions.

After I close exception pop-up, I can continue working without a problem. So far there were no undesirable side effects.

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2012-06-04 01:31:02
Last Changed Author: simon04
Revision: 5267
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2012-06-03 22:21:06 +0200 (Sun, 03 Jun 2012)
Last Changed Rev: 5267

Identification: JOSM/1.5 (5267 en)
Memory Usage: 721 MB / 730 MB (494 MB allocated, but free)
Java version: 1.6.0_24, Sun Microsystems Inc., OpenJDK 64-Bit Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: Create_grid_of_ways (28412)
Plugin: OpeningHoursEditor (28412)
Plugin: alignways (28412)
Plugin: lakewalker (28412)
Plugin: licensechange (28412)
Plugin: measurement (28412)
Plugin: multipoly-convert (28412)
Plugin: reverter (28412)
Plugin: undelete (28416)

java.lang.ArrayIndexOutOfBoundsException: -1
	at sun.java2d.pisces.Renderer$ScanlineIterator.next(Renderer.java:73)
	at sun.java2d.pisces.Renderer$ScanlineIterator.access$600(Renderer.java:32)
	at sun.java2d.pisces.Renderer._endRendering(Renderer.java:450)
	at sun.java2d.pisces.Renderer.endRendering(Renderer.java:534)
	at sun.java2d.pisces.PiscesRenderingEngine.getAATileGenerator(PiscesRenderingEngine.java:564)
	at sun.java2d.pipe.AAShapePipe.renderPath(AAShapePipe.java:151)
	at sun.java2d.pipe.AAShapePipe.draw(AAShapePipe.java:64)
	at sun.java2d.pipe.PixelToParallelogramConverter.draw(PixelToParallelogramConverter.java:148)
	at sun.java2d.SunGraphics2D.draw(SunGraphics2D.java:2392)
	at org.openstreetmap.josm.data.osm.visitor.paint.MapPainter.drawVirtualNodes(MapPainter.java:1103)
	at org.openstreetmap.josm.data.osm.visitor.paint.StyledMapRenderer.render(StyledMapRenderer.java:234)
	at org.openstreetmap.josm.gui.layer.OsmDataLayer.paint(OsmDataLayer.java:280)
	at org.openstreetmap.josm.gui.MapView.paintLayer(MapView.java:455)
	at org.openstreetmap.josm.gui.MapView.paint(MapView.java:534)
	at javax.swing.JComponent.paintChildren(JComponent.java:866)
	at javax.swing.JComponent.paint(JComponent.java:1038)
	at javax.swing.JComponent.paintToOffscreen(JComponent.java:5138)
	at javax.swing.RepaintManager$PaintManager.paintDoubleBuffered(RepaintManager.java:1454)
	at javax.swing.RepaintManager$PaintManager.paint(RepaintManager.java:1385)
	at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:318)
	at javax.swing.RepaintManager.paint(RepaintManager.java:1188)
	at javax.swing.JComponent._paintImmediately(JComponent.java:5086)
	at javax.swing.JComponent.paintImmediately(JComponent.java:4896)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:783)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:735)
	at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:677)
	at javax.swing.RepaintManager.access$700(RepaintManager.java:58)
	at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1593)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:226)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:647)
	at java.awt.EventQueue.access$000(EventQueue.java:96)
	at java.awt.EventQueue$1.run(EventQueue.java:608)
	at java.awt.EventQueue$1.run(EventQueue.java:606)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:617)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:275)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:200)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:190)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:185)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:177)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:138

[bastiK]

The code in MapPainter is pretty straightforward. Probably a strange Java Bug.