id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
12845	JOSM throws an exception after a decent amount of no interaction, and switching back to the desktop that had JOSM running	anonymous	team	"==== What steps will reproduce the problem?
1. Start JOSM
2. Edit and Upload
3. Wait some time (hours?), leave it running on some workspace
4. Switch back to workspace

==== What is the expected result?

No crash

==== What happens instead?

Crash

==== Please provide any additional information below. Attach a screenshot if possible.

{{{
URL:http://josm.openstreetmap.de/svn/trunk
Repository:UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Last:Changed Date: 2016-05-02 10:23:17 +0200 (Mon, 02 May 2016)
Build-Date:2016-05-03 01:31:45
Revision:10168
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10168 en_GB) Linux Debian GNU/Linux unstable (sid)
Memory Usage: 569 MB / 1744 MB (149 MB allocated, but free)
Java version: 1.8.0_91-8u91-b14-2-b14, Oracle Corporation, OpenJDK 64-Bit Server VM
VM arguments: [-Djava.net.preferIPv4Stack=true]
Dataset consistency test: No problems found

Plugins:
- HouseNumberTaggingTool (31772)
- OpeningHoursEditor (31772)
- PicLayer (32158)
- buildings_tools (31895)
- conflation (0.1.9)
- continuosDownload (1446070193)
- download_along (31772)
- ext_tools (31772)
- jts (31772)
- measurement (31895)
- merge-overlap (31967)
- public_transport (31895)
- reltoolbox (31895)
- reverter (32005)
- terracer (31895)
- turnrestrictions (31895)
- utilsplugin2 (32099)

Last errors/warnings:
- W: java.net.SocketTimeoutException: Read timed out
- W: java.net.SocketTimeoutException: Read timed out
- E: java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
- E: java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
- E: java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData

java.lang.ClassCastException: sun.awt.image.BufImgSurfaceData cannot be cast to sun.java2d.xr.XRSurfaceData
	at sun.java2d.xr.XRPMBlitLoops.cacheToTmpSurface(XRPMBlitLoops.java:145)
	at sun.java2d.xr.XrSwToPMBlit.Blit(XRPMBlitLoops.java:353)
	at sun.java2d.pipe.DrawImage.blitSurfaceData(DrawImage.java:959)
	at sun.java2d.pipe.DrawImage.renderImageCopy(DrawImage.java:577)
	at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:67)
	at sun.java2d.pipe.DrawImage.copyImage(DrawImage.java:1014)
	at sun.java2d.pipe.ValidatePipe.copyImage(ValidatePipe.java:186)
	at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3318)
	at sun.java2d.SunGraphics2D.drawImage(SunGraphics2D.java:3296)
	at org.openstreetmap.josm.gui.MapView.paint(MapView.java:834)
	at javax.swing.JComponent.paintChildren(JComponent.java:889)
	at javax.swing.JComponent.paint(JComponent.java:1065)
	at javax.swing.JComponent.paintToOffscreen(JComponent.java:5210)
	at javax.swing.BufferStrategyPaintManager.paint(BufferStrategyPaintManager.java:290)
	at javax.swing.RepaintManager.paint(RepaintManager.java:1272)
	at javax.swing.JComponent._paintImmediately(JComponent.java:5158)
	at javax.swing.JComponent.paintImmediately(JComponent.java:4969)
	at javax.swing.RepaintManager$4.run(RepaintManager.java:831)
	at javax.swing.RepaintManager$4.run(RepaintManager.java:814)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:814)
	at javax.swing.RepaintManager.paintDirtyRegions(RepaintManager.java:789)
	at javax.swing.RepaintManager.prePaintDirtyRegions(RepaintManager.java:738)
	at javax.swing.RepaintManager.access$1200(RepaintManager.java:64)
	at javax.swing.RepaintManager$ProcessingRunnable.run(RepaintManager.java:1732)
	at java.awt.event.InvocationEvent.dispatch(InvocationEvent.java:311)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:756)
	at java.awt.EventQueue.access$500(EventQueue.java:97)
	at java.awt.EventQueue$3.run(EventQueue.java:709)
	at java.awt.EventQueue$3.run(EventQueue.java:703)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:726)
	at org.GNOME.Accessibility.AtkWrapper$5.dispatchEvent(AtkWrapper.java:697)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:201)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:116)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:105)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:101)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:93)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:82)
}}}
"	defect	closed	normal		Core		duplicate	template_report