NPE in MoveCommand.<init> via SelectAction.mouseDragged

[anonymous]

What steps will reproduce the problem?

What is the expected result?

What happens instead?

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: 2016-09-06 00:16:07 +0200 (Tue, 06 Sep 2016)
Build-Date:2016-09-05 22:21:00
Revision:10966
Relative:URL: ^/trunk

Identification: JOSM/1.5 (10966 en) Windows 7 64-Bit
Memory Usage: 177 MB / 247 MB (90 MB allocated, but free)
Java version: 1.8.0_91-b14, Oracle Corporation, Java HotSpot(TM) Client VM
Screen: \Display0 1920x1080
Maximum Screen Size: 1920x1080
Dataset consistency test: No problems found

Plugins:
+ buildings_tools (32796)

Last errors/warnings:
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet
- W: java.io.IOException: Attribution is not loaded yet


=== REPORTED CRASH DATA ===
BugReportExceptionHandler#handleException:
No data collected.

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (17) of main
java.lang.NullPointerException
	at org.openstreetmap.josm.command.MoveCommand.<init>(MoveCommand.java:119)
	at org.openstreetmap.josm.actions.mapmode.SelectAction$VirtualManager.createMiddleNodeFromVirtual(SelectAction.java:1235)
	at org.openstreetmap.josm.actions.mapmode.SelectAction$VirtualManager.access$800(SelectAction.java:1158)
	at org.openstreetmap.josm.actions.mapmode.SelectAction.mouseDragged(SelectAction.java:554)
	at java.awt.AWTEventMulticaster.mouseDragged(Unknown Source)
	at java.awt.AWTEventMulticaster.mouseDragged(Unknown Source)
	at java.awt.Component.processMouseMotionEvent(Unknown Source)
	at javax.swing.JComponent.processMouseMotionEvent(Unknown Source)
	at java.awt.Component.processEvent(Unknown Source)
	at java.awt.Container.processEvent(Unknown Source)
	at java.awt.Component.dispatchEventImpl(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.LightweightDispatcher.retargetMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.processMouseEvent(Unknown Source)
	at java.awt.LightweightDispatcher.dispatchEvent(Unknown Source)
	at java.awt.Container.dispatchEventImpl(Unknown Source)
	at java.awt.Window.dispatchEventImpl(Unknown Source)
	at java.awt.Component.dispatchEvent(Unknown Source)
	at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
	at java.awt.EventQueue.access$500(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.awt.EventQueue$3.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.awt.EventQueue$4.run(Unknown Source)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$JavaSecurityAccessImpl.doIntersectionPrivilege(Unknown Source)
	at java.awt.EventQueue.dispatchEvent(Unknown Source)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
	at java.awt.EventDispatchThread.run(Unknown Source)

[simon04]

Tickets related to SelectAction and SelectAction$VirtualManager in the stack trace: #13537, #13677, #13724.

[simon04]

In 11070/josm:

see #13724 - refactor constructors and add parameters validation to detect root cause

[simon04]

Milestone renamed

[simon04]

Michael, is this related to #13665 (since #13537/#13677 also involve SelectAction/SelectAction$VirtualManager)?

[michael2402]

In 11140/josm:

See #13724: Add validation to AddCommand, too.

[michael2402]

#13665 -> probably no. That issue has to do with rendering a node that is marked as deleted but not incomplete and that is not removed from a way during the data update.

#13729 -> this one looks related, but I don't see how [11079] solved this issue.

[michael2402]

I could not find a way to reproduce this. I don't even know if it may happen in the current release of JOSM. We need to wait for someone to trigger this one again and send an error report with the new debugging data.

[Don-vip]

Ticket #14712 has been marked as a duplicate of this ticket.

[Don-vip]

startEn appears to be null.

[Don-vip]

Ticket #15087 has been marked as a duplicate of this ticket.

[Don-vip]

In 14343/josm:

fix #13724 - NPE