unexpected exception when trying to delete way with 0 nodes

[richlv]

after some way manipulations (split & merge), josm ended up with a 0 node way. attempting to delete it resulted in an error.

Repository Root: ​http://josm.openstreetmap.de/svn
Build-Date: 2011-03-25 02:31:24
Last Changed Author: bastiK
Revision: 4002
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
URL: ​http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2011-03-24 10:27:00 +0100 (Thu, 24 Mar 2011)
Last Changed Rev: 4002

Identification: JOSM/1.5 (4002 en)
Memory Usage: 450 MB / 682 MB (256 MB allocated, but free)
Java version: 1.6.0_20, Sun Microsystems Inc., OpenJDK Server VM
Operating system: Linux
Dataset consistency test: No problems found

Plugin: PicLayer (25219)
Plugin: SimplifyArea (25560)
Plugin: livegps (25192)
Plugin: osmarender (25371)
Plugin: routing (25199)

java.lang.IllegalArgumentException: {Way id=-13961 version=0 MVDT nodes=[]} is already deleted

at org.openstreetmap.josm.command.DeleteCommand.executeCommand(DeleteCommand.java:117)
at org.openstreetmap.josm.command.SequenceCommand.executeCommand(SequenceCommand.java:53)
at org.openstreetmap.josm.data.UndoRedoHandler.addNoRedraw(UndoRedoHandler.java:36)
at org.openstreetmap.josm.data.UndoRedoHandler.add(UndoRedoHandler.java:58)
at org.openstreetmap.josm.actions.mapmode.DeleteAction.doActionPerformed(DeleteAction.java:142)
at org.openstreetmap.josm.actions.DeleteAction.actionPerformed(DeleteAction.java:28)
at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1664)
at javax.swing.JComponent.processKeyBinding(JComponent.java:2851)
at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:285)
at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:247)
at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2928)
at javax.swing.JComponent.processKeyBindings(JComponent.java:2920)
at javax.swing.JComponent.processKeyEvent(JComponent.java:2814)
at java.awt.Component.processEvent(Component.java:5980)
at java.awt.Container.processEvent(Container.java:2105)
at java.awt.Component.dispatchEventImpl(Component.java:4564)
at java.awt.Container.dispatchEventImpl(Container.java:2163)
at java.awt.Component.dispatchEvent(Component.java:4390)
at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1881)
at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:749)
at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1025)
at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:892)
at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:713)
at java.awt.Component.dispatchEventImpl(Component.java:4434)
at java.awt.Container.dispatchEventImpl(Container.java:2163)
at java.awt.Window.dispatchEventImpl(Window.java:2478)
at java.awt.Component.dispatchEvent(Component.java:4390)
at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:649)
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.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:116)
at java.awt.EventQueue$2.run(EventQueue.java:622)
at java.awt.EventQueue$2.run(EventQueue.java:620)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.AccessControlContext$1.doIntersectionPrivilege(AccessControlContext.java:105)
at java.awt.EventQueue.dispatchEvent(EventQueue.java:619)
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)

[mjulius]

It looks more like you have tried to delete a way that already was deleted.

Of course, this still should not result in an unhandled exception.

[skyper]

Replying to mjulius:

It looks more like you have tried to delete a way that already was deleted.

Of course, this still should not result in an unhandled exception.

You also get an exception, if you try to select a delete node.

Solve a duplicated node manually and then try to select the objects with validator. -> exception.