NPE: Failed to retrieve atom name

[naoliv]

I pressed Alt+A and got this:

Atom was 0
ERRO: java.lang.NullPointerException: Failed to retrieve atom name.
java.lang.NullPointerException: Failed to retrieve atom name.
	at sun.awt.X11.XlibWrapper.XGetAtomName(Native Method)
	at sun.awt.X11.XAtom.getName(XAtom.java:186)
	at sun.awt.X11.XDataTransferer.getTargetNameForAtom(XDataTransferer.java:166)
	at sun.awt.X11.XDataTransferer.getNativeForFormat(XDataTransferer.java:155)
	at sun.awt.datatransfer.DataTransferer.getFlavorsForFormats(DataTransferer.java:804)
	at sun.awt.datatransfer.ClipboardTransferable.<init>(ClipboardTransferable.java:89)
	at sun.awt.X11.XClipboard.getContents(XClipboard.java:106)
	at org.openstreetmap.josm.gui.tagging.ac.AutoCompletingComboBox$AutoCompletingComboBoxDocument.insertString(AutoCompletingComboBox.java:137)
	at javax.swing.text.AbstractDocument.replace(AbstractDocument.java:670)
	at javax.swing.text.JTextComponent.setText(JTextComponent.java:1718)
	at javax.swing.plaf.metal.MetalComboBoxEditor$1.setText(MetalComboBoxEditor.java:61)
	at javax.swing.plaf.basic.BasicComboBoxEditor.setItem(BasicComboBoxEditor.java:82)
	at org.openstreetmap.josm.gui.tagging.ac.AutoCompletingComboBox.configureEditor(AutoCompletingComboBox.java:233)
	at javax.swing.plaf.basic.BasicComboBoxUI$Handler.contentsChanged(BasicComboBoxUI.java:1861)
	at javax.swing.AbstractListModel.fireContentsChanged(AbstractListModel.java:118)
	at javax.swing.DefaultComboBoxModel.setSelectedItem(DefaultComboBoxModel.java:93)
	at javax.swing.JComboBox.setSelectedItem(JComboBox.java:578)
	at org.openstreetmap.josm.gui.tagging.ac.AutoCompletingComboBox.setSelectedItem(AutoCompletingComboBox.java:247)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper$AddTagsDialog.<init>(TagEditHelper.java:585)
	at org.openstreetmap.josm.gui.dialogs.properties.TagEditHelper.addTag(TagEditHelper.java:132)
	at org.openstreetmap.josm.gui.dialogs.properties.PropertiesDialog$AddAction.actionPerformed(PropertiesDialog.java:1012)
	at javax.swing.SwingUtilities.notifyAction(SwingUtilities.java:1662)
	at javax.swing.JComponent.processKeyBinding(JComponent.java:2870)
	at javax.swing.KeyboardManager.fireBinding(KeyboardManager.java:307)
	at javax.swing.KeyboardManager.fireKeyboardAction(KeyboardManager.java:263)
	at javax.swing.JComponent.processKeyBindingsForAllComponents(JComponent.java:2962)
	at javax.swing.JComponent.processKeyBindings(JComponent.java:2954)
	at javax.swing.JComponent.processKeyEvent(JComponent.java:2833)
	at java.awt.Component.processEvent(Component.java:6293)
	at java.awt.Container.processEvent(Container.java:2229)
	at java.awt.Component.dispatchEventImpl(Component.java:4872)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Component.dispatchEvent(Component.java:4698)
	at java.awt.KeyboardFocusManager.redispatchEvent(KeyboardFocusManager.java:1887)
	at java.awt.DefaultKeyboardFocusManager.dispatchKeyEvent(DefaultKeyboardFocusManager.java:762)
	at java.awt.DefaultKeyboardFocusManager.preDispatchKeyEvent(DefaultKeyboardFocusManager.java:1027)
	at java.awt.DefaultKeyboardFocusManager.typeAheadAssertions(DefaultKeyboardFocusManager.java:899)
	at java.awt.DefaultKeyboardFocusManager.dispatchEvent(DefaultKeyboardFocusManager.java:727)
	at java.awt.Component.dispatchEventImpl(Component.java:4742)
	at java.awt.Container.dispatchEventImpl(Container.java:2287)
	at java.awt.Window.dispatchEventImpl(Window.java:2719)
	at java.awt.Component.dispatchEvent(Component.java:4698)
	at java.awt.EventQueue.dispatchEventImpl(EventQueue.java:740)
	at java.awt.EventQueue.access$300(EventQueue.java:103)
	at java.awt.EventQueue$3.run(EventQueue.java:699)
	at java.awt.EventQueue$3.run(EventQueue.java:697)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:87)
	at java.awt.EventQueue$4.run(EventQueue.java:713)
	at java.awt.EventQueue$4.run(EventQueue.java:711)
	at java.security.AccessController.doPrivileged(Native Method)
	at java.security.ProtectionDomain$1.doIntersectionPrivilege(ProtectionDomain.java:76)
	at java.awt.EventQueue.dispatchEvent(EventQueue.java:710)
	at java.awt.EventDispatchThread.pumpOneEventForFilters(EventDispatchThread.java:242)
	at java.awt.EventDispatchThread.pumpEventsForFilter(EventDispatchThread.java:161)
	at java.awt.EventDispatchThread.pumpEventsForHierarchy(EventDispatchThread.java:150)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:146)
	at java.awt.EventDispatchThread.pumpEvents(EventDispatchThread.java:138)
	at java.awt.EventDispatchThread.run(EventDispatchThread.java:91)

JOSM

Repository Root: http://josm.openstreetmap.de/svn
Build-Date: 2015-05-26 01:31:54
Last Changed Author: Don-vip
Revision: 8426
Repository UUID: 0c6e7542-c601-0410-84e7-c038aed88b3b
Relative URL: ^/trunk
URL: http://josm.openstreetmap.de/svn/trunk
Last Changed Date: 2015-05-26 01:37:50 +0200 (Tue, 26 May 2015)
Last Changed Rev: 8426

Identification: JOSM/1.5 (8426 pt_BR) Linux Debian GNU/Linux testing (stretch)
Memory Usage: 1525 MB / 10206 MB (603 MB allocated, but free)
Java version: 1.7.0_75, Oracle Corporation, OpenJDK 64-Bit Server VM
Java package: openjdk-7-jre:amd64-7u75-2.5.4-2
VM arguments: [-Dawt.useSystemAAFontSettings=on]
Dataset consistency test: No problems found

Plugins:
- Create_grid_of_ways (30892)
- OpeningHoursEditor (30962)
- PicLayer (31114)
- SimplifyArea (30962)
- buildings_tools (31120)
- conflation (0.1.7)
- contourmerge (1013)
- download_along (30892)
- editgpx (30892)
- geotools (31068)
- importvec (30892)
- jts (31002)
- log4j (30892)
- measurement (30892)
- merge-overlap (30988)
- opendata (31116)
- pbf (31010)
- pdfimport (30892)
- poly (31056)
- reverter (31120)
- scripting (30710)
- todo (29154)
- turnrestrictions (31034)
- undelete (30892)
- utilsplugin2 (31153)

I can't reproduce it again.

[Don-vip]

It's ​javabug:6322854 again. We probably need to implement the workaround of r5752 / r8038 for another widget.

[Don-vip]

Am I right if assume the bug occurred right after you pasted a key/value?

[naoliv]

I had a lot of data in JOSM, if this makes some difference.
With a node selected, pressed Alt+A and started typying p and l (to type place). Since it was a little slow (due to the amount of data) it seems that I pressed pl before the dialog was available (and then the error occurred)

[Don-vip]

In 8429/josm:

fix #11485 - robustness to JDK-6322854 when dealing with system selection