Exception when validating

[nkamapper]

What steps will reproduce the problem?

1. Download this data from Overpass:

   [out:xml][timeout:90];
   {{geocodeArea:Sigdal}}->.searchArea;
   (
     nwr["waterway"](area.searchArea);
   );
   (._;>;<;);
   out meta;
   

2. Hit the "Validation" button.

What is the expected result?

Normal validation.

What happens instead?

JOSM reports that an unexpected exception occurred (but is able to continue).

The warning reported below is part of a boundary relation: ​https://www.openstreetmap.org/way/50694770

Perhaps JOSM gets into trouble because some of the streams share nodes with such ways which are fetched with the "recurse up" (<) function above, but not all of their nodes. I get the same problem when loading files into JOSM and validating when some of the ways are missing nodes ("nd" elements without corresponding "node" elements).

I noticed this error for the first time after using stable release #18622.

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

Revision:18646
Build-Date:2023-01-30 15:17:59

Identification: JOSM/1.5 (18646 en_GB) Mac OS X 10.13.6
OS Build number: Mac OS X 10.13.6 (17G14042)
Memory Usage: 2864 MB / 4096 MB (957 MB allocated, but free)
Java version: 17.0.6+10-LTS, Azul Systems, Inc., OpenJDK 64-Bit Server VM
Look and Feel: com.apple.laf.AquaLookAndFeel
Screen: Display 69676352 2560×1440 (scaling 1.00×1.00)
Maximum Screen Size: 2560×1440
Best cursor sizes: 16×16→16×16, 32×32→32×32
System property file.encoding: UTF-8
System property sun.jnu.encoding: UTF-8
Locale info: en_GB
Numbers with default locale: 1234567890 -> 1234567890
VM arguments: [-Djpackage.app-version=18646, --add-modules=java.scripting,java.sql,javafx.controls,javafx.media,javafx.swing,javafx.web, --add-exports=java.base/sun.security.action=ALL-UNNAMED, --add-exports=java.desktop/com.apple.eawt=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.plugins.jpeg=ALL-UNNAMED, --add-exports=java.desktop/com.sun.imageio.spi=ALL-UNNAMED, --add-opens=java.base/java.lang=ALL-UNNAMED, --add-opens=java.base/java.nio=ALL-UNNAMED, --add-opens=java.base/jdk.internal.loader=ALL-UNNAMED, --add-opens=java.base/jdk.internal.ref=ALL-UNNAMED, --add-opens=java.desktop/javax.imageio.spi=ALL-UNNAMED, --add-opens=java.desktop/javax.swing.text.html=ALL-UNNAMED, --add-opens=java.prefs/java.util.prefs=ALL-UNNAMED, -Djpackage.app-path=/Applications/JOSM.app/Contents/MacOS/JOSM]
Dataset consistency test: No problems found

Plugins:
+ Mapillary (2.1.1)
+ PicLayer (1.0.2)
+ SeaChart (35840)
+ apache-commons (36034)
+ apache-http (35924)
+ areaselector (1652822522)
+ austriaaddresshelper (master-4e80dc2e4261d321150187f4951684ad97342d5e)
+ conflation (0.6.9)
+ ejml (35924)
+ geotools (36028)
+ imagery-xml-bounds (35976)
+ jackson (36034)
+ jaxb (35952)
+ jna (36005)
+ jts (36004)
+ log4j (36034)
+ opendata (36025)
+ pdfimport (35976)
+ reverter (36043)
+ tageditor (36011)
+ todo (30306)
+ turnlanes (36011)
+ turnlanes-tagging (v0.0.5)
+ turnrestrictions (36011)
+ utilsplugin2 (36011)
+ wikipedia (605)

Tagging presets:
+ https://josm.openstreetmap.de/josmfile?page=Presets/LaneAttributes&zip=1
+ https://raw.githubusercontent.com/OpenNauticalChart/josm/master/INT-1-preset.xml

Map paint styles:
+ https://josm.openstreetmap.de/josmfile?page=Styles/Lane_and_Road_Attributes&zip=1
- https://raw.githubusercontent.com/OpenSeaMap/josm/master/INT1_Seamark.mapcss
- https://josm.openstreetmap.de/josmfile?page=Styles/Enhanced_Lane_and_Road_Attributes&zip=1
- http://osm.wzh.be/josm/different_buildings/different_buildings.mapcss

Last errors/warnings:
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1775]
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1776]
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1777]
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1778]
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1779]
- 13295.777 W: Crossing ways test skipped WaySegment [way=50694770, lowerIndex=1780]
- 13370.627 E: Handled by bug report queue: java.lang.IllegalArgumentException: Parameter 'en2' must not be null
- 13649.257 E: Handled by bug report queue: java.lang.IllegalArgumentException: Parameter 'en1' must not be null
- 14086.427 E: Handled by bug report queue: java.lang.IllegalArgumentException: Parameter 'en1' must not be null
- 14196.294 E: Handled by bug report queue: java.lang.IllegalArgumentException: Parameter 'en1' must not be null



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

Warning issued by: BugReportExceptionHandler#handleException

=== STACK TRACE ===
Thread: AWT-EventQueue-0 (24) of main
java.lang.IllegalArgumentException: Parameter 'en1' must not be null
	at org.openstreetmap.josm.tools.CheckParameterUtil.ensureParameterNotNull(CheckParameterUtil.java:26)
	at org.openstreetmap.josm.data.validation.util.ValUtil.getSegmentCells(ValUtil.java:139)
	at org.openstreetmap.josm.data.validation.util.ValUtil.getSegmentCells(ValUtil.java:123)
	at org.openstreetmap.josm.data.validation.tests.CrossingWays.getSegments(CrossingWays.java:426)
	at org.openstreetmap.josm.data.validation.tests.PowerLines.addWaterWaySegments(PowerLines.java:133)
	at java.base/java.lang.Iterable.forEach(Unknown Source)
	at org.openstreetmap.josm.data.validation.tests.PowerLines.visit(PowerLines.java:142)
	at org.openstreetmap.josm.data.osm.Relation.accept(Relation.java:176)
	at org.openstreetmap.josm.data.validation.Test.visit(Test.java:216)
	at org.openstreetmap.josm.data.validation.ValidationTask.realRun(ValidationTask.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.doRealRun(PleaseWaitRunnable.java:94)
	at org.openstreetmap.josm.gui.PleaseWaitRunnable.run(PleaseWaitRunnable.java:142)
	at java.base/java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
	at java.base/java.util.concurrent.FutureTask.run(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
	at java.base/java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
	at java.base/java.lang.Thread.run(Unknown Source)

[skyper]

Closed as duplicate of #22684.