ADDITIONAL SYSTEM INFORMATION :
OS: Microsoft Windows 10 Pro
Version: 10.0.19044 Build 19044
Processor: Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz, 2901 MHz, 2 Cores, 4 logical processors

$ java -version
openjdk version "19" 2022-09-20
OpenJDK Runtime Environment (build 19+36-2238)
OpenJDK 64-Bit Server VM (build 19+36-2238, mixed mode, sharing)

A DESCRIPTION OF THE PROBLEM :
When I run javadoc on my (unfortunately confidential) project I get the following error:

[ERROR] error: An internal exception has occurred.
[ERROR] (java.util.ConcurrentModificationException)
[ERROR] Please file a bug against the javadoc tool via the Java bug reporting page
[ERROR] (http://bugreport.java.com) after checking the Bug Database (http://bugs.java.com)
[ERROR] for duplicates. Include error messages and the following diagnostic in your report. Thank you.
[ERROR] java.util.ConcurrentModificationException
[ERROR] at java.base/java.util.HashMap.computeIfAbsent(HashMap.java:1229)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getTreePath(Utils.java:2299)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getDocCommentInfo0(Utils.java:2382)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getDocCommentInfo(Utils.java:2360)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getDocCommentTree0(Utils.java:2328)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getDocCommentTree(Utils.java:2415)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.util.Utils.getFirstSentenceTrees(Utils.java:2492)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDocletWriter.addSummaryComment(HtmlDocletWriter.java:1331)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.addPackageUse(ClassUseWriter.java:316)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.addPackageList(ClassUseWriter.java:250)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.addClassUse(ClassUseWriter.java:228)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.generateClassUseFile(ClassUseWriter.java:208)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.generate(ClassUseWriter.java:196)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.ClassUseWriter.generate(ClassUseWriter.java:160)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.formats.html.HtmlDoclet.generateOtherFiles(HtmlDoclet.java:231)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.startGeneration(AbstractDoclet.java:213)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.doclets.toolkit.AbstractDoclet.run(AbstractDoclet.java:110)
[ERROR] at jdk.javadoc/jdk.javadoc.doclet.StandardDoclet.run(StandardDoclet.java:103)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.tool.Start.parseAndExecute(Start.java:574)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:397)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.tool.Start.begin(Start.java:346)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.tool.Main.execute(Main.java:57)
[ERROR] at jdk.javadoc/jdk.javadoc.internal.tool.Main.main(Main.java:46)
[ERROR] 1 error
[ERROR] 43 warnings
[ERROR]
[ERROR] Command line was: cmd.exe /X /C ""C:\Program Files\Java\jdk-19\bin\javadoc.exe" @options @packages @argfile"

I don't get an hs_err file. Note that I used --enable-preview as well as -add-modules=jdk.incubator.vector and --add-modules=jdk.incubator.concurrent , but I am not sure if it has anything to do with the error (I doubt it). It happens when creating the "class-use".


FREQUENCY : always