Gary D. Gregory created FELIX-6259:
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             Summary: java.util.ConcurrentModificationException building Apache 
Commons CSV on Java 15-EA
                 Key: FELIX-6259
                 URL: https://issues.apache.org/jira/browse/FELIX-6259
             Project: Felix
          Issue Type: Bug
            Reporter: Gary D. Gregory


We get a java.util.ConcurrentModificationException building Apache Commons CSV 
when building with Java 15-EA:
{noformat}
openjdk version "15-ea" 2020-09-15
OpenJDK Runtime Environment (build 15-ea+18-776)
OpenJDK 64-Bit Server VM (build 15-ea+18-776, mixed mode, sharing)
{noformat}
ConcurrentModificationException:
{noformat}
[INFO] --- maven-bundle-plugin:4.2.1:manifest (bundle-manifest) @ commons-csv 
---
[ERROR] An internal error occurred
java.util.ConcurrentModificationException
    at java.util.TreeMap.callMappingFunctionWithCheck (TreeMap.java:742)
    at java.util.TreeMap.computeIfAbsent (TreeMap.java:558)
    at aQute.bnd.osgi.Jar.putResource (Jar.java:288)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:202)
    at aQute.bnd.osgi.Jar$1.visitFile (Jar.java:177)
    at java.nio.file.Files.walkFileTree (Files.java:2804)
    at aQute.bnd.osgi.Jar.buildFromDirectory (Jar.java:176)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:119)
    at aQute.bnd.osgi.Jar.<init> (Jar.java:172)
    at org.apache.felix.bundleplugin.BundlePlugin.getOSGiBuilder 
(BundlePlugin.java:604)
    at org.apache.felix.bundleplugin.ManifestPlugin.getAnalyzer 
(ManifestPlugin.java:285)
    at org.apache.felix.bundleplugin.ManifestPlugin.execute 
(ManifestPlugin.java:111)
    at org.apache.felix.bundleplugin.BundlePlugin.execute 
(BundlePlugin.java:364)
    at org.apache.maven.plugin.DefaultBuildPluginManager.executeMojo 
(DefaultBuildPluginManager.java:137)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:210)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:156)
    at org.apache.maven.lifecycle.internal.MojoExecutor.execute 
(MojoExecutor.java:148)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:117)
    at org.apache.maven.lifecycle.internal.LifecycleModuleBuilder.buildProject 
(LifecycleModuleBuilder.java:81)
    at 
org.apache.maven.lifecycle.internal.builder.singlethreaded.SingleThreadedBuilder.build
 (SingleThreadedBuilder.java:56)
    at org.apache.maven.lifecycle.internal.LifecycleStarter.execute 
(LifecycleStarter.java:128)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:305)
    at org.apache.maven.DefaultMaven.doExecute (DefaultMaven.java:192)
    at org.apache.maven.DefaultMaven.execute (DefaultMaven.java:105)
    at org.apache.maven.cli.MavenCli.execute (MavenCli.java:957)
    at org.apache.maven.cli.MavenCli.doMain (MavenCli.java:289)
    at org.apache.maven.cli.MavenCli.main (MavenCli.java:193)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke0 (Native Method)
    at jdk.internal.reflect.NativeMethodAccessorImpl.invoke 
(NativeMethodAccessorImpl.java:62)
    at jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke 
(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke (Method.java:564)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced 
(Launcher.java:282)
    at org.codehaus.plexus.classworlds.launcher.Launcher.launch 
(Launcher.java:225)
    at org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode 
(Launcher.java:406)
    at org.codehaus.plexus.classworlds.launcher.Launcher.main 
(Launcher.java:347)
{noformat}
Full log: [https://pastebin.com/c3H3Zi7X]



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