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https://issues.apache.org/jira/browse/LOG4J2-2058?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16990716#comment-16990716
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Ralph Goers commented on LOG4J2-2058:
-------------------------------------
I have created a test but no matter what I do I cannot duplicate this behavior.
I am pretty sure I know how to fix this issue but until I can figure out how to
create a test that fails I have no way to validate it.
> java.locale.providers set to HOST causes Log4j2 to crash in Java 9
> ------------------------------------------------------------------
>
> Key: LOG4J2-2058
> URL: https://issues.apache.org/jira/browse/LOG4J2-2058
> Project: Log4j 2
> Issue Type: Bug
> Components: JUL adapter, Pattern Converters
> Affects Versions: 2.9.0, 2.9.1
> Environment: Windows 10, Java 9
> Reporter: Dean Wookey
> Priority: Blocker
>
> When using the JUL log manager, setting the java.locale.providers property to
> "HOST" causes log4j2 to crash when you next log something.
> {code:java}
> import java.util.logging.Level;
> import java.util.logging.Logger;
> public class LocalePropertyTest {
> /**
> * @param args the command line arguments
> */
> public static void main(String[] args) {
> System.setProperty("java.locale.providers", "HOST,JRE,SPI");
> System.setProperty("java.util.logging.manager",
> "org.apache.logging.log4j.jul.LogManager");
>
> Logger.getLogger(LocalePropertyTest.class.getName()).log(Level.WARNING, "this
> is a test");
> }
> }
> {code}
> Used the following libraries:
> log4j-jul-2.9.1.jar
> log4j-core-2.9.1.jar
> log4j-api-2.9.1.jar
> The error is very long. Here are the first few lines:
> ERROR StatusLogger Error creating converter for d
> java.lang.reflect.InvocationTargetException
> at jdk.internal.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
> at
> java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
> at java.base/java.lang.reflect.Method.invoke(Method.java:564)
> at
> org.apache.logging.log4j.core.pattern.PatternParser.createConverter(PatternParser.java:582)
> at
> org.apache.logging.log4j.core.pattern.PatternParser.finalizeConverter(PatternParser.java:638)
> at
> org.apache.logging.log4j.core.pattern.PatternParser.parse(PatternParser.java:414)
> at
> org.apache.logging.log4j.core.pattern.PatternParser.parse(PatternParser.java:177)
> at
> org.apache.logging.log4j.core.layout.PatternLayout$SerializerBuilder.build(PatternLayout.java:376)
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