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https://issues.apache.org/jira/browse/LOG4J2-3231?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17459587#comment-17459587
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Gary D. Gregory edited comment on LOG4J2-3231 at 12/15/21, 1:17 AM:
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Hello [~phongn]
Thank you for your report. May you please provide a simple unit test to
reproduce this issue?
Also, please post the NPE.
This simple test passes:
{code:java}
package org.apache.logging.log4j.core.net;
import org.junit.jupiter.api.Test;
public class JndiManagerTest {
@Test
public void testIsJndiEnabled() {
assertFalse(JndiManager.isJndiEnabled());
}
} {code}
was (Author: garydgregory):
Hello [~phongn]
Thank you for your report. May you please provide a simple unit test to
reproduce this issue?
This simple test passes:
{code:java}
package org.apache.logging.log4j.core.net;
import org.junit.jupiter.api.Test;
public class JndiManagerTest {
@Test
public void testIsJndiEnabled() {
assertFalse(JndiManager.isJndiEnabled());
}
} {code}
> JndiManager.isJndiEnabled generates a call to NetUtils.getLocalIps
> ------------------------------------------------------------------
>
> Key: LOG4J2-3231
> URL: https://issues.apache.org/jira/browse/LOG4J2-3231
> Project: Log4j 2
> Issue Type: Bug
> Components: Core
> Affects Versions: 2.16.0
> Reporter: Phong X. Nguyen
> Priority: Major
>
> While trying to upgrade from 2.15.0 to 2.16.0, we discovered some of our unit
> tests were failing. On further investigation, we realized that the new
> {{JndiManager.isJndiEnabled()}} method, on first call, causes initialization
> of all static members of {{{}JndiManager{}}}, including a call to
> {{{}NetUtils.getLocalIps{}}}. In at least one of our unit test frameworks,
> this generates a NullPointerException.
> Could some of the {{permanentAllowed}} lists initialization be deferred to
> avoid this issue?
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