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ASF subversion and git services commented on LOG4J2-3471: --------------------------------------------------------- Commit cfb118e40484faa549a975d912473b4f739a8206 in logging-log4j2's branch refs/heads/release-2.x from Gary Gregory [ https://gitbox.apache.org/repos/asf?p=logging-log4j2.git;h=cfb118e404 ] [LOG4J2-3471] log4j-1.2-api-2.17.2 throws exception while removing appender with name as null. Make internal use of the ConcurrentHashMap null safe. > log4j-1.2-api 2.17.2 throws NullPointerException while removing appender with > name as null > ------------------------------------------------------------------------------------------ > > Key: LOG4J2-3471 > URL: https://issues.apache.org/jira/browse/LOG4J2-3471 > Project: Log4j 2 > Issue Type: Bug > Affects Versions: 2.17.2 > Reporter: Rajesh > Assignee: Gary D. Gregory > Priority: Major > > The log4j 1.2 bridge for 2.17.2 throws null pointer exception while removing > Null appender > viz. org.apache.log4j.varia.NullAppender > The class AppenderAttachableImpl adds the null appender to the > concurrenthashmap as "null" and on removal there is no check for null and > removes the nullappender with name null hence the NullPointerexception. > Caused by: java.lang.NullPointerException > at java.util.concurrent.ConcurrentHashMap.remove(Unknown Source) > at > org.apache.log4j.helpers.AppenderAttachableImpl.removeAppender(AppenderAttachableImpl.java:93) > at org.apache.log4j.Category.removeAppender(Category.java:618) -- This message was sent by Atlassian Jira (v8.20.1#820001)