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https://issues.apache.org/jira/browse/LOG4J2-3131?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Adam Long updated LOG4J2-3131:
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Comment: was deleted
(was: {noformat}
java.lang.NullPointerException at
org.apache.logging.log4j.core.impl.ThrowableProxyRenderer.formatElements(ThrowableProxyRenderer.java:91)
at
org.apache.logging.log4j.core.impl.ThrowableProxyRenderer.formatThrowableProxy(ThrowableProxyRenderer.java:71)
at
org.apache.logging.log4j.core.impl.ThrowableProxyRenderer.formatCause(ThrowableProxyRenderer.java:57)
at
org.apache.logging.log4j.core.impl.ThrowableProxyRenderer.formatExtendedStackTraceTo(ThrowableProxyRenderer.java:182)
at
org.apache.logging.log4j.core.impl.ThrowableProxy.formatExtendedStackTraceTo(ThrowableProxy.java:374)
at
org.apache.logging.log4j.core.impl.ThrowableProxy.getExtendedStackTraceAsString(ThrowableProxy.java:360)
at
org.apache.logging.log4j.core.impl.ThrowableProxy.getExtendedStackTraceAsString(ThrowableProxy.java:313)
at example.StringAppender.append(StringAppender.java:42) at
org.apache.logging.log4j.core.config.AppenderControl.tryCallAppender(AppenderControl.java:156)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppender0(AppenderControl.java:129)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppenderPreventRecursion(AppenderControl.java:120)
at
org.apache.logging.log4j.core.config.AppenderControl.callAppender(AppenderControl.java:84)
at
org.apache.logging.log4j.core.config.LoggerConfig.callAppenders(LoggerConfig.java:540)
at
org.apache.logging.log4j.core.config.LoggerConfig.processLogEvent(LoggerConfig.java:498)
at
org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:481) at
org.apache.logging.log4j.core.config.LoggerConfig.log(LoggerConfig.java:456) at
org.apache.logging.log4j.core.config.AwaitCompletionReliabilityStrategy.log(AwaitCompletionReliabilityStrategy.java:82)
at org.apache.logging.log4j.core.Logger.log(Logger.java:161) at
org.apache.logging.log4j.spi.AbstractLogger.tryLogMessage(AbstractLogger.java:2205)
at
org.apache.logging.log4j.spi.AbstractLogger.logMessageTrackRecursion(AbstractLogger.java:2159)
at
org.apache.logging.log4j.spi.AbstractLogger.logMessageSafely(AbstractLogger.java:2142)
at
org.apache.logging.log4j.spi.AbstractLogger.logMessage(AbstractLogger.java:2017)
at
org.apache.logging.log4j.spi.AbstractLogger.logIfEnabled(AbstractLogger.java:1983)
at org.apache.logging.log4j.spi.AbstractLogger.error(AbstractLogger.java:750)
at example.Main.main(Main.java:8){noformat})
> Attempting to call getExtendedStackTraceAsString() after deserializing JSON
> LogEvent results in a NPE
> -----------------------------------------------------------------------------------------------------
>
> Key: LOG4J2-3131
> URL: https://issues.apache.org/jira/browse/LOG4J2-3131
> Project: Log4j 2
> Issue Type: Bug
> Components: Layouts
> Affects Versions: 2.14.1
> Reporter: Adam Long
> Priority: Major
> Attachments: example.zip
>
>
> How to reproduce:
> # Generate a LogEvent with an Exception that has at least one cause (i.e.
> nested Exception)
> # Use the standard JSON Layout to turn that LogEvent into JSON
> # Using JsonLogEventParser to turn it back into a LogEvent
> # Call getExtendedStackTraceAsString() on the ThrowableProxy associated with
> the deserialized LogEvent
> # A NullPointerException will be thrown
> I've attached a small example project to reproduce the error.
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