[LOG4J2-2809] java.lang.NullPointerException at java9 org.apache.logging.log4j.util.StackLocator.calcLocation()

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 2.13.2
• Assignee: Ralph Goers
• Reporter: Andre Elis
• Created: 21/Mar/20 21:17
• Updated: 29/Mar/20 10:45
• Resolved: 28/Mar/20 17:30

Description

When log() is called from a class using an instance created/stored at ThreadLocal
its StackWalker.StackFrame names changes to "WrappingClass$ClassFromThreadLocal".

This causes  NPE because walker.walk(LOCATOR) returns null.

StackTraceElement element = walker.walk(LOCATOR).toStackTraceElement();

It is suggested to check the result of walk() for null-ness and react in the way different from NPE.

Issue Links

• links to: GitHub Pull Request #356