[jira] [Created] (LOG4J2-1687) NPE in ThrowableProxy when resolving stack

["Robert Christiansen (JIRA)" <ji...@apache.org>]

Robert Christiansen created LOG4J2-1687:
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             Summary: NPE in ThrowableProxy when resolving stack
                 Key: LOG4J2-1687
                 URL: https://issues.apache.org/jira/browse/LOG4J2-1687
             Project: Log4j 2
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.7
         Environment: - java version "1.7.0_80" ,Java(TM) SE Runtime Environment (build 1.7.0_80-b15), Java HotSpot(TM) 64-Bit Server VM (build 24.80-b11, mixed mode)
- Jboss EAP 5.2.0-EAP
            Reporter: Robert Christiansen


NPE when logging in Java EE/OSGi environment. 

In some cases the ClassLoader ( https://docs.oracle.com/javase/7/docs/api/java/lang/Class.html#getClassLoader() ) will be null for a Class.

With the changes introduced in 
https://issues.apache.org/jira/browse/LOG4J2-1457 logging with %xEx can cause a NullPointerExeception when trying to resolve the stack.

Since it's not a common occurrence in most environments I suggest the ThrowableProxy swallow the NPE in the same way it swallows SecurityExeception and other classloading exceptions to avoid extra branching for all environments.





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