LIU WEN created LOG4J2-2389:
-------------------------------

             Summary: fix the CacheEntry map in 
ThrowableProxy#toExtendedStackTrace to be put and gotten with same key
                 Key: LOG4J2-2389
                 URL: https://issues.apache.org/jira/browse/LOG4J2-2389
             Project: Log4j 2
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.11.0, 2.10.0, 2.9.1, 2.9.0, 2.8.2, 2.8.1, 2.8, 2.7, 
2.6.2
            Reporter: LIU WEN


* stackTraceElement.toString() returns a string representation of this stack 
trace element, just as MyClass.mash(MyClass.java)
 * stackTraceElement.getClassName() returns the fully qualified name of the 
Class
{code:java}
final String className = stackTraceElement.getClassName();
final CacheEntry cacheEntry = map.get(className);
if (cacheEntry != null) {
      final CacheEntry entry = cacheEntry;
      extClassInfo = entry.element;
      if (entry.loader != null) {
             lastLoader = entry.loader;
      }
} else {
      final CacheEntry entry = this.toCacheEntry(stackTraceElement,
      this.loadClass(lastLoader, className), false);
      extClassInfo = entry.element;
      map.put(stackTraceElement.toString(), entry);
      if (entry.loader != null) {
             lastLoader = entry.loader;
      }
}
{code}



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