Brenda Bell created LOG4NET-361:
-----------------------------------

             Summary: RollingLogFileAppender does not correctly initialize the 
backup index when style is date or composite
                 Key: LOG4NET-361
                 URL: https://issues.apache.org/jira/browse/LOG4NET-361
             Project: Log4net
          Issue Type: Bug
          Components: Appenders
    Affects Versions: 1.2.11
            Reporter: Brenda Bell


If there are no log files when a process starts, everything is fine. A new log 
is created and the files are properly rolled to .1, .2, .3, etc. A new log is 
also created the next day with correct indexes.

However, if log files exist for any day when the process starts, 
RollingLogFileAppender incorrectly initializes the starting backup index to the 
maximum index for all days instead of using the maximum index for the current 
day. In other words, it completely ignores the date pattern when determining 
whether to consider a particular file in the backup index algorithm.

It looks like the error stems from the following code being commented out on 
lines 893-901:

                        if (m_staticLogFileName) 
                        {
                                int endLength = curFileName.Length - index;
                                if (baseFile.Length + endLength != 
curFileName.Length) 
                                {
                                        // file is probably scheduledFilename + 
.x so I don't care
                                        return;
                                }
                        }

This code is not commented out in 1.2.10 and we do not see the issue after 
downgrading to the earlier release.



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