tmct opened a new issue, #223:
URL: https://github.com/apache/logging-log4net/issues/223
Hi,
A more serious problem than the one I reported yesterday: we cannot upgrade
from 2.0.15 to 2.0.17 because our key FileAppender is completely failing to
write anything to the main log file.
```
log4net: Opening file for writing
[/my/code/is/here/bin/Debug/net8.0/log_20250130-185019-0634.txt] append [False]
log4net:ERROR [FileAppender] ErrorCode: FileOpenFailure.
OpenFile(/my/code/is/here/bin/Debug/net8.0/log_20250130-185019-0634.txt,False)
call failed.
System.NullReferenceException: Object reference not set to an instance of an
object.
at log4net.Appender.FileAppender.OpenFile(String fileName, Boolean append)
at log4net.Appender.FileAppender.SafeOpenFile(String fileName, Boolean
append)
log4net: Opening file for writing
[/my/code/is/here/bin/Debug/net8.0/log_20250130-185019-0634.txt] append [False]
```
This appears to be another case of the problem witnessed in #118 that
precipitated the release of 2.0.17 - m_lockingModel is now set lazily, and may
be null when accessed. ActivateOptions is immune to this: it creates the
locking model if it does not exist, so I was wondering if FileAppender.OpenFile
should copy that behaviour - or possible we could encapsulate the lazy setting
into the LockingModel property? I'm not sure why ActivateOptions seemingly
hasn't been called before this - is that indicative of a bug or race condition
elsewhere?
Would you mind if we fixed 2.x please?
Thanks,
Tom
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