Sebb created IO-447:
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Summary: Possible NPE in FileSystemUtils.freeSpaceWindows;
FilenameUtils.normalize can return null
Key: IO-447
URL: https://issues.apache.org/jira/browse/IO-447
Project: Commons IO
Issue Type: Bug
Reporter: Sebb
There is a possible NPE in FileSystemUtils.freeSpaceWindows.
FilenameUtils.normalize can return null so the path.length() will NPE
For example, ".." returns null.
I'm not entirely sure why the path needs to be normalised, apart from
converting / to \. Even that seems a bit dubious - why should the user want to
return the freespace for a Unix-style path on a Windows system?
And if it does need to be normalised, why not use the File class, which handles
/ to \ conversion transparently?
A short term fix would be to return IAE for paths that normalise to null.
However that would not allow the use of paths such as ".." - though at least
that would not cause NPE.
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