RFR: 8287843: File::getCanonicalFile doesn't work for \?\C:\ style paths DOS device paths [v3]

[Alan Bateman]

On Wed, 20 Sep 2023 18:47:33 GMT, Brian Burkhalter <bpb at openjdk.org> wrote:

> > File::isAbsolute, it looks like it will return true for input like `\\\?\\foo` but it will be treated by toAbsolutePath as a relative path.
> 
> Right on:

Ideally the prefix would be removed at the front door, meaning when creating the File object, but it may be 20 years too late to do that change. From a compatibility perspective then limiting the it to canonicalization should be okay but it the path needs to make absolute again after stripping.

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PR Comment: https://git.openjdk.org/jdk/pull/15603#issuecomment-1728282600