Quoting the documentation of File::Temp:
For maximum security, endeavour always to avoid ever looking at, touching, or even imputing the existence of the filename. You do not know that that filename is connected to the same file as the handle you have, and attempts to check this can only trigger more race conditions. It's far more secure to use the filehandle alone and dispense with the filename altogether.
Does the handle not work, or is it just the file name?

In reply to Re: invoke tempdir() failed by choroba
in thread invoke tempdir() failed by marscld

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