Message 169990 - Python tracker

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In-reply-to
Author	kaba2
Recipients	kaba2
Date	2012年09月07日.16:40:14
SpamBayes Score	-1.0
Marked as misclassified	Yes
Message-id	<1347036015.89.0.836232949292.issue15880@psf.upfronthosting.co.za>

Content
On Windows, long-UNC paths are needed to inspect and modify paths with more than 260 characters. The os.path.split() function behaves incorrectly in the presence of a long-UNC prefix //?/ or \\?\. Consider iterating d = os.path.split(d)[0] with d = '//?/e:/python-test/dir'. Then the values of d are as follows: '//?/e:/python-test/dir' '//?/e:/python-test' '//?/e:' '//?' '//' The two last splits are the incorrect ones, where the splitting should end at '//?/e:'. One consequence of this is that os.makedirs(d) crashes, because it attempts to run os.mkdir('//') at the bottom of its recursion. The same thing happens when replacing all / with \\ in the above.

Content

On Windows, long-UNC paths are needed to inspect and modify paths with more than 260 characters. The os.path.split() function behaves incorrectly in the presence of a long-UNC prefix //?/ or \\?\. Consider iterating d = os.path.split(d)[0] with d = '//?/e:/python-test/dir'. Then the values of d are as follows:
'//?/e:/python-test/dir'
'//?/e:/python-test'
'//?/e:'
'//?'
'//'
The two last splits are the incorrect ones, where the splitting should end at '//?/e:'.
One consequence of this is that os.makedirs(d) crashes, because it attempts to run os.mkdir('//') at the bottom of its recursion. The same thing happens when replacing all / with \\ in the above.

History
Date	User	Action	Args
2012年09月07日 16:40:15	kaba2	set	recipients: + kaba2
2012年09月07日 16:40:15	kaba2	set	messageid: <1347036015.89.0.836232949292.issue15880@psf.upfronthosting.co.za>
2012年09月07日 16:40:15	kaba2	link	issue15880 messages
2012年09月07日 16:40:14	kaba2	create

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