[issue27533] release GIL in nt._isdir

[Jeremy Spiegel]

New submission from Jeremy Spiegel:

In Modules/posixmodule.c, the function os__isdir_impl calls GetFileAttributesA/GetFileAttributesW without releasing the GIL. This is problematic since it can result in disk or network I/O, depending on the filesystem.

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components: Library (Lib)
files: _isdir.patch
keywords: patch
messages: 270583
nosy: jeremyspiegel
priority: normal
severity: normal
status: open
title: release GIL in nt._isdir
Added file: http://bugs.python.org/file43755/_isdir.patch

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<http://bugs.python.org/issue27533>
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