[issue9647] os.confstr() does not handle value changing length between calls

[Roundup Robot]

Roundup Robot added the comment:

New changeset a7a8947e9ce4 by Victor Stinner in branch 'default':
Issue #9647: os.confstr() ensures that the second call to confstr() returns the
https://hg.python.org/cpython/rev/a7a8947e9ce4

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nosy: +python-dev

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<http://bugs.python.org/issue9647>
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