New submission from Eryk Sun:
win_readlink in Modules/posixmodule.c mistakenly treats the PrintNameOffset
field of the reparse data buffer as a number of characters instead of bytes.
Thus, if the offset is non-zero, the value returned is incorrect stack garbage.
For example, the following should return "C:\\ProgramData":
>>> os.readlink(r'C:\Users\All Users')
'\u6c20\u3012\u041f\x01\u2768\u60b2\u031b\x02\x05\x00\u031e\x06\u8c01\u4012'
Craig Holmquist found this bug, as detailed in message 277385. He included a
fix in the patch for issue 23407, but this should be addressed in the next
maintenance release of 3.5 and 3.6.
----------
components: Library (Lib), Windows
messages: 285294
nosy: eryksun, paul.moore, steve.dower, tim.golden, zach.ware
priority: normal
severity: normal
stage: needs patch
status: open
title: os.readlink fails on Windows
type: behavior
versions: Python 3.5, Python 3.6, Python 3.7
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<http://bugs.python.org/issue29248>
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