[issue29034] Fix memory leak in path_converter

[Xiang Zhang]

Xiang Zhang added the comment:

Hmm, while considering Victor's comment, I find some new:

path->object refers to the original object o, it owns a borrowed reference. But when received a PathLike object, o is assigned the return value of __fspath__ and decrefed at end. So path->object could refer to a already freed object.

And the PyUnicode_AsWideCharString can't be simply replaced with PyUnicode_AsUnicodeAndSize since wo is decrefed and object->wide could then refer to freed memory.

The logic is complex and I get headache reading the code. Did I miss something?

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Python tracker <report at bugs.python.org>
<http://bugs.python.org/issue29034>
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