New submission from STINNER Victor:

Memory leak spotted by the issue #28195: path_converter() calls 
PyUnicode_AsWideCharString() which allocates a new buffer at each call, but 
this buffer is never released.

On Python 3.5, PyUnicode_AsWideCharString() was used which handles internally 
the memory buffer and so release the memory later.

Attached patch fixes the regression introduced in Python 3.6 beta 1 by the 
change e20c7d8a8187 ("Issue #27781: Change file system encoding on Windows to 
UTF-8 (PEP 529)").

files: path_converter.patch
keywords: patch
messages: 276924
nosy: haypo, steve.dower
priority: normal
severity: normal
status: open
title: Windows: path_converter() leaks memory for Unicode filenames
versions: Python 3.6, Python 3.7
Added file:

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