Fix crash in PyIShellIconOverlayIdentifier::IsMemberOf with Python 3.12#2466
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Mscht wants to merge 2 commits intomhammond:mainfrom
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Fix crash in PyIShellIconOverlayIdentifier::IsMemberOf with Python 3.12#2466Mscht wants to merge 2 commits intomhammond:mainfrom
Mscht wants to merge 2 commits intomhammond:mainfrom
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That's exactly the same pattern that caused issue #2415 which was fixed with PR #2417. It looks like Python < 3.12 was more forgiving. It might have to do with the code changes in 3.12 to prepare for getting rid of the GIL. However, if you found other places with this pattern, it would be great if you could fix them in another PR. |
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No changes after fixing conflicts (a single newline difference). This was included in https://github.com/mhammond/pywin32/pull/2467/files#diff-a19942c574a1cd9e2d9cf76408893d870a9c871d44d4a65b2bdf5ffdd0a43ec5 |
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Hello,
we are currently migrating our application from Python 3.11 to 3.12 and encountered a crash (access violation) determining overlay images of files via the
IShellIconOverlayIdentifier.We found out that the crash can be fixed by simply moving the
PyObject_FreeWChar()method after the PY_INTERFACE_POSTCALL, so GIL is aquired.So from my understand, it is not allowed to do any memory deallocation on PyObjects without having the GIL. I found this "bad" pattern in some more places. I will create a second pull request with those changes, as I only tested the change of this pull request.