Python.exe crashes if __pycache__ directories exist (garbage collection trashed) #481
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URL: https://github.com/pythonnet/pythonnet/issues/481
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Environment
Details
I am trying to import .NET assemblies and use them together. Unfortunately, python interpreter always crashes if .py files are already precompiled and lay inside pycache directories. I tried breifly python 3.6 and newer pythonnet, but it still crashes. However it doesn't crash with old python 2.7.13 64-bit (need to recompile pythonnet for 2.7).
I used Debugger and see that python garbage collection is trashed. Mostly object->tp_is_gc field is invalid not showing to real function.
Deleteing pycache directories allow test.py to run once.
Please, help in identify the issue and in making the fix.
pythonGCCrash.zip
The crash happens mostly inside visit_decref() function in PyObject_IS_GC(op) macro. It shows either "op" is 0 or "op->tp_is_gc" has a wrong address.