[lldb-dev] n00b error running lldb tests on windows?

[Joseph Tremoulet via lldb-dev]

Hi,

I'm trying to run the lldb tests on Windows (fresh installs of VS2019 16.7.5, Python 3.8.5, and Swig 4.0.2).  The API tests crash immediately in python initialization code:

Windows fatal exception: access violation

Current thread 0x0000693c (most recent call first):
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 1101 in create_module
  File "<frozen importlib._bootstrap>", line 556 in module_from_spec
  File "<frozen importlib._bootstrap>", line 657 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap>", line 1042 in _handle_fromlist
  File "D:\Obj\lldb\Debug\Lib\site-packages\lldb\__init__.py", line 41 in <module>
  File "<frozen importlib._bootstrap>", line 219 in _call_with_frames_removed
  File "<frozen importlib._bootstrap_external>", line 783 in exec_module
  File "<frozen importlib._bootstrap>", line 671 in _load_unlocked
  File "<frozen importlib._bootstrap>", line 975 in _find_and_load_unlocked
  File "<frozen importlib._bootstrap>", line 991 in _find_and_load
  File "D:\Source\llvm-project\lldb\packages\Python\lldbsuite\test\dotest.py", line 898 in run_suite
  File "D:/Source/llvm-project/lldb\test\API\dotest.py", line 7 in <module>

Running in the debugger, I see "_PyRuntime.gc.generation0 was nullptr".

I presume I have something set up incorrectly in my environment, but I haven't had much luck figuring out what.  Is this by any chance an error/stack that somebody recognizes as a common/known issue?

Thanks,
-Joseph

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