Undefined symbol in C++ extension when using Python 3.11 and PyTorch-based C++/CUDA module (`selective_scan_cuda`)

[atulegenova]

Bug report

Bug description:

Describe the bug
While importing a compiled PyTorch CUDA extension (selective_scan_cuda.cpython-311-x86_64-linux-gnu.so from the mamba-ssm library), Python 3.11 raises an ImportError with an unresolved C++ symbol.

This happens only under Python 3.11, while the same library works with Python 3.10.

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Error message
ImportError: /usr/local/lib/python3.11/dist-packages/selective_scan_cuda.cpython-311-x86_64-linux-gnu.so:
undefined symbol: _ZN3c107WarningC1ESt7variantIJNS0_11UserWarningENS0_18DeprecationWarningEEERKNS_14SourceLocationENSt7__cxx1112basic_stringIcSt11char_traitsIcESaIcEEEb

---

Expected behavior
The .so file should load if built correctly against Python 3.11-compatible headers and libraries. At the very least, the Python interpreter should offer better diagnostics if a symbol version mismatch occurs due to Python or ABI changes.

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To Reproduce

# In Python 3.11 environment with torch and mamba-ssm installed
from mamba_ssm import Mamba  # raises ImportError


### CPython versions tested on:

3.11

### Operating systems tested on:

Linux

[StanFromIreland]

I do not think this is a bug in CPython, this is probably something to do with how the extension was compiled, and a DeprecationWarning is being raised. 3.11 also no longer accepts bugfixes.

I was able to find this issue, state-spaces/mamba#169 in the extensions reporsitory, which appears to be the same thing. I also found this article about what appears to be the same issue on another site.

[ZeroIntensity]

Yeah, this is definitely not a CPython issue.