Fix different linkage error with cp313-win

[cdce8p]

Seems there was one another regression. Our the cp313-win wheel build started to fail after the pythoncapi_compat.h update was merged. We don't test every platform version combination in CI, that's why I missed it initially.

  C:/hostedtoolcache/windows/Python/3.13.1/x64/include/internal/pycore_pystate.h(271): error C2375: '_Py_GetConfig': redefinition; different linkage (diff)
  D:/a/mypy/mypy/mypyc/lib-rt/pythoncapi_compat.h(2112): note: see declaration of '_Py_GetConfig' (diff)

Seems like a similar issue to #115 where MSVC requires that the signatures match the upstream ones exactly.

Also updated _Py_fopen_obj even though that didn't fail for us. Probably just because we don't use Py_fopen yet.

[cdce8p]

/CC @vstinner

[vstinner]

This issue should be fixed by the change c84545f : can you please try the fix in mypy CI?

[cdce8p]

This issue should be fixed by the change c84545f : can you please try the fix in mypy CI?

Thanks! My test setup looks fine. Opened python/mypy#18560 for mypy.
The full CI run is only triggered after merge, but I expect it to be good as well.

[vstinner]

Oh! I misread this pull request. I saw it as an issue and I wrote exactly the same fix :-D Sorry, I could merge your PR directly.

[cdce8p]

can you please try the fix in mypy CI?

It's fixed now. https://github.com/mypyc/mypy_mypyc-wheels/actions/runs/13014956712/job/36301735749

[vstinner]

Thabks again for your bug report and your fix @cdce8p!