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gh-144493: Improve error message in _overlapped.BindLocal() (#144495)

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Replace a confusing error message with one that actually explains what the error is in `_overlapped.BindLocal()`.

Fixes: https://github.com/python/cpython/issues/144493
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David Lechner 2026-02-06 02:51:19 -06:00 • committed by GitHub
parent 957f9fe162
commit 56590f820e
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Misc/NEWS.d/next/Library/2026-02-05-17-15-31.gh-issue-144493.XuxwVu.rst Normal file
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@ -0,0 +1 @@
Improve an exception error message in ``_overlapped.BindLocal()`` that is raised when :meth:`asyncio.loop.sock_connect` is called on a :class:`asyncio.ProactorEventLoop` with a socket that has an invalid address family.

2
Modules/overlapped.c
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@ -559,7 +559,7 @@ _overlapped_BindLocal_impl(PyObject *module, HANDLE Socket, int Family)
ret = bind((SOCKET)Socket, (SOCKADDR*)&addr, sizeof(addr))
!= SOCKET_ERROR;
} else {
PyErr_SetString(PyExc_ValueError, "expected tuple of length 2 or 4");
PyErr_SetString(PyExc_ValueError, "Only AF_INET and AF_INET6 families are supported");
return NULL;
}