[issue30205] socket.getsockname() type mismatch with AF_UNIX on Linux

[STINNER Victor]

STINNER Victor added the comment:

> I didn't know getsockname() could return None...

Me neither. Maybe it's a bug? makesockaddr() returns None if addrlen equals 0:                                   
             
    if (addrlen == 0) {                                                           
        /* No address -- may be recvfrom() from known socket */                   
        Py_RETURN_NONE;                                                           
    }

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<http://bugs.python.org/issue30205>
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