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291ec6e45e
On AIX 7.1, struct sockaddr_un is declared to be 1025 bytes long, but the sun_len field that should hold the length is only a byte. Clamp the value we try to store to ensure it will fit in the field. (This coding might need adjustment if there are any machines out there where sun_len is as wide as size_t; but a preliminary survey suggests there's not, so let's keep it simple.) Discussion: https://postgr.es/m/2781112.1644819528@sss.pgh.pa.us