Invalid layout assumptions for std::net::SocketAddrV{4, 6}

[a1phyr]

seaslug/src/io/io_uring/uring.rs

Lines 610 to 621 in 63d16b8

	fn addr2raw(addr: &std::net::SocketAddr) -> (*const libc::sockaddr, libc::socklen_t) {
	match *addr {
	std::net::SocketAddr::V4(ref a) => {
	let b: *const std::net::SocketAddrV4 = a;
	(b as *const _, std::mem::size_of_val(a) as libc::socklen_t)
	}
	std::net::SocketAddr::V6(ref a) => {
	let b: *const std::net::SocketAddrV6 = a;
	(b as *const _, std::mem::size_of_val(a) as libc::socklen_t)
	}
	}
	}

This code assumes that the layout of std::net::SocketAddrV{4,6} matches libc::sockaddr, but std makes no such promise. See rust-lang/rust#78802 for more details.

Example fixes: tokio-rs/mio#1388, rust-lang/socket2#120.