if asan.Enabled && n > 0 {
		asan.Read(unsafe.Pointer(&p[0]), uintptr(n))
	}
	return
}

// For testing: clients can set this flag to force
// creation of IPv6 sockets to return [EAFNOSUPPORT].
var SocketDisableIPv6 bool

type Sockaddr interface {
	sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs
}

type SockaddrInet4 struct {
	Port int
	Addr [4]byte

	if raceenabled && n > 0 {
		raceReadRange(unsafe.Pointer(&p[0]), n)
	}
	return
}

// For testing: clients can set this flag to force
// creation of IPv6 sockets to return EAFNOSUPPORT.
var SocketDisableIPv6 bool

// Sockaddr represents a socket address.
type Sockaddr interface {
	sockaddr() (ptr unsafe.Pointer, len _Socklen, err error) // lowercase; only we can define Sockaddrs
}