net: (*TCPAddr).String behaves incorrectly when IP is missing #6465
Description
http://play.golang.org/p/jA_lETPNef addr := &net.TCPAddr{Port: 12345} fmt.Println(addr) should print ":12345" but prints "<nil>:12345". The given addr is what you get from ResolveTCPAddr(":12345"), so it should invert.