_, _, err = conn.ReadFromUDP(buf)
		if err != nil {
			t.Fatal(err)
		}
	})
	if got := int(allocs); got != 1 {
		t.Errorf("WriteTo/ReadFromUDP allocated %d objects", got)
	}
}

func BenchmarkReadWriteMsgUDPAddrPort(b *testing.B) {
	conn, err := ListenUDP("udp4", &UDPAddr{IP: IPv4(127, 0, 0, 1)})
	if err != nil {
		b.Fatal(err)
	}
	defer conn.Close()
	addr := conn.LocalAddr().(*UDPAddr).AddrPort()