for i := 0; i < 5; i++ {
		id := i + 1
		if err := db.QueryRow("SELECT|t|nullf|id=?", id).Scan(bindVal); err != nil {
			t.Errorf("id=%d Scan: %v", id, err)
		}
		bindValDeref := reflect.ValueOf(bindVal).Elem().Interface()
		if !reflect.DeepEqual(bindValDeref, spec.rows[i].scanNullVal) {
			t.Errorf("id=%d got %#v, want %#v", id, bindValDeref, spec.rows[i].scanNullVal)
		}
	}
}

// golang.org/issue/4859

			"foo": func(authority string, c *tls.Conn) RoundTripper { panic("") },
		},
		ReadBufferSize:  1,
		WriteBufferSize: 1,
	}
	tr2 := tr.Clone()
	rv := reflect.ValueOf(tr2).Elem()
	rt := rv.Type()
	for i := 0; i < rt.NumField(); i++ {
		sf := rt.Field(i)
		if !token.IsExported(sf.Name) {
			continue
		}
		if rv.Field(i).IsZero() {