golang issue4470 代码
文件路径：/test/fixedbugs/issue4470.go
/ errorcheck
/ Copyright 2012 The Go Authors. All rights reserved.
/ Use of this source code is governed by a BSD-style
/ license that can be found in the LICENSE file.
/ Issue 4470: parens are not allowed around .(type) "expressions"
package main
func main() {
var i interface{}
switch (i.(type)) { / ERROR "outside type switch"
default:
}
_ = i
}