golang main 代码
文件路径：/test/fixedbugs/issue15071.dir/main.go
// run
// Copyright 2016 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.
package main
import "os"
import "./exp"
func main() {
_ = exp.Exported(len(os.Args))
}