golang main 代码
文件路径：/test/closure5.dir/main.go
/ Copyright 2021 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.
/ Check correctness of various closure corner cases
/ that are expected to be inlined
package main
import "./a"
func main() {
if !a.G()()() {
panic("FAIL")
}
}