golang plugin 代码
文件路径：/misc/cgo/testplugin/testdata/issue24351/plugin.go
// Copyright 2018 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 "fmt"
func B(c chan bool) {
go func() {
fmt.Println(1.5)
c <- true
}()
}