golang a 代码
文件路径：/test/fixedbugs/issue14331.dir/a.go
/ 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 a
var S struct {
Str string `tag`
}
func F() string {
v := S
return v.Str
}