golang b 代码
文件路径：/test/fixedbugs/bug460.dir/b.go
// 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.
package b
import "./a"
var x a.Foo
func main() {
x.int = 20 // ERROR "unexported field|undefined"
x.int8 = 20 // ERROR "unexported field|undefined"
x.error = nil // ERROR "unexported field|undefined"
x.rune = 'a' // ERROR "unexported field|undefined"
x.byte = 20 // ERROR "unexported field|undefined"
}