golang issue21770 代码
文件路径：/test/fixedbugs/issue21770.go
/ errorcheck
/ Copyright 2017 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.
/ Issue 21770: gccgo incorrectly accepts "p.f = 0" where p is **struct
package p
type PP **struct{ f int }
func f() {
/ anonymous type
var p **struct{ f int }
p.f = 0 / ERROR "field"
/ named type
var p2 PP
p2.f = 0 / ERROR "field"
}