/usr/share/go-1.8/test/fixedbugs/issue4909a.go is in golang-1.8-src 1.8.3-2ubuntu1.
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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 | // errorcheck
// Copyright 2013 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 4909: compiler incorrectly accepts unsafe.Offsetof(t.x)
// where x is a field of an embedded pointer field.
package p
import (
"unsafe"
)
type T struct {
A int
*B
}
func (t T) Method() {}
type B struct {
X, Y int
}
var t T
var p *T
const N1 = unsafe.Offsetof(t.X) // ERROR "indirection"
const N2 = unsafe.Offsetof(p.X) // ERROR "indirection"
const N3 = unsafe.Offsetof(t.B.X) // valid
const N4 = unsafe.Offsetof(p.B.X) // valid
const N5 = unsafe.Offsetof(t.Method) // ERROR "method value"
const N6 = unsafe.Offsetof(p.Method) // ERROR "method value"
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