/usr/share/go-1.6/test/fixedbugs/bug177.go is in golang-1.6-src 1.6.1-0ubuntu1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 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 | // run
// Copyright 2009 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 "reflect"
type S1 struct{ i int }
type S2 struct{ S1 }
func main() {
	typ := reflect.TypeOf(S2{})
	f := typ.Field(0)
	if f.Name != "S1" || f.Anonymous != true {
		println("BUG: ", f.Name, f.Anonymous)
		return
	}
	f, ok := typ.FieldByName("S1")
	if !ok {
		println("BUG: missing S1")
		return
	}
	if !f.Anonymous {
		println("BUG: S1 is not anonymous")
		return
	}
}
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