This file is indexed.

/usr/share/go-1.7/test/undef.go is in golang-1.7-src 1.7.4-2.

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
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
// errorcheck

// Copyright 2010 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.

// Test line numbers in error messages.
// Does not compile.

package main

var (
	_ = x	// ERROR "undefined.*x"
	_ = x	// ERROR "undefined.*x"
	_ = x	// ERROR "undefined.*x"
)

type T struct {
	y int
}

func foo() *T { return &T{y: 99} }
func bar() int { return y }	// ERROR "undefined.*y"

type T1 struct {
	y1 int
}

func foo1() *T1 { return &T1{y1: 99} }
var y1 = 2
func bar1() int { return y1 }

func f1(val interface{}) {
	switch v := val.(type) {
	default:
		println(v)
	}
}

func f2(val interface{}) {
	switch val.(type) {
	default:
		println(v)	// ERROR "undefined.*v"
	}
}