/usr/share/go-1.7/test/char_lit.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  | // 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.
// Test character literal syntax.
package main
import "os"
func main() {
	var i uint64 =
		' ' +
		'a' +
		'ä' +
		'本' +
		'\a' +
		'\b' +
		'\f' +
		'\n' +
		'\r' +
		'\t' +
		'\v' +
		'\\' +
		'\'' +
		'\000' +
		'\123' +
		'\x00' +
		'\xca' +
		'\xFE' +
		'\u0123' +
		'\ubabe' +
		'\U0010FFFF' +
		'\U000ebabe'
	if '\U000ebabe' != 0x000ebabe {
		print("ebabe wrong\n")
		os.Exit(1)
	}
	if i != 0x20e213 {
		print("number is ", i, " should be ", 0x20e213, "\n")
		os.Exit(1)
	}
}
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