/usr/share/go-1.10/test/copy1.go is in golang-1.10-src 1.10.1-1ubuntu2.
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 | // 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.
// Verify that copy arguments requirements are enforced by the
// compiler.
package main
func main() {
si := make([]int, 8)
sf := make([]float64, 8)
_ = copy() // ERROR "missing arguments"
_ = copy(1, 2, 3) // ERROR "too many arguments"
_ = copy(si, "hi") // ERROR "have different element types.*int.*string"
_ = copy(si, sf) // ERROR "have different element types.*int.*float64"
_ = copy(1, 2) // ERROR "must be slices; have int, int"
_ = copy(1, si) // ERROR "first argument to copy should be"
_ = copy(si, 2) // ERROR "second argument to copy should be"
}
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