/usr/share/go-1.6/test/interface/receiver1.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 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 | // errorcheck
// 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.
// Verify compiler complains about missing implicit methods.
// Does not compile.
package main
type T int
func (t T) V()
func (t *T) P()
type V interface {
V()
}
type P interface {
P()
V()
}
type S struct {
T
}
type SP struct {
*T
}
func main() {
var t T
var v V
var p P
var s S
var sp SP
v = t
p = t // ERROR "does not implement|requires a pointer"
_, _ = v, p
v = &t
p = &t
_, _ = v, p
v = s
p = s // ERROR "does not implement|requires a pointer"
_, _ = v, p
v = &s
p = &s
_, _ = v, p
v = sp
p = sp // no error!
_, _ = v, p
v = &sp
p = &sp
_, _ = v, p
}
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