/usr/share/go-1.6/test/interface/struct.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 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 | // 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 interface values containing structures.
package main
import "os"
var fail int
func check(b bool, msg string) {
if (!b) {
println("failure in", msg)
fail++
}
}
type I1 interface { Get() int; Put(int) }
type S1 struct { i int }
func (p S1) Get() int { return p.i }
func (p S1) Put(i int) { p.i = i }
func f1() {
s := S1{1}
var i I1 = s
i.Put(2)
check(i.Get() == 1, "f1 i")
check(s.i == 1, "f1 s")
}
func f2() {
s := S1{1}
var i I1 = &s
i.Put(2)
check(i.Get() == 1, "f2 i")
check(s.i == 1, "f2 s")
}
func f3() {
s := &S1{1}
var i I1 = s
i.Put(2)
check(i.Get() == 1, "f3 i")
check(s.i == 1, "f3 s")
}
type S2 struct { i int }
func (p *S2) Get() int { return p.i }
func (p *S2) Put(i int) { p.i = i }
// Disallowed by restriction of values going to pointer receivers
// func f4() {
// s := S2{1}
// var i I1 = s
// i.Put(2)
// check(i.Get() == 2, "f4 i")
// check(s.i == 1, "f4 s")
// }
func f5() {
s := S2{1}
var i I1 = &s
i.Put(2)
check(i.Get() == 2, "f5 i")
check(s.i == 2, "f5 s")
}
func f6() {
s := &S2{1}
var i I1 = s
i.Put(2)
check(i.Get() == 2, "f6 i")
check(s.i == 2, "f6 s")
}
type I2 interface { Get() int64; Put(int64) }
type S3 struct { i, j, k, l int64 }
func (p S3) Get() int64 { return p.l }
func (p S3) Put(i int64) { p.l = i }
func f7() {
s := S3{1, 2, 3, 4}
var i I2 = s
i.Put(5)
check(i.Get() == 4, "f7 i")
check(s.l == 4, "f7 s")
}
func f8() {
s := S3{1, 2, 3, 4}
var i I2 = &s
i.Put(5)
check(i.Get() == 4, "f8 i")
check(s.l == 4, "f8 s")
}
func f9() {
s := &S3{1, 2, 3, 4}
var i I2 = s
i.Put(5)
check(i.Get() == 4, "f9 i")
check(s.l == 4, "f9 s")
}
type S4 struct { i, j, k, l int64 }
func (p *S4) Get() int64 { return p.l }
func (p *S4) Put(i int64) { p.l = i }
// Disallowed by restriction of values going to pointer receivers
// func f10() {
// s := S4{1, 2, 3, 4}
// var i I2 = s
// i.Put(5)
// check(i.Get() == 5, "f10 i")
// check(s.l == 4, "f10 s")
// }
func f11() {
s := S4{1, 2, 3, 4}
var i I2 = &s
i.Put(5)
check(i.Get() == 5, "f11 i")
check(s.l == 5, "f11 s")
}
func f12() {
s := &S4{1, 2, 3, 4}
var i I2 = s
i.Put(5)
check(i.Get() == 5, "f12 i")
check(s.l == 5, "f12 s")
}
func main() {
f1()
f2()
f3()
// f4()
f5()
f6()
f7()
f8()
f9()
// f10()
f11()
f12()
if fail > 0 {
os.Exit(1)
}
}
|