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
|
// Copyright 2015 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.
package main
func fail() // unimplemented, to test dead code elimination
// Test dead code elimination in if statements
func init() {
if false {
fail()
}
if 0 == 1 {
fail()
}
}
// Test dead code elimination in ordinary switch statements
func init() {
const x = 0
switch x {
case 1:
fail()
}
switch 1 {
case x:
fail()
}
switch {
case false:
fail()
}
const a = "a"
switch a {
case "b":
fail()
}
const snowman = '☃'
switch snowman {
case '☀':
fail()
}
const zero = float64(0.0)
const one = float64(1.0)
switch one {
case -1.0:
fail()
case zero:
fail()
}
switch 1.0i {
case 1:
fail()
case -1i:
fail()
}
const no = false
switch no {
case true:
fail()
}
}
func main() {
}
|
