summaryrefslogtreecommitdiff
path: root/test/indirect.go
blob: 06c1dcce7b100f6c2400c98bb50629a7ebf7e9f8 (plain)
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
// $G $D/$F.go && $L $F.$A && ./$A.out || echo BUG indirect

// 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.

package main

var m0 map[string]int
var m1 *map[string]int
var m2 *map[string]int = &m0
var m3 map[string]int = map[string]int{"a": 1}
var m4 *map[string]int = &m3

var s0 string
var s1 *string
var s2 *string = &s0
var s3 string = "a"
var s4 *string = &s3

var a0 [10]int
var a1 *[10]int
var a2 *[10]int = &a0

var b0 []int
var b1 *[]int
var b2 *[]int = &b0
var b3 []int = []int{1, 2, 3}
var b4 *[]int = &b3

func crash() {
	// these uses of nil pointers
	// would crash but should type check
	println("crash",
		len(a1) + cap(a1));
}

func nocrash() {
	// this is spaced funny so that
	// the compiler will print a different
	// line number for each len call if
	// it decides there are type errors.
	// it might also help in the traceback.
	x :=
		len(m0)+
		len(m3);
	if x != 1 {
		panicln("wrong maplen");
	}

	x =
		len(s0)+
		len(s3);
	if x != 1 {
		panicln("wrong stringlen");
	}

	x =
		len(a0)+
		len(a2);
	if x != 20 {
		panicln("wrong arraylen");
	}

	x =
		len(b0)+
		len(b3);
	if x != 3 {
		panicln("wrong slicelen");
	}

	x =
		cap(b0)+
		cap(b3);
	if x != 3 {
		panicln("wrong slicecap");
	}
}

func main() {
	nocrash();
}