summaryrefslogtreecommitdiffstats
path: root/test/assign.go
blob: bdec58b710f4210a7741a6973a5cd4ed0ce64211 (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
// 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 simple assignment errors are caught by the compiler.
// Does not compile.

package main

import "sync"

type T struct {
	int
	sync.Mutex
}

func main() {
	{
		var x, y sync.Mutex
		x = y // ok
		_ = x
	}
	{
		var x, y T
		x = y // ok
		_ = x
	}
	{
		var x, y [2]sync.Mutex
		x = y // ok
		_ = x
	}
	{
		var x, y [2]T
		x = y // ok
		_ = x
	}
	{
		x := sync.Mutex{0, 0} // ERROR "assignment.*Mutex"
		_ = x
	}
	{
		x := sync.Mutex{key: 0} // ERROR "(unknown|assignment).*Mutex"
		_ = x
	}
	{
		x := &sync.Mutex{} // ok
		var y sync.Mutex   // ok
		y = *x             // ok
		*x = y             // ok
		_ = x
		_ = y
	}
	{
		var x = 1
		{
			x, x := 2, 3 // ERROR ".*x.* repeated on left side of :=|x redeclared in this block"
			_ = x
		}
		_ = x
	}
	{
		a, a := 1, 2 // ERROR ".*a.* repeated on left side of :=|a redeclared in this block"
		_ = a
	}
}