1// errorcheck
2
3// Copyright 2011 The Go Authors.  All rights reserved.
4// Use of this source code is governed by a BSD-style
5// license that can be found in the LICENSE file.
6
7// Verify that illegal composite literals are detected.
8// Does not compile.
9
10package main
11
12var m map[int][3]int
13
14func f() [3]int
15
16func fp() *[3]int
17
18var mp map[int]*[3]int
19
20var (
21	_ = [3]int{1, 2, 3}[:] // ERROR "slice of unaddressable value"
22	_ = m[0][:]            // ERROR "slice of unaddressable value"
23	_ = f()[:]             // ERROR "slice of unaddressable value"
24
25	// these are okay because they are slicing a pointer to an array
26	_ = (&[3]int{1, 2, 3})[:]
27	_ = mp[0][:]
28	_ = fp()[:]
29)
30
31type T struct {
32	i    int
33	f    float64
34	s    string
35	next *T
36}
37
38var (
39	_ = &T{0, 0, "", nil}               // ok
40	_ = &T{i: 0, f: 0, s: "", next: {}} // ERROR "missing type in composite literal|omit types within composite literal"
41	_ = &T{0, 0, "", {}}                // ERROR "missing type in composite literal|omit types within composite literal"
42)
43
44type M map[T]T
45
46var (
47	_ = M{{i:1}: {i:2}}
48	_ = M{T{i:1}: {i:2}}
49	_ = M{{i:1}: T{i:2}}
50	_ = M{T{i:1}: T{i:2}}
51)
52
53type S struct { s [1]*M1 }
54type M1 map[S]int
55var _ = M1{{s:[1]*M1{&M1{{}:1}}}:2}
56
57