blob: e5a24495577300b9f1170004af929feb9ab681e1 (
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
|
package main
import (
p0 "./bug0"
p1 "./bug1"
)
// both p0.T and p1.T are struct { X, Y int }.
var v0 p0.T
var v1 p1.T
// interfaces involving the two
type I0 interface {
M(p0.T)
}
type I1 interface {
M(p1.T)
}
// t0 satisfies I0 and p0.I
type t0 int
func (t0) M(p0.T) {}
// t1 satisfies I1 and p1.I
type t1 float64
func (t1) M(p1.T) {}
// check static interface assignments
var i0 I0 = t0(0) // ok
var i1 I1 = t1(0) // ok
var i2 I0 = t1(0) // ERROR "does not implement|incompatible"
var i3 I1 = t0(0) // ERROR "does not implement|incompatible"
var p0i p0.I = t0(0) // ok
var p1i p1.I = t1(0) // ok
var p0i1 p0.I = t1(0) // ERROR "does not implement|incompatible"
var p0i2 p1.I = t0(0) // ERROR "does not implement|incompatible"
func main() {
// check that cannot assign one to the other,
// but can convert.
v0 = v1 // ERROR "assign"
v1 = v0 // ERROR "assign"
v0 = p0.T(v1)
v1 = p1.T(v0)
i0 = i1 // ERROR "cannot use|incompatible"
i1 = i0 // ERROR "cannot use|incompatible"
p0i = i1 // ERROR "cannot use|incompatible"
p1i = i0 // ERROR "cannot use|incompatible"
i0 = p1i // ERROR "cannot use|incompatible"
i1 = p0i // ERROR "cannot use|incompatible"
p0i = p1i // ERROR "cannot use|incompatible"
p1i = p0i // ERROR "cannot use|incompatible"
i0 = p0i
p0i = i0
i1 = p1i
p1i = i1
}
|