mirror of
https://github.com/golang/go
synced 2024-11-25 08:37:57 -07:00
b6f0632e93
Previously, whether declaring a type which copied the structure of a type it was referenced in via a pointer field would work depended on whether you declared it before or after the type it copied, e.g. type T2 T1; type T1 struct { F *T2 } would work, however type T1 struct { F *T2 }; type T2 T1 wouldn't.
Fixes #667.
R=rsc
CC=golang-dev
https://golang.org/cl/4313064
87 lines
1.2 KiB
Go
87 lines
1.2 KiB
Go
// $G $D/$F.go && $L $F.$A && ./$A.out
|
|
|
|
// Copyright 2011 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
|
|
|
|
type T1 struct {
|
|
Next *T2
|
|
}
|
|
|
|
type T2 T1
|
|
|
|
type T3 struct {
|
|
Next *T4
|
|
}
|
|
|
|
type T4 T5
|
|
type T5 T6
|
|
type T6 T7
|
|
type T7 T8
|
|
type T8 T9
|
|
type T9 T3
|
|
|
|
type T10 struct {
|
|
x struct {
|
|
y ***struct {
|
|
z *struct {
|
|
Next *T11
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
type T11 T10
|
|
|
|
type T12 struct {
|
|
F1 *T15
|
|
F2 *T13
|
|
F3 *T16
|
|
}
|
|
|
|
type T13 T14
|
|
type T14 T15
|
|
type T15 T16
|
|
type T16 T17
|
|
type T17 T12
|
|
|
|
// issue 1672
|
|
type T18 *[10]T19
|
|
type T19 T18
|
|
|
|
func main() {
|
|
_ = &T1{&T2{}}
|
|
_ = &T2{&T2{}}
|
|
_ = &T3{&T4{}}
|
|
_ = &T4{&T4{}}
|
|
_ = &T5{&T4{}}
|
|
_ = &T6{&T4{}}
|
|
_ = &T7{&T4{}}
|
|
_ = &T8{&T4{}}
|
|
_ = &T9{&T4{}}
|
|
_ = &T12{&T15{}, &T13{}, &T16{}}
|
|
|
|
var (
|
|
tn struct{ Next *T11 }
|
|
tz struct{ z *struct{ Next *T11 } }
|
|
tpz *struct{ z *struct{ Next *T11 } }
|
|
tppz **struct{ z *struct{ Next *T11 } }
|
|
tpppz ***struct{ z *struct{ Next *T11 } }
|
|
ty struct {
|
|
y ***struct{ z *struct{ Next *T11 } }
|
|
}
|
|
)
|
|
tn.Next = &T11{}
|
|
tz.z = &tn
|
|
tpz = &tz
|
|
tppz = &tpz
|
|
tpppz = &tppz
|
|
ty.y = tpppz
|
|
_ = &T10{ty}
|
|
|
|
t19s := &[10]T19{}
|
|
_ = T18(t19s)
|
|
}
|