go cycles5 源码
golang cycles5 代码
文件路径：/src/cmd/compile/internal/types2/testdata/check/cycles5.go
// Copyright 2017 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 p
import "unsafe"
// test case from issue #18395
type (
A interface { B }
B interface { C }
C interface { D; F() A }
D interface { G() B }
)
var _ = A(nil).G // G must be found
// test case from issue #21804
type sourceBridge interface {
listVersions() ([]Version, error)
}
type Constraint interface {
copyTo(*ConstraintMsg)
}
type ConstraintMsg struct{}
func (m *ConstraintMsg) asUnpairedVersion() UnpairedVersion {
return nil
}
type Version interface {
Constraint
}
type UnpairedVersion interface {
Version
}
var _ Constraint = UnpairedVersion(nil)
// derived test case from issue #21804
type (
_ interface{ m(B1) }
A1 interface{ a(D1) }
B1 interface{ A1 }
C1 interface{ B1 }
D1 interface{ C1 }
)
var _ A1 = C1(nil)
// derived test case from issue #22701
func F(x I4) interface{} {
return x.Method()
}
type Unused interface {
RefersToI1(a I1)
}
type I1 interface {
I2
I3
}
type I2 interface {
RefersToI4() I4
}
type I3 interface {
Method() interface{}
}
type I4 interface {
I1
}
// check embedding of error interface
type Error interface{ error }
var err Error
var _ = err.Error()
// more esoteric cases
type (
T1 interface { T2 }
T2 /* ERROR cycle */ T2
)
type (
T3 interface { T4 }
T4 /* ERROR cycle */ T5
T5 = T6
T6 = T7
T7 = T4
)
// arbitrary code may appear inside an interface
const n = unsafe.Sizeof(func(){})
type I interface {
m([unsafe.Sizeof(func() { I.m(nil, [n]byte{}) })]byte)
}
// test cases for varias alias cycles
type T10 /* ERROR cycle */ = *T10 // issue #25141
type T11 /* ERROR cycle */ = interface{ f(T11) } // issue #23139
// issue #18640
type (
aa = bb
bb struct {
*aa
}
)
type (
a struct{ *b }
b = c
c struct{ *b /* ERROR invalid use of type alias */ }
)
// issue #24939
type (
_ interface {
M(P)
}
M interface {
F() P // ERROR invalid use of type alias
}
P = interface {
I() M
}
)
// issue #8699
type T12 /* ERROR cycle */ [len(a12)]int
var a12 = makeArray()
func makeArray() (res T12) { return }
// issue #20770
var r /* ERROR cycle */ = newReader()
func newReader() r
// variations of the theme of #8699 and #20770
var arr /* ERROR cycle */ = f()
func f() [len(arr)]int
// issue #25790
func ff(ff /* ERROR not a type */ )
func gg((gg /* ERROR not a type */ ))
type T13 /* ERROR cycle */ [len(b13)]int
var b13 T13
func g1() [unsafe.Sizeof(g1)]int
func g2() [unsafe.Sizeof(x2)]int
var x2 = g2
// verify that we get the correct sizes for the functions above
// (note: assert is statically evaluated in go/types test mode)
func init() {
assert(unsafe.Sizeof(g1) == 8)
assert(unsafe.Sizeof(x2) == 8)
}
func h() [h /* ERROR no value */ ()[0]]int { panic(0) }
var c14 /* ERROR cycle */ T14
type T14 [uintptr(unsafe.Sizeof(&c14))]byte
// issue #34333
type T15 /* ERROR cycle */ struct {
f func() T16
b T16
}
type T16 struct {
T15
}
相关信息
相关文章
0
赞
热门推荐
-
2、 - 优质文章
-
3、 gate.io
-
6、 golang
-
7、 openharmony