.config/coc/extensions/coc-go-data/tools/pkg/mod/golang.org/x/tools@v0.0.0-20201028153306-37f0764111ff/go/analysis/passes/cgocall/testdata/src/a/cgo.go

   1 // Copyright 2015 The Go Authors. All rights reserved.
   2 // Use of this source code is governed by a BSD-style
   3 // license that can be found in the LICENSE file.
   4
   5 // This file contains tests for the cgo checker.
   6
   7 package a
   8
   9 // void f(void *ptr) {}
  10 import "C"
  11
  12 import "unsafe"
  13
  14 func CgoTests() {
  15         var c chan bool
  16         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&c))) // want "embedded pointer"
  17         C.f(unsafe.Pointer(&c))                     // want "embedded pointer"
  18
  19         var m map[string]string
  20         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&m))) // want "embedded pointer"
  21         C.f(unsafe.Pointer(&m))                     // want "embedded pointer"
  22
  23         var f func()
  24         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&f))) // want "embedded pointer"
  25         C.f(unsafe.Pointer(&f))                     // want "embedded pointer"
  26
  27         var s []int
  28         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&s))) // want "embedded pointer"
  29         C.f(unsafe.Pointer(&s))                     // want "embedded pointer"
  30
  31         var a [1][]int
  32         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&a))) // want "embedded pointer"
  33         C.f(unsafe.Pointer(&a))                     // want "embedded pointer"
  34
  35         var st struct{ f []int }
  36         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&st))) // want "embedded pointer"
  37         C.f(unsafe.Pointer(&st))                     // want "embedded pointer"
  38
  39         var st3 S
  40         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&st3))) // want "embedded pointer"
  41         C.f(unsafe.Pointer(&st3))                     // want "embedded pointer"
  42
  43         // The following cases are OK.
  44         var i int
  45         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&i)))
  46         C.f(unsafe.Pointer(&i))
  47
  48         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&s[0])))
  49         C.f(unsafe.Pointer(&s[0]))
  50
  51         var a2 [1]int
  52         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&a2)))
  53         C.f(unsafe.Pointer(&a2))
  54
  55         var st2 struct{ i int }
  56         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&st2)))
  57         C.f(unsafe.Pointer(&st2))
  58
  59         var st4 S2
  60         C.f(*(*unsafe.Pointer)(unsafe.Pointer(&st4)))
  61         C.f(unsafe.Pointer(&st4))
  62
  63         type cgoStruct struct{ p *cgoStruct }
  64         C.f(unsafe.Pointer(&cgoStruct{}))
  65
  66         C.CBytes([]byte("hello"))
  67 }
  68
  69 type S struct{ slice []int }
  70
  71 type S2 struct{ int int }