misc/cgo/test/issue21897.go

   1 // Copyright 2017 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 //go:build darwin && cgo && !internal
   6
   7 package cgotest
   8
   9 /*
  10 #cgo LDFLAGS: -framework CoreFoundation
  11 #include <CoreFoundation/CoreFoundation.h>
  12 */
  13 import "C"
  14 import (
  15         "runtime/debug"
  16         "testing"
  17         "unsafe"
  18 )
  19
  20 func test21897(t *testing.T) {
  21         // Please write barrier, kick in soon.
  22         defer debug.SetGCPercent(debug.SetGCPercent(1))
  23
  24         for i := 0; i < 10000; i++ {
  25                 testCFNumberRef()
  26                 testCFDateRef()
  27                 testCFBooleanRef()
  28                 // Allocate some memory, so eventually the write barrier is enabled
  29                 // and it will see writes of bad pointers in the test* functions below.
  30                 byteSliceSink = make([]byte, 1024)
  31         }
  32 }
  33
  34 var byteSliceSink []byte
  35
  36 func testCFNumberRef() {
  37         var v int64 = 0
  38         xCFNumberRef = C.CFNumberCreate(C.kCFAllocatorSystemDefault, C.kCFNumberSInt64Type, unsafe.Pointer(&v))
  39         //fmt.Printf("CFNumberRef: %x\n", uintptr(unsafe.Pointer(xCFNumberRef)))
  40 }
  41
  42 var xCFNumberRef C.CFNumberRef
  43
  44 func testCFDateRef() {
  45         xCFDateRef = C.CFDateCreate(C.kCFAllocatorSystemDefault, 0) // 0 value is 1 Jan 2001 00:00:00 GMT
  46         //fmt.Printf("CFDateRef: %x\n", uintptr(unsafe.Pointer(xCFDateRef)))
  47 }
  48
  49 var xCFDateRef C.CFDateRef
  50
  51 func testCFBooleanRef() {
  52         xCFBooleanRef = C.kCFBooleanFalse
  53         //fmt.Printf("CFBooleanRef: %x\n", uintptr(unsafe.Pointer(xCFBooleanRef)))
  54 }
  55
  56 var xCFBooleanRef C.CFBooleanRef