mirror of
https://github.com/golang/go
synced 2024-11-05 23:36:12 -07:00
24 lines
453 B
Go
24 lines
453 B
Go
|
// run -gcflags=-d=checkptr
|
||
|
|
||
|
// Copyright 2020 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
|
||
|
|
||
|
import "unsafe"
|
||
|
|
||
|
func main() {
|
||
|
var x [2]uint64
|
||
|
a := unsafe.Pointer(&x[1])
|
||
|
|
||
|
b := a
|
||
|
b = unsafe.Pointer(uintptr(b) + 2)
|
||
|
b = unsafe.Pointer(uintptr(b) - 1)
|
||
|
b = unsafe.Pointer(uintptr(b) &^ 1)
|
||
|
|
||
|
if a != b {
|
||
|
panic("pointer arithmetic failed")
|
||
|
}
|
||
|
}
|