mirror of
https://github.com/golang/go
synced 2024-11-14 15:20:43 -07:00
26 lines
451 B
Go
26 lines
451 B
Go
|
// Copyright 2022 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 (
|
||
|
|
"fmt"
|
||
|
|
"unsafe"
|
||
|
|
)
|
||
|
|
|
||
|
|
var intGlo int
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
r := bar(&intGlo)
|
||
|
|
fmt.Printf("r value is %d", r)
|
||
|
|
}
|
||
|
|
|
||
|
|
func bar(a *int) int {
|
||
|
|
p := (*int)(unsafe.Add(unsafe.Pointer(a), 1*unsafe.Sizeof(int(1))))
|
||
|
|
if *p == 10 { // BOOM
|
||
|
|
fmt.Println("its value is 10")
|
||
|
|
}
|
||
|
|
return *p
|
||
|
|
}
|