mirror of
https://github.com/golang/go
synced 2024-11-07 04:26:14 -07:00
29 lines
564 B
Go
29 lines
564 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"
|
||
|
|
)
|
||
|
|
|
||
|
|
func main() {
|
||
|
|
a := 1
|
||
|
|
b := 2
|
||
|
|
c := add(a, b)
|
||
|
|
d := a + b
|
||
|
|
fmt.Println(c, d)
|
||
|
|
}
|
||
|
|
|
||
|
|
//go:noinline
|
||
|
|
func add(a1, b1 int) (ret int) {
|
||
|
|
// The return value
|
||
|
|
// When -asan is enabled, the unsafe.Pointer(&ret) conversion is escaping.
|
||
|
|
var p *int = (*int)(unsafe.Pointer(uintptr(unsafe.Pointer(&ret)) + 1*unsafe.Sizeof(int(1))))
|
||
|
|
*p = 123 // BOOM
|
||
|
|
ret = a1 + b1
|
||
|
|
return
|
||
|
|
}
|