| // 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") | |
| } | |
| } |