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// 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")
}
}