summaryrefslogtreecommitdiffstats
path: root/test/fixedbugs/issue36516.go
blob: d4e28b636d5b4d7dd83420092e21da4098f1dd9e (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
// +build cgo,linux,amd64
// run -race

// 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 (
	"fmt"
	"testing"
	"unsafe"
)

var buf [2]byte
var x unsafe.Pointer = unsafe.Pointer(&buf[0])

func main() {
	n := testing.AllocsPerRun(1000, func() {
		x = unsafe.Pointer(uintptr(x) + 1)
		x = unsafe.Pointer(uintptr(x) - 1)
	})
	if n > 0 {
		panic(fmt.Sprintf("too many allocations; want 0 got %f", n))
	}
}