mirror of
https://github.com/golang/go
synced 2024-11-08 11:56:16 -07:00
6a2a11fc28
While we're here, replace a couple uses of os.Environ with cmd.Environ. For #51317. Change-Id: Ic5cf4a887a7975a8281223eec0f94df230b6f095 Reviewed-on: https://go-review.googlesource.com/c/go/+/431955 TryBot-Result: Gopher Robot <gobot@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> Run-TryBot: Michael Knyszek <mknyszek@google.com> Reviewed-by: Cherry Mui <cherryyz@google.com>
28 lines
700 B
Go
28 lines
700 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.
|
|
|
|
//go:build goexperiment.arenas
|
|
|
|
package main
|
|
|
|
import "arena"
|
|
|
|
func main() {
|
|
a := arena.NewArena()
|
|
x := arena.New[[200]byte](a)
|
|
x[0] = 9
|
|
a.Free()
|
|
// Use after free.
|
|
//
|
|
// ASAN should detect this deterministically as Free
|
|
// should poison the arena memory.
|
|
//
|
|
// MSAN should detect that this access is to freed
|
|
// memory. This may crash with an "accessed freed arena
|
|
// memory" error before MSAN gets a chance, but if MSAN
|
|
// was not enabled there would be a chance that this
|
|
// could fail to crash on its own.
|
|
println(x[0])
|
|
}
|