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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.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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//go:build goexperiment.arenas
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package main
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import "arena"
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func main() {
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a := arena.NewArena()
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x := arena.New[[200]byte](a)
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x[0] = 9
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a.Free()
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// Use after free.
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//
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// ASAN should detect this deterministically as Free
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// should poison the arena memory.
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//
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// MSAN should detect that this access is to freed
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// memory. This may crash with an "accessed freed arena
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// memory" error before MSAN gets a chance, but if MSAN
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// was not enabled there would be a chance that this
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// could fail to crash on its own.
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println(x[0])
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}
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