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b282efa022
Avoids false positive pointer arithmetic panic. Fixes #35027. Change-Id: Idd008caaab25fcf739327ac50a021b835ef13def Reviewed-on: https://go-review.googlesource.com/c/go/+/202560 Run-TryBot: Matthew Dempsky <mdempsky@google.com> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Brad Fitzpatrick <bradfitz@golang.org>
23 lines
395 B
Go
23 lines
395 B
Go
// run -gcflags=-d=checkptr
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// Copyright 2019 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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package main
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import (
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"reflect"
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"unsafe"
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)
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var s []int
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func main() {
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s = []int{42}
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h := (*reflect.SliceHeader)(unsafe.Pointer(&s))
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x := *(*int)(unsafe.Pointer(h.Data))
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if x != 42 {
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panic(x)
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}
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}
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