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8f854244ad
Make sure the argument to memmove is of pointer type before we try to get the element type. This has been noticed for code that uses unsafe+linkname so it can call runtime.memmove. Probably not the best thing to allow, but the code is out there and we'd rather not break it unnecessarily. Fixes #30061 Change-Id: I334a8453f2e293959fd742044c43fbe93f0b3d31 Reviewed-on: https://go-review.googlesource.com/c/160826 Run-TryBot: Keith Randall <khr@golang.org> Reviewed-by: Ian Lance Taylor <iant@golang.org> TryBot-Result: Gobot Gobot <gobot@golang.org>
21 lines
465 B
Go
21 lines
465 B
Go
// compile
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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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// Make sure we can linkname to memmove with an unsafe.Pointer argument.
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package p
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import "unsafe"
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//go:linkname memmove runtime.memmove
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func memmove(to, from unsafe.Pointer, n uintptr)
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var V1, V2 int
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func F() {
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memmove(unsafe.Pointer(&V1), unsafe.Pointer(&V2), unsafe.Sizeof(int(0)))
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}
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