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64b260dbde
Same as CL 421880, but for test directory. Updates #46731 Change-Id: If8d18df013a6833adcbd40acc1a721bbc23ca6b2 Reviewed-on: https://go-review.googlesource.com/c/go/+/421881 Reviewed-by: Keith Randall <khr@golang.org> Reviewed-by: Heschi Kreinick <heschi@google.com> Run-TryBot: Cuong Manh Le <cuong.manhle.vn@gmail.com> Reviewed-by: Keith Randall <khr@google.com> TryBot-Result: Gopher Robot <gobot@golang.org>
35 lines
619 B
Go
35 lines
619 B
Go
// run
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// 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 cgo
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package main
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import (
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"log"
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"runtime/cgo"
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"unsafe"
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)
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type S struct{ _ cgo.Incomplete }
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func main() {
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p := (*S)(unsafe.Pointer(uintptr(0x8000)))
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var v any = p
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p2 := v.(*S)
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if p != p2 {
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log.Fatalf("%p != %p", unsafe.Pointer(p), unsafe.Pointer(p2))
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}
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p2 = typeAssert[*S](v)
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if p != p2 {
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log.Fatalf("%p != %p from typeAssert", unsafe.Pointer(p), unsafe.Pointer(p2))
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}
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}
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func typeAssert[T any](v any) T {
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return v.(T)
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}
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