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issue51733.go
// run // 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 cgo package main import ( "log" "runtime/cgo" "unsafe" ) type S struct{ _ cgo.Incomplete } func main() { p := (*S)(unsafe.Pointer(uintptr(0x8000))) var v any = p p2 := v.(*S) if p != p2 { log.Fatalf("%p != %p", unsafe.Pointer(p), unsafe.Pointer(p2)) } p2 = typeAssert[*S](v) if p != p2 { log.Fatalf("%p != %p from typeAssert", unsafe.Pointer(p), unsafe.Pointer(p2)) } } func typeAssert[T any](v any) T { return v.(T) }
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