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master
test/fixedbugs/issue51733.go
34 строки
619 B
Cherry Mui
cmd/link: only add dummy XCOFF reference if the symbol exists
02 сен 2022, 18:27
02 сен 2022, 18:27
321a220
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// 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) }