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go/test/unsafe_slice_data.go
cuiweixie c708532936 cmd/compile: add support for unsafe.{String,StringData,SliceData}
For #53003

Change-Id: I13a761daca8b433b271a1feb711c103d9820772d
Reviewed-on: https://go-review.googlesource.com/c/go/+/423774
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Matthew Dempsky <mdempsky@google.com>
Reviewed-by: hopehook <hopehook@golangcn.org>
Reviewed-by: Cuong Manh Le <cuong.manhle.vn@gmail.com>
Reviewed-by: Keith Randall <khr@golang.org>
Run-TryBot: Matthew Dempsky <mdempsky@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
2022-08-31 17:15:15 +00:00

23 lines
481 B
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.
package main
import (
"fmt"
"reflect"
"unsafe"
)
func main() {
var s = []byte("abc")
sh1 := *(*reflect.SliceHeader)(unsafe.Pointer(&s))
ptr2 := unsafe.Pointer(unsafe.SliceData(s))
if ptr2 != unsafe.Pointer(sh1.Data) {
panic(fmt.Errorf("unsafe.SliceData %p != %p", ptr2, unsafe.Pointer(sh1.Data)))
}
}