| Linux in-mum-web1499.main-hosting.eu 5.14.0-503.40.1.el9_5.x86_64 #1 SMP PREEMPT_DYNAMIC Mon May 5 06:06:04 EDT 2025 x86_64 Path : /opt/golang/1.22.0/test/ |
| Current File : //opt/golang/1.22.0/test/strcopy.go |
// run
// Copyright 2018 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.
// Test that string([]byte(string)) makes a copy and doesn't reduce to
// nothing. (Issue 25834)
package main
import (
"reflect"
"unsafe"
)
func main() {
var (
buf = make([]byte, 2<<10)
large = string(buf)
sub = large[10:12]
subcopy = string([]byte(sub))
subh = *(*reflect.StringHeader)(unsafe.Pointer(&sub))
subcopyh = *(*reflect.StringHeader)(unsafe.Pointer(&subcopy))
)
if subh.Data == subcopyh.Data {
panic("sub and subcopy have the same underlying array")
}
}