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	: 216.73.216.8
	: 82.25.127.225 / nivaandassociates.com
	: Linux in-mum-web845.main-hosting.eu 4.18.0-553.40.1.lve.el8.x86_64 #1 SMP Wed Feb 12 18:54:57 UTC 2025 x86_64

: /opt/golang/1.17.2/test/

files >> //opt/golang/1.17.2/test/gcstring.go

 // run

// Copyright 2014 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 s[len(s):] - which can point past the end of the allocated block -
// does not confuse the garbage collector.

package main

import (
	"runtime"
	"time"
)

type T struct {
	ptr **int
	pad [120]byte
}

var things []interface{}

func main() {
	setup()
	runtime.GC()
	runtime.GC()
	time.Sleep(10*time.Millisecond)
	runtime.GC()
	runtime.GC()
	time.Sleep(10*time.Millisecond)
}

func setup() {
	var Ts []interface{}
	buf := make([]byte, 128)
	
	for i := 0; i < 10000; i++ {
		s := string(buf)
		t := &T{ptr: new(*int)}
		runtime.SetFinalizer(t.ptr, func(**int) { panic("*int freed too early") })
		Ts = append(Ts, t)
		things = append(things, s[len(s):])
	}
	
	things = append(things, Ts...)
}