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deep_go/lessons/allocator/arena_problem_3/main.go

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package main
// GOEXPERIMENT=arenas go run main.go
// go run -tags goexperiment.arenas main.go
import (
"arena"
"fmt"
)
type Data struct {
deposit int
credit int
}
func main() {
a := arena.NewArena()
data := arena.New[Data](a)
a.Free()
// use after free
fmt.Println(data)
}