using System;

public class Program

{

    static void test(Span<int> param)

    {

        //Fail, the stackalloc'ed buffer could be exposed.

        param = stackalloc int[10];

    }

    static void test2(Span<int> param)

    {

        //OK

        Span<int> local = stackalloc int[10];

    }

    public static void Main()

    {

    }

}