using System;
using System.Runtime.CompilerServices;
using System.Runtime.InteropServices;

class Program
{
    [StructLayout(LayoutKind.Sequential)]
    unsafe struct S
    {
        fixed byte x[65536];
    }

    class C
    {
        public S s;
    }

    static void Main() => Test(new C());

    [MethodImpl(MethodImplOptions.NoInlining)]
    static void Call(int r0, int r1, int r2, int r3, int r4, int r5, int r6, S s)
    {
    }

    [MethodImpl(MethodImplOptions.NoInlining)]
    static void Test(C c)
    {
        Call(0, 1, 2, 3, 4, 5, 42, c.s);
        Console.WriteLine("done");
    }
}