相关疑难解决方法(0)

这导致AccessViolationException抛出:

using System;

namespace TestApplication
{
    internal static class Program
    {
        private static unsafe void Main()
        {
            ulong* addr = (ulong*)Int64.MaxValue;
            ulong val = *addr;
        }
    }
}

这会导致NullReferenceException抛出:

using System;

namespace TestApplication
{
    internal static class Program
    {
        private static unsafe void Main()
        {
            ulong* addr = (ulong*)0x000000000000FF;
            ulong val = *addr;
        }
    }
}

它们都是无效指针,都违反了内存访问规则.为什么NullReferenceException？