C# 不安全代碼指針

unsafe void Process (int[,] data){
   int length = data.Length;
   fixed (int* b = data){
      int* p = b;
      for (int i = 0; i < length; i++)
          *p++ &= 0xFF;
    }
}

class Main {
   int x;
   static void Main(){
      Test test = new Test();
      unsafe{
         fixed (int* p = &test.x) // Pins test
         {
            *p = 0;
         }
         System.Console.WriteLine (test.x);
      }
   }
}

struct Test{
   int x;
   unsafe static void Main(){
      Test test = new Test();
      Test* p = &test;
      p->x = 1;
      System.Console.WriteLine (test.x);
   }
}