mcs/tests/test-401.cs

   1 // Compiler options: -unsafe
   2
   3 //
   4 // This test excercises stackalloc, some pointer arithmetic,
   5 // and dereferences
   6 //
   7 using System;
   8 unsafe class X {
   9         public static int Main ()
  10         {
  11                 char *ptr = stackalloc char [10];
  12                 char *cptr = ptr;
  13                 int i;
  14                 long l = 0;
  15                 ulong ul = 0;
  16                 byte b = 0;
  17
  18                 for (i = 0; i < 10; i++)
  19                         ptr [i] = (char) (i + 10);
  20
  21                 for (i = 0; i < 10; i++){
  22                         if (*ptr != (char) (i + 10))
  23                                 return 200 + i;
  24                         ptr++;
  25                 }
  26
  27
  28                 // Now test index access with longs
  29                 if (cptr [l] != 10){
  30                         return 1;
  31                 }
  32                 if (cptr [ul] != 10)
  33                         return 2;
  34                 if (cptr [b] != 10)
  35                         return 3;
  36
  37                 //
  38                 // Try to compile non-int values
  39                 //
  40                 byte* bptr = (byte*) 5;
  41                 ushort us = 3;
  42                 byte* ret = (byte*) (bptr + us);
  43
  44                 Console.WriteLine ("Ok");
  45                 return 0;
  46         }
  47 }
  48
  49