mcs/tests/test-928.cs

   1 // Compiler options: -unsafe
   2
   3 using System;
   4 using System.Reflection;
   5 using System.Linq;
   6
   7 unsafe class Program
   8 {
   9         public static void Test ()
  10         {
  11                 string s = "";
  12                 unsafe {
  13                         fixed (char *chars = s) {
  14                         }
  15                 }
  16         }
  17
  18         public static bool StringNull (string s)
  19         {
  20                 unsafe {
  21                         fixed (char *a = s) {
  22                                 return a == null;
  23                         }
  24                 }
  25         }
  26
  27         public static bool ArrayNull (int[] a)
  28         {
  29                 unsafe {
  30                         fixed (int *e = a) {
  31                                 return e == null;
  32                         }
  33                 }
  34         }
  35
  36         public static int Main ()
  37         {
  38                 Test ();
  39
  40                 var m = typeof (Program).GetMethod ("Test");
  41                 var lv = m.GetMethodBody ().LocalVariables.Where (l => l.LocalType == typeof (char*)).Single ();
  42                 if (lv.IsPinned)
  43                         return 1;
  44
  45                 if (!StringNull (null))
  46                         return 1;
  47
  48                 if (!ArrayNull (null))
  49                         return 2;
  50
  51                 return 0;
  52         }
  53 }