mono/tests/bug-6148.cs

   1 using System;
   2 using System.Runtime.InteropServices;
   3
   4
   5 [StructLayout(LayoutKind.Explicit)]
   6 struct DefaultPack
   7 {
   8         [FieldOffset(0)]
   9                 public int A;
  10         [FieldOffset(4)]
  11                 public int A1;
  12         [FieldOffset(8)]
  13                 public byte A2;
  14
  15         [FieldOffset(9)]
  16                 public int A3;
  17         [FieldOffset(13)]
  18                 public int A4;
  19 }
  20 [StructLayout(LayoutKind.Explicit, Pack=2)]
  21 struct ExplicitPack
  22 {
  23         [FieldOffset(0)]
  24                 public int A;
  25         [FieldOffset(4)]
  26                 public int A1;
  27         [FieldOffset(8)]
  28                 public byte A2;
  29
  30         [FieldOffset(9)]
  31                 public int A3;
  32         [FieldOffset(13)]
  33                 public int A4;
  34 }
  35
  36
  37
  38
  39 public class Program {
  40         public static unsafe int Main(string[] args)
  41         {
  42                 if (sizeof(DefaultPack) != 20)
  43                         return 1;
  44
  45                 if (sizeof(ExplicitPack) != 18)
  46                         return 2;
  47                 return 0;
  48         }
  49 }
  50