mono/tests/exception18.cs

   1 using System;
   2 using System.Linq;
   3 using System.Runtime.CompilerServices;
   4
   5 class C
   6 {
   7         static Exception e;
   8
   9         static void Throw ()
  10         {
  11                 try {
  12                         int.Parse (null);
  13                 } catch (Exception ex) {
  14                         e = ex;
  15                 }
  16         }
  17
  18         static int FrameCount (Exception ex)
  19         {
  20                         string fullTrace = ex.StackTrace;
  21                         string[] frames = fullTrace.Split(new string[] { Environment.NewLine }, StringSplitOptions.None);
  22
  23                         // Ignore metadata
  24                         frames = frames.Where (l => !l.StartsWith ("[")).ToArray ();
  25
  26                         return frames.Length;
  27         }
  28
  29         public static void Main ()
  30         {
  31                 Throw ();
  32
  33                 try {
  34                         throw e;
  35                 } catch (Exception ex) {
  36                         int frames = FrameCount (ex);
  37                         if (frames != 1)
  38                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported one.", frames));
  39                 }
  40
  41                 try {
  42                         try {
  43                                 int.Parse (null);
  44                         } catch (Exception) {
  45                                 throw;
  46                         }
  47                 } catch (Exception ex) {
  48                         int frames = FrameCount (ex);
  49                         if (frames != 4)
  50                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported four.", frames));
  51                 }
  52
  53                 try {
  54                         new C ().M1a ();
  55                 } catch (Exception ex) {
  56                         int frames = FrameCount (ex);
  57                         if (frames != 4)
  58                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported four.", frames));
  59                 }
  60
  61                 try {
  62                         new C ().M1b ();
  63                 } catch (Exception ex) {
  64                         int frames = FrameCount (ex);
  65                         if (frames != 3)
  66                                 throw new Exception (String.Format("Exception carried {0} frames along with it when it should have reported three.", frames));
  67                 }
  68         }
  69
  70         [MethodImpl(MethodImplOptions.NoInlining)]
  71         private void M1a ()
  72         {
  73                 M2a ();
  74         }
  75
  76         [MethodImpl(MethodImplOptions.NoInlining)]
  77         private void M1b ()
  78         {
  79                 M2b ();
  80         }
  81
  82         [MethodImpl(MethodImplOptions.NoInlining)]
  83         private void M2a ()
  84         {
  85                 try {
  86                         M3 ();
  87                 } catch {
  88                         throw;
  89                 }
  90         }
  91
  92         [MethodImpl(MethodImplOptions.NoInlining)]
  93         private void M2b ()
  94         {
  95                 try {
  96                         M3 ();
  97                 } catch (Exception ex) {
  98                         throw ex;
  99                 }
 100         }
 101
 102         [MethodImpl(MethodImplOptions.NoInlining)]
 103         private void M3 ()
 104         {
 105                 throw new NotImplementedException ();
 106         }
 107 }