[Mono-list] Not all subscribers to event are being called...

[Andrus Moor]

> Yes, as a matter of fact there is. Both the class that is has the event
> (and is calling the event) and the class that is subscribing are based
> on generics. I have a base generic class that takes one type parameter:
>
> abstract public class BasicClass<TKey> { ... }

I tried test below in 64 bit virtual Debian several times and got output

5000 iterations, 77 exceptions
5000 iterations, 57 exceptions
5000 iterations, 46 exceptions
5000 iterations, 115 exceptions
5000 iterations, 68 exceptions
5000 iterations, 78 exceptions

public static class AppMainEntry
{
class TestEntity
{
public int contents { get; set; }
}

[STAThread]
public static void Main()
{
int i = 0, exceptions = 0;
for (; i < 5000; i++)
{
using (var db = new Entity(new Npgsql.NpgsqlConnection(
"host=localhost;DATABASE=test;USER=test;PASSWORD=xxxxx;SSLMODE=Prefer;SSL=True"),
new DbLinq.PostgreSql.PgsqlVendor()))

try
{
db.ExecuteQuery<TestEntity>("SELECT 1 as contents").ToList();
}

catch (Exception ex)
{
exceptions++;
}
}
Console.WriteLine(i.ToString() + " iterations, " + exceptions.ToString() + " 
exceptions");
}

Exceptions occur in DynamicInvoke():

System.InvalidCastException: Cannot cast from source type to destination 
type.
  at System.Delegate.get_Method () [0x00000]
  at System.Delegate.DynamicInvokeImpl (System.Object[] args) [0x00000]
  at System.MulticastDelegate.DynamicInvokeImpl (System.Object[] args) 
[0x00000]
  at System.Delegate.DynamicInvoke (System.Object[] args) [0x00000]
  at 
DbLinq.Data.Linq.Sugar.Implementation.QueryRunner+<EnumerateResult>d__b.MoveNext 
() [0x00000]
  at 
DbLinq.Data.Linq.Sugar.Implementation.QueryRunner+<ExecuteSelect>d__0.MoveNext 
() [0x00000]
  at 
DbLinq.Data.Linq.DataContext+<CreateExecuteQueryEnumerable>d__d`1[Eeva.UI.AppMainEntry+TestEntity].MoveNext 
() [0x00000]
  at 
System.Collections.Generic.List`1[Myapp.UI.AppMainEntry+TestEntity].AddEnumerable 
(IEnumerable`1 enumerable) [0x00000]
  at 
System.Collections.Generic.List`1[Myapp.UI.AppMainEntry+TestEntity]..ctor 
(IEnumerable`1 collection) [0x00000]
  at System.Linq.Enumerable.ToList[TestEntity] (IEnumerable`1 source) 
[0x00000]
  at Myapp.UI.AppMainEntry.Main () [0x00000]

monotest at mono:~/www/htdocs/demo/bin$ mono --version
Mono JIT compiler version 2.5 (/trunk/mono r135592 Sat Jun  6 15:56:42 EEST 
2009)
Copyright (C) 2002-2008 Novell, Inc and Contributors. www.mono-project.com
        TLS:           __thread
        GC:            Included Boehm (with typed GC and Parallel Mark)
        SIGSEGV:       altstack
        Notifications: epoll
        Architecture:  amd64
        Disabled:      none

monotest at mono:~/www/htdocs/demo/bin$ uname -a
Linux mono.test.xxxxx.com 2.6.18.8-xenU #3 SMP Fri Apr 24 13:30:30 EEST 2009 
x86_64 GNU/Linux

How to fix this ?

Andrus.