[Mono-list] Null task exception when doing ContinueWith

Giuliano Barberi gbarberi at aotaonline.com
Fri May 2 11:17:10 UTC 2014

Hey guys I'm seeing something strange. It could totally be user error but I
can't seem to figure it out.

I am doing this on some tasks that I never await in order to get the
        public static Task CatchUnhandledException(this Task task)
            return task.ContinueWith(continuation =>

| TaskContinuationOptions.OnlyOnFaulted);

and the Engine.UnhandledExceptionHandler just logs the exception.

What's strange is that the exception is null and also doing
an Environment.StackTrace in the handler also yields nothing. I do have
--debug with the mdb files so I would suspect to get the full stacktrace. I
never saw this issue when I was running on .NET runtime but I also have
added more async code since so I'm not sure if it's something with Mono or
my app. I just can't find anything online and the documentation for Tasks
says that if it's faulted state there will be an exception.

Giuliano Barberi
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