Merge pull request #900 from Blewzman/FixAggregateExceptionGetBaseException

[mono.git] / mcs / class / corlib / System.Threading.Tasks / TaskFactory.cs

diff --git a/mcs/class/corlib/System.Threading.Tasks/TaskFactory.cs b/mcs/class/corlib/System.Threading.Tasks/TaskFactory.cs
index 9330fd40a5aa19a4517f0a0ef0ccd0c1dc589e49..a558c622c5ebf2cf5a3158394a86ecd9da609966 100644 (file)
--- a/mcs/class/corlib/System.Threading.Tasks/TaskFactory.cs
+++ b/mcs/class/corlib/System.Threading.Tasks/TaskFactory.cs
@@ -214,9 +214,14 @@ namespace System.Threading.Tasks
                                                        TaskCreationOptions creationOptions,
                                                        TaskScheduler scheduler)
                {
-                       Task<TResult> t = new Task<TResult> (function, state, cancellationToken, creationOptions);
-                       t.Start (scheduler);
+                       var t = new Task<TResult> (function, state, cancellationToken, creationOptions);
                        
+                       //
+                       // Don't start cancelled task it would throw an exception
+                       //
+                       if (!t.IsCompleted)
+                               t.Start (scheduler);
+
                        return t;
                }
                #endregion
@@ -305,7 +310,7 @@ namespace System.Threading.Tasks
                {
                        CheckContinueArguments (tasks, continuationFunction, continuationOptions, scheduler);
 
-                       var cont = Task.WhenAnyCore (tasks).ContinueWith<TResult> (TaskActionInvoker.Create (continuationFunction, tasks), cancellationToken, continuationOptions, scheduler);
+                       var cont = Task.WhenAnyCore (tasks).ContinueWith<TResult> (TaskActionInvoker.CreateSelected (continuationFunction), cancellationToken, continuationOptions, scheduler);
 
                        return cont;
                }