Imported Upstream version 5.0.0.42

Former-commit-id: fd56571888259555122d8a0f58c68838229cea2b

mcs/class/referencesource/mscorlib/system/threading/CancellationTokenSource.cs

@@ -1080,7 +1080,9 @@ namespace System.Threading
     /// <typeparam name="T">The kind of elements contained within.</typeparam>
     internal class SparselyPopulatedArray<T> where T : class
     {
+#if DEBUG        
         private readonly SparselyPopulatedArrayFragment<T> m_head;
+#endif
         private volatile SparselyPopulatedArrayFragment<T> m_tail;
 
         /// <summary>
@@ -1089,7 +1091,10 @@ namespace System.Threading
         /// <param name="initialSize">How many array slots to pre-allocate.</param>
         internal SparselyPopulatedArray(int initialSize)
         {
-            m_head = m_tail = new SparselyPopulatedArrayFragment<T>(initialSize);
+#if DEBUG            
+            m_head = 
+#endif
+            m_tail = new SparselyPopulatedArrayFragment<T>(initialSize);
         }
 
 #if DEBUG

mcs/class/referencesource/mscorlib/system/threading/Tasks/FutureFactory.cs.REMOVED.git-id

@@ -1 +1 @@
-4168909f0dd17449e19e6aed3039bce3e82ce073
+21ec1d7b8346d780a4a059738ca4bb8f908e7f5c

mcs/class/referencesource/mscorlib/system/threading/Tasks/Parallel.cs.REMOVED.git-id

@@ -1 +1 @@
-2b64b423d8e28a317807644569681db96f0c3521
+89ae7f7d20e98d27c2f40234107dd5d469f715c5

mcs/class/referencesource/mscorlib/system/threading/Tasks/ParallelLoopState.cs

@@ -412,7 +412,9 @@ namespace System.Threading.Tasks
     /// </summary>
     internal class ParallelLoopStateFlags
     {
+#pragma warning disable 649        
         internal static int PLS_NONE;
+#pragma warning restore
         internal static int PLS_EXCEPTIONAL = 1;
         internal static int PLS_BROKEN = 2;
         internal static int PLS_STOPPED = 4;
@@ -439,7 +441,9 @@ namespace System.Threading.Tasks
             {
                 oldState = m_LoopStateFlags;
                 if ((oldState & illegalStates) != 0) return false;
+#pragma warning disable 420
                 if (Interlocked.CompareExchange(ref m_LoopStateFlags, oldState | newState, oldState) == oldState)
+#pragma warning restore
                 {
                     return true;
                 }

mcs/class/referencesource/mscorlib/system/threading/Tasks/TaskContinuation.cs

@@ -550,7 +550,9 @@ namespace System.Threading.Tasks
         /// <summary>The action to invoke.</summary>
         protected readonly Action m_action;
 
+#if !MONO
         protected int m_continuationId;
+#endif
 
         /// <summary>Initializes the continuation.</summary>
         /// <param name="action">The action to invoke. Must not be null.</param>

mcs/class/referencesource/mscorlib/system/threading/eventwaithandle.cs

@@ -122,8 +122,9 @@ namespace System.Threading
                 throw new ArgumentException(Environment.GetResourceString("Argument_WaitHandleNameTooLong",name));
             }
             Contract.EndContractBlock();
-            Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
 #if !MONO
+            Win32Native.SECURITY_ATTRIBUTES secAttrs = null;
+
 #if FEATURE_MACL
             // For ACL's, get the security descriptor from the EventWaitHandleSecurity.
             if (eventSecurity != null) {

mcs/class/referencesource/mscorlib/system/threading/threadpool.cs

@@ -579,7 +579,9 @@ namespace System.Threading
         // The head and tail of the queue.  We enqueue to the head, and dequeue from the tail.
         internal volatile QueueSegment queueHead;
         internal volatile QueueSegment queueTail;
+#if !MONO        
         internal bool loggingEnabled;
+#endif
 
         internal static SparseArray<WorkStealingQueue> allThreadQueues = new SparseArray<WorkStealingQueue>(16); //