add CancelWaiter assert (dotnet#44510)

Co-authored-by: Geoffrey Kizer <geoffrek@windows.microsoft.com>
eerhardt · Nov 11, 2020 · 1625da3 · 1625da3
1 parent aa04371
commit 1625da3
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/src/libraries/Common/src/System/Net/StreamBuffer.cs b/src/libraries/Common/src/System/Net/StreamBuffer.cs
@@ -333,6 +333,8 @@ public void SignalWaiter()
 
             private void CancelWaiter(CancellationToken cancellationToken)
             {
+                Debug.Assert(cancellationToken.IsCancellationRequested);
+
                 if (Interlocked.Exchange(ref _hasWaiter, 0) == 1)
                 {
                     _waitSource.SetException(ExceptionDispatchInfo.SetCurrentStackTrace(new OperationCanceledException(cancellationToken)));