Imported Upstream version 5.2.0.175

Former-commit-id: bb0468d0f257ff100aa895eb5fe583fb5dfbf900

mcs/tests/test-async-91.cs

@@ -0,0 +1,38 @@
+using System;
+using System.Threading.Tasks;
+
+class C : IDisposable
+{
+	public void Dispose ()
+	{
+		Console.WriteLine ("Disposed");
+		TestClass.Passed++;
+	}
+}
+
+public class TestClass
+{
+	public static int Passed;
+
+	public static async Task Test ()
+	{
+		using (var device_resource = new C ()) {
+			try {
+				Console.WriteLine ("aa");
+				return;
+			} finally {
+				await Task.Delay (0);
+			}
+		}
+	}
+
+	public static int Main()
+	{
+		Test ().Wait ();
+		if (Passed != 1)
+			return 1;
+
+		Console.WriteLine ("PASSED");
+		return 0;
+	}
+}