Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-async-28.cs

@@ -0,0 +1,17 @@
+using System.Linq;
+using System.Threading.Tasks;
+
+class C
+{
+	public static async Task Test ()
+	{
+		Task<int[]> d = Task.FromResult (new[] { 1, 4, 5 });
+		var r = from x in await d select x;
+		var res = r.ToList ();
+	}
+
+	public static void Main ()
+	{
+		Test ().Wait ();
+	}
+}