Imported Upstream version 5.12.0.220

Former-commit-id: c477e03582759447177c6d4bf412cd2355aad476

mcs/tests/test-tuple-08.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Collections.Generic;
+using System.Threading.Tasks;
+
+class X
+{
+	public static void Main ()
+	{
+		var x = new X ();
+		x.Test ().Wait ();
+	}
+
+	int a, b;
+
+	async Task Test ()
+	{
+		(a, b) = await Waiting ();
+	}
+
+	Task<(int, int)> Waiting ()
+	{
+		return Task.FromResult ((1, 3));
+	}
+}