Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs4016.cs

@@ -0,0 +1,14 @@
+// CS4016: `C.GetValue()': The return expression type of async method must be `int' rather than `Task<int>'
+// Line: 12
+
+using System;
+using System.Threading.Tasks;
+
+class C
+{
+	public async Task<int> GetValue()
+	{
+		await Task.FromResult (0);
+		return Task.FromResult (1);
+	}
+}