Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1998.cs

@@ -0,0 +1,18 @@
+// CS1998: Async block lacks `await' operator and will run synchronously
+// Line: 10
+// Compiler options: -warnaserror
+
+using System;
+using System.Threading.Tasks;
+
+class C
+{
+	static async Task<int> Method ()
+	{
+		return 0;
+	}
+	
+	public static void Main ()
+	{
+	}
+}