Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1996.cs

@@ -0,0 +1,20 @@
+// CS1996: The `await' operator cannot be used in the body of a lock statement
+// Line: 12
+
+using System;
+using System.Threading.Tasks;
+
+class C
+{
+	public async Task Test ()
+	{
+		lock (this) {
+			await Call ();
+		}
+	}
+	
+	static Task Call ()
+	{
+		return null;
+	}
+}