Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0728-2.cs

@@ -0,0 +1,15 @@
+// CS0728: Possibly incorrect assignment to `d' which is the argument to a using or lock statement
+// Line: 12
+// Compiler options: -warnaserror
+
+using System;
+
+public class Foo
+{
+	public static void Test (IDisposable d)
+	{
+		using (d) {
+			d = null;
+		}
+	}
+}