Imported Upstream version 3.10.0

Former-commit-id: 172c8e3c300b39d5785c7a3e8dfb08ebdbc1a99b

mcs/errors/cs8072-2.cs

@@ -0,0 +1,16 @@
+// CS8072: An expression tree cannot contain a null propagating operator
+// Line: 14
+
+using System;
+using System.Linq.Expressions;
+
+public class C
+{
+	public void TestMethod () { }
+
+	static void Main ()
+	{
+		C c = null;
+		Expression<Action> e = () => c?.TestMethod ();
+	}
+}