Imported Upstream version 3.10.0

Former-commit-id: 172c8e3c300b39d5785c7a3e8dfb08ebdbc1a99b

mcs/tests/test-null-operator-07.cs

@@ -0,0 +1,24 @@
+using System;
+
+public static class C
+{
+	static int Main()
+	{
+		int[] a = null;
+		var r = a?.EM ().EM ().EM () ?? "N";
+		if (r != "N")
+			return 1;
+
+		a?.EM ().EM ();
+
+		return 0;
+	}
+
+	static string EM (this object arg)
+	{
+		if (arg == null)
+			throw new ApplicationException ();
+
+		return "";
+	}
+}