Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0831.cs

@@ -0,0 +1,21 @@
+// CS0831: An expression tree may not contain a base access
+// Line: 14
+
+using System;
+using System.Linq.Expressions;
+
+class B
+{
+	protected int Core ()
+	{
+		return 4;
+	}
+}
+
+class C : B
+{
+	public void Test ()
+	{
+		Expression<Func<int>> e = () => base.Core ();
+	}
+}