Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0612-6.cs

@@ -0,0 +1,25 @@
+// CS0612: `E.GetEnumerator()' is obsolete
+// Line: 22
+// Compiler options: -warnaserror
+
+using System.Collections;
+using System;
+
+class E : IEnumerable
+{
+	[Obsolete]
+	public IEnumerator GetEnumerator ()
+	{
+		throw new System.NotImplementedException ();
+	}
+}
+
+class C
+{
+	public static void Main ()
+	{
+		var e = new E ();
+		foreach (var entry in e) {
+		}
+	}
+}