Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0117-4.cs

@@ -0,0 +1,14 @@
+// CS0117: `System.Runtime.CompilerServices.IndexerNameAttribute' does not contain a definition for `errorarg'
+// Line: 
+
+using System.Runtime.CompilerServices;
+
+public class E
+{
+   [IndexerName("xxx", errorarg = "")]
+   public int this[int index] {
+      get {
+         return 0;
+      }
+   }
+}