Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs0579-13.cs

@@ -0,0 +1,26 @@
+// CS0579: The attribute `ConditionalAttributeTesting.SomeAttribute' cannot be applied multiple times
+// Line: 12
+
+using System;
+using System.Diagnostics;
+
+namespace ConditionalAttributeTesting
+{
+	class MainClass
+	{
+		[Some ("Test")]
+		[Some ("Test2")]
+		public static void Test ()
+		{
+		}
+	}
+
+	[AttributeUsage (AttributeTargets.All)]
+	[Conditional ("NOT_DEFINED")]
+	public sealed class SomeAttribute : Attribute
+	{
+		public SomeAttribute (string someText)
+		{
+		}
+	}
+}