Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/errors/cs8200-4.cs

@@ -0,0 +1,15 @@
+// CS8200: Out variable and pattern variable declarations are not allowed within constructor initializers, field initializers, or property initializers
+// Line: 8
+
+using System;
+
+public class C
+{
+	event Action H = Foo (out var res);
+
+	static Action Foo (out int arg)
+	{
+		arg = 2;
+		return null;
+	}
+}