Imported Upstream version 5.4.0.167

Former-commit-id: 5624ac747d633e885131e8349322922b6a59baaa

mcs/errors/cs8200-5.cs

@@ -0,0 +1,12 @@
+// CS8200: Out variable and pattern variable declarations are not allowed within constructor initializers, field initializers, or property initializers
+// Line: 6
+
+public class C
+{
+	bool res = Foo () is string s;
+
+	static object Foo ()
+	{
+		return null;
+	}
+}