Imported Upstream version 5.18.0.142

Former-commit-id: 7467d4b717762eeaf652d77f1486dd11ffb1ff1f

mcs/errors/cs1611-2.cs

@@ -0,0 +1,8 @@
+// CS1611: The params parameter cannot be declared as ref, out or in
+// Line: 6
+// Compiler options: -langversion:latest
+
+class Test
+{
+    public static void Error (params in int args) {}
+}