Imported Upstream version 5.10.0.47

Former-commit-id: d0813289fa2d35e1f8ed77530acb4fb1df441bc0

mcs/tests/test-default-02.cs

@@ -0,0 +1,21 @@
+// Compiler options: -langversion:latest
+
+class C
+{
+    static void Main()
+    {
+        M (default, 1);
+
+        M2 (default);
+        M2 (null);        
+    }
+
+
+    static void M<T> (T x, T y)
+    {
+    }
+
+    static void M2 (params object[] x)
+    {        
+    }
+}