Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/tests/test-212.cs

@@ -0,0 +1,25 @@
+//
+// A compilation test - params with implicit user conversion
+//
+
+class Problem {
+        string somedata;
+
+        public Problem(string somedata) {
+                this.somedata = somedata;
+        }
+        public static implicit operator Problem(int x) {
+                return new Problem("" + x);
+        }
+
+        public static int Multi(int first, params Problem[] rest) {
+                return rest.Length;
+        }
+
+        public static int Main(string[] args) {
+                Problem[] ps = new Problem[] { 1, 2, 3 }; // ok
+                Multi (1, 2, 3, 4); // fails to compile
+
+                return 0;
+        }
+}