Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1657.cs

@@ -0,0 +1,14 @@
+// CS1657: Cannot pass `i' as a ref or out argument because it is a `foreach iteration variable'
+// Line: 9
+
+class E
+{
+    public E (int[] args)
+    {
+        foreach (int i in args)
+            Init (ref i);
+    }
+    
+    void Init (ref int val) {}
+       
+}