Imported Upstream version 3.6.0

Former-commit-id: da6be194a6b1221998fc28233f2503bd61dd9d14

mcs/errors/cs1654.cs

@@ -0,0 +1,20 @@
+// CS1654: Cannot assign to members of `p' because it is a `foreach iteration variable'
+// Line: 18
+
+using System.Collections;
+
+struct P {
+	public int x;
+}
+
+class Test {
+	static IEnumerable foo () { return null; }
+
+	static void Main ()
+	{
+		IEnumerable f = foo ();
+		if (f != null)
+			foreach (P p in f)
+				p.x = 0;
+	}
+}