Imported Upstream version 3.10.0

Former-commit-id: 172c8e3c300b39d5785c7a3e8dfb08ebdbc1a99b

mcs/errors/cs1644-44.cs

@@ -0,0 +1,15 @@
+// CS1644: Feature `dictionary initializer' cannot be used because it is not part of the C# 5.0 language specification
+// Line: 12
+// Compiler options: -langversion:5
+
+using System.Collections.Generic;
+
+class C
+{
+	public static void Main ()
+	{
+		var d = new Dictionary<string, int> {
+			["a"] = 1
+		};
+	}
+}