Give an argument to the List constructor: the List is non extandable.

lib/compiler/implementation/ssa/builder.dart

Index: lib/compiler/implementation/ssa/builder.dart
===================================================================
--- lib/compiler/implementation/ssa/builder.dart	(revision 6750)
+++ lib/compiler/implementation/ssa/builder.dart	(working copy)
@@ -2155,7 +2155,11 @@
       Element originalElement = elements[node];
       if (originalElement.isGenerativeConstructor()
           && originalElement.enclosingElement === compiler.listClass) {
-        type = HType.MUTABLE_ARRAY;
+        if (node.arguments.isEmpty()) {
+          type = HType.MUTABLE_ARRAY;
+        } else {
+          type = HType.READABLE_ARRAY;
+        }
       } else if (element.isGenerativeConstructor()) {
         ClassElement cls = element.enclosingElement;
         type = new HNonPrimitiveType(cls.type);