Change new List(n) to return fixed length list.

runtime/lib/string_base.dart

Index: runtime/lib/string_base.dart
diff --git a/runtime/lib/string_base.dart b/runtime/lib/string_base.dart
index bb39e4ee64622afc0931f512777dd33f9aeba987..83cbb91b40d2ea3ffbc6205d6b14808c5fada105 100644
--- a/runtime/lib/string_base.dart
+++ b/runtime/lib/string_base.dart
@@ -347,7 +347,7 @@ class _StringBase {
    */
   static String _interpolate(List values) {
     int numValues = values.length;
-    var stringList = new List.fixedLength(numValues);
+    var stringList = new _ObjectArray(numValues);

[floitsch, 2013/02/26 13:54:19]

new List(numValues) doesn't work?

[Lasse Reichstein Nielsen, 2013/02/26 15:26:00]

It didn't at some point, probably before I changed the constructor-recognition
in the VM.

     for (int i = 0; i < numValues; i++) {
       stringList[i] = values[i].toString();
     }