List constructor sentinel must not implement 'int'

pkg/compiler/lib/src/cps_ir/cps_ir_builder_task.dart

 // Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library dart2js.ir_builder_task;
 
 import '../closure.dart' as closure;
 import '../common.dart';
 import '../common/names.dart' show
     Names,
@@ skipping 1887 matching lines @@
       ConstructorElement current = constructor;
       while (current.isRedirectingFactory) {
         var prefix = current.redirectionDeferredPrefix;
         if (prefix != null) buildCheckDeferredIsLoaded(prefix, send);
         current = current.immediateRedirectionTarget;
       }
     }
 
     List<ir.Primitive> arguments = argumentsNode.nodes.mapToList(visit);
     // Use default values from the effective target, not the immediate target.
-    ConstructorElement target = constructor.effectiveTarget;
+    ConstructorElement target = constructor.implementation;
+    while (target.isRedirectingFactory && !target.isCyclicRedirection) {
+      target = target.effectiveTarget.implementation;
+    }
 
     callStructure = normalizeStaticArguments(callStructure, target, arguments);
     TypeMask allocationSiteType;
 
     if (Elements.isFixedListConstructorCall(constructor, send, compiler) ||
         Elements.isGrowableListConstructorCall(constructor, send, compiler) ||
         Elements.isFilledListConstructorCall(constructor, send, compiler) ||
         Elements.isConstructorOfTypedArraySubclass(constructor, compiler)) {
       allocationSiteType = getAllocationSiteType(send);
     }
+    ConstructorElement constructorImplementation = constructor.implementation;
     return irBuilder.buildConstructorInvocation(
         target,
         callStructure,
-        constructor.computeEffectiveTargetType(type),
+        constructorImplementation.computeEffectiveTargetType(type),
         arguments,
         sourceInformationBuilder.buildNew(node),
         allocationSiteType: allocationSiteType);
   }
 
   @override
   ir.Primitive handleDynamicInvoke(
       ast.Send node,
       ast.Node receiver,
       ast.NodeList argumentsNode,
@@ skipping 1656 matching lines @@
   }
 
   Element get closureConverter {
     return _backend.helpers.closureConverter;
   }
 
   void addNativeMethod(FunctionElement function) {
     _backend.emitter.nativeEmitter.nativeMethods.add(function);
   }
 }