Fix error reporting when calling static methods and closures withh mismatched arguments.

runtime/lib/object.cc

 // Copyright (c) 2011, 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.
 
 #include "vm/bootstrap_natives.h"
 
 #include "vm/exceptions.h"
 #include "vm/native_entry.h"
 #include "vm/object.h"
 #include "vm/stack_frame.h"
@@ skipping 22 matching lines @@
   const Array& dart_arguments = Array::Handle(Array::New(6));
   dart_arguments.SetAt(0, instance);
   dart_arguments.SetAt(1, member_name);
   dart_arguments.SetAt(2, invocation_type);
   dart_arguments.SetAt(3, func_args);
   dart_arguments.SetAt(4, func_named_args);
 
   if (is_method.value()) {
     // Report if a function with same name (but different arguments) has been
     // found.
-    Class& instance_class = Class::Handle(instance.clazz());
-    Function& function =
-        Function::Handle(instance_class.LookupDynamicFunction(member_name));
-    while (function.IsNull()) {
-      instance_class = instance_class.SuperClass();
-      if (instance_class.IsNull()) break;
+    Function& function = Function::Handle();
+    if (instance.IsClosure()) {
+      function = Closure::function(instance);
+    } else {
+      Class& instance_class = Class::Handle(instance.clazz());
       function = instance_class.LookupDynamicFunction(member_name);
+      while (function.IsNull()) {
+        instance_class = instance_class.SuperClass();
+        if (instance_class.IsNull()) break;
+        function = instance_class.LookupDynamicFunction(member_name);
+      }
     }
     if (!function.IsNull()) {
       const int total_num_parameters = function.NumParameters();
       const Array& array = Array::Handle(Array::New(total_num_parameters - 1));
       // Skip receiver.
       for (int i = 1; i < total_num_parameters; i++) {
         array.SetAt(i - 1, String::Handle(function.ParameterNameAt(i)));
       }
       dart_arguments.SetAt(5, array);
     }
@@ skipping 102 matching lines @@
 }
 
 
 DEFINE_NATIVE_ENTRY(AbstractType_toString, 1) {
   const AbstractType& type =
       AbstractType::CheckedHandle(arguments->NativeArgAt(0));
   return type.UserVisibleName();
 }
 
 }  // namespace dart