- Represent strings internally in UTF-16 format, this makes it

runtime/bin/test_extension.cc

 // Copyright (c) 2012, 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 <string.h>
 
 #include "include/dart_api.h"
 
 Dart_NativeFunction ResolveName(Dart_Handle name, int argc);
 
 DART_EXPORT Dart_Handle test_extension_Init(Dart_Handle parent_library) {
   if (Dart_IsError(parent_library)) { return parent_library; }
 
   Dart_Handle result_code = Dart_SetNativeResolver(parent_library, ResolveName);
   if (Dart_IsError(result_code)) return result_code;
 
   return parent_library;
 }
 
 void IfNull(Dart_NativeArguments arguments) {
   Dart_Handle object = Dart_GetNativeArgument(arguments, 0);
   if (Dart_IsNull(object)) {
     Dart_SetReturnValue(arguments, Dart_GetNativeArgument(arguments, 1));
   } else {
     Dart_SetReturnValue(arguments, object);
   }
 }
 
 Dart_NativeFunction ResolveName(Dart_Handle name, int argc) {
-  assert(Dart_IsString8(name));
+  assert(Dart_IsString(name));
   const char* cname;
   Dart_Handle check_error;
 
   check_error = Dart_StringToCString(name, &cname);
   if (Dart_IsError(check_error)) {
     Dart_PropagateError(check_error);
   }
   if (!strcmp("TestExtension_IfNull", cname) && argc == 2) {
     return IfNull;
   }
   return NULL;
 }