I forgot to filter a machine-dependent field in the service unit test.

runtime/vm/service_test.cc

 // 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.
 
 #include "include/dart_debugger_api.h"
 #include "vm/dart_api_impl.h"
 #include "vm/dart_entry.h"
 #include "vm/debugger.h"
 #include "vm/globals.h"
 #include "vm/message_handler.h"
@@ skipping 33 matching lines @@
     int key_len = strlen(key);
     int old_len = strlen(_msg);
     char* new_msg = reinterpret_cast<char*>(malloc(old_len + 1));
     int old_pos = 0;
     int new_pos = 0;
     while (_msg[old_pos] != '\0') {
       if (_msg[old_pos] == '\"') {
         old_pos++;
         if ((old_len - old_pos) > key_len &&
             strncmp(&_msg[old_pos], key, key_len) == 0 &&
-            _msg[old_pos + key_len + 2] == '\"') {
+            _msg[old_pos + key_len] == '\"') {
           old_pos += (key_len + 2);
           // Skip until next , or }.
           while (_msg[old_pos] != '\0' &&
                  _msg[old_pos] != ',' &&
                  _msg[old_pos] != '}') {
             old_pos++;
           }
           if (_msg[old_pos] == ',') {
             old_pos++;
           }
@@ skipping 382 matching lines @@
       "{\"type\":\"Smi\",\"id\":\"objects\\/int-123\","
       "\"class\":{\"type\":\"@Class\",\"id\":\"classes\\/42\","
       "\"user_name\":\"int\"},\"preview\":\"123\"}",
       handler.msg());
 
   // object id ring / valid
   service_msg = Eval(lib, "[port, ['objects', '$validId'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
+  handler.filterMsg("size");
   EXPECT_STREQ(
       "{\"type\":\"String\",\"id\":\"objects\\/1\","
       "\"class\":{\"type\":\"@Class\",\"id\":\"classes\\/60\","
       "\"user_name\":\"String\"},\"preview\":\"\\\"value\\\"\","
-      "\"fields\":[],\"size\":24}",
+      "\"fields\":[],}",
       handler.msg());
 
   // object id ring / invalid => expired
   service_msg = Eval(lib, "[port, ['objects', '99999999'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   handler.filterMsg("name");
   EXPECT_STREQ(
       "{\"type\":\"Null\",\"id\":\"objects\\/expired\","
       "\"preview\":\"<expired>\"}",
@@ skipping 507 matching lines @@
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   EXPECT_STREQ("alpha", handler.msg());
   service_msg = Eval(lib, "[port, ['beta'], [], []]");
   Service::HandleIsolateMessage(isolate, service_msg);
   handler.HandleNextMessage();
   EXPECT_STREQ("beta", handler.msg());
 }
 
 }  // namespace dart