Fix for issue 19817

runtime/vm/service.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 "vm/service.h"
 
 #include "include/dart_api.h"
 #include "platform/globals.h"
 
 #include "vm/compiler.h"
@@ skipping 424 matching lines @@
     // Setup library.
     library = Library::New(url_str);
     library.Register();
     const Script& script = Script::Handle(
       isolate, Script::New(url_str, source_str, RawScript::kLibraryTag));
     library.SetLoadInProgress();
     Dart_EnterScope();  // Need to enter scope for tag handler.
     const Error& error = Error::Handle(isolate,
                                        Compiler::Compile(library, script));
     ASSERT(error.IsNull());
+    Dart_Handle result = Dart_FinalizeLoading(false);
+    ASSERT(!Dart_IsError(result));
     Dart_ExitScope();
-    library.SetLoaded();
+
     // Install embedder default library tag handler again.
     isolate->set_library_tag_handler(embedder_provided_handler_);
     embedder_provided_handler_ = NULL;
     library.set_native_entry_resolver(VmServiceNativeResolver);
   }
   {
     // Boot the dart:vmservice library.
     Dart_EnterScope();
     Dart_Handle result;
     Dart_Handle url_str =
@@ skipping 1925 matching lines @@
   while (current != NULL) {
     if (strcmp(name, current->name()) == 0) {
       return current;
     }
     current = current->next();
   }
   return NULL;
 }
 
 }  // namespace dart