Fix for issue 19817

runtime/vm/bootstrap.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 "vm/bootstrap.h"
 
 #include "include/dart_api.h"
 
 #include "vm/bootstrap_natives.h"
+#include "vm/class_finalizer.h"
 #include "vm/compiler.h"
 #include "vm/dart_api_impl.h"
 #include "vm/object.h"
 #include "vm/object_store.h"
 #include "vm/symbols.h"
 
 namespace dart {
 
 #define INIT_LIBRARY(index, name, source, patch)                               \
   { index,                                                                     \
@@ skipping 284 matching lines @@
                              lib,
                              patch_uri,
                              bootstrap_libraries[i].patch_paths_);
       if (!error.IsNull()) {
         break;
       }
     }
   }
   if (error.IsNull()) {
     SetupNativeResolver();
+    ClassFinalizer::ProcessPendingClasses();
   }
 
   // Restore the library tag handler for the isolate.
   isolate->set_library_tag_handler(saved_tag_handler);
 
   return error.raw();
 }
 
 }  // namespace dart