Fix Mac build.

runtime/vm/class_finalizer.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/class_finalizer.h"
 
 #include "vm/flags.h"
 #include "vm/heap.h"
 #include "vm/isolate.h"
 #include "vm/longjump.h"
@@ skipping 24 matching lines @@
 // b) after the user classes are loaded (dart_api).
 bool ClassFinalizer::FinalizePendingClasses() {
   bool retval = true;
   Isolate* isolate = Isolate::Current();
   ASSERT(isolate != NULL);
   ObjectStore* object_store = isolate->object_store();
   const Error& error = Error::Handle(object_store->sticky_error());
   if (!error.IsNull()) {
     return false;
   }
-  GrowableObjectArray& class_array = GrowableObjectArray::Handle();
-  class_array = object_store->pending_classes();
-  ASSERT(!class_array.IsNull());
-  if (class_array.Length() == 0) {
+  if (AllClassesFinalized()) {
     return true;
   }
   LongJump* base = isolate->long_jump_base();
   LongJump jump;
   isolate->set_long_jump_base(&jump);
   if (setjmp(*jump.Set()) == 0) {
+    GrowableObjectArray& class_array = GrowableObjectArray::Handle();
+    class_array = object_store->pending_classes();
+    ASSERT(!class_array.IsNull());
     Class& cls = Class::Handle();
     // First resolve all superclasses.
     for (intptr_t i = 0; i < class_array.Length(); i++) {
       cls ^= class_array.At(i);
       if (FLAG_trace_class_finalization) {
         OS::Print("Resolving super and default: %s\n", cls.ToCString());
       }
       ResolveSuperType(cls);
       if (cls.is_interface()) {
         ResolveFactoryClass(cls);
@@ skipping 1339 matching lines @@
 void ClassFinalizer::ReportError(const char* format, ...) {
   va_list args;
   va_start(args, format);
   const Error& error = Error::Handle(
       Parser::FormatError(Script::Handle(), -1, "Error", format, args));
   va_end(args);
   ReportError(error);
 }
 
 }  // namespace dart