Work around issue 131 by checking for empty handles

src/api.cc

 // Copyright 2007-2008 the V8 project authors. All rights reserved.
 // Redistribution and use in source and binary forms, with or without
 // modification, are permitted provided that the following conditions are
 // met:
 //
 //     * Redistributions of source code must retain the above copyright
 //       notice, this list of conditions and the following disclaimer.
 //     * Redistributions in binary form must reproduce the above
 //       copyright notice, this list of conditions and the following
 //       disclaimer in the documentation and/or other materials provided
@@ skipping 212 matching lines @@
 }
 
 
 void V8::SetFlagsFromCommandLine(int* argc, char** argv, bool remove_flags) {
   i::FlagList::SetFlagsFromCommandLine(argc, argv, remove_flags);
 }
 
 
 v8::Handle<Value> ThrowException(v8::Handle<v8::Value> value) {
   if (IsDeadCheck("v8::ThrowException()")) return v8::Handle<Value>();
-  i::Top::ScheduleThrow(*Utils::OpenHandle(*value));
+  // If we're passed an empty handle, we throw an undefined exception
+  // to deal more gracefully with out of memory situations.
+  if (value.IsEmpty()) {
+    i::Top::ScheduleThrow(i::Heap::undefined_value());
+  } else {
+    i::Top::ScheduleThrow(*Utils::OpenHandle(*value));
+  }
   return v8::Undefined();
 }
 
 
 RegisteredExtension* RegisteredExtension::first_extension_ = NULL;
 
 
 RegisteredExtension::RegisteredExtension(Extension* extension)
     : extension_(extension), state_(UNVISITED) { }
 
@@ skipping 2713 matching lines @@
       reinterpret_cast<HandleScopeImplementer*>(storage);
   List<void**>* blocks_of_archived_thread = thread_local->Blocks();
   ImplementationUtilities::HandleScopeData* handle_data_of_archived_thread =
       &thread_local->handle_scope_data_;
   Iterate(v, blocks_of_archived_thread, handle_data_of_archived_thread);
 
   return storage + ArchiveSpacePerThread();
 }
 
 } }  // namespace v8::internal