Issues #1173 - Add exception handler to entry point FilterLoader

src/plugin/PluginTabBase.cpp

 /*
  * This file is part of Adblock Plus <https://adblockplus.org/>,
  * Copyright (C) 2006-2015 Eyeo GmbH
  *
  * Adblock Plus is free software: you can redistribute it and/or modify
  * it under the terms of the GNU General Public License version 3 as
  * published by the Free Software Foundation.
  *
  * Adblock Plus is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
@@ skipping 66 matching lines @@
 }
 
 
 void CPluginTabBase::OnUpdate()
 {
   m_isActivated = true;
 }
 
 namespace
 {
+  // Entry Point
   void FilterLoader(CPluginTabBase* tabBase)
   {
-    tabBase->m_filter->LoadHideFilters(CPluginClient::GetInstance()->GetElementHidingSelectors(tabBase->GetDocumentDomain()));
-    SetEvent(tabBase->m_filter->hideFiltersLoadedEvent);
+    try
+    {
+      tabBase->m_filter->LoadHideFilters(CPluginClient::GetInstance()->GetElementHidingSelectors(tabBase->GetDocumentDomain()));
+      SetEvent(tabBase->m_filter->hideFiltersLoadedEvent);
+    }
+    catch (...)
+    {
+      // As a thread-main function, we truncate any C++ exception.
+    }
   }
 }
 
 void CPluginTabBase::OnNavigate(const std::wstring& url)
 {
   SetDocumentUrl(url);
   ClearFrameCache(GetDocumentDomain());
   std::wstring domainString = GetDocumentDomain();
   ResetEvent(m_filter->hideFiltersLoadedEvent);
   try
@@ skipping 265 matching lines @@
           CPluginClient::LogPluginError(pluginError.GetErrorCode(), pluginError.GetErrorId(), pluginError.GetErrorSubid(), pluginError.GetErrorDescription(), true, pluginError.GetProcessId(), pluginError.GetThreadId());
         }
 
         // Non-hanging sleep
         Sleep(50);
       }
 
       tabLoopIteration++;
   }
 }