Re: [Boost-bugs] [Boost C++ Libraries] #6320: race condition in boost::filesystem::path leads to crash when used in multithreaded programs

Subject: Re: [Boost-bugs] [Boost C++ Libraries] #6320: race condition in boost::filesystem::path leads to crash when used in multithreaded programs
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-05-09 16:28:48

#6320: race condition in boost::filesystem::path leads to crash when used in
multithreaded programs
-------------------------------+-------------------------
  Reporter:  aris.basic@…      |      Owner:  bemandawes
      Type:  Bugs              |     Status:  reopened
 Milestone:  To Be Determined  |  Component:  filesystem
   Version:  Boost 1.62.0      |   Severity:  Showstopper
Resolution:                    |   Keywords:
-------------------------------+-------------------------

Comment (by anonymous):

 Just noticed that one load could be spared:
 {{{
 std::locale& path_locale()
 {
   std::locale* locale = nullptr;
   if (!(locale = locale_pointer().load()))
   {
     std::lock_guard<std::mutex> l(locale_mutex());
     if (!(locale = locale_pointer().load()))
     {
       locale_unique_ptr() =
 std::make_unique<std::locale>(default_locale());
       locale_pointer().store(locale = locale_unique_ptr().get());
     }
   }
   return *locale;
 }
 }}}

-- 
Ticket URL: <https://svn.boost.org/trac/boost/ticket/6320#comment:28>
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