[Boost-bugs] [Boost C++ Libraries] #8371: C++11 once_flag enabled when constexpr is not available

Subject: [Boost-bugs] [Boost C++ Libraries] #8371: C++11 once_flag enabled when constexpr is not available
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2013-04-02 17:48:24

#8371: C++11 once_flag enabled when constexpr is not available
------------------------------+---------------------------------------------
 Reporter:  andysem           |       Owner:  anthonyw
     Type:  Bugs              |      Status:  new     
Milestone:  To Be Determined  |   Component:  thread  
  Version:  Boost 1.53.0      |    Severity:  Problem 
 Keywords:                    |  
------------------------------+---------------------------------------------
 Boost.Thread should disable C++11 interface for call_once (and once_flag
 in particular) when the compiler does not support constexpr. Otherwise
 once_flag construction is not thread safe. This has been brought up in
 [http://news.gmane.org/find-

 root.php?group=gmane.comp.lib.boost.devel&article=239023 this] topic.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/8371>
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