[Boost-bugs] [Boost C++ Libraries] #12977: BOOST_NO_CXX11_HDR_MUTEX always defined when Clang is used

Subject: [Boost-bugs] [Boost C++ Libraries] #12977: BOOST_NO_CXX11_HDR_MUTEX always defined when Clang is used
From: Boost C++ Libraries (noreply_at_[hidden])
Date: 2017-04-17 14:36:37

#12977: BOOST_NO_CXX11_HDR_MUTEX always defined when Clang is used
------------------------------+-------------------------
 Reporter:  anonymous         |      Owner:  johnmaddock
     Type:  Bugs              |     Status:  new
Milestone:  To Be Determined  |  Component:  config
  Version:  Boost 1.63.0      |   Severity:  Problem
 Keywords:                    |
------------------------------+-------------------------
 Boost 1.63 boost/config/stdlib/libcpp.hpp has code


 {{{
 #if __cplusplus < 201103
 ...
 #  define BOOST_NO_CXX11_HDR_MUTEX
 ...
 }}}

 So the macro is always defined despite of libc++ has std::mutex!
 Boost.Context - C++11 library never uses std::mutex as a consequence.

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Ticket URL: <https://svn.boost.org/trac/boost/ticket/12977>
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