id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 12977,BOOST_NO_CXX11_HDR_MUTEX always defined when Clang is used,anonymous,John Maddock,"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.",Bugs,closed,To Be Determined,config,Boost 1.63.0,Problem,invalid,,