[MacPorts] #37443: problem using boost_thread with -stdlib=libc++

[MacPorts]

#37443: problem using boost_thread with -stdlib=libc++
---------------------+--------------------------------
 Reporter:  itsme@…  |      Owner:  macports-tickets@…
     Type:  defect   |     Status:  new
 Priority:  Normal   |  Milestone:
Component:  ports    |    Version:  2.1.2
 Keywords:           |       Port:  boost, clang++
---------------------+--------------------------------
 Given this very short test program:
 {{{
 #include <boost/thread.hpp>
 int main(int,char**)
 {
     boost::thread t([]() { /* nothing */ });
     t.join();
 }
 }}}

 I compile this using the clang++ compiler ( either apple clang++ or
 macports clang++-mp-3.1 ) like this:
 {{{
 clang++ -stdlib=libc++ clangthread.cpp  -I /opt/local/include/
 /opt/local/lib/libboost_thread-mt.dylib /opt/local/lib/libboost_system-
 mt.dylib  -std=c++11 -DBOOST_NO_CXX11_NUMERIC_LIMITS -o
 test_libc++-crashes

 clang++ clangthread.cpp  -I /opt/local/include/ /opt/local/lib
 /libboost_thread-mt.dylib /opt/local/lib/libboost_system-mt.dylib
 -std=c++11 -o test_libstdc++-nocrash
 }}}

 Now running the version using libc++, i get: {{{Segmentation fault: 11}}}
 while the version with libstdc++ runs just fine.

 When i don't call {{{join}}}  both versions terminate without errors.

-- 
Ticket URL: <https://trac.macports.org/ticket/37443>
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