I got the same crash using the following full code (using boost trunk r86347): #include <boost/thread/synchronized_value.hpp> boost::synchronized_value<int> foo; Which produce the following error (ignore the file name, it contains exactly the code above): 1> clock.cpp 1>e:\projects\sdk\boost\boost\include\boost-1_55\boost\thread\synchronized_value.hpp(401): fatal error C1001: An internal error has occurred in the compiler. 1> (compiler file 'f:\dd\vctools\compiler\cxxfe\sl\p1\c\types.c', line 12852) 1> To work around this problem, try simplifying or changing the program near the locations listed above. 1> Please choose the Technical Support command on the Visual C++ 1> Help menu, or open the Technical Support help file for more information 1> e:\projects\games\netrush\netrush_projects\projects\netrush\system\core\clock.hpp(120) : see reference to class template instantiation 'boost::synchronized_value<int,boost::mutex>' being compiled Build has been canceled. I'm starting to think both vs2013 and synchronized_value code might be causing this errror. I'll report in both bug trackers.