id,summary,reporter,owner,description,type,status,milestone,component,version,severity,resolution,keywords,cc 2358,__sync_lock_test_and_set not defined for Intel ICC (used in detail/spinlock_sync.hpp),bangerth@…,Peter Dimov,"This is an issue that has apparently been noted before, see e.g. http://thread.gmane.org/gmane.comp.lib.boost.devel/176050 What's going on is that the Intel ICC compiler on x86_64 does not know about the __sync_lock_test_and_set intrinsic that GCC defines. It may be that the reason why Peter Dimov couldn't reproduce the problem lies in the ability of ICC to use GCC header files -- I don't know. Anyway, I can for a fact confirm that the patch (see attached) by Peter works. Best Wolfgang",Bugs,closed,Boost 1.37.0,smart_ptr,Boost 1.36.0,Problem,fixed,,