https://gcc.gnu.org/bugzilla/show_bug.cgi?id=65076
--- Comment #62 from Markus Trippelsdorf <trippels at gcc dot gnu.org> --- Well, to be fair one should compare -std=c++14 for all versions, else you just measure the well known C++11 libstdc++ allocator overhead. gcc-49 (-std=c++14): 23.242 sec gcc-5 (-std=c++14): 26.246 gcc-6 (-std=c++14): 27.306 clang-3.9 (-std=c++14): 41.636 gcc-49 (-std=c++98): 22.574 gcc-5 (-std=c++98): 25.465 gcc-6 (-std=c++98): 26.799 clang-3.9 (-std=c++98): 35.816