Is make_shared really more efficient than new?
As infrastructure I was using llvm/clang 3.0 along with the llvm std c++ library within XCode4. Well that appears to be your problem. The C++11 standard states the following requirements for make_shared<T> (and allocate_shared<T>), in section 20.7.2.2.6: Requires: The expression ::new (pv) T(std::forward(args)…), where pv has type void* and points to storage suitable to hold …