Boost C++ Application Development Cookbook - Second Edition

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The fourth solution is the most conservative, because prior to Boost 1.53 the functionality of the second solution was not implemented in shared_ptr. The first and second solutions are the fastest ones as they use only one memory allocation call. The third solution can be used with older versions of Boost and with C++11 standard library's std::shared_ptr<> (just don't forget to change boost::checked_array_deleter<T>() to std::default_delete<T[]>()).

Actually, boost::make_shared<char[]>(size) is not the same as new char[size], because it involves value-initialization of all elements. The equivalent function for default-initialization is boost::make_shared_noinit.

Beware! C++11 and C++14 versions of std::shared_ptr cannot work ...