If Boost implementation of thread local storage is used, the order of
destructors is reversed, compared to C++11 `static thread_local`. The
solution for CORE `MemoryPool<T>` is to make the static variable a
static member of the class, and initialize the pointer only inside the
function. That ensures that the destructor will be called after the
destructor of local static variables.
Laurent Rineau
6c77740485