ss="special">::</span><span class="identifier">size_t</span>    <a name="boost.default_user_allocator_new_delete.size_type"></a><span class="identifier">size_type</span><span class="special">;</span>        <span class="comment">// An unsigned integral type that can represent the size of the largest object to be allocated. </span>
  <span class="keyword">typedef</span> <span class="identifier">std</span><span class="special">::</span><span class="identifier">ptrdiff_t</span> <a name="boost.default_user_allo