orm of an allocator adaptor which can be set as the `Allocator` template param</span></div>
<div class="line"><a id="l00046" name="l00046"></a><span class="lineno">   46</span><span class="comment"> * of a `vector` (etc.), adapting the normal allocator used; whether that&#39;s the typical heap-allocating `std::allocator`</span></div>
<div class="line"><a id="l00047" name="l00047"></a><span class="lineno">   47</span><span class="comment"> * or something more exotic (e.g., SHM-allocating ipc::shm::stl::State