ss="code hl_class" href="classipc_1_1shm_1_1stl_1_1Stateless__allocator.html">Stateless_allocator&lt;T, Shm_classic_arena&gt;</a>;</div>
<div class="line"><span class="keyword">using </span>Shm_classic_arena_activator = <a class="code hl_class" href="classipc_1_1shm_1_1stl_1_1Arena__activator.html">Arena_activator&lt;Shm_classic_arena&gt;</a>;</div>
<div class="line"> </div>
<div class="line"><span class="keyword">struct </span>Widget { m_float m_a; m_int m_b; }</div>
<div class="line"><span class="keyword"