an> <span class="special">&amp;</span> alloc1<span class="special">,</span> <span class="identifier">self_t</span> <span class="special">&amp;</span> alloc2<span class="special">)</span><span class="special">;</span></pre>
<p>Swaps allocators. Does not throw. If each allocator is placed in a different memory segment, the result is undefined. </p>
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