<p>In <a href="https://github.com/mlpack/mlpack/pull/700#discussion_r70044802">src/mlpack/methods/lsh/lsh_search_impl.hpp</a>:</p>
<pre style='color:#555'>&gt; @@ -733,7 +762,8 @@ void LSHSearch&lt;SortPolicy&gt;::ReturnIndicesFromTable(
&gt;  
&gt;      // Retrieve candidates.
&gt;      size_t start = 0;
&gt; -    for (size_t i = 0; i &lt; numTablesToSearch; ++i) // For all tables
&gt; +
&gt; +    for (long long int i = 0; i &lt; numTablesToSearch; ++i) // For all tables
</pre>
<p>That's pretty reasonable. I can go back to using <code>size_t</code> and ask to detect version 3 and up.</p>

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