Perhaps this should go to a g++ group but I have a feeling the answer is Out There: <div><br></div><div>Why is g++ having trouble with this? </div><div><br></div><div>Error is ../main.cpp:19: error: template declaration of ‘boost::adjacency_list&lt;boost::vecS, boost::vecS, boost::bidirectionalS, POS&lt;T&gt;, boost::no_property, boost::no_property, boost::listS&gt; DG’</div>
<div><br></div><div><div>template&lt;typename T = int&gt;</div><div>struct POS</div><div>{</div><div><span class="Apple-tab-span" style="white-space:pre">	</span>T x, y;</div><div>};</div><div><br></div><div>template&lt;typename T&gt;</div>
<div>adjacency_list&lt;vecS, vecS, bidirectionalS, POS&lt;T&gt; &gt; DG;</div></div><div><br></div>