https://svn.boost.org/trac10/ticket/10165 <p> I encountered a regression using the boost graph library, but I am not exactly sure what caused the regression since the file concerned has not changed for a couple of months. </p> <p> Here is a little code snippet showing the bug. I am using Visual Studio 2013, 64 bits. The bug occurs both in debug and release mode : </p> <p> #include &lt;boost/graph/adjacency_list.hpp&gt; #include &lt;boost/graph/graph_traits.hpp&gt; #include &lt;iostream&gt; </p> <p> void main() { </p> <blockquote> <p> typedef boost::adjacency_list&lt;boost::vecS, boost::vecS, boost::directedS, int, int&gt; Graph; Graph g(2); auto result = add_edge(0, 1, g); boost::graph_traits&lt;Graph&gt;::edge_iterator ei, ei_end; boost::tie(ei, ei_end) = boost::edges(g); std::cout &lt;&lt; "edge target is: " &lt;&lt; (*ei).m_target &lt;&lt; std::endl; </p> </blockquote> <p> } </p> <p> The result is an uninitialized value of the target vertex: 14829735431805717965. </p> <p> After investigation of the issue, it seems that the problem lies in adjacency_list.hpp, pushing the newly created edge into the container, it makes a copy from a rvalue reference. This copy does move the property unique_ptr but does not copy the target value of the edge. </p> <p> I used the qttqched patch to fix this, it simply consists in copying the m_target propoerty of the edge along the m_property. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/10165 Trac 1.4.3 ernest.galbrun@… Tue, 01 Jul 2014 14:32:17 GMT https://svn.boost.org/trac10/ticket/10165 https://svn.boost.org/trac10/ticket/10165 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">0001-changed-the-copy-from-rvalue-reference-to-copy-m_taa.patch</span> </li> </ul> <p> p </p> Ticket ernest.galbrun@… Tue, 01 Jul 2014 14:32:21 GMT https://svn.boost.org/trac10/ticket/10165 https://svn.boost.org/trac10/ticket/10165 <ul> <li><strong>attachment</strong> → <span class="trac-field-new">0001-changed-the-copy-from-rvalue-reference-to-copy-m_taa.2.patch</span> </li> </ul> <p> patch proposing fix </p> Ticket Eric Niebler Wed, 30 Jul 2014 21:22:31 GMT https://svn.boost.org/trac10/ticket/10165#comment:4 https://svn.boost.org/trac10/ticket/10165#comment:4 <ul> <li><strong>status</strong> <span class="trac-field-old">new</span> → <span class="trac-field-new">closed</span> </li> <li><strong>resolution</strong> → <span class="trac-field-new">fixed</span> </li> </ul> <p> Fixed for 1.56. </p> Ticket