Boost C++ Libraries: Ticket #5476: qi::list::parse incorrectly assumes value_type is default constructible https://svn.boost.org/trac10/ticket/5476 <p> In my case I'm using a boost::shared_ptr&lt;&gt; containing maintaining a pointer to an abstract base class, this causes the following expression to naturally fail: </p> <blockquote> <p> <em> create a local value if Attribute is not unused_type typedef typename traits::container_value&lt;Attribute&gt;::type </em></p> <blockquote> <p> value_type; </p> </blockquote> <p> value_type val = value_type(); </p> </blockquote> en-us Boost C++ Libraries /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/5476 Trac 1.4.3 anonymous Fri, 15 Apr 2011 11:26:26 GMT component changed; owner set https://svn.boost.org/trac10/ticket/5476#comment:1 https://svn.boost.org/trac10/ticket/5476#comment:1 <ul> <li><strong>owner</strong> set to <span class="trac-author">Joel de Guzman</span> </li> <li><strong>component</strong> <span class="trac-field-old">None</span> → <span class="trac-field-new">spirit</span> </li> </ul> Ticket Joel de Guzman Fri, 15 Apr 2011 11:42:08 GMT <link>https://svn.boost.org/trac10/ticket/5476#comment:2 </link> <guid isPermaLink="false">https://svn.boost.org/trac10/ticket/5476#comment:2</guid> <description> <p> You have to provide a minimal test case that exhibits your problem as per Spirit support policy: <a class="ext-link" href="http://boost-spirit.com/home/feedback-and-support/"><span class="icon">​</span>http://boost-spirit.com/home/feedback-and-support/</a> </p> </description> <category>Ticket</category> </item> <item> <dc:creator>Hartmut Kaiser</dc:creator> <pubDate>Sat, 16 Apr 2011 18:47:51 GMT</pubDate> <title/> <link>https://svn.boost.org/trac10/ticket/5476#comment:3 </link> <guid isPermaLink="false">https://svn.boost.org/trac10/ticket/5476#comment:3</guid> <description> <p> Please attach a small code example demonstrating the problem. </p> </description> <category>Ticket</category> </item> <item> <dc:creator>Bryce Adelstein Lelbach</dc:creator> <pubDate>Sun, 22 May 2011 07:46:01 GMT</pubDate> <title>status changed; resolution set https://svn.boost.org/trac10/ticket/5476#comment:4 https://svn.boost.org/trac10/ticket/5476#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">invalid</span> </li> </ul> <p> Marking as invalid as it's been 5 weeks and the report was anonymous, so we have no way to contact the reporter for more details. </p> Ticket