https://svn.boost.org/trac10/ticket/5247 <p> The Spirit.Classic mmap_file_iterator, which is still applicable with Spirit.Qi v2, copies the std::string constructor argument unnecessarily. The ctor parameter be std::string const &amp;. </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/5247 Trac 1.4.3 Rob Stewart <robert.stewart@…> Tue, 01 Mar 2011 14:15:30 GMT https://svn.boost.org/trac10/ticket/5247#comment:1 https://svn.boost.org/trac10/ticket/5247#comment:1 <ul> <li><strong>severity</strong> <span class="trac-field-old">Problem</span> → <span class="trac-field-new">Optimization</span> </li> </ul> Ticket Hartmut Kaiser Fri, 04 Mar 2011 13:03:34 GMT https://svn.boost.org/trac10/ticket/5247#comment:2 https://svn.boost.org/trac10/ticket/5247#comment:2 <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> (In <a class="changeset" href="https://svn.boost.org/trac10/changeset/69546" title="Fixed #5247: mmap_file_iterator Copies String Argument">[69546]</a>) Fixed <a class="closed ticket" href="https://svn.boost.org/trac10/ticket/5247" title="#5247: Bugs: mmap_file_iterator Copies String Argument (closed: fixed)">#5247</a>: mmap_file_iterator Copies String Argument </p> Ticket