https://svn.boost.org/trac10/ticket/13396 <p> Some compilers (GCC 4.4, 4.5, MSVC 12) have added support for defaulted functions and rvalue references, but move constructor and move assignment are not treated as special member functions yet so they cannot be defaulted. </p> <p> The corresponding pull request: <a class="ext-link" href="https://github.com/boostorg/config/pull/205"><span class="icon">​</span>https://github.com/boostorg/config/pull/205</a> </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/13396 Trac 1.4.3 John Maddock Tue, 31 Jul 2018 18:54:28 GMT https://svn.boost.org/trac10/ticket/13396#comment:1 https://svn.boost.org/trac10/ticket/13396#comment:1 <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">duplicate</span> </li> </ul> <p> Closing as duplicate of PR. </p> Ticket