https://svn.boost.org/trac10/ticket/12124 <p> Hello, </p> <p> The ARMCC compiler raises the error </p> <p> boost/type_traits/is_const.hpp(38): error: <a class="deleted ticket" href="https://svn.boost.org/trac10/ticket/20" title="#20: Support Requests: passwords in c++ programming (deleted)">#20</a>: identifier "size_t" is undefined </p> <p> It works, if I change size_t to std::size_t. I have no clue, how the typedef is exactly imported. IMHO, it would be cleaner to also include &lt;cstddef&gt; from is_const.hpp. </p> <p> Best regards, Manuel </p> en-us /htdocs/site/boost.png https://svn.boost.org/trac10/ticket/12124 Trac 1.4.3 manuel.freiberger@… Wed, 13 Apr 2016 08:23:47 GMT https://svn.boost.org/trac10/ticket/12124#comment:2 https://svn.boost.org/trac10/ticket/12124#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> Fixed in <a class="ext-link" href="https://github.com/boostorg/type_traits/commit/97cea143b944a9d180acaae41f89ab3671531485"><span class="icon">​</span>https://github.com/boostorg/type_traits/commit/97cea143b944a9d180acaae41f89ab3671531485</a> </p> Ticket