lass templates, <code class="computeroutput"><span class="identifier">checked_deleter</span></code>
        and <code class="computeroutput"><span class="identifier">checked_array_deleter</span></code>.
      </p>
<p>
        The C++ Standard allows, in 5.3.5/5, pointers to incomplete class types to
        be deleted with a delete-expression. When the class has a non-trivial destructor,
        or a class-specific operator delete, the behavior is undefined. Some compilers
        issue a warning when an in