      union_ fails to create holes
        </li>
<li class="listitem">
          <a href="https://svn.boost.org/trac/boost/ticket/11789" target="_top">11789</a>
          Assertion failure or invalid result of set operations for spherical_equatorial
          coordinate system.
        </li>
<li class="listitem">
          <a href="https://svn.boost.org/trac/boost/ticket/11917" target="_top">11917</a>
          Andoyer distance strategy returns 0 for antipodal points (default geographic
          distance).