 src="../../../../../doc/src/images/important.png"></td>
<th align="left">Important</th>
</tr>
<tr><td align="left" valign="top"><p>
        Windows using fcontext_t: turn off global program optimization (/GL) and
        change /EHsc (compiler assumes that functions declared as extern "C"
        never throw a C++ exception) to /EHs (tells compiler assumes that functions
        declared as extern "C" may throw an exception).
      </p></td></tr>
</table></div>
<p>
      Because this library uses C++11 ext