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version 1.75, 2019/04/30 13:22:09 version 1.76, 2019/05/26 06:55:32
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         return address on the stack.  Implemented for AMD64 and ARM64          return address on the stack.  Implemented for AMD64 and ARM64
         by Todd Mortimer in OpenBSD 6.4.          by Todd Mortimer in OpenBSD 6.4.
     </li>      </li>
       <li>
           <b>MAP_CONCEAL</b> addition to
           <a href="https://man.openbsd.org/mmap.2">mmap(2)</a>
           disallows memory pages to be written to core dumps, preventing
           accidental exposure of private information.
           Theo de Raadt, Mark Kettenis and Scott Soule Cheloha,
           February 2, 2019.
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 </ul>  </ul>
   
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     <li>      <li>
         <a href="https://man.openbsd.org/unveil.2">unveil(2)</a>:          <a href="https://man.openbsd.org/unveil.2">unveil(2)</a>:
         Theo de Raadt and Bob Beck, July 13, 2018, OpenBSD 6.4          Theo de Raadt and Bob Beck, July 13, 2018, OpenBSD 6.4
       </li>
       <li>
           <a href="https://man.openbsd.org/malloc_conceal.3">malloc_conceal(3)</a>
           and
           <a href="https://man.openbsd.org/calloc_conceal.3">calloc_conceal(3)</a>:
           Otto Moerbeek, May 10, 2019, OpenBSD 6.5
     </li>      </li>
 </ul>  </ul>
   
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