us-code/">an improved <code>&lt;system_error2&gt;</code></a> which fixed all the problems
listed at <a href="https://wg21.link/P0824">P0824 (Summary of SG14 discussion on <code>&lt;system_error&gt;</code>)</a>
and fixed up Outcome so one could use it without any system error implementation,
or with the STL one or with the proposed improved one. This improved <code>&lt;system_error2&gt;</code>
was then proposed as <a href="http://wg21.link/P1028">the standard library support for Zero overhead exceptions as p