<!--
  Copyright (C) Igor Sysoev
  Copyright (C) Nginx, Inc.
  -->

<!DOCTYPE article SYSTEM "../../../dtd/article.dtd">

<article name="A message &ldquo;&nbsp;&lsquo;sys_errlist&rsquo;
                is deprecated;
                use &lsquo;strerror&rsquo; or &lsquo;strerror_r&rsquo;
                instead&nbsp;&rdquo;"
         link="/en/docs/sys_errlist.html"
         lang="en"
         rev="1">


<section>

<para>
<initial>Q:</initial>
While building nginx version 0.7.66, 0.8.35 or higher on Linux
the following warning messages are issued:

<programlisting>
warning: `sys_errlist' is deprecated;
    use `strerror' or `strerror_r' instead
warning: `sys_nerr' is deprecated;
    use `strerror' or `strerror_r' instead
</programlisting>

</para>

<para>
<initial>A:</initial>
This is normal: nginx has to use the deprecated sys_errlist[] and sys_nerr
in signal handlers because strerror() and strerror_r() functions
are not Async-Signal-Safe.
</para>

</section>

</article>