<p></p>
<p><b>@ldv-alt</b> commented on this pull request.</p>

<hr>

<p>In <a href="https://github.com/strace/strace/pull/149#discussion_r474765075">tests/strace-n.c</a>:</p>
<pre style='color:#555'>> +            const long args[] = { 0, 0 };
+               syscall(__NR_socketcall, SC_listen, args);
+               printf("[%4u] listen(0, 0) = -1 ENOTSOCK (%m)\n", SYS_socket_subcall + SC_listen);
</pre>
<p>Yes, the light couldn't have been any greener.</p>

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