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<a name="abort_002d_002d_002dabnormal-termination-of-a-program"></a>
<h3 class="section">2.3 <code>abort</code>&mdash;abnormal termination of a program</h3>
<a name="index-abort"></a>
<p><strong>Synopsis</strong>
</p><div class="example">
<pre class="example">#include &lt;stdlib.h&gt;
void abort(void);

</pre></div>
<p><strong>Description</strong><br>
Use <code>abort</code> to signal that your program has detected a condition it
cannot deal with.  Normally, <code>abort</code> ends your program&rsquo;s execution.
</p>
<p>Before terminating your program, <code>abort</code> raises the exception <code>SIGABRT</code>
(using &lsquo;<code>raise(SIGABRT)</code>&rsquo;).  If you have used <code>signal</code> to register
an exception handler for this condition, that handler has the
opportunity to retain control, thereby avoiding program termination.
</p>
<p>In this implementation, <code>abort</code> does not perform any stream- or
file-related cleanup (the host environment may do so; if not, you can
arrange for your program to do its own cleanup with a <code>SIGABRT</code>
exception handler).
</p>
<br>
<p><strong>Returns</strong><br>
<code>abort</code> does not return to its caller.
</p>
<br>
<p><strong>Portability</strong><br>
ANSI C requires <code>abort</code>.
</p>
<p>Supporting OS subroutines required: <code>_exit</code> and optionally, <code>write</code>.
</p>
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