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<a name="abort"></a>
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Next: <a href="abs.html#abs" accesskey="n" rel="next">abs</a>, Previous: <a href="a64l.html#a64l" accesskey="p" rel="prev">a64l</a>, Up: <a href="Stdlib.html#Stdlib" accesskey="u" rel="up">Stdlib</a> [<a href="Document-Index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Document-Index.html#Document-Index" title="Index" rel="index">Index</a>]</p>
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<a name="abort_002d_002d_002dabnormal-termination-of-a-program"></a>
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<h3 class="section">2.3 <code>abort</code>—abnormal termination of a program</h3>
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<a name="index-abort"></a>
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<p><strong>Synopsis</strong>
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</p><div class="example">
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<pre class="example">#include <stdlib.h>
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void abort(void);
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</pre></div>
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<p><strong>Description</strong><br>
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Use <code>abort</code> to signal that your program has detected a condition it
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cannot deal with. Normally, <code>abort</code> ends your program’s execution.
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</p>
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<p>Before terminating your program, <code>abort</code> raises the exception <code>SIGABRT</code>
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(using ‘<code>raise(SIGABRT)</code>’). If you have used <code>signal</code> to register
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an exception handler for this condition, that handler has the
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opportunity to retain control, thereby avoiding program termination.
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</p>
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<p>In this implementation, <code>abort</code> does not perform any stream- or
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file-related cleanup (the host environment may do so; if not, you can
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arrange for your program to do its own cleanup with a <code>SIGABRT</code>
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exception handler).
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</p>
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<br>
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<p><strong>Returns</strong><br>
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<code>abort</code> does not return to its caller.
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</p>
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<br>
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<p><strong>Portability</strong><br>
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ANSI C requires <code>abort</code>.
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</p>
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<p>Supporting OS subroutines required: <code>_exit</code> and optionally, <code>write</code>.
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