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<title>Debugging with GDB: Annotations for Running</title>
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<link href="index.html#SEC_Contents" rel="contents" title="Table of Contents">
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<a name="Annotations-for-Running"></a>
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<div class="header">
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<p>
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Next: <a href="Source-Annotations.html#Source-Annotations" accesskey="n" rel="next">Source Annotations</a>, Previous: <a href="Invalidation.html#Invalidation" accesskey="p" rel="prev">Invalidation</a>, Up: <a href="Annotations.html#Annotations" accesskey="u" rel="up">Annotations</a> [<a href="index.html#SEC_Contents" title="Table of contents" rel="contents">Contents</a>][<a href="Concept-Index.html#Concept-Index" title="Index" rel="index">Index</a>]</p>
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<hr>
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<a name="Running-the-Program"></a>
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<h3 class="section">28.6 Running the Program</h3>
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<a name="index-annotations-for-running-programs"></a>
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<a name="index-starting-annotation"></a>
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<a name="index-stopping-annotation"></a>
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<p>When the program starts executing due to a <small>GDB</small> command such as
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<code>step</code> or <code>continue</code>,
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</p>
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<div class="smallexample">
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<pre class="smallexample">^Z^Zstarting
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</pre></div>
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<p>is output. When the program stops,
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</p>
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<div class="smallexample">
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<pre class="smallexample">^Z^Zstopped
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</pre></div>
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<p>is output. Before the <code>stopped</code> annotation, a variety of
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annotations describe how the program stopped.
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</p>
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<dl compact="compact">
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<dd><a name="index-exited-annotation"></a>
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</dd>
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<dt><code>^Z^Zexited <var>exit-status</var></code></dt>
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<dd><p>The program exited, and <var>exit-status</var> is the exit status (zero for
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successful exit, otherwise nonzero).
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</p>
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<a name="index-signalled-annotation"></a>
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<a name="index-signal_002dname-annotation"></a>
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<a name="index-signal_002dname_002dend-annotation"></a>
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<a name="index-signal_002dstring-annotation"></a>
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<a name="index-signal_002dstring_002dend-annotation"></a>
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</dd>
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<dt><code>^Z^Zsignalled</code></dt>
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<dd><p>The program exited with a signal. After the <code>^Z^Zsignalled</code>, the
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annotation continues:
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</p>
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<div class="smallexample">
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<pre class="smallexample"><var>intro-text</var>
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^Z^Zsignal-name
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<var>name</var>
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^Z^Zsignal-name-end
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<var>middle-text</var>
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^Z^Zsignal-string
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<var>string</var>
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^Z^Zsignal-string-end
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<var>end-text</var>
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</pre></div>
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<p>where <var>name</var> is the name of the signal, such as <code>SIGILL</code> or
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<code>SIGSEGV</code>, and <var>string</var> is the explanation of the signal, such
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as <code>Illegal Instruction</code> or <code>Segmentation fault</code>. The arguments
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<var>intro-text</var>, <var>middle-text</var>, and <var>end-text</var> are for the
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user’s benefit and have no particular format.
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</p>
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<a name="index-signal-annotation"></a>
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</dd>
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<dt><code>^Z^Zsignal</code></dt>
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<dd><p>The syntax of this annotation is just like <code>signalled</code>, but <small>GDB</small> is
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just saying that the program received the signal, not that it was
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terminated with it.
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</p>
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<a name="index-breakpoint-annotation"></a>
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</dd>
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<dt><code>^Z^Zbreakpoint <var>number</var></code></dt>
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<dd><p>The program hit breakpoint number <var>number</var>.
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</p>
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<a name="index-watchpoint-annotation"></a>
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</dd>
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<dt><code>^Z^Zwatchpoint <var>number</var></code></dt>
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<dd><p>The program hit watchpoint number <var>number</var>.
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</p></dd>
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</dl>
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