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<title>Debugging with GDB: Shared Library GDB/MI Catchpoint Commands</title>

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Next: <a href="Ada-Exception-GDB_002fMI-Catchpoint-Commands.html#Ada-Exception-GDB_002fMI-Catchpoint-Commands" accesskey="n" rel="next">Ada Exception GDB/MI Catchpoint Commands</a>, Up: <a href="GDB_002fMI-Catchpoint-Commands.html#GDB_002fMI-Catchpoint-Commands" accesskey="u" rel="up">GDB/MI Catchpoint Commands</a> &nbsp; [<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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<a name="Shared-Library-GDB_002fMI-Catchpoints"></a>
<h4 class="subsection">27.9.1 Shared Library <small>GDB/MI</small> Catchpoints</h4>

<a name="The-_002dcatch_002dload-Command"></a>
<h4 class="subheading">The <code>-catch-load</code> Command</h4>
<a name="index-_002dcatch_002dload"></a>

<a name="Synopsis-13"></a>
<h4 class="subsubheading">Synopsis</h4>

<div class="smallexample">
<pre class="smallexample"> -catch-load [ -t ] [ -d ] <var>regexp</var>
</pre></div>

<p>Add a catchpoint for library load events.  If the &lsquo;<samp>-t</samp>&rsquo; option is used,
the catchpoint is a temporary one (see <a href="Set-Breaks.html#Set-Breaks">Setting
Breakpoints</a>).  If the &lsquo;<samp>-d</samp>&rsquo; option is used, the catchpoint is created
in a disabled state.  The &lsquo;<samp>regexp</samp>&rsquo; argument is a regular
expression used to match the name of the loaded library.
</p>

<a name="GDB-Command-12"></a>
<h4 class="subsubheading"><small>GDB</small> Command</h4>

<p>The corresponding <small>GDB</small> command is &lsquo;<samp>catch load</samp>&rsquo;.
</p>
<a name="Example-12"></a>
<h4 class="subsubheading">Example</h4>

<div class="smallexample">
<pre class="smallexample">-catch-load -t foo.so
^done,bkpt={number=&quot;1&quot;,type=&quot;catchpoint&quot;,disp=&quot;del&quot;,enabled=&quot;y&quot;,
what=&quot;load of library matching foo.so&quot;,catch-type=&quot;load&quot;,times=&quot;0&quot;}
(gdb)
</pre></div>


<a name="The-_002dcatch_002dunload-Command"></a>
<h4 class="subheading">The <code>-catch-unload</code> Command</h4>
<a name="index-_002dcatch_002dunload"></a>

<a name="Synopsis-14"></a>
<h4 class="subsubheading">Synopsis</h4>

<div class="smallexample">
<pre class="smallexample"> -catch-unload [ -t ] [ -d ] <var>regexp</var>
</pre></div>

<p>Add a catchpoint for library unload events.  If the &lsquo;<samp>-t</samp>&rsquo; option is
used, the catchpoint is a temporary one (see <a href="Set-Breaks.html#Set-Breaks">Setting
Breakpoints</a>).  If the &lsquo;<samp>-d</samp>&rsquo; option is used, the catchpoint is
created in a disabled state.  The &lsquo;<samp>regexp</samp>&rsquo; argument is a regular
expression used to match the name of the unloaded library.
</p>
<a name="GDB-Command-13"></a>
<h4 class="subsubheading"><small>GDB</small> Command</h4>

<p>The corresponding <small>GDB</small> command is &lsquo;<samp>catch unload</samp>&rsquo;.
</p>
<a name="Example-13"></a>
<h4 class="subsubheading">Example</h4>

<div class="smallexample">
<pre class="smallexample">-catch-unload -d bar.so
^done,bkpt={number=&quot;2&quot;,type=&quot;catchpoint&quot;,disp=&quot;keep&quot;,enabled=&quot;n&quot;,
what=&quot;load of library matching bar.so&quot;,catch-type=&quot;unload&quot;,times=&quot;0&quot;}
(gdb)
</pre></div>


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