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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> [<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="Shared-Library-GDB_002fMI-Catchpoints"></a>
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<h4 class="subsection">27.9.1 Shared Library <small>GDB/MI</small> Catchpoints</h4>
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<a name="The-_002dcatch_002dload-Command"></a>
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<h4 class="subheading">The <code>-catch-load</code> Command</h4>
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<a name="index-_002dcatch_002dload"></a>
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<a name="Synopsis-13"></a>
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -catch-load [ -t ] [ -d ] <var>regexp</var>
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</pre></div>
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<p>Add a catchpoint for library load events. If the ‘<samp>-t</samp>’ option is used,
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the catchpoint is a temporary one (see <a href="Set-Breaks.html#Set-Breaks">Setting
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Breakpoints</a>). If the ‘<samp>-d</samp>’ option is used, the catchpoint is created
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in a disabled state. The ‘<samp>regexp</samp>’ argument is a regular
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expression used to match the name of the loaded library.
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</p>
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<a name="GDB-Command-12"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
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<p>The corresponding <small>GDB</small> command is ‘<samp>catch load</samp>’.
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</p>
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<a name="Example-12"></a>
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<h4 class="subsubheading">Example</h4>
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<div class="smallexample">
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<pre class="smallexample">-catch-load -t foo.so
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^done,bkpt={number="1",type="catchpoint",disp="del",enabled="y",
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what="load of library matching foo.so",catch-type="load",times="0"}
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(gdb)
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</pre></div>
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<a name="The-_002dcatch_002dunload-Command"></a>
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<h4 class="subheading">The <code>-catch-unload</code> Command</h4>
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<a name="index-_002dcatch_002dunload"></a>
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<a name="Synopsis-14"></a>
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<h4 class="subsubheading">Synopsis</h4>
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<div class="smallexample">
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<pre class="smallexample"> -catch-unload [ -t ] [ -d ] <var>regexp</var>
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</pre></div>
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<p>Add a catchpoint for library unload events. If the ‘<samp>-t</samp>’ option is
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used, the catchpoint is a temporary one (see <a href="Set-Breaks.html#Set-Breaks">Setting
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Breakpoints</a>). If the ‘<samp>-d</samp>’ option is used, the catchpoint is
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created in a disabled state. The ‘<samp>regexp</samp>’ argument is a regular
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expression used to match the name of the unloaded library.
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</p>
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<a name="GDB-Command-13"></a>
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<h4 class="subsubheading"><small>GDB</small> Command</h4>
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<p>The corresponding <small>GDB</small> command is ‘<samp>catch unload</samp>’.
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</p>
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<a name="Example-13"></a>
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<h4 class="subsubheading">Example</h4>
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<div class="smallexample">
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<pre class="smallexample">-catch-unload -d bar.so
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^done,bkpt={number="2",type="catchpoint",disp="keep",enabled="n",
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what="load of library matching bar.so",catch-type="unload",times="0"}
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(gdb)
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</pre></div>
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