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<h4 class="subsection">22.8.2 Automatically loading thread debugging library</h4>
<p><a name="index-auto_002dloading-libthread_005fdb_002eso_002e1-1719"></a>
This feature is currently present only on <span class="sc">gnu</span>/Linux native hosts.
<p><span class="sc">gdb</span> reads in some cases thread debugging library from places specific
to the inferior (see <a href="set-libthread_002ddb_002dsearch_002dpath.html#set-libthread_002ddb_002dsearch_002dpath">set libthread-db-search-path</a>).
<p>The special &lsquo;<samp><span class="samp">libthread-db-search-path</span></samp>&rsquo; entry &lsquo;<samp><span class="samp">$sdir</span></samp>&rsquo; is processed
without checking this &lsquo;<samp><span class="samp">set auto-load libthread-db</span></samp>&rsquo; switch as system
libraries have to be trusted in general. In all other cases of
&lsquo;<samp><span class="samp">libthread-db-search-path</span></samp>&rsquo; entries <span class="sc">gdb</span> checks first if &lsquo;<samp><span class="samp">set
auto-load libthread-db</span></samp>&rsquo; is enabled before trying to open such thread debugging
library.
<p>Note that loading of this debugging library also requires accordingly configured
<code>auto-load safe-path</code> (see <a href="Auto_002dloading-safe-path.html#Auto_002dloading-safe-path">Auto-loading safe path</a>).
<dl>
<a name="set-auto_002dload-libthread_002ddb"></a><a name="index-set-auto_002dload-libthread_002ddb-1720"></a><dt><code>set auto-load libthread-db [on|off]</code><dd>Enable or disable the auto-loading of inferior specific thread debugging library.
<p><a name="show-auto_002dload-libthread_002ddb"></a><a name="index-show-auto_002dload-libthread_002ddb-1721"></a><br><dt><code>show auto-load libthread-db</code><dd>Show whether auto-loading of inferior specific thread debugging library is
enabled or disabled.
<p><a name="info-auto_002dload-libthread_002ddb"></a><a name="index-info-auto_002dload-libthread_002ddb-1722"></a><br><dt><code>info auto-load libthread-db</code><dd>Print the list of all loaded inferior specific thread debugging libraries and
for each such library print list of inferior <var>pid</var>s using it.
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