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<h4 class="subsubsection">15.4.1.6 <small>GDB</small> and C</h4>

<p>The <code>set print union</code> and <code>show print union</code> commands apply to
the <code>union</code> type.  When set to &lsquo;<samp>on</samp>&rsquo;, any <code>union</code> that is
inside a <code>struct</code> or <code>class</code> is also printed.  Otherwise, it
appears as &lsquo;<samp>{...}</samp>&rsquo;.
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<p>The <code>@</code> operator aids in the debugging of dynamic arrays, formed
with pointers and a memory allocation function.  See <a href="Expressions.html#Expressions">Expressions</a>.
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