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Next: <a href="Pretty_002dPrinter-Commands.html#Pretty_002dPrinter-Commands" accesskey="n" rel="next">Pretty-Printer Commands</a>, Previous: <a href="Pretty_002dPrinter-Introduction.html#Pretty_002dPrinter-Introduction" accesskey="p" rel="previous">Pretty-Printer Introduction</a>, Up: <a href="Pretty-Printing.html#Pretty-Printing" accesskey="u" rel="up">Pretty Printing</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="Pretty_002dPrinter-Example-1"></a>
<h4 class="subsection">10.9.2 Pretty-Printer Example</h4>

<p>Here is how a C<tt>++</tt> <code>std::string</code> looks without a pretty-printer:
</p>
<div class="smallexample">
<pre class="smallexample">(gdb) print s
$1 = {
  static npos = 4294967295, 
  _M_dataplus = {
    &lt;std::allocator&lt;char&gt;&gt; = {
      &lt;__gnu_cxx::new_allocator&lt;char&gt;&gt; = {
        &lt;No data fields&gt;}, &lt;No data fields&gt;
      },
    members of std::basic_string&lt;char, std::char_traits&lt;char&gt;,
      std::allocator&lt;char&gt; &gt;::_Alloc_hider:
    _M_p = 0x804a014 &quot;abcd&quot;
  }
}
</pre></div>

<p>With a pretty-printer for <code>std::string</code> only the contents are printed:
</p>
<div class="smallexample">
<pre class="smallexample">(gdb) print s
$2 = &quot;abcd&quot;
</pre></div>


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