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<h3 class="unnumberedsec">Memory leak - 16386 bytes allocated by malloc.</h3>
<a name="faq_002dmemory_002dleak"></a>
<p>UPDATED 2002-07-10: As of <code>flex</code> version 2.5.9, this leak means that you did not
call <code>yylex_destroy()</code>. If you are using an earlier version of <code>flex</code>, then read
on.
</p>
<p>The leak is about 16426 bytes.  That is, (8192 * 2 + 2) for the read-buffer, and
about 40 for <code>struct yy_buffer_state</code> (depending upon alignment). The leak is in
the non-reentrant C scanner only (NOT in the reentrant scanner, NOT in the C++
scanner). Since <code>flex</code> doesn&rsquo;t know when you are done, the buffer is never freed.
</p>
<p>However, the leak won&rsquo;t multiply since the buffer is reused no matter how many
times you call <code>yylex()</code>.
</p>
<p>If you want to reclaim the memory when you are completely done scanning, then
you might try this:
</p>
<div class="example">
<pre class="verbatim">/* For non-reentrant C scanner only. */
yy_delete_buffer(YY_CURRENT_BUFFER);
yy_init = 1;
</pre></div>

<p>Note: <code>yy_init</code> is an &quot;internal variable&quot;, and hasn&rsquo;t been tested in this
situation. It is possible that some other globals may need resetting as well.
</p>



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flex-doc 2.6.4-6 / usr / share / doc / flex-doc / html / Memory-leak-_002d-16386-bytes-allocated-by-malloc_002e.html
